diff --git a/test/Makefile b/test/Makefile
index 0ee61a2..8209588 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -13,14 +13,10 @@
 	$(error TEST_DIR is not set)
 endif
 
-export TEST_BR = $(BR)/build-test
-export TEST_DOC_BR = $(TEST_BR)/doc
-export BUILD_TEST_SRC = $(TEST_BR)/src
+export TEST_BR = $(TEST_DIR)
+export TEST_DOC_BR = $(TEST_DIR)/doc/build
 FAILED_DIR=/tmp/vpp-failed-unittests/
-PLUGIN_TEST_DIRS=$(shell find $(PLUGIN_SRC_DIR) -type d -name test -exec echo -n " -d {}" \;)
-CORE_TEST_DIRS=$(shell find $(WS_ROOT)/src -not \( -path $(INTERN_PLUGIN_SRC_DIR) -prune \) -type d -name test -exec echo -n " -d {}" \;)
-VPP_TEST_DIRS=$(shell ls -d $(TEST_DIR)$(PLUGIN_TEST_DIRS)$(CORE_TEST_DIRS) $(EXTERN_TESTS))
-VPP_TEST_SRC=$(shell for dir in $(VPP_TEST_DIRS) ; do ls $$dir/*.py 2>/dev/null; done)
+VPP_TEST_DIRS=$(shell ls -d $(TEST_DIR) $(EXTERN_TESTS))
 
 FORCE_NO_WIPE=0
 ifeq ($(DEBUG),gdb)
@@ -70,7 +66,7 @@
 UNITTEST_EXTRA_OPTS=$(UNITTEST_FAILFAST_OPTS) -d $(EXTERN_TESTS)
 endif
 
-VENV_PATH=$(TEST_BR)/venv
+VENV_PATH=$(TEST_DIR)/venv
 
 ifeq ($(TEST_DEBUG),1)
 VENV_RUN_DIR:=$(VENV_PATH)/run-debug
@@ -84,11 +80,6 @@
 PYTHON_INTERP=$(PYTHON)
 endif
 
-empty:=
-space:= $(empty) $(empty)
-export PYTHONPATH=$(subst $(space),:,$(VPP_TEST_DIRS))
-export PYTHONPYCACHEPREFIX=$(TEST_BR)/pycache
-
 PYTHON_VERSION=$(shell $(PYTHON_INTERP) -c 'import sys; print(sys.version_info.major)')
 PIP_VERSION=20.1.1
 # Keep in sync with requirements.txt
@@ -158,7 +149,7 @@
 endif
 
 define retest-func
-@env VPP_IN_GDB=$(VPP_IN_GDB) FORCE_FOREGROUND=$(FORCE_FOREGROUND) FAILED_DIR=$(FAILED_DIR) VENV_PATH=$(VENV_PATH) scripts/setsid_wrapper.sh $(FORCE_FOREGROUND) $(VENV_PATH)/bin/activate $(PYTHON_INTERP) $(PYTHON_PROFILE_OPTS) $(BUILD_TEST_SRC)/run_tests.py -d $(BUILD_TEST_SRC) $(UNITTEST_EXTRA_OPTS) || env FAILED_DIR=$(FAILED_DIR) COMPRESS_FAILED_TEST_LOGS=$(COMPRESS_FAILED_TEST_LOGS) scripts/compress_failed.sh
+@env VPP_IN_GDB=$(VPP_IN_GDB) FORCE_FOREGROUND=$(FORCE_FOREGROUND) FAILED_DIR=$(FAILED_DIR) VENV_PATH=$(VENV_PATH) scripts/setsid_wrapper.sh $(FORCE_FOREGROUND) $(VENV_PATH)/bin/activate $(PYTHON_INTERP) $(PYTHON_PROFILE_OPTS) run_tests.py -d $(TEST_DIR) $(UNITTEST_EXTRA_OPTS) || env FAILED_DIR=$(FAILED_DIR) COMPRESS_FAILED_TEST_LOGS=$(COMPRESS_FAILED_TEST_LOGS) scripts/compress_failed.sh
 endef
 
 .PHONY: sanity
@@ -167,8 +158,8 @@
 SANITY_IMPORT_VPP_PAPI_CMD=true
 SANITY_RUN_VPP_CMD=true
 else
-SANITY_IMPORT_VPP_PAPI_CMD=source $(VENV_PATH)/bin/activate && $(PYTHON_INTERP) $(BUILD_TEST_SRC)/sanity_import_vpp_papi.py
-SANITY_RUN_VPP_CMD=source $(VENV_PATH)/bin/activate && $(PYTHON_INTERP) $(BUILD_TEST_SRC)/sanity_run_vpp.py
+SANITY_IMPORT_VPP_PAPI_CMD=source $(VENV_PATH)/bin/activate && $(PYTHON_INTERP) sanity_import_vpp_papi.py
+SANITY_RUN_VPP_CMD=source $(VENV_PATH)/bin/activate && $(PYTHON_INTERP) sanity_run_vpp.py
 endif
 
 ifndef TEST_JOBS
@@ -207,16 +198,11 @@
 ext-test-apps:
 	make -C ext test-apps
 
-$(BUILD_TEST_SRC): verify-env
-	@rm -rf $@
-	@mkdir -p $@
-	@for file in $(VPP_TEST_SRC); do if [ ! -L $$file ] && [ ! -e $(BUILD_TEST_SRC)/$$(basename $$file) ] ; then ln -s $$file $(BUILD_TEST_SRC) ; fi ; done
-
 $(FAILED_DIR): reset
 	@mkdir -p $@
 
 .PHONY: test-dep
-test-dep: $(BUILD_TEST_SRC) $(PAPI_INSTALL_DONE) $(FAILED_DIR)
+test-dep: $(PAPI_INSTALL_DONE) $(FAILED_DIR)
 
 .PHONY: test
 test: test-dep ext-test-apps sanity
@@ -229,8 +215,6 @@
 .PHONY: shell
 shell: test-dep
 	@echo "source $(VENV_PATH)/bin/activate;\
-		cd $(BUILD_TEST_SRC);\
-		export PYTHONPATH=$(PYTHONPATH);\
 		export RND_SEED=$(RND_SEED);\
 		echo '***';\
 		echo PYTHONPATH=$(PYTHONPATH);\
@@ -259,14 +243,13 @@
 	@make -C ext clean
 	@rm -rf $(VENV_PATH)
 	@rm -rf $(patsubst %,%/__pycache__, $(VPP_TEST_DIRS))
-	@rm -rf  $(BUILD_TEST_SRC)
 
 $(TEST_DOC_BR): $(PIP_INSTALL_DONE)
 	@mkdir -p $@
 	@bash -c "source $(VENV_PATH)/bin/activate && make -C doc html"
 
 .PHONY: doc
-doc: $(BUILD_TEST_SRC) $(PIP_PATCH_DONE) $(TEST_DOC_BR)
+doc: $(PIP_PATCH_DONE) $(TEST_DOC_BR)
 	@echo
 	@echo "Test Documentation URL: $(TEST_DOC_BR)/html/index.html"
 	@echo "Run 'make test-wipe-doc test-doc' to rebuild the test docs"
@@ -305,7 +288,7 @@
 	@rm -rf $(TEST_BR)
 
 .PHONY: checkstyle-diff
-checkstyle-diff: $(BUILD_TEST_SRC) $(PIP_INSTALL_DONE)
+checkstyle-diff: $(PIP_INSTALL_DONE)
 	@bash -c "source $(VENV_PATH)/bin/activate &&\
 		  $(PYTHON_INTERP) -m pip install pycodestyle"
 	@bash -c "source $(VENV_PATH)/bin/activate &&\
@@ -326,11 +309,11 @@
 	$(call retest-func)
 
 .PHONY: checkstyle
-checkstyle: $(BUILD_TEST_SRC) $(PIP_INSTALL_DONE)
+checkstyle: $(PIP_INSTALL_DONE)
 	@bash -c "source $(VENV_PATH)/bin/activate &&\
 		  $(PYTHON_INTERP) -m pip install pycodestyle"
 	@bash -c "source $(VENV_PATH)/bin/activate &&\
-		pycodestyle --show-source --ignore=W504,E126,E241,E226,E305,E704,E741,E722 -v $(BUILD_TEST_SRC)/*.py ||\
+		pycodestyle --show-source --ignore=W504,E126,E241,E226,E305,E704,E741,E722 -v *.py ||\
 		(echo \"*******************************************************************\" &&\
 		 echo \"* Test framework PEP8 compliance check FAILED (checked all files)\" &&\
 	         echo \"*******************************************************************\" &&\
diff --git a/test/bfd.py b/test/bfd.py
new file mode 100644
index 0000000..9d44425
--- /dev/null
+++ b/test/bfd.py
@@ -0,0 +1,423 @@
+""" BFD protocol implementation """
+
+from random import randint
+from socket import AF_INET, AF_INET6, inet_pton
+from scapy.all import bind_layers
+from scapy.layers.inet import UDP
+from scapy.packet import Packet
+from scapy.fields import BitField, BitEnumField, XByteField, FlagsField,\
+    ConditionalField, StrField
+from vpp_object import VppObject
+from util import NumericConstant
+from vpp_papi import VppEnum
+
+
+class BFDDiagCode(NumericConstant):
+    """ BFD Diagnostic Code """
+    no_diagnostic = 0
+    control_detection_time_expired = 1
+    echo_function_failed = 2
+    neighbor_signaled_session_down = 3
+    forwarding_plane_reset = 4
+    path_down = 5
+    concatenated_path_down = 6
+    administratively_down = 7
+    reverse_concatenated_path_down = 8
+
+    desc_dict = {
+        no_diagnostic: "No diagnostic",
+        control_detection_time_expired: "Control Detection Time Expired",
+        echo_function_failed: "Echo Function Failed",
+        neighbor_signaled_session_down: "Neighbor Signaled Session Down",
+        forwarding_plane_reset: "Forwarding Plane Reset",
+        path_down: "Path Down",
+        concatenated_path_down: "Concatenated Path Down",
+        administratively_down: "Administratively Down",
+        reverse_concatenated_path_down: "Reverse Concatenated Path Down",
+    }
+
+
+class BFDState(NumericConstant):
+    """ BFD State """
+    admin_down = 0
+    down = 1
+    init = 2
+    up = 3
+
+    desc_dict = {
+        admin_down: "AdminDown",
+        down: "Down",
+        init: "Init",
+        up: "Up",
+    }
+
+
+class BFDAuthType(NumericConstant):
+    """ BFD Authentication Type """
+    no_auth = 0
+    simple_pwd = 1
+    keyed_md5 = 2
+    meticulous_keyed_md5 = 3
+    keyed_sha1 = 4
+    meticulous_keyed_sha1 = 5
+
+    desc_dict = {
+        no_auth: "No authentication",
+        simple_pwd: "Simple Password",
+        keyed_md5: "Keyed MD5",
+        meticulous_keyed_md5: "Meticulous Keyed MD5",
+        keyed_sha1: "Keyed SHA1",
+        meticulous_keyed_sha1: "Meticulous Keyed SHA1",
+    }
+
+
+def bfd_is_auth_used(pkt):
+    """ is packet authenticated? """
+    return "A" in pkt.sprintf("%BFD.flags%")
+
+
+def bfd_is_simple_pwd_used(pkt):
+    """ is simple password authentication used? """
+    return bfd_is_auth_used(pkt) and pkt.auth_type == BFDAuthType.simple_pwd
+
+
+def bfd_is_sha1_used(pkt):
+    """ is sha1 authentication used? """
+    return bfd_is_auth_used(pkt) and pkt.auth_type in \
+        (BFDAuthType.keyed_sha1, BFDAuthType.meticulous_keyed_sha1)
+
+
+def bfd_is_md5_used(pkt):
+    """ is md5 authentication used? """
+    return bfd_is_auth_used(pkt) and pkt.auth_type in \
+        (BFDAuthType.keyed_md5, BFDAuthType.meticulous_keyed_md5)
+
+
+def bfd_is_md5_or_sha1_used(pkt):
+    """ is md5 or sha1 used? """
+    return bfd_is_md5_used(pkt) or bfd_is_sha1_used(pkt)
+
+
+class BFD(Packet):
+    """ BFD protocol layer for scapy """
+
+    udp_dport = 3784  #: BFD destination port per RFC 5881
+    udp_dport_echo = 3785  # : BFD destination port for ECHO per RFC 5881
+    udp_sport_min = 49152  #: BFD source port min value per RFC 5881
+    udp_sport_max = 65535  #: BFD source port max value per RFC 5881
+    bfd_pkt_len = 24  # : length of BFD pkt without authentication section
+    sha1_auth_len = 28  # : length of authentication section if SHA1 used
+
+    name = "BFD"
+
+    fields_desc = [
+        BitField("version", 1, 3),
+        BitEnumField("diag", 0, 5, BFDDiagCode.desc_dict),
+        BitEnumField("state", 0, 2, BFDState.desc_dict),
+        FlagsField("flags", 0, 6, ['M', 'D', 'A', 'C', 'F', 'P']),
+        XByteField("detect_mult", 0),
+        BitField("length", bfd_pkt_len, 8),
+        BitField("my_discriminator", 0, 32),
+        BitField("your_discriminator", 0, 32),
+        BitField("desired_min_tx_interval", 0, 32),
+        BitField("required_min_rx_interval", 0, 32),
+        BitField("required_min_echo_rx_interval", 0, 32),
+        ConditionalField(
+            BitEnumField("auth_type", 0, 8, BFDAuthType.desc_dict),
+            bfd_is_auth_used),
+        ConditionalField(BitField("auth_len", 0, 8), bfd_is_auth_used),
+        ConditionalField(BitField("auth_key_id", 0, 8), bfd_is_auth_used),
+        ConditionalField(BitField("auth_reserved", 0, 8),
+                         bfd_is_md5_or_sha1_used),
+        ConditionalField(
+            BitField("auth_seq_num", 0, 32), bfd_is_md5_or_sha1_used),
+        ConditionalField(StrField("auth_key_hash", "0" * 16), bfd_is_md5_used),
+        ConditionalField(
+            StrField("auth_key_hash", "0" * 20), bfd_is_sha1_used),
+    ]
+
+    def mysummary(self):
+        return self.sprintf("BFD(my_disc=%BFD.my_discriminator%,"
+                            "your_disc=%BFD.your_discriminator%)")
+
+
+# glue the BFD packet class to scapy parser
+bind_layers(UDP, BFD, dport=BFD.udp_dport)
+
+
+class BFD_vpp_echo(Packet):
+    """ BFD echo packet as used by VPP (non-rfc, as rfc doesn't define one) """
+
+    udp_dport = 3785  #: BFD echo destination port per RFC 5881
+    name = "BFD_VPP_ECHO"
+
+    fields_desc = [
+        BitField("discriminator", 0, 32),
+        BitField("expire_time_clocks", 0, 64),
+        BitField("checksum", 0, 64)
+    ]
+
+    def mysummary(self):
+        return self.sprintf(
+            "BFD_VPP_ECHO(disc=%BFD_VPP_ECHO.discriminator%,"
+            "expire_time_clocks=%BFD_VPP_ECHO.expire_time_clocks%)")
+
+
+# glue the BFD echo packet class to scapy parser
+bind_layers(UDP, BFD_vpp_echo, dport=BFD_vpp_echo.udp_dport)
+
+
+class VppBFDAuthKey(VppObject):
+    """ Represents BFD authentication key in VPP """
+
+    def __init__(self, test, conf_key_id, auth_type, key):
+        self._test = test
+        self._key = key
+        self._auth_type = auth_type
+        test.assertIn(auth_type, BFDAuthType.desc_dict)
+        self._conf_key_id = conf_key_id
+
+    @property
+    def test(self):
+        """ Test which created this key """
+        return self._test
+
+    @property
+    def auth_type(self):
+        """ Authentication type for this key """
+        return self._auth_type
+
+    @property
+    def key(self):
+        """ key data """
+        return self._key
+
+    @key.setter
+    def key(self, value):
+        self._key = value
+
+    @property
+    def conf_key_id(self):
+        """ configuration key ID """
+        return self._conf_key_id
+
+    def add_vpp_config(self):
+        self.test.vapi.bfd_auth_set_key(
+            conf_key_id=self._conf_key_id, auth_type=self._auth_type,
+            key=self._key, key_len=len(self._key))
+        self._test.registry.register(self, self.test.logger)
+
+    def get_bfd_auth_keys_dump_entry(self):
+        """ get the entry in the auth keys dump corresponding to this key """
+        result = self.test.vapi.bfd_auth_keys_dump()
+        for k in result:
+            if k.conf_key_id == self._conf_key_id:
+                return k
+        return None
+
+    def query_vpp_config(self):
+        return self.get_bfd_auth_keys_dump_entry() is not None
+
+    def remove_vpp_config(self):
+        self.test.vapi.bfd_auth_del_key(conf_key_id=self._conf_key_id)
+
+    def object_id(self):
+        return "bfd-auth-key-%s" % self._conf_key_id
+
+
+class VppBFDUDPSession(VppObject):
+    """ Represents BFD UDP session in VPP """
+
+    def __init__(self, test, interface, peer_addr, local_addr=None, af=AF_INET,
+                 desired_min_tx=300000, required_min_rx=300000, detect_mult=3,
+                 sha1_key=None, bfd_key_id=None, is_tunnel=False):
+        self._test = test
+        self._interface = interface
+        self._af = af
+        if local_addr:
+            self._local_addr = local_addr
+        else:
+            self._local_addr = None
+        self._peer_addr = peer_addr
+        self._desired_min_tx = desired_min_tx
+        self._required_min_rx = required_min_rx
+        self._detect_mult = detect_mult
+        self._sha1_key = sha1_key
+        if bfd_key_id is not None:
+            self._bfd_key_id = bfd_key_id
+        else:
+            self._bfd_key_id = randint(0, 255)
+        self._is_tunnel = is_tunnel
+
+    @property
+    def test(self):
+        """ Test which created this session """
+        return self._test
+
+    @property
+    def interface(self):
+        """ Interface on which this session lives """
+        return self._interface
+
+    @property
+    def af(self):
+        """ Address family - AF_INET or AF_INET6 """
+        return self._af
+
+    @property
+    def local_addr(self):
+        """ BFD session local address (VPP address) """
+        if self._local_addr is None:
+            if self.af == AF_INET:
+                return self._interface.local_ip4
+            elif self.af == AF_INET6:
+                return self._interface.local_ip6
+            else:
+                raise Exception("Unexpected af '%s'" % self.af)
+        return self._local_addr
+
+    @property
+    def peer_addr(self):
+        """ BFD session peer address """
+        return self._peer_addr
+
+    def get_bfd_udp_session_dump_entry(self):
+        """ get the namedtuple entry from bfd udp session dump """
+        result = self.test.vapi.bfd_udp_session_dump()
+        for s in result:
+            self.test.logger.debug("session entry: %s" % str(s))
+            if s.sw_if_index == self.interface.sw_if_index:
+                if self.af == AF_INET \
+                        and self.interface.local_ip4 == str(s.local_addr) \
+                        and self.interface.remote_ip4 == str(s.peer_addr):
+                    return s
+                if self.af == AF_INET6 \
+                        and self.interface.local_ip6 == str(s.local_addr) \
+                        and self.interface.remote_ip6 == str(s.peer_addr):
+                    return s
+        return None
+
+    @property
+    def state(self):
+        """ BFD session state """
+        session = self.get_bfd_udp_session_dump_entry()
+        if session is None:
+            raise Exception("Could not find BFD session in VPP response")
+        return session.state
+
+    @property
+    def desired_min_tx(self):
+        """ desired minimum tx interval """
+        return self._desired_min_tx
+
+    @property
+    def required_min_rx(self):
+        """ required minimum rx interval """
+        return self._required_min_rx
+
+    @property
+    def detect_mult(self):
+        """ detect multiplier """
+        return self._detect_mult
+
+    @property
+    def sha1_key(self):
+        """ sha1 key """
+        return self._sha1_key
+
+    @property
+    def bfd_key_id(self):
+        """ bfd key id in use """
+        return self._bfd_key_id
+
+    @property
+    def is_tunnel(self):
+        return self._is_tunnel
+
+    def activate_auth(self, key, bfd_key_id=None, delayed=False):
+        """ activate authentication for this session """
+        self._bfd_key_id = bfd_key_id if bfd_key_id else randint(0, 255)
+        self._sha1_key = key
+        conf_key_id = self._sha1_key.conf_key_id
+        is_delayed = 1 if delayed else 0
+        self.test.vapi.bfd_udp_auth_activate(
+            sw_if_index=self._interface.sw_if_index,
+            local_addr=self.local_addr,
+            peer_addr=self.peer_addr,
+            bfd_key_id=self._bfd_key_id,
+            conf_key_id=conf_key_id,
+            is_delayed=is_delayed)
+
+    def deactivate_auth(self, delayed=False):
+        """ deactivate authentication """
+        self._bfd_key_id = None
+        self._sha1_key = None
+        is_delayed = 1 if delayed else 0
+        self.test.vapi.bfd_udp_auth_deactivate(
+            sw_if_index=self._interface.sw_if_index,
+            local_addr=self.local_addr,
+            peer_addr=self.peer_addr,
+            is_delayed=is_delayed)
+
+    def modify_parameters(self,
+                          detect_mult=None,
+                          desired_min_tx=None,
+                          required_min_rx=None):
+        """ modify session parameters """
+        if detect_mult:
+            self._detect_mult = detect_mult
+        if desired_min_tx:
+            self._desired_min_tx = desired_min_tx
+        if required_min_rx:
+            self._required_min_rx = required_min_rx
+        self.test.vapi.bfd_udp_mod(sw_if_index=self._interface.sw_if_index,
+                                   desired_min_tx=self.desired_min_tx,
+                                   required_min_rx=self.required_min_rx,
+                                   detect_mult=self.detect_mult,
+                                   local_addr=self.local_addr,
+                                   peer_addr=self.peer_addr)
+
+    def add_vpp_config(self):
+        bfd_key_id = self._bfd_key_id if self._sha1_key else None
+        conf_key_id = self._sha1_key.conf_key_id if self._sha1_key else None
+        is_authenticated = True if self._sha1_key else False
+        self.test.vapi.bfd_udp_add(sw_if_index=self._interface.sw_if_index,
+                                   desired_min_tx=self.desired_min_tx,
+                                   required_min_rx=self.required_min_rx,
+                                   detect_mult=self.detect_mult,
+                                   local_addr=self.local_addr,
+                                   peer_addr=self.peer_addr,
+                                   bfd_key_id=bfd_key_id,
+                                   conf_key_id=conf_key_id,
+                                   is_authenticated=is_authenticated)
+        self._test.registry.register(self, self.test.logger)
+
+    def query_vpp_config(self):
+        session = self.get_bfd_udp_session_dump_entry()
+        return session is not None
+
+    def remove_vpp_config(self):
+        self.test.vapi.bfd_udp_del(self._interface.sw_if_index,
+                                   local_addr=self.local_addr,
+                                   peer_addr=self.peer_addr)
+
+    def object_id(self):
+        return "bfd-udp-%s-%s-%s-%s" % (self._interface.sw_if_index,
+                                        self.local_addr,
+                                        self.peer_addr,
+                                        self.af)
+
+    def admin_up(self):
+        """ set bfd session admin-up """
+        self.test.vapi.bfd_udp_session_set_flags(
+            flags=VppEnum.vl_api_if_status_flags_t.IF_STATUS_API_FLAG_ADMIN_UP,
+            sw_if_index=self._interface.sw_if_index,
+            local_addr=self.local_addr,
+            peer_addr=self.peer_addr)
+
+    def admin_down(self):
+        """ set bfd session admin-down """
+        self.test.vapi.bfd_udp_session_set_flags(
+            flags=0, sw_if_index=self._interface.sw_if_index,
+            local_addr=self.local_addr,
+            peer_addr=self.peer_addr)
diff --git a/test/doc/Makefile b/test/doc/Makefile
index 608df0a..2d06ced 100644
--- a/test/doc/Makefile
+++ b/test/doc/Makefile
@@ -19,9 +19,6 @@
 ifndef TEST_DOC_BR
 	$(error TEST_DOC_BR is not set)
 endif
-ifndef BUILD_TEST_SRC
-	$(error BUILD_TEST_SRC is not set)
-endif
 ifeq ($(IN_VENV),0)
 	$(error "Not running inside virtualenv (are you running 'make test-doc' from root?)")
 endif
@@ -32,7 +29,7 @@
 	@cp $(SRC_DOC_DIR)/index.rst $(API_DOC_GEN_DIR)
 	@cp $(SRC_DOC_DIR)/indices.rst $(API_DOC_GEN_DIR)
 	@cp $(SRC_DOC_DIR)/overview.rst $(API_DOC_GEN_DIR)
-	sphinx-apidoc -o $(API_DOC_GEN_DIR) -H "Module documentation" $(BUILD_TEST_SRC)
+	sphinx-apidoc -o $(API_DOC_GEN_DIR) -H "Module documentation" $(TEST_DIR)
 
 .PHONY: html
 html: regen-api-doc verify-virtualenv
diff --git a/test/doc/conf.py b/test/doc/conf.py
index f5e9749..f73cde2 100644
--- a/test/doc/conf.py
+++ b/test/doc/conf.py
@@ -18,7 +18,9 @@
 #
 import os
 import sys
-sys.path.insert(0, os.path.abspath('../../build-root/build-test/src'))
+import subprocess
+from datetime import date
+sys.path.insert(0, os.path.abspath('..'))
 
 # -- General configuration ------------------------------------------------
 
@@ -59,17 +61,18 @@
 
 # General information about the project.
 project = u'VPP test framework'
-copyright = u'2019, VPP team'
-author = u'VPP team'
+copyright = f'{date.today().year}, FD.io VPP team'
+author = u'FD.io VPP team'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'20.01'
+output = subprocess.run(['../../src/scripts/version'], stdout=subprocess.PIPE)
+version = f'{output.stdout.decode("utf-8")}'
 # The full version, including alpha/beta/rc tags.
-release = u'20.01-rc0'
+release = f'{output.stdout.decode("utf-8")}'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/test/test_abf.py b/test/test_abf.py
new file mode 100644
index 0000000..097476b
--- /dev/null
+++ b/test/test_abf.py
@@ -0,0 +1,330 @@
+#!/usr/bin/env python3
+
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsLabel, \
+    VppIpTable, FibPathProto
+from vpp_acl import AclRule, VppAcl
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+from ipaddress import IPv4Network, IPv6Network
+
+from vpp_object import VppObject
+
+NUM_PKTS = 67
+
+
+def find_abf_policy(test, id):
+    policies = test.vapi.abf_policy_dump()
+    for p in policies:
+        if id == p.policy.policy_id:
+            return True
+    return False
+
+
+def find_abf_itf_attach(test, id, sw_if_index):
+    attachs = test.vapi.abf_itf_attach_dump()
+    for a in attachs:
+        if id == a.attach.policy_id and \
+           sw_if_index == a.attach.sw_if_index:
+            return True
+    return False
+
+
+class VppAbfPolicy(VppObject):
+
+    def __init__(self,
+                 test,
+                 policy_id,
+                 acl,
+                 paths):
+        self._test = test
+        self.policy_id = policy_id
+        self.acl = acl
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+
+    def add_vpp_config(self):
+        self._test.vapi.abf_policy_add_del(
+            1,
+            {'policy_id': self.policy_id,
+             'acl_index': self.acl.acl_index,
+             'n_paths': len(self.paths),
+             'paths': self.encoded_paths})
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.abf_policy_add_del(
+            0,
+            {'policy_id': self.policy_id,
+             'acl_index': self.acl.acl_index,
+             'n_paths': len(self.paths),
+             'paths': self.encoded_paths})
+
+    def query_vpp_config(self):
+        return find_abf_policy(self._test, self.policy_id)
+
+    def object_id(self):
+        return ("abf-policy-%d" % self.policy_id)
+
+
+class VppAbfAttach(VppObject):
+
+    def __init__(self,
+                 test,
+                 policy_id,
+                 sw_if_index,
+                 priority,
+                 is_ipv6=0):
+        self._test = test
+        self.policy_id = policy_id
+        self.sw_if_index = sw_if_index
+        self.priority = priority
+        self.is_ipv6 = is_ipv6
+
+    def add_vpp_config(self):
+        self._test.vapi.abf_itf_attach_add_del(
+            1,
+            {'policy_id': self.policy_id,
+             'sw_if_index': self.sw_if_index,
+             'priority': self.priority,
+             'is_ipv6': self.is_ipv6})
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.abf_itf_attach_add_del(
+            0,
+            {'policy_id': self.policy_id,
+             'sw_if_index': self.sw_if_index,
+             'priority': self.priority,
+             'is_ipv6': self.is_ipv6})
+
+    def query_vpp_config(self):
+        return find_abf_itf_attach(self._test,
+                                   self.policy_id,
+                                   self.sw_if_index)
+
+    def object_id(self):
+        return ("abf-attach-%d-%d" % (self.policy_id, self.sw_if_index))
+
+
+class TestAbf(VppTestCase):
+    """ ABF Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestAbf, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestAbf, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestAbf, self).setUp()
+
+        self.create_pg_interfaces(range(5))
+
+        for i in self.pg_interfaces[:4]:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestAbf, self).tearDown()
+
+    def test_abf4(self):
+        """ IPv4 ACL Based Forwarding
+        """
+
+        #
+        # We are not testing the various matching capabilities
+        # of ACLs, that's done elsewhere. Here ware are testing
+        # the application of ACLs to a forwarding path to achieve
+        # ABF
+        # So we construct just a few ACLs to ensure the ABF policies
+        # are correctly constructed and used. And a few path types
+        # to test the API path decoding.
+        #
+
+        #
+        # Rule 1
+        #
+        rule_1 = AclRule(is_permit=1, proto=17, ports=1234,
+                         src_prefix=IPv4Network("1.1.1.1/32"),
+                         dst_prefix=IPv4Network("1.1.1.2/32"))
+        acl_1 = VppAcl(self, rules=[rule_1])
+        acl_1.add_vpp_config()
+
+        #
+        # ABF policy for ACL 1 - path via interface 1
+        #
+        abf_1 = VppAbfPolicy(self, 10, acl_1,
+                             [VppRoutePath(self.pg1.remote_ip4,
+                                           self.pg1.sw_if_index)])
+        abf_1.add_vpp_config()
+
+        #
+        # Attach the policy to input interface Pg0
+        #
+        attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
+        attach_1.add_vpp_config()
+
+        #
+        # fire in packet matching the ACL src,dst. If it's forwarded
+        # then the ABF was successful, since default routing will drop it
+        #
+        p_1 = (Ether(src=self.pg0.remote_mac,
+                     dst=self.pg0.local_mac) /
+               IP(src="1.1.1.1", dst="1.1.1.2") /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg1)
+
+        #
+        # Attach a 'better' priority policy to the same interface
+        #
+        abf_2 = VppAbfPolicy(self, 11, acl_1,
+                             [VppRoutePath(self.pg2.remote_ip4,
+                                           self.pg2.sw_if_index)])
+        abf_2.add_vpp_config()
+        attach_2 = VppAbfAttach(self, 11, self.pg0.sw_if_index, 40)
+        attach_2.add_vpp_config()
+
+        self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg2)
+
+        #
+        # Attach a policy with priority in the middle
+        #
+        abf_3 = VppAbfPolicy(self, 12, acl_1,
+                             [VppRoutePath(self.pg3.remote_ip4,
+                                           self.pg3.sw_if_index)])
+        abf_3.add_vpp_config()
+        attach_3 = VppAbfAttach(self, 12, self.pg0.sw_if_index, 45)
+        attach_3.add_vpp_config()
+
+        self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg2)
+
+        #
+        # remove the best priority
+        #
+        attach_2.remove_vpp_config()
+        self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg3)
+
+        #
+        # Attach one of the same policies to Pg1
+        #
+        attach_4 = VppAbfAttach(self, 12, self.pg1.sw_if_index, 45)
+        attach_4.add_vpp_config()
+
+        p_2 = (Ether(src=self.pg1.remote_mac,
+                     dst=self.pg1.local_mac) /
+               IP(src="1.1.1.1", dst="1.1.1.2") /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg1, p_2 * NUM_PKTS, self.pg3)
+
+        #
+        # detach the policy from PG1, now expect traffic to be dropped
+        #
+        attach_4.remove_vpp_config()
+
+        self.send_and_assert_no_replies(self.pg1, p_2 * NUM_PKTS, "Detached")
+
+        #
+        # Swap to route via a next-hop in the non-default table
+        #
+        table_20 = VppIpTable(self, 20)
+        table_20.add_vpp_config()
+
+        self.pg4.set_table_ip4(table_20.table_id)
+        self.pg4.admin_up()
+        self.pg4.config_ip4()
+        self.pg4.resolve_arp()
+
+        abf_13 = VppAbfPolicy(self, 13, acl_1,
+                              [VppRoutePath(self.pg4.remote_ip4,
+                                            0xffffffff,
+                                            nh_table_id=table_20.table_id)])
+        abf_13.add_vpp_config()
+        attach_5 = VppAbfAttach(self, 13, self.pg0.sw_if_index, 30)
+        attach_5.add_vpp_config()
+
+        self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg4)
+
+        self.pg4.unconfig_ip4()
+        self.pg4.set_table_ip4(0)
+
+    def test_abf6(self):
+        """ IPv6 ACL Based Forwarding
+        """
+
+        #
+        # Simple test for matching IPv6 packets
+        #
+
+        #
+        # Rule 1
+        #
+        rule_1 = AclRule(is_permit=1, proto=17, ports=1234,
+                         src_prefix=IPv6Network("2001::2/128"),
+                         dst_prefix=IPv6Network("2001::1/128"))
+        acl_1 = VppAcl(self, rules=[rule_1])
+        acl_1.add_vpp_config()
+
+        #
+        # ABF policy for ACL 1 - path via interface 1
+        #
+        abf_1 = VppAbfPolicy(self, 10, acl_1,
+                             [VppRoutePath("3001::1",
+                                           0xffffffff)])
+        abf_1.add_vpp_config()
+
+        attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index,
+                                45, is_ipv6=True)
+        attach_1.add_vpp_config()
+
+        #
+        # a packet matching the rule
+        #
+        p = (Ether(src=self.pg0.remote_mac,
+                   dst=self.pg0.local_mac) /
+             IPv6(src="2001::2", dst="2001::1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        #
+        # packets are dropped because there is no route to the policy's
+        # next hop
+        #
+        self.send_and_assert_no_replies(self.pg1, p * NUM_PKTS, "no route")
+
+        #
+        # add a route resolving the next-hop
+        #
+        route = VppIpRoute(self, "3001::1", 32,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        #
+        # now expect packets forwarded.
+        #
+        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_acl_plugin.py b/test/test_acl_plugin.py
new file mode 100644
index 0000000..53d9621
--- /dev/null
+++ b/test/test_acl_plugin.py
@@ -0,0 +1,1438 @@
+#!/usr/bin/env python3
+"""ACL plugin Test Case HLD:
+"""
+
+import unittest
+import random
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
+from scapy.layers.inet6 import IPv6ExtHdrFragment
+from framework import VppTestCase, VppTestRunner
+from framework import tag_fixme_vpp_workers
+from util import Host, ppp
+from ipaddress import IPv4Network, IPv6Network
+
+from vpp_lo_interface import VppLoInterface
+from vpp_acl import AclRule, VppAcl, VppAclInterface, VppEtypeWhitelist
+from vpp_ip import INVALID_INDEX
+
+
+@tag_fixme_vpp_workers
+class TestACLplugin(VppTestCase):
+    """ ACL plugin Test Case """
+
+    # traffic types
+    IP = 0
+    ICMP = 1
+
+    # IP version
+    IPRANDOM = -1
+    IPV4 = 0
+    IPV6 = 1
+
+    # rule types
+    DENY = 0
+    PERMIT = 1
+
+    # supported protocols
+    proto = [[6, 17], [1, 58]]
+    proto_map = {1: 'ICMP', 58: 'ICMPv6EchoRequest', 6: 'TCP', 17: 'UDP'}
+    ICMPv4 = 0
+    ICMPv6 = 1
+    TCP = 0
+    UDP = 1
+    PROTO_ALL = 0
+
+    # port ranges
+    PORTS_ALL = -1
+    PORTS_RANGE = 0
+    PORTS_RANGE_2 = 1
+    udp_sport_from = 10
+    udp_sport_to = udp_sport_from + 5
+    udp_dport_from = 20000
+    udp_dport_to = udp_dport_from + 5000
+    tcp_sport_from = 30
+    tcp_sport_to = tcp_sport_from + 5
+    tcp_dport_from = 40000
+    tcp_dport_to = tcp_dport_from + 5000
+
+    udp_sport_from_2 = 90
+    udp_sport_to_2 = udp_sport_from_2 + 5
+    udp_dport_from_2 = 30000
+    udp_dport_to_2 = udp_dport_from_2 + 5000
+    tcp_sport_from_2 = 130
+    tcp_sport_to_2 = tcp_sport_from_2 + 5
+    tcp_dport_from_2 = 20000
+    tcp_dport_to_2 = tcp_dport_from_2 + 5000
+
+    icmp4_type = 8  # echo request
+    icmp4_code = 3
+    icmp6_type = 128  # echo request
+    icmp6_code = 3
+
+    icmp4_type_2 = 8
+    icmp4_code_from_2 = 5
+    icmp4_code_to_2 = 20
+    icmp6_type_2 = 128
+    icmp6_code_from_2 = 8
+    icmp6_code_to_2 = 42
+
+    # Test variables
+    bd_id = 1
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        Perform standard class setup (defined by class method setUpClass in
+        class VppTestCase) before running the test case, set test case related
+        variables and configure VPP.
+        """
+        super(TestACLplugin, cls).setUpClass()
+
+        try:
+            # Create 2 pg interfaces
+            cls.create_pg_interfaces(range(2))
+
+            # Packet flows mapping pg0 -> pg1, pg2 etc.
+            cls.flows = dict()
+            cls.flows[cls.pg0] = [cls.pg1]
+
+            # Packet sizes
+            cls.pg_if_packet_sizes = [64, 512, 1518, 9018]
+
+            # Create BD with MAC learning and unknown unicast flooding disabled
+            # and put interfaces to this BD
+            cls.vapi.bridge_domain_add_del(bd_id=cls.bd_id, uu_flood=1,
+                                           learn=1)
+            for pg_if in cls.pg_interfaces:
+                cls.vapi.sw_interface_set_l2_bridge(
+                    rx_sw_if_index=pg_if.sw_if_index, bd_id=cls.bd_id)
+
+            # Set up all interfaces
+            for i in cls.pg_interfaces:
+                i.admin_up()
+
+            # Mapping between packet-generator index and lists of test hosts
+            cls.hosts_by_pg_idx = dict()
+            for pg_if in cls.pg_interfaces:
+                cls.hosts_by_pg_idx[pg_if.sw_if_index] = []
+
+            # Create list of deleted hosts
+            cls.deleted_hosts_by_pg_idx = dict()
+            for pg_if in cls.pg_interfaces:
+                cls.deleted_hosts_by_pg_idx[pg_if.sw_if_index] = []
+
+            # warm-up the mac address tables
+            # self.warmup_test()
+            count = 16
+            start = 0
+            n_int = len(cls.pg_interfaces)
+            macs_per_if = count // n_int
+            i = -1
+            for pg_if in cls.pg_interfaces:
+                i += 1
+                start_nr = macs_per_if * i + start
+                end_nr = count + start if i == (n_int - 1) \
+                    else macs_per_if * (i + 1) + start
+                hosts = cls.hosts_by_pg_idx[pg_if.sw_if_index]
+                for j in range(int(start_nr), int(end_nr)):
+                    host = Host(
+                        "00:00:00:ff:%02x:%02x" % (pg_if.sw_if_index, j),
+                        "172.17.1%02x.%u" % (pg_if.sw_if_index, j),
+                        "2017:dead:%02x::%u" % (pg_if.sw_if_index, j))
+                    hosts.append(host)
+
+        except Exception:
+            super(TestACLplugin, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestACLplugin, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestACLplugin, self).setUp()
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """
+        Show various debug prints after each test.
+        """
+        super(TestACLplugin, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        cli = "show vlib graph l2-input-feat-arc"
+        self.logger.info(self.vapi.ppcli(cli))
+        cli = "show vlib graph l2-input-feat-arc-end"
+        self.logger.info(self.vapi.ppcli(cli))
+        cli = "show vlib graph l2-output-feat-arc"
+        self.logger.info(self.vapi.ppcli(cli))
+        cli = "show vlib graph l2-output-feat-arc-end"
+        self.logger.info(self.vapi.ppcli(cli))
+        self.logger.info(self.vapi.ppcli("show l2fib verbose"))
+        self.logger.info(self.vapi.ppcli("show acl-plugin acl"))
+        self.logger.info(self.vapi.ppcli("show acl-plugin interface"))
+        self.logger.info(self.vapi.ppcli("show acl-plugin tables"))
+        self.logger.info(self.vapi.ppcli("show bridge-domain %s detail"
+                                         % self.bd_id))
+
+    def create_rule(self, ip=0, permit_deny=0, ports=PORTS_ALL, proto=-1,
+                    s_prefix=0, s_ip=0,
+                    d_prefix=0, d_ip=0):
+        if ip:
+            src_prefix = IPv6Network((s_ip, s_prefix))
+            dst_prefix = IPv6Network((d_ip, d_prefix))
+        else:
+            src_prefix = IPv4Network((s_ip, s_prefix))
+            dst_prefix = IPv4Network((d_ip, d_prefix))
+        return AclRule(is_permit=permit_deny, ports=ports, proto=proto,
+                       src_prefix=src_prefix, dst_prefix=dst_prefix)
+
+    def apply_rules(self, rules, tag=None):
+        acl = VppAcl(self, rules, tag=tag)
+        acl.add_vpp_config()
+        self.logger.info("Dumped ACL: " + str(acl.dump()))
+        # Apply a ACL on the interface as inbound
+        for i in self.pg_interfaces:
+            acl_if = VppAclInterface(
+                self, sw_if_index=i.sw_if_index, n_input=1, acls=[acl])
+            acl_if.add_vpp_config()
+        return acl.acl_index
+
+    def apply_rules_to(self, rules, tag=None, sw_if_index=INVALID_INDEX):
+        acl = VppAcl(self, rules, tag=tag)
+        acl.add_vpp_config()
+        self.logger.info("Dumped ACL: " + str(acl.dump()))
+        # Apply a ACL on the interface as inbound
+        acl_if = VppAclInterface(self, sw_if_index=sw_if_index, n_input=1,
+                                 acls=[acl])
+        return acl.acl_index
+
+    def etype_whitelist(self, whitelist, n_input, add=True):
+        # Apply whitelists on all the interfaces
+        if add:
+            self._wl = []
+            for i in self.pg_interfaces:
+                self._wl.append(VppEtypeWhitelist(
+                    self, sw_if_index=i.sw_if_index, whitelist=whitelist,
+                    n_input=n_input).add_vpp_config())
+        else:
+            if hasattr(self, "_wl"):
+                for wl in self._wl:
+                    wl.remove_vpp_config()
+
+    def create_upper_layer(self, packet_index, proto, ports=0):
+        p = self.proto_map[proto]
+        if p == 'UDP':
+            if ports == 0:
+                return UDP(sport=random.randint(self.udp_sport_from,
+                                                self.udp_sport_to),
+                           dport=random.randint(self.udp_dport_from,
+                                                self.udp_dport_to))
+            else:
+                return UDP(sport=ports, dport=ports)
+        elif p == 'TCP':
+            if ports == 0:
+                return TCP(sport=random.randint(self.tcp_sport_from,
+                                                self.tcp_sport_to),
+                           dport=random.randint(self.tcp_dport_from,
+                                                self.tcp_dport_to))
+            else:
+                return TCP(sport=ports, dport=ports)
+        return ''
+
+    def create_stream(self, src_if, packet_sizes, traffic_type=0, ipv6=0,
+                      proto=-1, ports=0, fragments=False,
+                      pkt_raw=True, etype=-1):
+        """
+        Create input packet stream for defined interface using hosts or
+        deleted_hosts list.
+
+        :param object src_if: Interface to create packet stream for.
+        :param list packet_sizes: List of required packet sizes.
+        :param traffic_type: 1: ICMP packet, 2: IPv6 with EH, 0: otherwise.
+        :return: Stream of packets.
+        """
+        pkts = []
+        if self.flows.__contains__(src_if):
+            src_hosts = self.hosts_by_pg_idx[src_if.sw_if_index]
+            for dst_if in self.flows[src_if]:
+                dst_hosts = self.hosts_by_pg_idx[dst_if.sw_if_index]
+                n_int = len(dst_hosts) * len(src_hosts)
+                for i in range(0, n_int):
+                    dst_host = dst_hosts[int(i / len(src_hosts))]
+                    src_host = src_hosts[i % len(src_hosts)]
+                    pkt_info = self.create_packet_info(src_if, dst_if)
+                    if ipv6 == 1:
+                        pkt_info.ip = 1
+                    elif ipv6 == 0:
+                        pkt_info.ip = 0
+                    else:
+                        pkt_info.ip = random.choice([0, 1])
+                    if proto == -1:
+                        pkt_info.proto = random.choice(self.proto[self.IP])
+                    else:
+                        pkt_info.proto = proto
+                    payload = self.info_to_payload(pkt_info)
+                    p = Ether(dst=dst_host.mac, src=src_host.mac)
+                    if etype > 0:
+                        p = Ether(dst=dst_host.mac,
+                                  src=src_host.mac,
+                                  type=etype)
+                    if pkt_info.ip:
+                        p /= IPv6(dst=dst_host.ip6, src=src_host.ip6)
+                        if fragments:
+                            p /= IPv6ExtHdrFragment(offset=64, m=1)
+                    else:
+                        if fragments:
+                            p /= IP(src=src_host.ip4, dst=dst_host.ip4,
+                                    flags=1, frag=64)
+                        else:
+                            p /= IP(src=src_host.ip4, dst=dst_host.ip4)
+                    if traffic_type == self.ICMP:
+                        if pkt_info.ip:
+                            p /= ICMPv6EchoRequest(type=self.icmp6_type,
+                                                   code=self.icmp6_code)
+                        else:
+                            p /= ICMP(type=self.icmp4_type,
+                                      code=self.icmp4_code)
+                    else:
+                        p /= self.create_upper_layer(i, pkt_info.proto, ports)
+                    if pkt_raw:
+                        p /= Raw(payload)
+                        pkt_info.data = p.copy()
+                    if pkt_raw:
+                        size = random.choice(packet_sizes)
+                        self.extend_packet(p, size)
+                    pkts.append(p)
+        return pkts
+
+    def verify_capture(self, pg_if, capture,
+                       traffic_type=0, ip_type=0, etype=-1):
+        """
+        Verify captured input packet stream for defined interface.
+
+        :param object pg_if: Interface to verify captured packet stream for.
+        :param list capture: Captured packet stream.
+        :param traffic_type: 1: ICMP packet, 2: IPv6 with EH, 0: otherwise.
+        """
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = pg_if.sw_if_index
+        for packet in capture:
+            if etype > 0:
+                if packet[Ether].type != etype:
+                    self.logger.error(ppp("Unexpected ethertype in packet:",
+                                          packet))
+                else:
+                    continue
+            try:
+                # Raw data for ICMPv6 are stored in ICMPv6EchoRequest.data
+                if traffic_type == self.ICMP and ip_type == self.IPV6:
+                    payload_info = self.payload_to_info(
+                        packet[ICMPv6EchoRequest], 'data')
+                    payload = packet[ICMPv6EchoRequest]
+                else:
+                    payload_info = self.payload_to_info(packet[Raw])
+                    payload = packet[self.proto_map[payload_info.proto]]
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+            if ip_type != 0:
+                self.assertEqual(payload_info.ip, ip_type)
+            if traffic_type == self.ICMP:
+                try:
+                    if payload_info.ip == 0:
+                        self.assertEqual(payload.type, self.icmp4_type)
+                        self.assertEqual(payload.code, self.icmp4_code)
+                    else:
+                        self.assertEqual(payload.type, self.icmp6_type)
+                        self.assertEqual(payload.code, self.icmp6_code)
+                except:
+                    self.logger.error(ppp("Unexpected or invalid packet "
+                                          "(outside network):", packet))
+                    raise
+            else:
+                try:
+                    ip_version = IPv6 if payload_info.ip == 1 else IP
+
+                    ip = packet[ip_version]
+                    packet_index = payload_info.index
+
+                    self.assertEqual(payload_info.dst, dst_sw_if_index)
+                    self.logger.debug("Got packet on port %s: src=%u (id=%u)" %
+                                      (pg_if.name, payload_info.src,
+                                       packet_index))
+                    next_info = self.get_next_packet_info_for_interface2(
+                        payload_info.src, dst_sw_if_index,
+                        last_info[payload_info.src])
+                    last_info[payload_info.src] = next_info
+                    self.assertTrue(next_info is not None)
+                    self.assertEqual(packet_index, next_info.index)
+                    saved_packet = next_info.data
+                    # Check standard fields
+                    self.assertEqual(ip.src, saved_packet[ip_version].src)
+                    self.assertEqual(ip.dst, saved_packet[ip_version].dst)
+                    p = self.proto_map[payload_info.proto]
+                    if p == 'TCP':
+                        tcp = packet[TCP]
+                        self.assertEqual(tcp.sport, saved_packet[
+                            TCP].sport)
+                        self.assertEqual(tcp.dport, saved_packet[
+                            TCP].dport)
+                    elif p == 'UDP':
+                        udp = packet[UDP]
+                        self.assertEqual(udp.sport, saved_packet[
+                            UDP].sport)
+                        self.assertEqual(udp.dport, saved_packet[
+                            UDP].dport)
+                except:
+                    self.logger.error(ppp("Unexpected or invalid packet:",
+                                          packet))
+                    raise
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(
+                remaining_packet is None,
+                "Port %u: Packet expected from source %u didn't arrive" %
+                (dst_sw_if_index, i.sw_if_index))
+
+    def run_traffic_no_check(self):
+        # Test
+        # Create incoming packet streams for packet-generator interfaces
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+
+        # Enable packet capture and start packet sending
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+    def run_verify_test(self, traffic_type=0, ip_type=0, proto=-1, ports=0,
+                        frags=False, pkt_raw=True, etype=-1):
+        # Test
+        # Create incoming packet streams for packet-generator interfaces
+        pkts_cnt = 0
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes,
+                                          traffic_type, ip_type, proto, ports,
+                                          frags, pkt_raw, etype)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+                    pkts_cnt += len(pkts)
+
+        # Enable packet capture and start packet sendingself.IPV
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.logger.info("sent packets count: %d" % pkts_cnt)
+
+        # Verify
+        # Verify outgoing packet streams per packet-generator interface
+        for src_if in self.pg_interfaces:
+            if self.flows.__contains__(src_if):
+                for dst_if in self.flows[src_if]:
+                    capture = dst_if.get_capture(pkts_cnt)
+                    self.logger.info("Verifying capture on interface %s" %
+                                     dst_if.name)
+                    self.verify_capture(dst_if, capture,
+                                        traffic_type, ip_type, etype)
+
+    def run_verify_negat_test(self, traffic_type=0, ip_type=0, proto=-1,
+                              ports=0, frags=False, etype=-1):
+        # Test
+        pkts_cnt = 0
+        self.reset_packet_infos()
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes,
+                                          traffic_type, ip_type, proto, ports,
+                                          frags, True, etype)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+                    pkts_cnt += len(pkts)
+
+        # Enable packet capture and start packet sending
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.logger.info("sent packets count: %d" % pkts_cnt)
+
+        # Verify
+        # Verify outgoing packet streams per packet-generator interface
+        for src_if in self.pg_interfaces:
+            if self.flows.__contains__(src_if):
+                for dst_if in self.flows[src_if]:
+                    self.logger.info("Verifying capture on interface %s" %
+                                     dst_if.name)
+                    capture = dst_if.get_capture(0)
+                    self.assertEqual(len(capture), 0)
+
+    def test_0000_warmup_test(self):
+        """ ACL plugin version check; learn MACs
+        """
+        reply = self.vapi.papi.acl_plugin_get_version()
+        self.assertEqual(reply.major, 1)
+        self.logger.info("Working with ACL plugin version: %d.%d" % (
+            reply.major, reply.minor))
+        # minor version changes are non breaking
+        # self.assertEqual(reply.minor, 0)
+
+    def test_0001_acl_create(self):
+        """ ACL create/delete test
+        """
+
+        self.logger.info("ACLP_TEST_START_0001")
+        # Create a permit-1234 ACL
+        r = [AclRule(is_permit=1, proto=17, ports=1234, sport_to=1235)]
+        # Test 1: add a new ACL
+        first_acl = VppAcl(self, rules=r, tag="permit 1234")
+        first_acl.add_vpp_config()
+        self.assertTrue(first_acl.query_vpp_config())
+        # The very first ACL gets #0
+        self.assertEqual(first_acl.acl_index, 0)
+        rr = first_acl.dump()
+        self.logger.info("Dumped ACL: " + str(rr))
+        self.assertEqual(len(rr), 1)
+        # We should have the same number of ACL entries as we had asked
+        self.assertEqual(len(rr[0].r), len(r))
+        # The rules should be the same. But because the submitted and returned
+        # are different types, we need to iterate over rules and keys to get
+        # to basic values.
+        for i_rule in range(0, len(r) - 1):
+            encoded_rule = r[i_rule].encode()
+            for rule_key in encoded_rule:
+                self.assertEqual(rr[0].r[i_rule][rule_key],
+                                 encoded_rule[rule_key])
+
+        # Create a deny-1234 ACL
+        r_deny = [AclRule(is_permit=0, proto=17, ports=1234, sport_to=1235),
+                  AclRule(is_permit=1, proto=17, ports=0)]
+        second_acl = VppAcl(self, rules=r_deny, tag="deny 1234;permit all")
+        second_acl.add_vpp_config()
+        self.assertTrue(second_acl.query_vpp_config())
+        # The second ACL gets #1
+        self.assertEqual(second_acl.acl_index, 1)
+
+        # Test 2: try to modify a nonexistent ACL
+        invalid_acl = VppAcl(self, acl_index=432, rules=r, tag="FFFF:FFFF")
+        reply = invalid_acl.add_vpp_config(expect_error=True)
+
+        # apply an ACL on an interface inbound, try to delete ACL, must fail
+        acl_if_list = VppAclInterface(
+            self, sw_if_index=self.pg0.sw_if_index, n_input=1,
+            acls=[first_acl])
+        acl_if_list.add_vpp_config()
+        first_acl.remove_vpp_config(expect_error=True)
+        # Unapply an ACL and then try to delete it - must be ok
+        acl_if_list.remove_vpp_config()
+        first_acl.remove_vpp_config()
+
+        # apply an ACL on an interface inbound, try to delete ACL, must fail
+        acl_if_list = VppAclInterface(
+            self, sw_if_index=self.pg0.sw_if_index, n_input=0,
+            acls=[second_acl])
+        acl_if_list.add_vpp_config()
+        second_acl.remove_vpp_config(expect_error=True)
+        # Unapply an ACL and then try to delete it - must be ok
+        acl_if_list.remove_vpp_config()
+        second_acl.remove_vpp_config()
+
+        # try to apply a nonexistent ACL - must fail
+        acl_if_list = VppAclInterface(
+            self, sw_if_index=self.pg0.sw_if_index, n_input=0,
+            acls=[invalid_acl])
+        acl_if_list.add_vpp_config(expect_error=True)
+
+        self.logger.info("ACLP_TEST_FINISH_0001")
+
+    def test_0002_acl_permit_apply(self):
+        """ permit ACL apply test
+        """
+        self.logger.info("ACLP_TEST_START_0002")
+
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      0, self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      0, self.proto[self.IP][self.TCP]))
+
+        # Apply rules
+        acl_idx = self.apply_rules(rules, "permit per-flow")
+
+        # enable counters
+        reply = self.vapi.papi.acl_stats_intf_counters_enable(enable=1)
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+        matches = self.statistics.get_counter('/acl/%d/matches' % acl_idx)
+        self.logger.info("stat segment counters: %s" % repr(matches))
+        cli = "show acl-plugin acl"
+        self.logger.info(self.vapi.ppcli(cli))
+        cli = "show acl-plugin tables"
+        self.logger.info(self.vapi.ppcli(cli))
+
+        total_hits = matches[0][0]['packets'] + matches[0][1]['packets']
+        self.assertEqual(total_hits, 64)
+
+        # disable counters
+        reply = self.vapi.papi.acl_stats_intf_counters_enable(enable=0)
+
+        self.logger.info("ACLP_TEST_FINISH_0002")
+
+    def test_0003_acl_deny_apply(self):
+        """ deny ACL apply test
+        """
+        self.logger.info("ACLP_TEST_START_0003")
+        # Add a deny-flows ACL
+        rules = []
+        rules.append(self.create_rule(
+            self.IPV4, self.DENY, self.PORTS_ALL,
+            self.proto[self.IP][self.UDP]))
+        # Permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        acl_idx = self.apply_rules(rules, "deny per-flow;permit all")
+
+        # enable counters
+        reply = self.vapi.papi.acl_stats_intf_counters_enable(enable=1)
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPV4,
+                                   self.proto[self.IP][self.UDP])
+
+        matches = self.statistics.get_counter('/acl/%d/matches' % acl_idx)
+        self.logger.info("stat segment counters: %s" % repr(matches))
+        cli = "show acl-plugin acl"
+        self.logger.info(self.vapi.ppcli(cli))
+        cli = "show acl-plugin tables"
+        self.logger.info(self.vapi.ppcli(cli))
+        self.assertEqual(matches[0][0]['packets'], 64)
+        # disable counters
+        reply = self.vapi.papi.acl_stats_intf_counters_enable(enable=0)
+        self.logger.info("ACLP_TEST_FINISH_0003")
+        # self.assertEqual(, 0)
+
+    def test_0004_vpp624_permit_icmpv4(self):
+        """ VPP_624 permit ICMPv4
+        """
+        self.logger.info("ACLP_TEST_START_0004")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.ICMP][self.ICMPv4]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit icmpv4")
+
+        # Traffic should still pass
+        self.run_verify_test(self.ICMP, self.IPV4,
+                             self.proto[self.ICMP][self.ICMPv4])
+
+        self.logger.info("ACLP_TEST_FINISH_0004")
+
+    def test_0005_vpp624_permit_icmpv6(self):
+        """ VPP_624 permit ICMPv6
+        """
+        self.logger.info("ACLP_TEST_START_0005")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.ICMP][self.ICMPv6]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit icmpv6")
+
+        # Traffic should still pass
+        self.run_verify_test(self.ICMP, self.IPV6,
+                             self.proto[self.ICMP][self.ICMPv6])
+
+        self.logger.info("ACLP_TEST_FINISH_0005")
+
+    def test_0006_vpp624_deny_icmpv4(self):
+        """ VPP_624 deny ICMPv4
+        """
+        self.logger.info("ACLP_TEST_START_0006")
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.ICMP][self.ICMPv4]))
+        # permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny icmpv4")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.ICMP, self.IPV4, 0)
+
+        self.logger.info("ACLP_TEST_FINISH_0006")
+
+    def test_0007_vpp624_deny_icmpv6(self):
+        """ VPP_624 deny ICMPv6
+        """
+        self.logger.info("ACLP_TEST_START_0007")
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.ICMP][self.ICMPv6]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny icmpv6")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.ICMP, self.IPV6, 0)
+
+        self.logger.info("ACLP_TEST_FINISH_0007")
+
+    def test_0008_tcp_permit_v4(self):
+        """ permit TCPv4
+        """
+        self.logger.info("ACLP_TEST_START_0008")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0008")
+
+    def test_0009_tcp_permit_v6(self):
+        """ permit TCPv6
+        """
+        self.logger.info("ACLP_TEST_START_0009")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip6 tcp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6, self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0008")
+
+    def test_0010_udp_permit_v4(self):
+        """ permit UDPv4
+        """
+        self.logger.info("ACLP_TEST_START_0010")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv udp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0010")
+
+    def test_0011_udp_permit_v6(self):
+        """ permit UDPv6
+        """
+        self.logger.info("ACLP_TEST_START_0011")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip6 udp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6, self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0011")
+
+    def test_0012_tcp_deny(self):
+        """ deny TCPv4/v6
+        """
+        self.logger.info("ACLP_TEST_START_0012")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 tcp")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0012")
+
+    def test_0013_udp_deny(self):
+        """ deny UDPv4/v6
+        """
+        self.logger.info("ACLP_TEST_START_0013")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 udp")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0013")
+
+    def test_0014_acl_dump(self):
+        """ verify add/dump acls
+        """
+        self.logger.info("ACLP_TEST_START_0014")
+
+        r = [[self.IPV4, self.PERMIT, 1234, self.proto[self.IP][self.TCP]],
+             [self.IPV4, self.PERMIT, 2345, self.proto[self.IP][self.UDP]],
+             [self.IPV4, self.PERMIT, 0, self.proto[self.IP][self.TCP]],
+             [self.IPV4, self.PERMIT, 0, self.proto[self.IP][self.UDP]],
+             [self.IPV4, self.PERMIT, 5, self.proto[self.ICMP][self.ICMPv4]],
+             [self.IPV6, self.PERMIT, 4321, self.proto[self.IP][self.TCP]],
+             [self.IPV6, self.PERMIT, 5432, self.proto[self.IP][self.UDP]],
+             [self.IPV6, self.PERMIT, 0, self.proto[self.IP][self.TCP]],
+             [self.IPV6, self.PERMIT, 0, self.proto[self.IP][self.UDP]],
+             [self.IPV6, self.PERMIT, 6, self.proto[self.ICMP][self.ICMPv6]],
+             [self.IPV4, self.DENY, self.PORTS_ALL, 0],
+             [self.IPV4, self.DENY, 1234, self.proto[self.IP][self.TCP]],
+             [self.IPV4, self.DENY, 2345, self.proto[self.IP][self.UDP]],
+             [self.IPV4, self.DENY, 5, self.proto[self.ICMP][self.ICMPv4]],
+             [self.IPV6, self.DENY, 4321, self.proto[self.IP][self.TCP]],
+             [self.IPV6, self.DENY, 5432, self.proto[self.IP][self.UDP]],
+             [self.IPV6, self.DENY, 6, self.proto[self.ICMP][self.ICMPv6]],
+             [self.IPV6, self.DENY, self.PORTS_ALL, 0]
+             ]
+
+        # Add and verify new ACLs
+        rules = []
+        for i in range(len(r)):
+            rules.append(self.create_rule(r[i][0], r[i][1], r[i][2], r[i][3]))
+
+        acl = VppAcl(self, rules=rules)
+        acl.add_vpp_config()
+        result = acl.dump()
+
+        i = 0
+        for drules in result:
+            for dr in drules.r:
+                self.assertEqual(dr.is_permit, r[i][1])
+                self.assertEqual(dr.proto, r[i][3])
+
+                if r[i][2] > 0:
+                    self.assertEqual(dr.srcport_or_icmptype_first, r[i][2])
+                else:
+                    if r[i][2] < 0:
+                        self.assertEqual(dr.srcport_or_icmptype_first, 0)
+                        self.assertEqual(dr.srcport_or_icmptype_last, 65535)
+                    else:
+                        if dr.proto == self.proto[self.IP][self.TCP]:
+                            self.assertGreater(dr.srcport_or_icmptype_first,
+                                               self.tcp_sport_from-1)
+                            self.assertLess(dr.srcport_or_icmptype_first,
+                                            self.tcp_sport_to+1)
+                            self.assertGreater(dr.dstport_or_icmpcode_last,
+                                               self.tcp_dport_from-1)
+                            self.assertLess(dr.dstport_or_icmpcode_last,
+                                            self.tcp_dport_to+1)
+                        elif dr.proto == self.proto[self.IP][self.UDP]:
+                            self.assertGreater(dr.srcport_or_icmptype_first,
+                                               self.udp_sport_from-1)
+                            self.assertLess(dr.srcport_or_icmptype_first,
+                                            self.udp_sport_to+1)
+                            self.assertGreater(dr.dstport_or_icmpcode_last,
+                                               self.udp_dport_from-1)
+                            self.assertLess(dr.dstport_or_icmpcode_last,
+                                            self.udp_dport_to+1)
+                i += 1
+
+        self.logger.info("ACLP_TEST_FINISH_0014")
+
+    def test_0015_tcp_permit_port_v4(self):
+        """ permit single TCPv4
+        """
+        self.logger.info("ACLP_TEST_START_0015")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, port,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip4 tcp %d" % port)
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4,
+                             self.proto[self.IP][self.TCP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0015")
+
+    def test_0016_udp_permit_port_v4(self):
+        """ permit single UDPv4
+        """
+        self.logger.info("ACLP_TEST_START_0016")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, port,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip4 tcp %d" % port)
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4,
+                             self.proto[self.IP][self.UDP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0016")
+
+    def test_0017_tcp_permit_port_v6(self):
+        """ permit single TCPv6
+        """
+        self.logger.info("ACLP_TEST_START_0017")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, port,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip4 tcp %d" % port)
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6,
+                             self.proto[self.IP][self.TCP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0017")
+
+    def test_0018_udp_permit_port_v6(self):
+        """ permit single UDPv6
+        """
+        self.logger.info("ACLP_TEST_START_0018")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, port,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip4 tcp %d" % port)
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6,
+                             self.proto[self.IP][self.UDP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0018")
+
+    def test_0019_udp_deny_port(self):
+        """ deny single TCPv4/v6
+        """
+        self.logger.info("ACLP_TEST_START_0019")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, port,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, port,
+                                      self.proto[self.IP][self.TCP]))
+        # Permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 udp %d" % port)
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.TCP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0019")
+
+    def test_0020_udp_deny_port(self):
+        """ deny single UDPv4/v6
+        """
+        self.logger.info("ACLP_TEST_START_0020")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, port,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, port,
+                                      self.proto[self.IP][self.UDP]))
+        # Permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 udp %d" % port)
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.UDP], port)
+
+        self.logger.info("ACLP_TEST_FINISH_0020")
+
+    def test_0021_udp_deny_port_verify_fragment_deny(self):
+        """ deny single UDPv4/v6, permit ip any, verify non-initial fragment
+        blocked
+        """
+        self.logger.info("ACLP_TEST_START_0021")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, port,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, port,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 udp %d" % port)
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.UDP], port, True)
+
+        self.logger.info("ACLP_TEST_FINISH_0021")
+
+    def test_0022_zero_length_udp_ipv4(self):
+        """ VPP-687 zero length udp ipv4 packet"""
+        self.logger.info("ACLP_TEST_START_0022")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, port,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(
+            self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit empty udp ip4 %d" % port)
+
+        # Traffic should still pass
+        # Create incoming packet streams for packet-generator interfaces
+        pkts_cnt = 0
+        pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes,
+                                  self.IP, self.IPV4,
+                                  self.proto[self.IP][self.UDP], port,
+                                  False, False)
+        if len(pkts) > 0:
+            self.pg0.add_stream(pkts)
+            pkts_cnt += len(pkts)
+
+        # Enable packet capture and start packet sendingself.IPV
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.pg1.get_capture(pkts_cnt)
+
+        self.logger.info("ACLP_TEST_FINISH_0022")
+
+    def test_0023_zero_length_udp_ipv6(self):
+        """ VPP-687 zero length udp ipv6 packet"""
+        self.logger.info("ACLP_TEST_START_0023")
+
+        port = random.randint(16384, 65535)
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, port,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit empty udp ip6 %d" % port)
+
+        # Traffic should still pass
+        # Create incoming packet streams for packet-generator interfaces
+        pkts_cnt = 0
+        pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes,
+                                  self.IP, self.IPV6,
+                                  self.proto[self.IP][self.UDP], port,
+                                  False, False)
+        if len(pkts) > 0:
+            self.pg0.add_stream(pkts)
+            pkts_cnt += len(pkts)
+
+        # Enable packet capture and start packet sendingself.IPV
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Verify outgoing packet streams per packet-generator interface
+        self.pg1.get_capture(pkts_cnt)
+
+        self.logger.info("ACLP_TEST_FINISH_0023")
+
+    def test_0108_tcp_permit_v4(self):
+        """ permit TCPv4 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0108")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0108")
+
+    def test_0109_tcp_permit_v6(self):
+        """ permit TCPv6 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0109")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip6 tcp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6, self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0109")
+
+    def test_0110_udp_permit_v4(self):
+        """ permit UDPv4 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0110")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 udp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0110")
+
+    def test_0111_udp_permit_v6(self):
+        """ permit UDPv6 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0111")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ip6 udp")
+
+        # Traffic should still pass
+        self.run_verify_test(self.IP, self.IPV6, self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0111")
+
+    def test_0112_tcp_deny(self):
+        """ deny TCPv4/v6 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0112")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 tcp")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.TCP])
+
+        self.logger.info("ACLP_TEST_FINISH_0112")
+
+    def test_0113_udp_deny(self):
+        """ deny UDPv4/v6 + non-match range
+        """
+        self.logger.info("ACLP_TEST_START_0113")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        rules.append(self.create_rule(self.IPV6, self.DENY, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.UDP]))
+        # permit ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+        rules.append(self.create_rule(self.IPV6, self.PERMIT,
+                                      self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "deny ip4/ip6 udp")
+
+        # Traffic should not pass
+        self.run_verify_negat_test(self.IP, self.IPRANDOM,
+                                   self.proto[self.IP][self.UDP])
+
+        self.logger.info("ACLP_TEST_FINISH_0113")
+
+    def test_0300_tcp_permit_v4_etype_aaaa(self):
+        """ permit TCPv4, send 0xAAAA etype
+        """
+        self.logger.info("ACLP_TEST_START_0300")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+
+        # Traffic should still pass also for an odd ethertype
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.TCP],
+                             0, False, True, 0xaaaa)
+        self.logger.info("ACLP_TEST_FINISH_0300")
+
+    def test_0305_tcp_permit_v4_etype_blacklist_aaaa(self):
+        """ permit TCPv4, whitelist 0x0BBB ethertype, send 0xAAAA-blocked
+        """
+        self.logger.info("ACLP_TEST_START_0305")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+        # whitelist the 0xbbbb etype - so the 0xaaaa should be blocked
+        self.etype_whitelist([0xbbb], 1)
+
+        # The oddball ethertype should be blocked
+        self.run_verify_negat_test(self.IP, self.IPV4,
+                                   self.proto[self.IP][self.TCP],
+                                   0, False, 0xaaaa)
+
+        # remove the whitelist
+        self.etype_whitelist([], 0, add=False)
+
+        self.logger.info("ACLP_TEST_FINISH_0305")
+
+    def test_0306_tcp_permit_v4_etype_blacklist_aaaa(self):
+        """ permit TCPv4, whitelist 0x0BBB ethertype, send 0x0BBB - pass
+        """
+        self.logger.info("ACLP_TEST_START_0306")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+        # whitelist the 0xbbbb etype - so the 0xaaaa should be blocked
+        self.etype_whitelist([0xbbb], 1)
+
+        # The whitelisted traffic, should pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.TCP],
+                             0, False, True, 0x0bbb)
+
+        # remove the whitelist, the previously blocked 0xAAAA should pass now
+        self.etype_whitelist([], 0, add=False)
+
+        self.logger.info("ACLP_TEST_FINISH_0306")
+
+    def test_0307_tcp_permit_v4_etype_blacklist_aaaa(self):
+        """ permit TCPv4, whitelist 0x0BBB, remove, send 0xAAAA - pass
+        """
+        self.logger.info("ACLP_TEST_START_0307")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # Apply rules
+        self.apply_rules(rules, "permit ipv4 tcp")
+
+        # whitelist the 0xbbbb etype - so the 0xaaaa should be blocked
+        self.etype_whitelist([0xbbb], 1)
+        # remove the whitelist, the previously blocked 0xAAAA should pass now
+        self.etype_whitelist([], 0, add=False)
+
+        # The whitelisted traffic, should pass
+        self.run_verify_test(self.IP, self.IPV4, self.proto[self.IP][self.TCP],
+                             0, False, True, 0xaaaa)
+
+        self.logger.info("ACLP_TEST_FINISH_0306")
+
+    def test_0315_del_intf(self):
+        """ apply an acl and delete the interface
+        """
+        self.logger.info("ACLP_TEST_START_0315")
+
+        # Add an ACL
+        rules = []
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_RANGE_2,
+                                      self.proto[self.IP][self.TCP]))
+        rules.append(self.create_rule(self.IPV4, self.PERMIT, self.PORTS_RANGE,
+                                      self.proto[self.IP][self.TCP]))
+        # deny ip any any in the end
+        rules.append(self.create_rule(self.IPV4, self.DENY, self.PORTS_ALL, 0))
+
+        # create an interface
+        intf = []
+        intf.append(VppLoInterface(self))
+
+        # Apply rules
+        self.apply_rules_to(rules, "permit ipv4 tcp", intf[0].sw_if_index)
+
+        # Remove the interface
+        intf[0].remove_vpp_config()
+
+        self.logger.info("ACLP_TEST_FINISH_0315")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_acl_plugin_conns.py b/test/test_acl_plugin_conns.py
new file mode 100644
index 0000000..c7941fa
--- /dev/null
+++ b/test/test_acl_plugin_conns.py
@@ -0,0 +1,405 @@
+#!/usr/bin/env python3
+""" ACL plugin extended stateful tests """
+
+import unittest
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP, TCP
+from scapy.packet import Packet
+from socket import inet_pton, AF_INET, AF_INET6
+from scapy.layers.inet6 import IPv6, ICMPv6Unknown, ICMPv6EchoRequest
+from scapy.layers.inet6 import ICMPv6EchoReply, IPv6ExtHdrRouting
+from scapy.layers.inet6 import IPv6ExtHdrFragment
+from pprint import pprint
+from random import randint
+from util import L4_Conn
+from ipaddress import ip_network
+
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+
+
+def to_acl_rule(self, is_permit, wildcard_sport=False):
+    p = self
+    rule_family = AF_INET6 if p.haslayer(IPv6) else AF_INET
+    rule_prefix_len = 128 if p.haslayer(IPv6) else 32
+    rule_l3_layer = IPv6 if p.haslayer(IPv6) else IP
+    rule_l4_sport = p.sport
+    rule_l4_dport = p.dport
+    if p.haslayer(IPv6):
+        rule_l4_proto = p[IPv6].nh
+    else:
+        rule_l4_proto = p[IP].proto
+
+    if wildcard_sport:
+        rule_l4_sport_first = 0
+        rule_l4_sport_last = 65535
+    else:
+        rule_l4_sport_first = rule_l4_sport
+        rule_l4_sport_last = rule_l4_sport
+
+    new_rule = AclRule(is_permit=is_permit, proto=rule_l4_proto,
+                       src_prefix=ip_network(
+                           (p[rule_l3_layer].src, rule_prefix_len)),
+                       dst_prefix=ip_network(
+                           (p[rule_l3_layer].dst, rule_prefix_len)),
+                       sport_from=rule_l4_sport_first,
+                       sport_to=rule_l4_sport_last,
+                       dport_from=rule_l4_dport, dport_to=rule_l4_dport)
+
+    return new_rule
+
+
+Packet.to_acl_rule = to_acl_rule
+
+
+class IterateWithSleep():
+    def __init__(self, testcase, n_iters, description, sleep_sec):
+        self.curr = 0
+        self.testcase = testcase
+        self.n_iters = n_iters
+        self.sleep_sec = sleep_sec
+        self.description = description
+
+    def __iter__(self):
+        for x in range(0, self.n_iters):
+            yield x
+            self.testcase.sleep(self.sleep_sec)
+
+
+class Conn(L4_Conn):
+    def apply_acls(self, reflect_side, acl_side):
+        pkts = []
+        pkts.append(self.pkt(0))
+        pkts.append(self.pkt(1))
+        pkt = pkts[reflect_side]
+
+        r = []
+        r.append(pkt.to_acl_rule(2, wildcard_sport=True))
+        r.append(self.wildcard_rule(0))
+        reflect_acl = VppAcl(self.testcase, r)
+        reflect_acl.add_vpp_config()
+
+        r = []
+        r.append(self.wildcard_rule(0))
+        deny_acl = VppAcl(self.testcase, r)
+        deny_acl.add_vpp_config()
+
+        if reflect_side == acl_side:
+            acl_if0 = VppAclInterface(self.testcase,
+                                      self.ifs[acl_side].sw_if_index,
+                                      [reflect_acl, deny_acl], n_input=1)
+            acl_if1 = VppAclInterface(self.testcase,
+                                      self.ifs[1-acl_side].sw_if_index, [],
+                                      n_input=0)
+            acl_if0.add_vpp_config()
+            acl_if1.add_vpp_config()
+        else:
+            acl_if0 = VppAclInterface(self.testcase,
+                                      self.ifs[acl_side].sw_if_index,
+                                      [deny_acl, reflect_acl], n_input=1)
+            acl_if1 = VppAclInterface(self.testcase,
+                                      self.ifs[1-acl_side].sw_if_index, [],
+                                      n_input=0)
+            acl_if0.add_vpp_config()
+            acl_if1.add_vpp_config()
+
+    def wildcard_rule(self, is_permit):
+        any_addr = ["0.0.0.0", "::"]
+        rule_family = self.address_family
+        is_ip6 = 1 if rule_family == AF_INET6 else 0
+        new_rule = AclRule(is_permit=is_permit, proto=0,
+                           src_prefix=ip_network(
+                               (any_addr[is_ip6], 0)),
+                           dst_prefix=ip_network(
+                               (any_addr[is_ip6], 0)),
+                           sport_from=0, sport_to=65535, dport_from=0,
+                           dport_to=65535)
+        return new_rule
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class ACLPluginConnTestCase(VppTestCase):
+    """ ACL plugin connection-oriented extended testcases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(ACLPluginConnTestCase, cls).setUpClass()
+        # create pg0 and pg1
+        cls.create_pg_interfaces(range(2))
+        cmd = "set acl-plugin session table event-trace 1"
+        cls.logger.info(cls.vapi.cli(cmd))
+        for i in cls.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.config_ip6()
+            i.resolve_arp()
+            i.resolve_ndp()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(ACLPluginConnTestCase, cls).tearDownClass()
+
+    def tearDown(self):
+        """Run standard test teardown and log various show commands
+        """
+        super(ACLPluginConnTestCase, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show ip neighbors"))
+        self.logger.info(self.vapi.cli("show ip6 neighbors"))
+        self.logger.info(self.vapi.cli("show acl-plugin sessions"))
+        self.logger.info(self.vapi.cli("show acl-plugin acl"))
+        self.logger.info(self.vapi.cli("show acl-plugin interface"))
+        self.logger.info(self.vapi.cli("show acl-plugin tables"))
+        self.logger.info(self.vapi.cli("show event-logger all"))
+
+    def run_basic_conn_test(self, af, acl_side):
+        """ Basic conn timeout test """
+        conn1 = Conn(self, self.pg0, self.pg1, af, UDP, 42001, 4242)
+        conn1.apply_acls(0, acl_side)
+        conn1.send_through(0)
+        # the return packets should pass
+        conn1.send_through(1)
+        # send some packets on conn1, ensure it doesn't go away
+        for i in IterateWithSleep(self, 20, "Keep conn active", 0.3):
+            conn1.send_through(1)
+        # allow the conn to time out
+        for i in IterateWithSleep(self, 30, "Wait for timeout", 0.1):
+            pass
+        # now try to send a packet on the reflected side
+        try:
+            p2 = conn1.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        self.assert_equal(p2, None, "packet on long-idle conn")
+
+    def run_active_conn_test(self, af, acl_side):
+        """ Idle connection behind active connection test """
+        base = 10000 + 1000*acl_side
+        conn1 = Conn(self, self.pg0, self.pg1, af, UDP, base + 1, 2323)
+        conn2 = Conn(self, self.pg0, self.pg1, af, UDP, base + 2, 2323)
+        conn3 = Conn(self, self.pg0, self.pg1, af, UDP, base + 3, 2323)
+        conn1.apply_acls(0, acl_side)
+        conn1.send(0)
+        conn1.recv(1)
+        # create and check that the conn2/3 work
+        self.sleep(0.1)
+        conn2.send_pingpong(0)
+        self.sleep(0.1)
+        conn3.send_pingpong(0)
+        # send some packets on conn1, keep conn2/3 idle
+        for i in IterateWithSleep(self, 20, "Keep conn active", 0.2):
+            conn1.send_through(1)
+        try:
+            p2 = conn2.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        # We should have not received the packet on a long-idle
+        # connection, because it should have timed out
+        # If it didn't - it is a problem
+        self.assert_equal(p2, None, "packet on long-idle conn")
+
+    def run_clear_conn_test(self, af, acl_side):
+        """ Clear the connections via CLI """
+        conn1 = Conn(self, self.pg0, self.pg1, af, UDP, 42001, 4242)
+        conn1.apply_acls(0, acl_side)
+        conn1.send_through(0)
+        # the return packets should pass
+        conn1.send_through(1)
+        # send some packets on conn1, ensure it doesn't go away
+        for i in IterateWithSleep(self, 20, "Keep conn active", 0.3):
+            conn1.send_through(1)
+        # clear all connections
+        self.vapi.ppcli("clear acl-plugin sessions")
+        # now try to send a packet on the reflected side
+        try:
+            p2 = conn1.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        self.assert_equal(p2, None, "packet on supposedly deleted conn")
+
+    def run_tcp_transient_setup_conn_test(self, af, acl_side):
+        conn1 = Conn(self, self.pg0, self.pg1, af, TCP, 53001, 5151)
+        conn1.apply_acls(0, acl_side)
+        conn1.send_through(0, 'S')
+        # the return packets should pass
+        conn1.send_through(1, 'SA')
+        # allow the conn to time out
+        for i in IterateWithSleep(self, 30, "Wait for timeout", 0.1):
+            pass
+        # ensure conn times out
+        try:
+            p2 = conn1.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        self.assert_equal(p2, None, "packet on supposedly deleted conn")
+
+    def run_tcp_established_conn_test(self, af, acl_side):
+        conn1 = Conn(self, self.pg0, self.pg1, af, TCP, 53002, 5052)
+        conn1.apply_acls(0, acl_side)
+        conn1.send_through(0, 'S')
+        # the return packets should pass
+        conn1.send_through(1, 'SA')
+        # complete the threeway handshake
+        # (NB: sequence numbers not tracked, so not set!)
+        conn1.send_through(0, 'A')
+        # allow the conn to time out if it's in embryonic timer
+        for i in IterateWithSleep(self, 30, "Wait for transient timeout", 0.1):
+            pass
+        # Try to send the packet from the "forbidden" side - it must pass
+        conn1.send_through(1, 'A')
+        # ensure conn times out for real
+        for i in IterateWithSleep(self, 130, "Wait for timeout", 0.1):
+            pass
+        try:
+            p2 = conn1.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        self.assert_equal(p2, None, "packet on supposedly deleted conn")
+
+    def run_tcp_transient_teardown_conn_test(self, af, acl_side):
+        conn1 = Conn(self, self.pg0, self.pg1, af, TCP, 53002, 5052)
+        conn1.apply_acls(0, acl_side)
+        conn1.send_through(0, 'S')
+        # the return packets should pass
+        conn1.send_through(1, 'SA')
+        # complete the threeway handshake
+        # (NB: sequence numbers not tracked, so not set!)
+        conn1.send_through(0, 'A')
+        # allow the conn to time out if it's in embryonic timer
+        for i in IterateWithSleep(self, 30, "Wait for transient timeout", 0.1):
+            pass
+        # Try to send the packet from the "forbidden" side - it must pass
+        conn1.send_through(1, 'A')
+        # Send the FIN to bounce the session out of established
+        conn1.send_through(1, 'FA')
+        # If conn landed on transient timer it will time out here
+        for i in IterateWithSleep(self, 30, "Wait for transient timeout", 0.1):
+            pass
+        # Now it should have timed out already
+        try:
+            p2 = conn1.send_through(1).command()
+        except:
+            # If we asserted while waiting, it's good.
+            # the conn should have timed out.
+            p2 = None
+        self.assert_equal(p2, None, "packet on supposedly deleted conn")
+
+    def test_0000_conn_prepare_test(self):
+        """ Prepare the settings """
+        self.vapi.ppcli("set acl-plugin session timeout udp idle 1")
+
+    def test_0001_basic_conn_test(self):
+        """ IPv4: Basic conn timeout test reflect on ingress """
+        self.run_basic_conn_test(AF_INET, 0)
+
+    def test_0002_basic_conn_test(self):
+        """ IPv4: Basic conn timeout test reflect on egress """
+        self.run_basic_conn_test(AF_INET, 1)
+
+    def test_0005_clear_conn_test(self):
+        """ IPv4: reflect egress, clear conn """
+        self.run_clear_conn_test(AF_INET, 1)
+
+    def test_0006_clear_conn_test(self):
+        """ IPv4: reflect ingress, clear conn """
+        self.run_clear_conn_test(AF_INET, 0)
+
+    def test_0011_active_conn_test(self):
+        """ IPv4: Idle conn behind active conn, reflect on ingress """
+        self.run_active_conn_test(AF_INET, 0)
+
+    def test_0012_active_conn_test(self):
+        """ IPv4: Idle conn behind active conn, reflect on egress """
+        self.run_active_conn_test(AF_INET, 1)
+
+    def test_1001_basic_conn_test(self):
+        """ IPv6: Basic conn timeout test reflect on ingress """
+        self.run_basic_conn_test(AF_INET6, 0)
+
+    def test_1002_basic_conn_test(self):
+        """ IPv6: Basic conn timeout test reflect on egress """
+        self.run_basic_conn_test(AF_INET6, 1)
+
+    def test_1005_clear_conn_test(self):
+        """ IPv6: reflect egress, clear conn """
+        self.run_clear_conn_test(AF_INET6, 1)
+
+    def test_1006_clear_conn_test(self):
+        """ IPv6: reflect ingress, clear conn """
+        self.run_clear_conn_test(AF_INET6, 0)
+
+    def test_1011_active_conn_test(self):
+        """ IPv6: Idle conn behind active conn, reflect on ingress """
+        self.run_active_conn_test(AF_INET6, 0)
+
+    def test_1012_active_conn_test(self):
+        """ IPv6: Idle conn behind active conn, reflect on egress """
+        self.run_active_conn_test(AF_INET6, 1)
+
+    def test_2000_prepare_for_tcp_test(self):
+        """ Prepare for TCP session tests """
+        # ensure the session hangs on if it gets treated as UDP
+        self.vapi.ppcli("set acl-plugin session timeout udp idle 200")
+        # let the TCP connection time out at 5 seconds
+        self.vapi.ppcli("set acl-plugin session timeout tcp idle 10")
+        self.vapi.ppcli("set acl-plugin session timeout tcp transient 1")
+
+    def test_2001_tcp_transient_conn_test(self):
+        """ IPv4: transient TCP session (incomplete 3WHS), ref. on ingress """
+        self.run_tcp_transient_setup_conn_test(AF_INET, 0)
+
+    def test_2002_tcp_transient_conn_test(self):
+        """ IPv4: transient TCP session (incomplete 3WHS), ref. on egress """
+        self.run_tcp_transient_setup_conn_test(AF_INET, 1)
+
+    def test_2003_tcp_transient_conn_test(self):
+        """ IPv4: established TCP session (complete 3WHS), ref. on ingress """
+        self.run_tcp_established_conn_test(AF_INET, 0)
+
+    def test_2004_tcp_transient_conn_test(self):
+        """ IPv4: established TCP session (complete 3WHS), ref. on egress """
+        self.run_tcp_established_conn_test(AF_INET, 1)
+
+    def test_2005_tcp_transient_teardown_conn_test(self):
+        """ IPv4: transient TCP session (3WHS,ACK,FINACK), ref. on ingress """
+        self.run_tcp_transient_teardown_conn_test(AF_INET, 0)
+
+    def test_2006_tcp_transient_teardown_conn_test(self):
+        """ IPv4: transient TCP session (3WHS,ACK,FINACK), ref. on egress """
+        self.run_tcp_transient_teardown_conn_test(AF_INET, 1)
+
+    def test_3001_tcp_transient_conn_test(self):
+        """ IPv6: transient TCP session (incomplete 3WHS), ref. on ingress """
+        self.run_tcp_transient_setup_conn_test(AF_INET6, 0)
+
+    def test_3002_tcp_transient_conn_test(self):
+        """ IPv6: transient TCP session (incomplete 3WHS), ref. on egress """
+        self.run_tcp_transient_setup_conn_test(AF_INET6, 1)
+
+    def test_3003_tcp_transient_conn_test(self):
+        """ IPv6: established TCP session (complete 3WHS), ref. on ingress """
+        self.run_tcp_established_conn_test(AF_INET6, 0)
+
+    def test_3004_tcp_transient_conn_test(self):
+        """ IPv6: established TCP session (complete 3WHS), ref. on egress """
+        self.run_tcp_established_conn_test(AF_INET6, 1)
+
+    def test_3005_tcp_transient_teardown_conn_test(self):
+        """ IPv6: transient TCP session (3WHS,ACK,FINACK), ref. on ingress """
+        self.run_tcp_transient_teardown_conn_test(AF_INET6, 0)
+
+    def test_3006_tcp_transient_teardown_conn_test(self):
+        """ IPv6: transient TCP session (3WHS,ACK,FINACK), ref. on egress """
+        self.run_tcp_transient_teardown_conn_test(AF_INET6, 1)
diff --git a/test/test_acl_plugin_l2l3.py b/test/test_acl_plugin_l2l3.py
new file mode 100644
index 0000000..48faafb
--- /dev/null
+++ b/test/test_acl_plugin_l2l3.py
@@ -0,0 +1,864 @@
+#!/usr/bin/env python3
+"""ACL IRB Test Case HLD:
+
+**config**
+    - L2 MAC learning enabled in l2bd
+    - 2 routed interfaces untagged, bvi (Bridge Virtual Interface)
+    - 2 bridged interfaces in l2bd with bvi
+
+**test**
+    - sending ip4 eth pkts between routed interfaces
+        - 2 routed interfaces
+        - 2 bridged interfaces
+
+    - 64B, 512B, 1518B, 9200B (ether_size)
+
+    - burst of pkts per interface
+        - 257pkts per burst
+        - routed pkts hitting different FIB entries
+        - bridged pkts hitting different MAC entries
+
+**verify**
+    - all packets received correctly
+
+"""
+
+import copy
+import unittest
+from socket import inet_pton, AF_INET, AF_INET6
+from random import choice, shuffle
+from pprint import pprint
+from ipaddress import ip_network
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP, ICMP, TCP
+from scapy.layers.inet6 import IPv6, ICMPv6Unknown, ICMPv6EchoRequest
+from scapy.layers.inet6 import ICMPv6EchoReply, IPv6ExtHdrRouting
+from scapy.layers.inet6 import IPv6ExtHdrFragment
+
+from framework import VppTestCase, VppTestRunner
+from vpp_l2 import L2_PORT_TYPE
+import time
+
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+
+
+class TestACLpluginL2L3(VppTestCase):
+    """TestACLpluginL2L3 Test Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        #. Create BD with MAC learning enabled and put interfaces to this BD.
+        #. Configure IPv4 addresses on loopback interface and routed interface.
+        #. Configure MAC address binding to IPv4 neighbors on loop0.
+        #. Configure MAC address on pg2.
+        #. Loopback BVI interface has remote hosts, one half of hosts are
+           behind pg0 second behind pg1.
+        """
+        super(TestACLpluginL2L3, cls).setUpClass()
+
+        cls.pg_if_packet_sizes = [64, 512, 1518, 9018]  # packet sizes
+        cls.bd_id = 10
+        cls.remote_hosts_count = 250
+
+        # create 3 pg interfaces, 1 loopback interface
+        cls.create_pg_interfaces(range(3))
+        cls.create_loopback_interfaces(1)
+
+        cls.interfaces = list(cls.pg_interfaces)
+        cls.interfaces.extend(cls.lo_interfaces)
+
+        for i in cls.interfaces:
+            i.admin_up()
+
+        # Create BD with MAC learning enabled and put interfaces to this BD
+        cls.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=cls.loop0.sw_if_index, bd_id=cls.bd_id,
+            port_type=L2_PORT_TYPE.BVI)
+        cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=cls.pg0.sw_if_index,
+                                            bd_id=cls.bd_id)
+        cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=cls.pg1.sw_if_index,
+                                            bd_id=cls.bd_id)
+
+        # Configure IPv4 addresses on loopback interface and routed interface
+        cls.loop0.config_ip4()
+        cls.loop0.config_ip6()
+        cls.pg2.config_ip4()
+        cls.pg2.config_ip6()
+
+        # Configure MAC address binding to IPv4 neighbors on loop0
+        cls.loop0.generate_remote_hosts(cls.remote_hosts_count)
+        cls.loop0.configure_ipv4_neighbors()
+        cls.loop0.configure_ipv6_neighbors()
+        # configure MAC address on pg2
+        cls.pg2.resolve_arp()
+        cls.pg2.resolve_ndp()
+
+        cls.WITHOUT_EH = False
+        cls.WITH_EH = True
+        cls.STATELESS_ICMP = False
+        cls.STATEFUL_ICMP = True
+
+        # Loopback BVI interface has remote hosts, one half of hosts are behind
+        # pg0 second behind pg1
+        half = cls.remote_hosts_count // 2
+        cls.pg0.remote_hosts = cls.loop0.remote_hosts[:half]
+        cls.pg1.remote_hosts = cls.loop0.remote_hosts[half:]
+        reply = cls.vapi.papi.acl_stats_intf_counters_enable(enable=1)
+
+    @classmethod
+    def tearDownClass(cls):
+        reply = cls.vapi.papi.acl_stats_intf_counters_enable(enable=0)
+        super(TestACLpluginL2L3, cls).tearDownClass()
+
+    def tearDown(self):
+        """Run standard test teardown and log ``show l2patch``,
+        ``show l2fib verbose``,``show bridge-domain <bd_id> detail``,
+        ``show ip neighbors``.
+        """
+        super(TestACLpluginL2L3, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show l2patch"))
+        self.logger.info(self.vapi.cli("show classify tables"))
+        self.logger.info(self.vapi.cli("show l2fib verbose"))
+        self.logger.info(self.vapi.cli("show bridge-domain %s detail" %
+                                       self.bd_id))
+        self.logger.info(self.vapi.cli("show ip neighbors"))
+        cmd = "show acl-plugin sessions verbose 1"
+        self.logger.info(self.vapi.cli(cmd))
+        self.logger.info(self.vapi.cli("show acl-plugin acl"))
+        self.logger.info(self.vapi.cli("show acl-plugin interface"))
+        self.logger.info(self.vapi.cli("show acl-plugin tables"))
+
+    def create_stream(self, src_ip_if, dst_ip_if, reverse, packet_sizes,
+                      is_ip6, expect_blocked, expect_established,
+                      add_extension_header, icmp_stateful=False):
+        pkts = []
+        rules = []
+        permit_rules = []
+        permit_and_reflect_rules = []
+        total_packet_count = 8
+        for i in range(0, total_packet_count):
+            modulo = (i//2) % 2
+            icmp_type_delta = i % 2
+            icmp_code = i
+            is_udp_packet = (modulo == 0)
+            if is_udp_packet and icmp_stateful:
+                continue
+            is_reflectable_icmp = (icmp_stateful and icmp_type_delta == 0 and
+                                   not is_udp_packet)
+            is_reflected_icmp = is_reflectable_icmp and expect_established
+            can_reflect_this_packet = is_udp_packet or is_reflectable_icmp
+            is_permit = i % 2
+            remote_dst_index = i % len(dst_ip_if.remote_hosts)
+            remote_dst_host = dst_ip_if.remote_hosts[remote_dst_index]
+            if is_permit == 1:
+                info = self.create_packet_info(src_ip_if, dst_ip_if)
+                payload = self.info_to_payload(info)
+            else:
+                to_be_blocked = False
+                if (expect_blocked and not expect_established):
+                    to_be_blocked = True
+                if (not can_reflect_this_packet):
+                    to_be_blocked = True
+                if to_be_blocked:
+                    payload = "to be blocked"
+                else:
+                    info = self.create_packet_info(src_ip_if, dst_ip_if)
+                    payload = self.info_to_payload(info)
+            if reverse:
+                dst_mac = 'de:ad:00:00:00:00'
+                src_mac = remote_dst_host._mac
+                dst_ip6 = src_ip_if.remote_ip6
+                src_ip6 = remote_dst_host.ip6
+                dst_ip4 = src_ip_if.remote_ip4
+                src_ip4 = remote_dst_host.ip4
+                dst_l4 = 1234 + i
+                src_l4 = 4321 + i
+            else:
+                dst_mac = src_ip_if.local_mac
+                src_mac = src_ip_if.remote_mac
+                src_ip6 = src_ip_if.remote_ip6
+                dst_ip6 = remote_dst_host.ip6
+                src_ip4 = src_ip_if.remote_ip4
+                dst_ip4 = remote_dst_host.ip4
+                src_l4 = 1234 + i
+                dst_l4 = 4321 + i
+            if is_reflected_icmp:
+                icmp_type_delta = 1
+
+            # default ULP should be something we do not use in tests
+            ulp_l4 = TCP(sport=src_l4, dport=dst_l4)
+            # potentially a chain of protocols leading to ULP
+            ulp = ulp_l4
+
+            if is_udp_packet:
+                if is_ip6:
+                    ulp_l4 = UDP(sport=src_l4, dport=dst_l4)
+                    if add_extension_header:
+                        # prepend some extension headers
+                        ulp = (IPv6ExtHdrRouting() / IPv6ExtHdrRouting() /
+                               IPv6ExtHdrFragment(offset=0, m=1) / ulp_l4)
+                        # uncomment below to test invalid ones
+                        # ulp = IPv6ExtHdrRouting(len = 200) / ulp_l4
+                    else:
+                        ulp = ulp_l4
+                    p = (Ether(dst=dst_mac, src=src_mac) /
+                         IPv6(src=src_ip6, dst=dst_ip6) /
+                         ulp /
+                         Raw(payload))
+                else:
+                    ulp_l4 = UDP(sport=src_l4, dport=dst_l4)
+                    # IPv4 does not allow extension headers,
+                    # but we rather make it a first fragment
+                    flags = 1 if add_extension_header else 0
+                    ulp = ulp_l4
+                    p = (Ether(dst=dst_mac, src=src_mac) /
+                         IP(src=src_ip4, dst=dst_ip4, frag=0, flags=flags) /
+                         ulp /
+                         Raw(payload))
+            elif modulo == 1:
+                if is_ip6:
+                    ulp_l4 = ICMPv6Unknown(type=128 + icmp_type_delta,
+                                           code=icmp_code)
+                    ulp = ulp_l4
+                    p = (Ether(dst=dst_mac, src=src_mac) /
+                         IPv6(src=src_ip6, dst=dst_ip6) /
+                         ulp /
+                         Raw(payload))
+                else:
+                    ulp_l4 = ICMP(type=8 - 8*icmp_type_delta, code=icmp_code)
+                    ulp = ulp_l4
+                    p = (Ether(dst=dst_mac, src=src_mac) /
+                         IP(src=src_ip4, dst=dst_ip4) /
+                         ulp /
+                         Raw(payload))
+
+            if i % 2 == 1:
+                info.data = p.copy()
+            size = packet_sizes[(i // 2) % len(packet_sizes)]
+            self.extend_packet(p, size)
+            pkts.append(p)
+
+            rule_family = AF_INET6 if p.haslayer(IPv6) else AF_INET
+            rule_prefix_len = 128 if p.haslayer(IPv6) else 32
+            rule_l3_layer = IPv6 if p.haslayer(IPv6) else IP
+
+            if p.haslayer(UDP):
+                rule_l4_sport = p[UDP].sport
+                rule_l4_dport = p[UDP].dport
+            else:
+                if p.haslayer(ICMP):
+                    rule_l4_sport = p[ICMP].type
+                    rule_l4_dport = p[ICMP].code
+                else:
+                    rule_l4_sport = p[ICMPv6Unknown].type
+                    rule_l4_dport = p[ICMPv6Unknown].code
+            if p.haslayer(IPv6):
+                rule_l4_proto = ulp_l4.overload_fields[IPv6]['nh']
+            else:
+                rule_l4_proto = p[IP].proto
+
+            new_rule = AclRule(is_permit=is_permit, proto=rule_l4_proto,
+                               src_prefix=ip_network(
+                                   (p[rule_l3_layer].src, rule_prefix_len)),
+                               dst_prefix=ip_network(
+                                   (p[rule_l3_layer].dst, rule_prefix_len)),
+                               sport_from=rule_l4_sport,
+                               sport_to=rule_l4_sport,
+                               dport_from=rule_l4_dport,
+                               dport_to=rule_l4_dport)
+
+            rules.append(new_rule)
+            new_rule_permit = copy.copy(new_rule)
+            new_rule_permit.is_permit = 1
+            permit_rules.append(new_rule_permit)
+
+            new_rule_permit_and_reflect = copy.copy(new_rule)
+            if can_reflect_this_packet:
+                new_rule_permit_and_reflect.is_permit = 2
+            else:
+                new_rule_permit_and_reflect.is_permit = is_permit
+
+            permit_and_reflect_rules.append(new_rule_permit_and_reflect)
+            self.logger.info("create_stream pkt#%d: %s" % (i, payload))
+
+        return {'stream': pkts,
+                'rules': rules,
+                'permit_rules': permit_rules,
+                'permit_and_reflect_rules': permit_and_reflect_rules}
+
+    def verify_capture(self, dst_ip_if, src_ip_if, capture, reverse):
+        last_info = dict()
+        for i in self.interfaces:
+            last_info[i.sw_if_index] = None
+
+        dst_ip_sw_if_index = dst_ip_if.sw_if_index
+
+        for packet in capture:
+            l3 = IP if packet.haslayer(IP) else IPv6
+            ip = packet[l3]
+            if packet.haslayer(UDP):
+                l4 = UDP
+            else:
+                if packet.haslayer(ICMP):
+                    l4 = ICMP
+                else:
+                    l4 = ICMPv6Unknown
+
+            # Scapy IPv6 stuff is too smart for its own good.
+            # So we do this and coerce the ICMP into unknown type
+            if packet.haslayer(UDP):
+                data = scapy.compat.raw(packet[UDP][Raw])
+            else:
+                if l3 == IP:
+                    data = scapy.compat.raw(ICMP(
+                        scapy.compat.raw(packet[l3].payload))[Raw])
+                else:
+                    data = scapy.compat.raw(ICMPv6Unknown(
+                        scapy.compat.raw(packet[l3].payload)).msgbody)
+            udp_or_icmp = packet[l3].payload
+            data_obj = Raw(data)
+            # FIXME: make framework believe we are on object
+            payload_info = self.payload_to_info(data_obj)
+            packet_index = payload_info.index
+
+            self.assertEqual(payload_info.dst, dst_ip_sw_if_index)
+
+            next_info = self.get_next_packet_info_for_interface2(
+                payload_info.src, dst_ip_sw_if_index,
+                last_info[payload_info.src])
+            last_info[payload_info.src] = next_info
+            self.assertTrue(next_info is not None)
+            self.assertEqual(packet_index, next_info.index)
+            saved_packet = next_info.data
+            self.assertTrue(next_info is not None)
+
+            # MAC: src, dst
+            if not reverse:
+                self.assertEqual(packet.src, dst_ip_if.local_mac)
+                host = dst_ip_if.host_by_mac(packet.dst)
+
+            # IP: src, dst
+            # self.assertEqual(ip.src, src_ip_if.remote_ip4)
+            if saved_packet is not None:
+                self.assertEqual(ip.src, saved_packet[l3].src)
+                self.assertEqual(ip.dst, saved_packet[l3].dst)
+                if l4 == UDP:
+                    self.assertEqual(udp_or_icmp.sport, saved_packet[l4].sport)
+                    self.assertEqual(udp_or_icmp.dport, saved_packet[l4].dport)
+            # self.assertEqual(ip.dst, host.ip4)
+
+            # UDP:
+
+    def applied_acl_shuffle(self, acl_if):
+        saved_n_input = acl_if.n_input
+        # TOTO: maybe copy each one??
+        saved_acls = acl_if.acls
+
+        # now create a list of all the rules in all ACLs
+        all_rules = []
+        for old_acl in saved_acls:
+            for rule in old_acl.rules:
+                all_rules.append(rule)
+
+        # Add a few ACLs made from shuffled rules
+        shuffle(all_rules)
+        acl1 = VppAcl(self, rules=all_rules[::2], tag="shuffle 1. acl")
+        acl1.add_vpp_config()
+
+        shuffle(all_rules)
+        acl2 = VppAcl(self, rules=all_rules[::3], tag="shuffle 2. acl")
+        acl2.add_vpp_config()
+
+        shuffle(all_rules)
+        acl3 = VppAcl(self, rules=all_rules[::2], tag="shuffle 3. acl")
+        acl3.add_vpp_config()
+
+        # apply the shuffle ACLs in front
+        input_acls = [acl1, acl2]
+        output_acls = [acl1, acl2]
+
+        # add the currently applied ACLs
+        n_input = acl_if.n_input
+        input_acls.extend(saved_acls[:n_input])
+        output_acls.extend(saved_acls[n_input:])
+
+        # and the trailing shuffle ACL(s)
+        input_acls.extend([acl3])
+        output_acls.extend([acl3])
+
+        # set the interface ACL list to the result
+        acl_if.n_input = len(input_acls)
+        acl_if.acls = input_acls + output_acls
+        acl_if.add_vpp_config()
+
+        # change the ACLs a few times
+        for i in range(1, 10):
+            shuffle(all_rules)
+            acl1.modify_vpp_config(all_rules[::1+(i % 2)])
+
+            shuffle(all_rules)
+            acl2.modify_vpp_config(all_rules[::1+(i % 3)])
+
+            shuffle(all_rules)
+            acl3.modify_vpp_config(all_rules[::1+(i % 5)])
+
+        # restore to how it was before and clean up
+        acl_if.n_input = saved_n_input
+        acl_if.acls = saved_acls
+        acl_if.add_vpp_config()
+
+        acl1.remove_vpp_config()
+        acl2.remove_vpp_config()
+        acl3.remove_vpp_config()
+
+    def create_acls_for_a_stream(self, stream_dict,
+                                 test_l2_action, is_reflect):
+        r = stream_dict['rules']
+        r_permit = stream_dict['permit_rules']
+        r_permit_reflect = stream_dict['permit_and_reflect_rules']
+        r_action = r_permit_reflect if is_reflect else r
+        action_acl = VppAcl(self, rules=r_action, tag="act. acl")
+        action_acl.add_vpp_config()
+        permit_acl = VppAcl(self, rules=r_permit, tag="perm. acl")
+        permit_acl.add_vpp_config()
+
+        return {'L2': action_acl if test_l2_action else permit_acl,
+                'L3': permit_acl if test_l2_action else action_acl,
+                'permit': permit_acl, 'action': action_acl}
+
+    def apply_acl_ip46_x_to_y(self, bridged_to_routed, test_l2_deny,
+                              is_ip6, is_reflect, add_eh):
+        """ Apply the ACLs
+        """
+        self.reset_packet_infos()
+        stream_dict = self.create_stream(
+            self.pg2, self.loop0,
+            bridged_to_routed,
+            self.pg_if_packet_sizes, is_ip6,
+            not is_reflect, False, add_eh)
+        stream = stream_dict['stream']
+        acl_idx = self.create_acls_for_a_stream(stream_dict, test_l2_deny,
+                                                is_reflect)
+        n_input_l3 = 0 if bridged_to_routed else 1
+        n_input_l2 = 1 if bridged_to_routed else 0
+
+        acl_if_pg2 = VppAclInterface(self, sw_if_index=self.pg2.sw_if_index,
+                                     n_input=n_input_l3, acls=[acl_idx['L3']])
+        acl_if_pg2.add_vpp_config()
+
+        acl_if_pg0 = VppAclInterface(self, sw_if_index=self.pg0.sw_if_index,
+                                     n_input=n_input_l2, acls=[acl_idx['L2']])
+        acl_if_pg0.add_vpp_config()
+
+        acl_if_pg1 = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+                                     n_input=n_input_l2, acls=[acl_idx['L2']])
+        acl_if_pg1.add_vpp_config()
+
+        self.applied_acl_shuffle(acl_if_pg0)
+        self.applied_acl_shuffle(acl_if_pg1)
+        return {'L2': acl_idx['L2'], 'L3': acl_idx['L3']}
+
+    def apply_acl_ip46_both_directions_reflect(self,
+                                               primary_is_bridged_to_routed,
+                                               reflect_on_l2, is_ip6, add_eh,
+                                               stateful_icmp):
+        primary_is_routed_to_bridged = not primary_is_bridged_to_routed
+        self.reset_packet_infos()
+        stream_dict_fwd = self.create_stream(self.pg2, self.loop0,
+                                             primary_is_bridged_to_routed,
+                                             self.pg_if_packet_sizes, is_ip6,
+                                             False, False, add_eh,
+                                             stateful_icmp)
+        acl_idx_fwd = self.create_acls_for_a_stream(stream_dict_fwd,
+                                                    reflect_on_l2, True)
+
+        stream_dict_rev = self.create_stream(self.pg2, self.loop0,
+                                             not primary_is_bridged_to_routed,
+                                             self.pg_if_packet_sizes, is_ip6,
+                                             True, True, add_eh, stateful_icmp)
+        # We want the primary action to be "deny" rather than reflect
+        acl_idx_rev = self.create_acls_for_a_stream(stream_dict_rev,
+                                                    reflect_on_l2, False)
+
+        if primary_is_bridged_to_routed:
+            inbound_l2_acl = acl_idx_fwd['L2']
+        else:
+            inbound_l2_acl = acl_idx_rev['L2']
+
+        if primary_is_routed_to_bridged:
+            outbound_l2_acl = acl_idx_fwd['L2']
+        else:
+            outbound_l2_acl = acl_idx_rev['L2']
+
+        if primary_is_routed_to_bridged:
+            inbound_l3_acl = acl_idx_fwd['L3']
+        else:
+            inbound_l3_acl = acl_idx_rev['L3']
+
+        if primary_is_bridged_to_routed:
+            outbound_l3_acl = acl_idx_fwd['L3']
+        else:
+            outbound_l3_acl = acl_idx_rev['L3']
+
+        acl_if_pg2 = VppAclInterface(self, sw_if_index=self.pg2.sw_if_index,
+                                     n_input=1,
+                                     acls=[inbound_l3_acl, outbound_l3_acl])
+        acl_if_pg2.add_vpp_config()
+
+        acl_if_pg0 = VppAclInterface(self, sw_if_index=self.pg0.sw_if_index,
+                                     n_input=1,
+                                     acls=[inbound_l2_acl, outbound_l2_acl])
+        acl_if_pg0.add_vpp_config()
+
+        acl_if_pg1 = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+                                     n_input=1,
+                                     acls=[inbound_l2_acl, outbound_l2_acl])
+        acl_if_pg1.add_vpp_config()
+
+        self.applied_acl_shuffle(acl_if_pg0)
+        self.applied_acl_shuffle(acl_if_pg2)
+
+    def apply_acl_ip46_routed_to_bridged(self, test_l2_deny, is_ip6,
+                                         is_reflect, add_eh):
+        return self.apply_acl_ip46_x_to_y(False, test_l2_deny, is_ip6,
+                                          is_reflect, add_eh)
+
+    def apply_acl_ip46_bridged_to_routed(self, test_l2_deny, is_ip6,
+                                         is_reflect, add_eh):
+        return self.apply_acl_ip46_x_to_y(True, test_l2_deny, is_ip6,
+                                          is_reflect, add_eh)
+
+    def verify_acl_packet_count(self, acl_idx, packet_count):
+        matches = self.statistics.get_counter('/acl/%d/matches' % acl_idx)
+        self.logger.info("stat seg for ACL %d: %s" % (acl_idx, repr(matches)))
+        total_count = 0
+        for m in matches:
+            for p in m:
+                total_count = total_count + p['packets']
+        self.assertEqual(total_count, packet_count)
+
+    def run_traffic_ip46_x_to_y(self, bridged_to_routed,
+                                test_l2_deny, is_ip6,
+                                is_reflect, is_established, add_eh,
+                                stateful_icmp=False):
+        self.reset_packet_infos()
+        stream_dict = self.create_stream(self.pg2, self.loop0,
+                                         bridged_to_routed,
+                                         self.pg_if_packet_sizes, is_ip6,
+                                         not is_reflect, is_established,
+                                         add_eh, stateful_icmp)
+        stream = stream_dict['stream']
+
+        tx_if = self.pg0 if bridged_to_routed else self.pg2
+        rx_if = self.pg2 if bridged_to_routed else self.pg0
+
+        tx_if.add_stream(stream)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        packet_count = self.get_packet_count_for_if_idx(self.loop0.sw_if_index)
+        rcvd1 = rx_if.get_capture(packet_count)
+        self.verify_capture(self.loop0, self.pg2, rcvd1, bridged_to_routed)
+        return len(stream)
+
+    def run_traffic_ip46_routed_to_bridged(self, test_l2_deny, is_ip6,
+                                           is_reflect, is_established, add_eh,
+                                           stateful_icmp=False):
+        return self.run_traffic_ip46_x_to_y(False, test_l2_deny, is_ip6,
+                                            is_reflect, is_established, add_eh,
+                                            stateful_icmp)
+
+    def run_traffic_ip46_bridged_to_routed(self, test_l2_deny, is_ip6,
+                                           is_reflect, is_established, add_eh,
+                                           stateful_icmp=False):
+        return self.run_traffic_ip46_x_to_y(True, test_l2_deny, is_ip6,
+                                            is_reflect, is_established, add_eh,
+                                            stateful_icmp)
+
+    def run_test_ip46_routed_to_bridged(self, test_l2_deny,
+                                        is_ip6, is_reflect, add_eh):
+        acls = self.apply_acl_ip46_routed_to_bridged(test_l2_deny,
+                                                     is_ip6, is_reflect,
+                                                     add_eh)
+        pkts = self.run_traffic_ip46_routed_to_bridged(test_l2_deny, is_ip6,
+                                                       is_reflect, False,
+                                                       add_eh)
+        self.verify_acl_packet_count(acls['L3'].acl_index, pkts)
+
+    def run_test_ip46_bridged_to_routed(self, test_l2_deny,
+                                        is_ip6, is_reflect, add_eh):
+        acls = self.apply_acl_ip46_bridged_to_routed(test_l2_deny,
+                                                     is_ip6, is_reflect,
+                                                     add_eh)
+        pkts = self.run_traffic_ip46_bridged_to_routed(test_l2_deny, is_ip6,
+                                                       is_reflect, False,
+                                                       add_eh)
+        self.verify_acl_packet_count(acls['L2'].acl_index, pkts)
+
+    def run_test_ip46_routed_to_bridged_and_back(self, test_l2_action,
+                                                 is_ip6, add_eh,
+                                                 stateful_icmp=False):
+        self.apply_acl_ip46_both_directions_reflect(False, test_l2_action,
+                                                    is_ip6, add_eh,
+                                                    stateful_icmp)
+        self.run_traffic_ip46_routed_to_bridged(test_l2_action, is_ip6,
+                                                True, False, add_eh,
+                                                stateful_icmp)
+        self.run_traffic_ip46_bridged_to_routed(test_l2_action, is_ip6,
+                                                False, True, add_eh,
+                                                stateful_icmp)
+
+    def run_test_ip46_bridged_to_routed_and_back(self, test_l2_action,
+                                                 is_ip6, add_eh,
+                                                 stateful_icmp=False):
+        self.apply_acl_ip46_both_directions_reflect(True, test_l2_action,
+                                                    is_ip6, add_eh,
+                                                    stateful_icmp)
+        self.run_traffic_ip46_bridged_to_routed(test_l2_action, is_ip6,
+                                                True, False, add_eh,
+                                                stateful_icmp)
+        self.run_traffic_ip46_routed_to_bridged(test_l2_action, is_ip6,
+                                                False, True, add_eh,
+                                                stateful_icmp)
+
+    def test_0000_ip6_irb_1(self):
+        """ ACL plugin prepare"""
+        if not self.vpp_dead:
+            cmd = "set acl-plugin session timeout udp idle 2000"
+            self.logger.info(self.vapi.ppcli(cmd))
+            # uncomment to not skip past the routing header
+            # and watch the EH tests fail
+            # self.logger.info(self.vapi.ppcli(
+            #    "set acl-plugin skip-ipv6-extension-header 43 0"))
+            # uncomment to test the session limit (stateful tests will fail)
+            # self.logger.info(self.vapi.ppcli(
+            #    "set acl-plugin session table max-entries 1"))
+            # new datapath is the default, but just in case
+            # self.logger.info(self.vapi.ppcli(
+            #    "set acl-plugin l2-datapath new"))
+            # If you want to see some tests fail, uncomment the next line
+            # self.logger.info(self.vapi.ppcli(
+            #    "set acl-plugin l2-datapath old"))
+
+    def test_0001_ip6_irb_1(self):
+        """ ACL IPv6 routed -> bridged, L2 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(True, True, False,
+                                             self.WITHOUT_EH)
+
+    def test_0002_ip6_irb_1(self):
+        """ ACL IPv6 routed -> bridged, L3 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(False, True, False,
+                                             self.WITHOUT_EH)
+
+    def test_0003_ip4_irb_1(self):
+        """ ACL IPv4 routed -> bridged, L2 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(True, False, False,
+                                             self.WITHOUT_EH)
+
+    def test_0004_ip4_irb_1(self):
+        """ ACL IPv4 routed -> bridged, L3 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(False, False, False,
+                                             self.WITHOUT_EH)
+
+    def test_0005_ip6_irb_1(self):
+        """ ACL IPv6 bridged -> routed, L2 ACL deny """
+        self.run_test_ip46_bridged_to_routed(True, True, False,
+                                             self.WITHOUT_EH)
+
+    def test_0006_ip6_irb_1(self):
+        """ ACL IPv6 bridged -> routed, L3 ACL deny """
+        self.run_test_ip46_bridged_to_routed(False, True, False,
+                                             self.WITHOUT_EH)
+
+    def test_0007_ip6_irb_1(self):
+        """ ACL IPv4 bridged -> routed, L2 ACL deny """
+        self.run_test_ip46_bridged_to_routed(True, False, False,
+                                             self.WITHOUT_EH)
+
+    def test_0008_ip6_irb_1(self):
+        """ ACL IPv4 bridged -> routed, L3 ACL deny """
+        self.run_test_ip46_bridged_to_routed(False, False, False,
+                                             self.WITHOUT_EH)
+
+    # Stateful ACL tests
+    def test_0101_ip6_irb_1(self):
+        """ ACL IPv6 routed -> bridged, L2 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, True,
+                                                      self.WITHOUT_EH)
+
+    def test_0102_ip6_irb_1(self):
+        """ ACL IPv6 bridged -> routed, L2 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, True,
+                                                      self.WITHOUT_EH)
+
+    def test_0103_ip6_irb_1(self):
+        """ ACL IPv4 routed -> bridged, L2 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, False,
+                                                      self.WITHOUT_EH)
+
+    def test_0104_ip6_irb_1(self):
+        """ ACL IPv4 bridged -> routed, L2 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, False,
+                                                      self.WITHOUT_EH)
+
+    def test_0111_ip6_irb_1(self):
+        """ ACL IPv6 routed -> bridged, L3 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, True,
+                                                      self.WITHOUT_EH)
+
+    def test_0112_ip6_irb_1(self):
+        """ ACL IPv6 bridged -> routed, L3 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, True,
+                                                      self.WITHOUT_EH)
+
+    def test_0113_ip6_irb_1(self):
+        """ ACL IPv4 routed -> bridged, L3 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, False,
+                                                      self.WITHOUT_EH)
+
+    def test_0114_ip6_irb_1(self):
+        """ ACL IPv4 bridged -> routed, L3 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, False,
+                                                      self.WITHOUT_EH)
+
+    # A block of tests with extension headers
+
+    def test_1001_ip6_irb_1(self):
+        """ ACL IPv6+EH routed -> bridged, L2 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(True, True, False,
+                                             self.WITH_EH)
+
+    def test_1002_ip6_irb_1(self):
+        """ ACL IPv6+EH routed -> bridged, L3 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(False, True, False,
+                                             self.WITH_EH)
+
+    def test_1005_ip6_irb_1(self):
+        """ ACL IPv6+EH bridged -> routed, L2 ACL deny """
+        self.run_test_ip46_bridged_to_routed(True, True, False,
+                                             self.WITH_EH)
+
+    def test_1006_ip6_irb_1(self):
+        """ ACL IPv6+EH bridged -> routed, L3 ACL deny """
+        self.run_test_ip46_bridged_to_routed(False, True, False,
+                                             self.WITH_EH)
+
+    def test_1101_ip6_irb_1(self):
+        """ ACL IPv6+EH routed -> bridged, L2 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, True,
+                                                      self.WITH_EH)
+
+    def test_1102_ip6_irb_1(self):
+        """ ACL IPv6+EH bridged -> routed, L2 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, True,
+                                                      self.WITH_EH)
+
+    def test_1111_ip6_irb_1(self):
+        """ ACL IPv6+EH routed -> bridged, L3 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, True,
+                                                      self.WITH_EH)
+
+    def test_1112_ip6_irb_1(self):
+        """ ACL IPv6+EH bridged -> routed, L3 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, True,
+                                                      self.WITH_EH)
+
+    # IPv4 with "MF" bit set
+
+    def test_1201_ip6_irb_1(self):
+        """ ACL IPv4+MF routed -> bridged, L2 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(True, False, False,
+                                             self.WITH_EH)
+
+    def test_1202_ip6_irb_1(self):
+        """ ACL IPv4+MF routed -> bridged, L3 ACL deny"""
+        self.run_test_ip46_routed_to_bridged(False, False, False,
+                                             self.WITH_EH)
+
+    def test_1205_ip6_irb_1(self):
+        """ ACL IPv4+MF bridged -> routed, L2 ACL deny """
+        self.run_test_ip46_bridged_to_routed(True, False, False,
+                                             self.WITH_EH)
+
+    def test_1206_ip6_irb_1(self):
+        """ ACL IPv4+MF bridged -> routed, L3 ACL deny """
+        self.run_test_ip46_bridged_to_routed(False, False, False,
+                                             self.WITH_EH)
+
+    def test_1301_ip6_irb_1(self):
+        """ ACL IPv4+MF routed -> bridged, L2 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, False,
+                                                      self.WITH_EH)
+
+    def test_1302_ip6_irb_1(self):
+        """ ACL IPv4+MF bridged -> routed, L2 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, False,
+                                                      self.WITH_EH)
+
+    def test_1311_ip6_irb_1(self):
+        """ ACL IPv4+MF routed -> bridged, L3 ACL permit+reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, False,
+                                                      self.WITH_EH)
+
+    def test_1312_ip6_irb_1(self):
+        """ ACL IPv4+MF bridged -> routed, L3 ACL permit+reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, False,
+                                                      self.WITH_EH)
+    # Stateful ACL tests with stateful ICMP
+
+    def test_1401_ip6_irb_1(self):
+        """ IPv6 routed -> bridged, L2 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, True,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1402_ip6_irb_1(self):
+        """ IPv6 bridged -> routed, L2 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, True,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1403_ip4_irb_1(self):
+        """ IPv4 routed -> bridged, L2 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(True, False,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1404_ip4_irb_1(self):
+        """ IPv4 bridged -> routed, L2 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(True, False,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1411_ip6_irb_1(self):
+        """ IPv6 routed -> bridged, L3 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, True,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1412_ip6_irb_1(self):
+        """ IPv6 bridged -> routed, L3 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, True,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1413_ip4_irb_1(self):
+        """ IPv4 routed -> bridged, L3 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_routed_to_bridged_and_back(False, False,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+    def test_1414_ip4_irb_1(self):
+        """ IPv4 bridged -> routed, L3 ACL permit+reflect, ICMP reflect"""
+        self.run_test_ip46_bridged_to_routed_and_back(False, False,
+                                                      self.WITHOUT_EH,
+                                                      self.STATEFUL_ICMP)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_acl_plugin_macip.py b/test/test_acl_plugin_macip.py
new file mode 100644
index 0000000..5edd7b0
--- /dev/null
+++ b/test/test_acl_plugin_macip.py
@@ -0,0 +1,1278 @@
+#!/usr/bin/env python3
+from __future__ import print_function
+"""ACL plugin - MACIP tests
+"""
+import binascii
+import ipaddress
+import random
+from socket import inet_ntop, inet_pton, AF_INET, AF_INET6
+from struct import pack, unpack
+import re
+import unittest
+from ipaddress import ip_network, IPv4Network, IPv6Network
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from vpp_lo_interface import VppLoInterface
+from vpp_l2 import L2_PORT_TYPE
+from vpp_sub_interface import L2_VTR_OP, VppSubInterface, VppDot1QSubint, \
+    VppDot1ADSubint
+from vpp_acl import AclRule, VppAcl, VppAclInterface, VppEtypeWhitelist, \
+    VppMacipAclInterface, VppMacipAcl, MacipRule
+from vpp_papi import MACAddress
+
+
+class MethodHolder(VppTestCase):
+    DEBUG = False
+
+    BRIDGED = True
+    ROUTED = False
+
+    IS_IP4 = False
+    IS_IP6 = True
+
+    DOT1AD = "dot1ad"
+    DOT1Q = "dot1q"
+    PERMIT_TAGS = True
+    DENY_TAGS = False
+
+    # rule types
+    DENY = 0
+    PERMIT = 1
+
+    # ACL types
+    EXACT_IP = 1
+    SUBNET_IP = 2
+    WILD_IP = 3
+
+    EXACT_MAC = 1
+    WILD_MAC = 2
+    OUI_MAC = 3
+
+    ACLS = []
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        Perform standard class setup (defined by class method setUpClass in
+        class VppTestCase) before running the test case, set test case related
+        variables and configure VPP.
+        """
+        super(MethodHolder, cls).setUpClass()
+
+        cls.pg_if_packet_sizes = [64, 512, 1518, 9018]  # packet sizes
+        cls.bd_id = 111
+        cls.remote_hosts_count = 200
+
+        try:
+            # create 4 pg interfaces, 1 loopback interface
+            cls.create_pg_interfaces(range(4))
+            cls.create_loopback_interfaces(1)
+
+            # create 2 subinterfaces
+            cls.subifs = [
+                VppDot1QSubint(cls, cls.pg1, 10),
+                VppDot1ADSubint(cls, cls.pg2, 20, 300, 400),
+                VppDot1QSubint(cls, cls.pg3, 30),
+                VppDot1ADSubint(cls, cls.pg3, 40, 600, 700)]
+
+            cls.subifs[0].set_vtr(L2_VTR_OP.L2_POP_1,
+                                  inner=10, push1q=1)
+            cls.subifs[1].set_vtr(L2_VTR_OP.L2_POP_2,
+                                  outer=300, inner=400, push1q=1)
+            cls.subifs[2].set_vtr(L2_VTR_OP.L2_POP_1,
+                                  inner=30, push1q=1)
+            cls.subifs[3].set_vtr(L2_VTR_OP.L2_POP_2,
+                                  outer=600, inner=700, push1q=1)
+
+            cls.interfaces = list(cls.pg_interfaces)
+            cls.interfaces.extend(cls.lo_interfaces)
+            cls.interfaces.extend(cls.subifs)
+
+            for i in cls.interfaces:
+                i.admin_up()
+
+            # Create BD with MAC learning enabled and put interfaces to this BD
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.loop0.sw_if_index, bd_id=cls.bd_id,
+                port_type=L2_PORT_TYPE.BVI)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg0.sw_if_index, bd_id=cls.bd_id)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.bd_id)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.subifs[0].sw_if_index, bd_id=cls.bd_id)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.subifs[1].sw_if_index, bd_id=cls.bd_id)
+
+            # Configure IPv4/6 addresses on loop interface and routed interface
+            cls.loop0.config_ip4()
+            cls.loop0.config_ip6()
+            cls.pg2.config_ip4()
+            cls.pg2.config_ip6()
+            cls.pg3.config_ip4()
+            cls.pg3.config_ip6()
+
+            # Configure MAC address binding to IPv4 neighbors on loop0
+            cls.loop0.generate_remote_hosts(cls.remote_hosts_count)
+            # Modify host mac addresses to have different OUI parts
+            for i in range(2, cls.remote_hosts_count + 2):
+                mac = cls.loop0.remote_hosts[i-2]._mac.split(':')
+                mac[2] = format(int(mac[2], 16) + i, "02x")
+                cls.loop0.remote_hosts[i - 2]._mac = ":".join(mac)
+
+            cls.loop0.configure_ipv4_neighbors()
+            cls.loop0.configure_ipv6_neighbors()
+
+            # configure MAC address on pg3
+            cls.pg3.resolve_arp()
+            cls.pg3.resolve_ndp()
+
+            # configure MAC address on subifs
+            for i in cls.subifs:
+                i.config_ip4()
+                i.resolve_arp()
+                i.config_ip6()
+
+            # configure MAC address on pg2
+            cls.pg2.resolve_arp()
+            cls.pg2.resolve_ndp()
+
+            # Loopback BVI interface has remote hosts
+            # one half of hosts are behind pg0 second behind pg1,pg2,pg3 subifs
+            cls.pg0.remote_hosts = cls.loop0.remote_hosts[:100]
+            cls.subifs[0].remote_hosts = cls.loop0.remote_hosts[100:125]
+            cls.subifs[1].remote_hosts = cls.loop0.remote_hosts[125:150]
+            cls.subifs[2].remote_hosts = cls.loop0.remote_hosts[150:175]
+            cls.subifs[3].remote_hosts = cls.loop0.remote_hosts[175:]
+
+        except Exception:
+            super(MethodHolder, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(MethodHolder, cls).tearDownClass()
+
+    def setUp(self):
+        super(MethodHolder, self).setUp()
+        self.reset_packet_infos()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.ppcli("show interface address"))
+        self.logger.info(self.vapi.ppcli("show hardware"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip acl"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip interface"))
+        self.logger.info(self.vapi.ppcli("sh classify tables verbose"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin acl"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin interface"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin tables"))
+        # print(self.vapi.ppcli("show interface address"))
+        # print(self.vapi.ppcli("show hardware"))
+        # print(self.vapi.ppcli("sh acl-plugin macip interface"))
+        # print(self.vapi.ppcli("sh acl-plugin macip acl"))
+
+    def macip_acl_dump_debug(self):
+        acls = self.vapi.macip_acl_dump()
+        if self.DEBUG:
+            for acl in acls:
+                # print("ACL #"+str(acl.acl_index))
+                for r in acl.r:
+                    rule = "ACTION"
+                    if r.is_permit == 1:
+                        rule = "PERMIT"
+                    elif r.is_permit == 0:
+                        rule = "DENY  "
+                    """
+                    print("    IP6" if r.is_ipv6 else "    IP4",
+                          rule,
+                          binascii.hexlify(r.src_mac),
+                          binascii.hexlify(r.src_mac_mask),
+                          unpack('<16B', r.src_ip_addr),
+                          r.src_ip_prefix_len)
+                    """
+        return acls
+
+    def create_rules(self, mac_type=EXACT_MAC, ip_type=EXACT_IP,
+                     acl_count=1, rules_count=None):
+        acls = []
+        if rules_count is None:
+            rules_count = [1]
+        src_mac = int("220000dead00", 16)
+        for acl in range(2, (acl_count+1) * 2):
+            rules = []
+            host = random.choice(self.loop0.remote_hosts)
+            is_ip6 = acl % 2
+            ip4 = host.ip4.split('.')
+            ip6 = list(unpack('<16B', inet_pton(AF_INET6, host.ip6)))
+
+            if ip_type == self.EXACT_IP:
+                prefix_len4 = 32
+                prefix_len6 = 128
+            elif ip_type == self.WILD_IP:
+                ip4 = [0, 0, 0, 0]
+                ip6 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+                prefix_len4 = 0
+                prefix_len6 = 0
+                rules_count[int((acl / 2) - 1)] = 1
+            else:
+                prefix_len4 = 24
+                prefix_len6 = 64
+
+            if mac_type == self.EXACT_MAC:
+                mask = "ff:ff:ff:ff:ff:ff"
+            elif mac_type == self.WILD_MAC:
+                mask = "00:00:00:00:00:00"
+            elif mac_type == self.OUI_MAC:
+                mask = "ff:ff:ff:00:00:00"
+            else:
+                mask = "ff:ff:ff:ff:ff:00"
+
+            ip = ip6 if is_ip6 else ip4
+            ip_len = prefix_len6 if is_ip6 else prefix_len4
+
+            for i in range(0, (rules_count[int((acl / 2) - 1)])):
+                src_mac += 16777217
+                if mac_type == self.WILD_MAC:
+                    mac = "00:00:00:00:00:00"
+                elif mac_type == self.OUI_MAC:
+                    mac = ':'.join(re.findall('..', '{:02x}'.format(
+                        src_mac))[:3])+":00:00:00"
+                else:
+                    mac = ':'.join(re.findall(
+                        '..', '{:02x}'.format(src_mac)))
+
+                if ip_type == self.EXACT_IP:
+                    ip4[3] = random.randint(100, 200)
+                    ip6[15] = random.randint(100, 200)
+                elif ip_type == self.SUBNET_IP:
+                    ip4[2] = random.randint(100, 200)
+                    ip4[3] = 0
+                    ip6[7] = random.randint(100, 200)
+                    ip6[15] = 0
+                ip_pack = b''
+                for j in range(0, len(ip)):
+                    ip_pack += pack('<B', int(ip[j]))
+
+                rule = MacipRule(is_permit=self.PERMIT,
+                                 src_prefix=ip_network((ip_pack, ip_len)),
+                                 src_mac=MACAddress(mac).packed,
+                                 src_mac_mask=MACAddress(mask).packed)
+                rules.append(rule)
+                if ip_type == self.WILD_IP:
+                    break
+
+            acls.append(rules)
+            src_mac += 1099511627776
+        return acls
+
+    def apply_macip_rules(self, acls):
+        macip_acls = []
+        for acl in acls:
+            macip_acl = VppMacipAcl(self, rules=acl)
+            macip_acl.add_vpp_config()
+            macip_acls.append(macip_acl)
+        return macip_acls
+
+    def verify_macip_acls(self, acl_count, rules_count, expected_count=2):
+        reply = self.macip_acl_dump_debug()
+        for acl in range(2, (acl_count+1) * 2):
+            self.assertEqual(reply[acl - 2].count, rules_count[acl//2-1])
+
+        self.vapi.macip_acl_interface_get()
+
+        self.vapi.macip_acl_interface_add_del(sw_if_index=0, acl_index=0)
+        self.vapi.macip_acl_interface_add_del(sw_if_index=1, acl_index=1)
+
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, expected_count)
+
+    def create_stream(self, mac_type, ip_type, packet_count,
+                      src_if, dst_if, traffic, is_ip6, tags=PERMIT_TAGS):
+        # exact MAC and exact IP
+        # exact MAC and subnet of IPs
+        # exact MAC and wildcard IP
+        # wildcard MAC and exact IP
+        # wildcard MAC and subnet of IPs
+        # wildcard MAC and wildcard IP
+        # OUI restricted MAC and exact IP
+        # OUI restricted MAC and subnet of IPs
+        # OUI restricted MAC and wildcard IP
+
+        packets = []
+        macip_rules = []
+        acl_rules = []
+        ip_permit = ""
+        mac_permit = ""
+        dst_mac = ""
+        mac_rule = "00:00:00:00:00:00"
+        mac_mask = "00:00:00:00:00:00"
+        for p in range(0, packet_count):
+            remote_dst_index = p % len(dst_if.remote_hosts)
+            remote_dst_host = dst_if.remote_hosts[remote_dst_index]
+
+            dst_port = 1234 + p
+            src_port = 4321 + p
+            is_permit = self.PERMIT if p % 3 == 0 else self.DENY
+            denyMAC = True if not is_permit and p % 3 == 1 else False
+            denyIP = True if not is_permit and p % 3 == 2 else False
+            if not is_permit and ip_type == self.WILD_IP:
+                denyMAC = True
+            if not is_permit and mac_type == self.WILD_MAC:
+                denyIP = True
+
+            if traffic == self.BRIDGED:
+                if is_permit:
+                    src_mac = remote_dst_host._mac
+                    dst_mac = 'de:ad:00:00:00:00'
+                    src_ip4 = remote_dst_host.ip4
+                    dst_ip4 = src_if.remote_ip4
+                    src_ip6 = remote_dst_host.ip6
+                    dst_ip6 = src_if.remote_ip6
+                    ip_permit = src_ip6 if is_ip6 else src_ip4
+                    mac_permit = src_mac
+                if denyMAC:
+                    mac = src_mac.split(':')
+                    mac[0] = format(int(mac[0], 16)+1, "02x")
+                    src_mac = ":".join(mac)
+                    if is_ip6:
+                        src_ip6 = ip_permit
+                    else:
+                        src_ip4 = ip_permit
+                if denyIP:
+                    if ip_type != self.WILD_IP:
+                        src_mac = mac_permit
+                    src_ip4 = remote_dst_host.ip4
+                    dst_ip4 = src_if.remote_ip4
+                    src_ip6 = remote_dst_host.ip6
+                    dst_ip6 = src_if.remote_ip6
+            else:
+                if is_permit:
+                    src_mac = remote_dst_host._mac
+                    dst_mac = src_if.local_mac
+                    src_ip4 = src_if.remote_ip4
+                    dst_ip4 = remote_dst_host.ip4
+                    src_ip6 = src_if.remote_ip6
+                    dst_ip6 = remote_dst_host.ip6
+                    ip_permit = src_ip6 if is_ip6 else src_ip4
+                    mac_permit = src_mac
+                if denyMAC:
+                    mac = src_mac.split(':')
+                    mac[0] = format(int(mac[0], 16) + 1, "02x")
+                    src_mac = ":".join(mac)
+                    if is_ip6:
+                        src_ip6 = ip_permit
+                    else:
+                        src_ip4 = ip_permit
+                if denyIP:
+                    src_mac = remote_dst_host._mac
+                    if ip_type != self.WILD_IP:
+                        src_mac = mac_permit
+                    src_ip4 = remote_dst_host.ip4
+                    dst_ip4 = src_if.remote_ip4
+                    src_ip6 = remote_dst_host.ip6
+                    dst_ip6 = src_if.remote_ip6
+
+            if is_permit:
+                info = self.create_packet_info(src_if, dst_if)
+                payload = self.info_to_payload(info)
+            else:
+                payload = "to be blocked"
+
+            if mac_type == self.WILD_MAC:
+                mac = src_mac.split(':')
+                for i in range(1, 5):
+                    mac[i] = format(random.randint(0, 255), "02x")
+                src_mac = ":".join(mac)
+
+            # create packet
+            packet = Ether(src=src_mac, dst=dst_mac)
+            ip_rule = src_ip6 if is_ip6 else src_ip4
+            if is_ip6:
+                if ip_type != self.EXACT_IP:
+                    sub_ip = list(unpack('<16B', inet_pton(AF_INET6, ip_rule)))
+                    if ip_type == self.WILD_IP:
+                        sub_ip[0] = random.randint(240, 254)
+                        sub_ip[1] = random.randint(230, 239)
+                        sub_ip[14] = random.randint(100, 199)
+                        sub_ip[15] = random.randint(200, 255)
+                    elif ip_type == self.SUBNET_IP:
+                        if denyIP:
+                            sub_ip[2] = int(sub_ip[2]) + 1
+                        sub_ip[14] = random.randint(100, 199)
+                        sub_ip[15] = random.randint(200, 255)
+                    packed_src_ip6 = b''.join(
+                        [scapy.compat.chb(x) for x in sub_ip])
+                    src_ip6 = inet_ntop(AF_INET6, packed_src_ip6)
+                packet /= IPv6(src=src_ip6, dst=dst_ip6)
+            else:
+                if ip_type != self.EXACT_IP:
+                    sub_ip = ip_rule.split('.')
+                    if ip_type == self.WILD_IP:
+                        sub_ip[0] = random.randint(1, 49)
+                        sub_ip[1] = random.randint(50, 99)
+                        sub_ip[2] = random.randint(100, 199)
+                        sub_ip[3] = random.randint(200, 255)
+                    elif ip_type == self.SUBNET_IP:
+                        if denyIP:
+                            sub_ip[1] = int(sub_ip[1])+1
+                        sub_ip[2] = random.randint(100, 199)
+                        sub_ip[3] = random.randint(200, 255)
+                    src_ip4 = '.'.join(['{!s}'.format(x) for x in sub_ip])
+                packet /= IP(src=src_ip4, dst=dst_ip4, frag=0, flags=0)
+
+            packet /= UDP(sport=src_port, dport=dst_port)/Raw(payload)
+
+            packet[Raw].load += b" mac:%s" % src_mac.encode('utf-8')
+
+            size = self.pg_if_packet_sizes[p % len(self.pg_if_packet_sizes)]
+            if isinstance(src_if, VppSubInterface):
+                size = size + 4
+            if isinstance(src_if, VppDot1QSubint):
+                if src_if is self.subifs[0]:
+                    if tags == self.PERMIT_TAGS:
+                        packet = src_if.add_dot1q_layer(packet, 10)
+                    else:
+                        packet = src_if.add_dot1q_layer(packet, 11)
+                else:
+                    if tags == self.PERMIT_TAGS:
+                        packet = src_if.add_dot1q_layer(packet, 30)
+                    else:
+                        packet = src_if.add_dot1q_layer(packet, 33)
+            elif isinstance(src_if, VppDot1ADSubint):
+                if src_if is self.subifs[1]:
+                    if tags == self.PERMIT_TAGS:
+                        packet = src_if.add_dot1ad_layer(packet, 300, 400)
+                    else:
+                        packet = src_if.add_dot1ad_layer(packet, 333, 444)
+                else:
+                    if tags == self.PERMIT_TAGS:
+                        packet = src_if.add_dot1ad_layer(packet, 600, 700)
+                    else:
+                        packet = src_if.add_dot1ad_layer(packet, 666, 777)
+            self.extend_packet(packet, size)
+            packets.append(packet)
+
+            # create suitable MACIP rule
+            if mac_type == self.EXACT_MAC:
+                mac_rule = src_mac
+                mac_mask = "ff:ff:ff:ff:ff:ff"
+            elif mac_type == self.WILD_MAC:
+                mac_rule = "00:00:00:00:00:00"
+                mac_mask = "00:00:00:00:00:00"
+            elif mac_type == self.OUI_MAC:
+                mac = src_mac.split(':')
+                mac[3] = mac[4] = mac[5] = '00'
+                mac_rule = ":".join(mac)
+                mac_mask = "ff:ff:ff:00:00:00"
+
+            if is_ip6:
+                if ip_type == self.WILD_IP:
+                    ip = "0::0"
+                else:
+                    ip = src_ip6
+                    if ip_type == self.SUBNET_IP:
+                        sub_ip = list(unpack('<16B', inet_pton(AF_INET6, ip)))
+                        for i in range(8, 16):
+                            sub_ip[i] = 0
+                        packed_ip = b''.join(
+                            [scapy.compat.chb(x) for x in sub_ip])
+                        ip = inet_ntop(AF_INET6, packed_ip)
+            else:
+                if ip_type == self.WILD_IP:
+                    ip = "0.0.0.0"
+                else:
+                    ip = src_ip4
+                    if ip_type == self.SUBNET_IP:
+                        sub_ip = ip.split('.')
+                        sub_ip[2] = sub_ip[3] = '0'
+                        ip = ".".join(sub_ip)
+
+            prefix_len = 128 if is_ip6 else 32
+            if ip_type == self.WILD_IP:
+                prefix_len = 0
+            elif ip_type == self.SUBNET_IP:
+                prefix_len = 64 if is_ip6 else 16
+            ip_rule = inet_pton(AF_INET6 if is_ip6 else AF_INET, ip)
+
+            # create suitable ACL rule
+            if is_permit:
+                rule_l4_sport = packet[UDP].sport
+                rule_l4_dport = packet[UDP].dport
+                rule_family = AF_INET6 if packet.haslayer(IPv6) else AF_INET
+                rule_prefix_len = 128 if packet.haslayer(IPv6) else 32
+                rule_l3_layer = IPv6 if packet.haslayer(IPv6) else IP
+                if packet.haslayer(IPv6):
+                    rule_l4_proto = packet[UDP].overload_fields[IPv6]['nh']
+                else:
+                    rule_l4_proto = packet[IP].proto
+
+                src_network = ip_network(
+                    (packet[rule_l3_layer].src, rule_prefix_len))
+                dst_network = ip_network(
+                    (packet[rule_l3_layer].dst, rule_prefix_len))
+                acl_rule = AclRule(is_permit=is_permit, proto=rule_l4_proto,
+                                   src_prefix=src_network,
+                                   dst_prefix=dst_network,
+                                   sport_from=rule_l4_sport,
+                                   sport_to=rule_l4_sport,
+                                   dport_from=rule_l4_dport,
+                                   dport_to=rule_l4_dport)
+                acl_rules.append(acl_rule)
+
+            if mac_type == self.WILD_MAC and ip_type == self.WILD_IP and p > 0:
+                continue
+
+            if is_permit:
+                macip_rule = MacipRule(
+                    is_permit=is_permit,
+                    src_prefix=ip_network(
+                        (ip_rule, prefix_len)),
+                    src_mac=MACAddress(mac_rule).packed,
+                    src_mac_mask=MACAddress(mac_mask).packed)
+                macip_rules.append(macip_rule)
+
+        # deny all other packets
+        if not (mac_type == self.WILD_MAC and ip_type == self.WILD_IP):
+            network = IPv6Network((0, 0)) if is_ip6 else IPv4Network((0, 0))
+            macip_rule = MacipRule(
+                is_permit=0,
+                src_prefix=network,
+                src_mac=MACAddress("00:00:00:00:00:00").packed,
+                src_mac_mask=MACAddress("00:00:00:00:00:00").packed)
+            macip_rules.append(macip_rule)
+
+        network = IPv6Network((0, 0)) if is_ip6 else IPv4Network((0, 0))
+        acl_rule = AclRule(is_permit=0, src_prefix=network, dst_prefix=network,
+                           sport_from=0, sport_to=0, dport_from=0, dport_to=0)
+        acl_rules.append(acl_rule)
+        return {'stream': packets,
+                'macip_rules': macip_rules,
+                'acl_rules': acl_rules}
+
+    def verify_capture(self, stream, capture, is_ip6):
+        """
+        :param stream:
+        :param capture:
+        :param is_ip6:
+        :return:
+        """
+        # p_l3 = IPv6 if is_ip6 else IP
+        # if self.DEBUG:
+        #     for p in stream:
+        #         print(p[Ether].src, p[Ether].dst, p[p_l3].src, p[p_l3].dst)
+        #
+        # acls = self.macip_acl_dump_debug()
+
+        # TODO : verify
+        # for acl in acls:
+        #     for r in acl.r:
+        #         print(binascii.hexlify(r.src_mac), \
+        #               binascii.hexlify(r.src_mac_mask),\
+        #               unpack('<16B', r.src_ip_addr), \
+        #               r.src_ip_prefix_len)
+        #
+        # for p in capture:
+        #     print(p[Ether].src, p[Ether].dst, p[p_l3].src, p[p_l3].dst
+        #     data = p[Raw].load.split(':',1)[1])
+        #     print(p[p_l3].src, data)
+
+    def run_traffic(self, mac_type, ip_type, traffic, is_ip6, packets,
+                    do_not_expected_capture=False, tags=None,
+                    apply_rules=True, isMACIP=True, permit_tags=PERMIT_TAGS,
+                    try_replace=False):
+        self.reset_packet_infos()
+
+        if tags is None:
+            tx_if = self.pg0 if traffic == self.BRIDGED else self.pg3
+            rx_if = self.pg3 if traffic == self.BRIDGED else self.pg0
+            src_if = self.pg3
+            dst_if = self.loop0
+        else:
+            if tags == self.DOT1Q:
+                if traffic == self.BRIDGED:
+                    tx_if = self.subifs[0]
+                    rx_if = self.pg0
+                    src_if = self.subifs[0]
+                    dst_if = self.loop0
+                else:
+                    tx_if = self.subifs[2]
+                    rx_if = self.pg0
+                    src_if = self.subifs[2]
+                    dst_if = self.loop0
+            elif tags == self.DOT1AD:
+                if traffic == self.BRIDGED:
+                    tx_if = self.subifs[1]
+                    rx_if = self.pg0
+                    src_if = self.subifs[1]
+                    dst_if = self.loop0
+                else:
+                    tx_if = self.subifs[3]
+                    rx_if = self.pg0
+                    src_if = self.subifs[3]
+                    dst_if = self.loop0
+            else:
+                return
+
+        test_dict = self.create_stream(mac_type, ip_type, packets,
+                                       src_if, dst_if,
+                                       traffic, is_ip6,
+                                       tags=permit_tags)
+
+        if apply_rules:
+            if isMACIP:
+                self.acl = VppMacipAcl(self, rules=test_dict['macip_rules'])
+            else:
+                self.acl = VppAcl(self, rules=test_dict['acl_rules'])
+            self.acl.add_vpp_config()
+
+            if isMACIP:
+                self.acl_if = VppMacipAclInterface(
+                    self, sw_if_index=tx_if.sw_if_index, acls=[self.acl])
+                self.acl_if.add_vpp_config()
+
+                dump = self.acl_if.dump()
+                self.assertTrue(dump)
+                self.assertEqual(dump[0].acls[0], self.acl.acl_index)
+            else:
+                self.acl_if = VppAclInterface(
+                    self, sw_if_index=tx_if.sw_if_index, n_input=1,
+                    acls=[self.acl])
+                self.acl_if.add_vpp_config()
+        else:
+            if hasattr(self, "acl_if"):
+                self.acl_if.remove_vpp_config()
+        if try_replace and hasattr(self, "acl"):
+            if isMACIP:
+                self.acl.modify_vpp_config(test_dict['macip_rules'])
+            else:
+                self.acl.modify_vpp_config(test_dict['acl_rules'])
+
+        if not isinstance(src_if, VppSubInterface):
+            tx_if.add_stream(test_dict['stream'])
+        else:
+            tx_if.parent.add_stream(test_dict['stream'])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        if do_not_expected_capture:
+            rx_if.get_capture(0)
+        else:
+            if traffic == self.BRIDGED and mac_type == self.WILD_MAC and \
+                    ip_type == self.WILD_IP:
+                capture = rx_if.get_capture(packets)
+            else:
+                capture = rx_if.get_capture(
+                    self.get_packet_count_for_if_idx(dst_if.sw_if_index))
+            self.verify_capture(test_dict['stream'], capture, is_ip6)
+        if not isMACIP:
+            if hasattr(self, "acl_if"):
+                self.acl_if.remove_vpp_config()
+            if hasattr(self, "acl"):
+                self.acl.remove_vpp_config()
+
+    def run_test_acls(self, mac_type, ip_type, acl_count,
+                      rules_count, traffic=None, ip=None):
+        self.apply_macip_rules(self.create_rules(mac_type, ip_type, acl_count,
+                                                 rules_count))
+        self.verify_macip_acls(acl_count, rules_count)
+
+        if traffic is not None:
+            self.run_traffic(self.EXACT_MAC, self.EXACT_IP, traffic, ip, 9)
+
+
+class TestMACIP_IP4(MethodHolder):
+    """MACIP with IP4 traffic"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMACIP_IP4, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMACIP_IP4, cls).tearDownClass()
+
+    def test_acl_bridged_ip4_exactMAC_exactIP(self):
+        """ IP4 MACIP exactMAC|exactIP ACL bridged traffic
+        """
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_exactMAC_subnetIP(self):
+        """ IP4 MACIP exactMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_exactMAC_wildIP(self):
+        """ IP4 MACIP exactMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_ouiMAC_exactIP(self):
+        """ IP4 MACIP ouiMAC|exactIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP4, 3)
+
+    def test_acl_bridged_ip4_ouiMAC_subnetIP(self):
+        """ IP4 MACIP ouiMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_ouiMAC_wildIP(self):
+        """ IP4 MACIP ouiMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_ac_bridgedl_ip4_wildMAC_exactIP(self):
+        """ IP4 MACIP wildcardMAC|exactIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_wildMAC_subnetIP(self):
+        """ IP4 MACIP wildcardMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_bridged_ip4_wildMAC_wildIP(self):
+        """ IP4 MACIP wildcardMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_exactMAC_exactIP(self):
+        """ IP4 MACIP exactMAC|exactIP ACL routed traffic
+        """
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_exactMAC_subnetIP(self):
+        """ IP4 MACIP exactMAC|subnetIP ACL routed traffic
+        """
+        self.run_traffic(self.EXACT_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_exactMAC_wildIP(self):
+        """ IP4 MACIP exactMAC|wildIP ACL routed traffic
+        """
+        self.run_traffic(self.EXACT_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_ouiMAC_exactIP(self):
+        """ IP4 MACIP ouiMAC|exactIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_ouiMAC_subnetIP(self):
+        """ IP4 MACIP ouiMAC|subnetIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_ouiMAC_wildIP(self):
+        """ IP4 MACIP ouiMAC|wildIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_wildMAC_exactIP(self):
+        """ IP4 MACIP wildcardMAC|exactIP ACL routed traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_wildMAC_subnetIP(self):
+        """ IP4 MACIP wildcardMAC|subnetIP ACL routed traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_routed_ip4_wildMAC_wildIP(self):
+        """ IP4 MACIP wildcardMAC|wildIP ACL
+        """
+
+        self.run_traffic(self.WILD_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP4, 9)
+
+    def test_acl_replace_traffic_ip4(self):
+        """ MACIP replace ACL with IP4 traffic
+        """
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP4, 9, try_replace=True)
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP4, 9, try_replace=True)
+
+
+class TestMACIP_IP6(MethodHolder):
+    """MACIP with IP6 traffic"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMACIP_IP6, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMACIP_IP6, cls).tearDownClass()
+
+    def test_acl_bridged_ip6_exactMAC_exactIP(self):
+        """ IP6 MACIP exactMAC|exactIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_exactMAC_subnetIP(self):
+        """ IP6 MACIP exactMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_exactMAC_wildIP(self):
+        """ IP6 MACIP exactMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_ouiMAC_exactIP(self):
+        """ IP6 MACIP oui_MAC|exactIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_ouiMAC_subnetIP(self):
+        """ IP6 MACIP ouiMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_ouiMAC_wildIP(self):
+        """ IP6 MACIP ouiMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_wildMAC_exactIP(self):
+        """ IP6 MACIP wildcardMAC|exactIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_wildMAC_subnetIP(self):
+        """ IP6 MACIP wildcardMAC|subnetIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_bridged_ip6_wildMAC_wildIP(self):
+        """ IP6 MACIP wildcardMAC|wildIP ACL bridged traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.WILD_IP,
+                         self.BRIDGED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_exactMAC_exactIP(self):
+        """ IP6 MACIP exactMAC|exactIP ACL routed traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_exactMAC_subnetIP(self):
+        """ IP6 MACIP exactMAC|subnetIP ACL routed traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_exactMAC_wildIP(self):
+        """ IP6 MACIP exactMAC|wildIP ACL routed traffic
+        """
+
+        self.run_traffic(self.EXACT_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_ouiMAC_exactIP(self):
+        """ IP6 MACIP ouiMAC|exactIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_ouiMAC_subnetIP(self):
+        """ IP6 MACIP ouiMAC|subnetIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_ouiMAC_wildIP(self):
+        """ IP6 MACIP ouiMAC|wildIP ACL routed traffic
+        """
+
+        self.run_traffic(self.OUI_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_wildMAC_exactIP(self):
+        """ IP6 MACIP wildcardMAC|exactIP ACL routed traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.EXACT_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_wildMAC_subnetIP(self):
+        """ IP6 MACIP wildcardMAC|subnetIP ACL routed traffic
+        """
+
+        self.run_traffic(self.WILD_MAC, self.SUBNET_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_routed_ip6_wildMAC_wildIP(self):
+        """ IP6 MACIP wildcardMAC|wildIP ACL
+        """
+
+        self.run_traffic(self.WILD_MAC, self.WILD_IP,
+                         self.ROUTED, self.IS_IP6, 9)
+
+    def test_acl_replace_traffic_ip6(self):
+        """ MACIP replace ACL with IP6 traffic
+        """
+        self.run_traffic(self.OUI_MAC, self.SUBNET_IP,
+                         self.BRIDGED, self.IS_IP6, 9, try_replace=True)
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP,
+                         self.BRIDGED, self.IS_IP6, 9, try_replace=True)
+
+
+class TestMACIP(MethodHolder):
+    """MACIP Tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMACIP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMACIP, cls).tearDownClass()
+
+    def test_acl_1_2(self):
+        """ MACIP ACL with 2 entries
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.WILD_IP, 1, [2])
+
+    def test_acl_1_5(self):
+        """ MACIP ACL with 5 entries
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.SUBNET_IP, 1, [5])
+
+    def test_acl_1_10(self):
+        """ MACIP ACL with 10 entries
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.EXACT_IP, 1, [10])
+
+    def test_acl_1_20(self):
+        """ MACIP ACL with 20 entries
+        """
+
+        self.run_test_acls(self.OUI_MAC, self.WILD_IP, 1, [20])
+
+    def test_acl_1_50(self):
+        """ MACIP ACL with 50 entries
+        """
+
+        self.run_test_acls(self.OUI_MAC, self.SUBNET_IP, 1, [50])
+
+    def test_acl_1_100(self):
+        """ MACIP ACL with 100 entries
+        """
+
+        self.run_test_acls(self.OUI_MAC, self.EXACT_IP, 1, [100])
+
+    def test_acl_2_X(self):
+        """ MACIP 2 ACLs each with 100+ entries
+        """
+
+        self.run_test_acls(self.OUI_MAC, self.SUBNET_IP, 2, [100, 200])
+
+    def test_acl_10_X(self):
+        """ MACIP 10 ACLs each with 100+ entries
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.EXACT_IP, 10,
+                           [100, 120, 140, 160, 180, 200, 210, 220, 230, 240])
+
+    def test_acl_10_X_traffic_ip4(self):
+        """ MACIP 10 ACLs each with 100+ entries with IP4 traffic
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.EXACT_IP, 10,
+                           [100, 120, 140, 160, 180, 200, 210, 220, 230, 240],
+                           self.BRIDGED, self.IS_IP4)
+
+    def test_acl_10_X_traffic_ip6(self):
+        """ MACIP 10 ACLs each with 100+ entries with IP6 traffic
+        """
+
+        self.run_test_acls(self.EXACT_MAC, self.EXACT_IP, 10,
+                           [100, 120, 140, 160, 180, 200, 210, 220, 230, 240],
+                           self.BRIDGED, self.IS_IP6)
+
+    def test_acl_replace(self):
+        """ MACIP replace ACL
+        """
+
+        r1 = self.create_rules(acl_count=3, rules_count=[2, 2, 2])
+        r2 = self.create_rules(mac_type=self.OUI_MAC, ip_type=self.SUBNET_IP)
+        macip_acls = self.apply_macip_rules(r1)
+
+        acls_before = self.macip_acl_dump_debug()
+
+        # replace acls #2, #3 with new
+        macip_acls[2].modify_vpp_config(r2[0])
+        macip_acls[3].modify_vpp_config(r2[1])
+
+        acls_after = self.macip_acl_dump_debug()
+
+        # verify changes
+        self.assertEqual(len(acls_before), len(acls_after))
+        for acl1, acl2 in zip(
+                acls_before[:2]+acls_before[4:],
+                acls_after[:2]+acls_after[4:]):
+            self.assertEqual(len(acl1), len(acl2))
+
+            self.assertEqual(len(acl1.r), len(acl2.r))
+            for r1, r2 in zip(acl1.r, acl2.r):
+                self.assertEqual(len(acl1.r), len(acl2.r))
+                self.assertEqual(acl1.r, acl2.r)
+        for acl1, acl2 in zip(
+                acls_before[2:4],
+                acls_after[2:4]):
+            self.assertEqual(len(acl1), len(acl2))
+
+            self.assertNotEqual(len(acl1.r), len(acl2.r))
+            for r1, r2 in zip(acl1.r, acl2.r):
+                self.assertNotEqual(len(acl1.r), len(acl2.r))
+                self.assertNotEqual(acl1.r, acl2.r)
+
+    def test_delete_intf(self):
+        """ MACIP ACL delete intf with acl
+        """
+
+        intf_count = len(self.interfaces)+1
+        intf = []
+        macip_alcs = self.apply_macip_rules(
+            self.create_rules(acl_count=3, rules_count=[3, 5, 4]))
+
+        intf.append(VppLoInterface(self))
+        intf.append(VppLoInterface(self))
+
+        sw_if_index0 = intf[0].sw_if_index
+        macip_acl_if0 = VppMacipAclInterface(
+            self, sw_if_index=sw_if_index0, acls=[macip_alcs[1]])
+        macip_acl_if0.add_vpp_config()
+
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, intf_count+1)
+        self.assertEqual(reply.acls[sw_if_index0], 1)
+
+        sw_if_index1 = intf[1].sw_if_index
+        macip_acl_if1 = VppMacipAclInterface(
+            self, sw_if_index=sw_if_index1, acls=[macip_alcs[0]])
+        macip_acl_if1.add_vpp_config()
+
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, intf_count+2)
+        self.assertEqual(reply.acls[sw_if_index1], 0)
+
+        intf[0].remove_vpp_config()
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, intf_count+2)
+        self.assertEqual(reply.acls[sw_if_index0], 4294967295)
+        self.assertEqual(reply.acls[sw_if_index1], 0)
+
+        intf.append(VppLoInterface(self))
+        intf.append(VppLoInterface(self))
+        sw_if_index2 = intf[2].sw_if_index
+        sw_if_index3 = intf[3].sw_if_index
+        macip_acl_if2 = VppMacipAclInterface(
+            self, sw_if_index=sw_if_index2, acls=[macip_alcs[1]])
+        macip_acl_if2.add_vpp_config()
+        macip_acl_if3 = VppMacipAclInterface(
+            self, sw_if_index=sw_if_index3, acls=[macip_alcs[1]])
+        macip_acl_if3.add_vpp_config()
+
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, intf_count+3)
+        self.assertEqual(reply.acls[sw_if_index1], 0)
+        self.assertEqual(reply.acls[sw_if_index2], 1)
+        self.assertEqual(reply.acls[sw_if_index3], 1)
+        self.logger.info("MACIP ACL on multiple interfaces:")
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip acl"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip acl index 1234"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip acl index 1"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip acl index 0"))
+        self.logger.info(self.vapi.ppcli("sh acl-plugin macip interface"))
+
+        intf[2].remove_vpp_config()
+        intf[1].remove_vpp_config()
+
+        reply = self.vapi.macip_acl_interface_get()
+        self.assertEqual(reply.count, intf_count+3)
+        self.assertEqual(reply.acls[sw_if_index0], 4294967295)
+        self.assertEqual(reply.acls[sw_if_index1], 4294967295)
+        self.assertEqual(reply.acls[sw_if_index2], 4294967295)
+        self.assertEqual(reply.acls[sw_if_index3], 1)
+
+        intf[3].remove_vpp_config()
+        reply = self.vapi.macip_acl_interface_get()
+
+        self.assertEqual(len([x for x in reply.acls if x != 4294967295]), 0)
+
+
+class TestACL_dot1q_bridged(MethodHolder):
+    """ACL on dot1q bridged subinterfaces Tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestACL_dot1q_bridged, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestACL_dot1q_bridged, cls).tearDownClass()
+
+    def test_acl_bridged_ip4_subif_dot1q(self):
+        """ IP4 ACL SubIf Dot1Q bridged traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.BRIDGED,
+                         self.IS_IP4, 9, tags=self.DOT1Q, isMACIP=False)
+
+    def test_acl_bridged_ip6_subif_dot1q(self):
+        """ IP6 ACL SubIf Dot1Q bridged traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.BRIDGED,
+                         self.IS_IP6, 9, tags=self.DOT1Q, isMACIP=False)
+
+
+class TestACL_dot1ad_bridged(MethodHolder):
+    """ACL on dot1ad bridged subinterfaces Tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestACL_dot1ad_bridged, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestACL_dot1ad_bridged, cls).tearDownClass()
+
+    def test_acl_bridged_ip4_subif_dot1ad(self):
+        """ IP4 ACL SubIf Dot1AD bridged traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.BRIDGED,
+                         self.IS_IP4, 9, tags=self.DOT1AD, isMACIP=False)
+
+    def test_acl_bridged_ip6_subif_dot1ad(self):
+        """ IP6 ACL SubIf Dot1AD bridged traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.BRIDGED,
+                         self.IS_IP6, 9, tags=self.DOT1AD, isMACIP=False)
+
+
+class TestACL_dot1q_routed(MethodHolder):
+    """ACL on dot1q routed subinterfaces Tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestACL_dot1q_routed, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestACL_dot1q_routed, cls).tearDownClass()
+
+    def test_acl_routed_ip4_subif_dot1q(self):
+        """ IP4 ACL SubIf Dot1Q routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP4, 9, tags=self.DOT1Q, isMACIP=False)
+
+    def test_acl_routed_ip6_subif_dot1q(self):
+        """ IP6 ACL SubIf Dot1Q routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP6, 9, tags=self.DOT1Q, isMACIP=False)
+
+    def test_acl_routed_ip4_subif_dot1q_deny_by_tags(self):
+        """ IP4 ACL SubIf wrong tags Dot1Q routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP4, 9, True, tags=self.DOT1Q, isMACIP=False,
+                         permit_tags=self.DENY_TAGS)
+
+    def test_acl_routed_ip6_subif_dot1q_deny_by_tags(self):
+        """ IP6 ACL SubIf wrong tags Dot1Q routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP6, 9, True, tags=self.DOT1Q, isMACIP=False,
+                         permit_tags=self.DENY_TAGS)
+
+
+class TestACL_dot1ad_routed(MethodHolder):
+    """ACL on dot1ad routed subinterfaces Tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestACL_dot1ad_routed, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestACL_dot1ad_routed, cls).tearDownClass()
+
+    def test_acl_routed_ip6_subif_dot1ad(self):
+        """ IP6 ACL SubIf Dot1AD routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP6, 9, tags=self.DOT1AD, isMACIP=False)
+
+    def test_acl_routed_ip4_subif_dot1ad(self):
+        """ IP4 ACL SubIf Dot1AD routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP4, 9, tags=self.DOT1AD, isMACIP=False)
+
+    def test_acl_routed_ip6_subif_dot1ad_deny_by_tags(self):
+        """ IP6 ACL SubIf wrong tags Dot1AD routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP6, 9, True, tags=self.DOT1AD, isMACIP=False,
+                         permit_tags=self.DENY_TAGS)
+
+    def test_acl_routed_ip4_subif_dot1ad_deny_by_tags(self):
+        """ IP4 ACL SubIf wrong tags Dot1AD routed traffic"""
+        self.run_traffic(self.EXACT_MAC, self.EXACT_IP, self.ROUTED,
+                         self.IS_IP4, 9, True, tags=self.DOT1AD, isMACIP=False,
+                         permit_tags=self.DENY_TAGS)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_adl.py b/test/test_adl.py
new file mode 100644
index 0000000..4a996fc
--- /dev/null
+++ b/test/test_adl.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_gcov_tests
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+
+
+class TestAdl(VppTestCase):
+    """ Allow/Deny Plugin Unit Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestAdl, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestAdl, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestAdl, self).setUp()
+
+    def tearDown(self):
+        super(TestAdl, self).tearDown()
+
+    def test_adl1_unittest(self):
+        """ Plugin API Test """
+        cmds = ["loop create\n",
+                "set int ip address loop0 192.168.1.1/24\n",
+                "set int ip6 table loop0 0\n",
+                "set int ip address loop0 2001:db01::1/64\n",
+                "set int state loop0 up\n",
+                "packet-generator new {\n"
+                " name ip4\n"
+                " limit 100\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP4: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 192.168.1.2-192.168.1.10 -> 192.168.2.1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 114\n"
+                "       }\n"
+                " }\n",
+                "packet-generator new {\n"
+                " name ip6-allow\n"
+                " limit 50\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP6: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 2001:db01::2 -> 2001:db01::1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 80\n"
+                "      }\n"
+                " }\n",
+                "packet-generator new {\n"
+                " name ip6-drop\n"
+                " limit 50\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP6: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 2001:db01::3 -> 2001:db01::1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 80\n"
+                "      }\n"
+                " }\n",
+                "ip table 1\n",
+                "ip route add 192.168.2.1/32 via drop\n",
+                "ip route add table 1 192.168.1.2/32 via local\n",
+                "ip6 table 1\n",
+                "ip route add 2001:db01::1/128 via drop\n",
+                "ip route add table 1 2001:db01::2/128 via local\n",
+                "bin adl_interface_enable_disable loop0\n",
+                "bin adl_allowlist_enable_disable loop0 fib-id 1 ip4 ip6\n",
+                "pa en\n"]
+
+        for cmd in cmds:
+            r = self.vapi.cli_return_response(cmd)
+            if r.retval != 0:
+                if hasattr(r, 'reply'):
+                    self.logger.info(cmd + " FAIL reply " + r.reply)
+                else:
+                    self.logger.info(cmd + " FAIL retval " + str(r.retval))
+
+        total_pkts = self.statistics.get_err_counter(
+            "/err/adl-input/Allow/Deny packets processed")
+
+        self.assertEqual(total_pkts, 200)
+
+        ip4_allow = self.statistics.get_err_counter(
+            "/err/ip4-adl-allowlist/ip4 allowlist allowed")
+        self.assertEqual(ip4_allow, 12)
+        ip6_allow = self.statistics.get_err_counter(
+            "/err/ip6-adl-allowlist/ip6 allowlist allowed")
+        self.assertEqual(ip6_allow, 50)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_arping.py b/test/test_arping.py
new file mode 100644
index 0000000..bd8b625
--- /dev/null
+++ b/test/test_arping.py
@@ -0,0 +1,251 @@
+from scapy.layers.l2 import ARP
+from scapy.layers.inet6 import ICMPv6ND_NS, ICMPv6ND_NA, IPv6
+
+from framework import VppTestCase
+
+""" TestArping is a subclass of  VPPTestCase classes.
+
+Basic test for sanity check of arping.
+
+"""
+
+
+class TestArping(VppTestCase):
+    """ Arping Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestArping, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.interfaces = list(cls.pg_interfaces)
+
+            for i in cls.interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.config_ip6()
+                i.disable_ipv6_ra()
+                i.resolve_arp()
+                i.resolve_ndp()
+        except Exception:
+            super(TestArping, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestArping, cls).tearDownClass()
+
+    def tearDown(self):
+        super(TestArping, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show hardware"))
+
+    def verify_arping_request(self, p, src, dst):
+        arp = p[ARP]
+        self.assertEqual(arp.hwtype, 0x0001)
+        self.assertEqual(arp.ptype, 0x0800)
+        self.assertEqual(arp.hwlen, 6)
+        self.assertEqual(arp.op, 1)
+        self.assertEqual(arp.psrc, src)
+        self.assertEqual(arp.pdst, dst)
+
+    def verify_arping_ip6_ns(self, p, src, dst):
+        icmpv6 = p[ICMPv6ND_NS]
+        self.assertEqual(icmpv6.type, 135)
+        self.assertEqual(icmpv6.tgt, dst)
+        ipv6 = p[IPv6]
+        self.assertEqual(src, ipv6.src)
+
+    def verify_arping_ip6_na(self, p, src, dst):
+        icmpv6 = p[ICMPv6ND_NA]
+        self.assertEqual(icmpv6.type, 136)
+        self.assertEqual(icmpv6.tgt, dst)
+        ipv6 = p[IPv6]
+        self.assertEqual(src, ipv6.src)
+
+    def test_arping_ip4_arp_request_cli(self):
+        """ arping IP4 arp request CLI test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            remote_ip4 = self.pg1.remote_ip4
+
+            ping_cmd = "arping " + remote_ip4 + "pg1 repeat 5 interval 0.1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            ping_cmd = "arping " + remote_ip4 + "pg1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_request(p, self.pg1.local_ip4,
+                                           self.pg1.remote_ip4)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip4_garp_cli(self):
+        """ arping ip4 gratuitous arp CLI test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            ping_cmd = ("arping gratuitous" + self.pg1.local_ip4 +
+                        "pg1 repeat 5 interval 0.1")
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            ping_cmd = "arping gratuitous" + self.pg1.local_ip4 + "pg1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_request(p, self.pg1.local_ip4,
+                                           self.pg1.local_ip4)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip4_arp_request_api(self):
+        """ arping ip4 arp request API test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            remote_ip4 = self.pg1.remote_ip4
+
+            ret = self.vapi.arping(address=remote_ip4,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=0, repeat=5, interval=0.1)
+            self.logger.info(ret)
+
+            ret = self.vapi.arping(address=remote_ip4,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=0)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_request(p, self.pg1.local_ip4,
+                                           self.pg1.remote_ip4)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip4_garp_api(self):
+        """ arping ip4 gratuitous arp API test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            ret = self.vapi.arping(address=self.pg1.local_ip4,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=1, repeat=5, interval=0.1)
+            self.logger.info(ret)
+
+            ret = self.vapi.arping(address=self.pg1.local_ip4,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=1)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_request(p, self.pg1.local_ip4,
+                                           self.pg1.local_ip4)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip6_ns_cli(self):
+        """ arping IP6 neighbor solicitation CLI test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            remote_ip6 = self.pg1.remote_ip6
+
+            ping_cmd = "arping " + remote_ip6 + "pg1 repeat 5 interval 0.1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            ping_cmd = "arping " + remote_ip6 + "pg1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_ip6_ns(p, self.pg1.local_ip6,
+                                          self.pg1.remote_ip6)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip6_ns_api(self):
+        """ arping ip6 neighbor solicitation API test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            remote_ip6 = self.pg1.remote_ip6
+
+            ret = self.vapi.arping(address=remote_ip6,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=0, repeat=5, interval=0.1)
+            self.logger.info(ret)
+
+            ret = self.vapi.arping(address=remote_ip6,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=0)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_ip6_ns(p, self.pg1.local_ip6,
+                                          self.pg1.remote_ip6)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip6_na_cli(self):
+        """ arping ip6 neighbor advertisement CLI test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            ping_cmd = ("arping gratuitous" + self.pg1.local_ip6 +
+                        "pg1 repeat 5 interval 0.1")
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            ping_cmd = "arping gratuitous" + self.pg1.local_ip6 + "pg1"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_ip6_na(p, self.pg1.local_ip6,
+                                          self.pg1.local_ip6)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_arping_ip6_na_api(self):
+        """ arping ip6 neighbor advertisement API test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            ret = self.vapi.arping(address=self.pg1.local_ip6,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=1, repeat=5, interval=0.1)
+            self.logger.info(ret)
+
+            ret = self.vapi.arping(address=self.pg1.local_ip6,
+                                   sw_if_index=self.pg1.sw_if_index,
+                                   is_garp=1)
+            self.logger.info(ret)
+
+            out = self.pg1.get_capture(6)
+            for p in out:
+                self.verify_arping_ip6_na(p, self.pg1.local_ip6,
+                                          self.pg1.local_ip6)
+        finally:
+            self.vapi.cli("show error")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_bfd.py b/test/test_bfd.py
new file mode 100644
index 0000000..01b468c
--- /dev/null
+++ b/test/test_bfd.py
@@ -0,0 +1,2763 @@
+#!/usr/bin/env python3
+""" BFD tests """
+
+from __future__ import division
+
+import binascii
+import hashlib
+import ipaddress
+import reprlib
+import time
+import unittest
+from random import randint, shuffle, getrandbits
+from socket import AF_INET, AF_INET6, inet_ntop
+from struct import pack, unpack
+
+import scapy.compat
+from scapy.layers.inet import UDP, IP
+from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+
+from bfd import VppBFDAuthKey, BFD, BFDAuthType, VppBFDUDPSession, \
+    BFDDiagCode, BFDState, BFD_vpp_echo
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import tag_run_solo
+from util import ppp
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_lo_interface import VppLoInterface
+from vpp_papi_provider import UnexpectedApiReturnValueError, \
+    CliFailedCommandError
+from vpp_pg_interface import CaptureTimeoutError, is_ipv6_misc
+from vpp_gre_interface import VppGreInterface
+from vpp_papi import VppEnum
+
+USEC_IN_SEC = 1000000
+
+
+class AuthKeyFactory(object):
+    """Factory class for creating auth keys with unique conf key ID"""
+
+    def __init__(self):
+        self._conf_key_ids = {}
+
+    def create_random_key(self, test, auth_type=BFDAuthType.keyed_sha1):
+        """ create a random key with unique conf key id """
+        conf_key_id = randint(0, 0xFFFFFFFF)
+        while conf_key_id in self._conf_key_ids:
+            conf_key_id = randint(0, 0xFFFFFFFF)
+        self._conf_key_ids[conf_key_id] = 1
+        key = scapy.compat.raw(
+            bytearray([randint(0, 255) for _ in range(randint(1, 20))]))
+        return VppBFDAuthKey(test=test, auth_type=auth_type,
+                             conf_key_id=conf_key_id, key=key)
+
+
+class BFDAPITestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD) - API"""
+
+    pg0 = None
+    pg1 = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDAPITestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces(range(2))
+            for i in cls.pg_interfaces:
+                i.config_ip4()
+                i.config_ip6()
+                i.resolve_arp()
+
+        except Exception:
+            super(BFDAPITestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDAPITestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDAPITestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+
+    def test_add_bfd(self):
+        """ create a BFD session """
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+
+    def test_double_add(self):
+        """ create the same BFD session twice (negative case) """
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        session.add_vpp_config()
+
+        with self.vapi.assert_negative_api_retval():
+            session.add_vpp_config()
+
+        session.remove_vpp_config()
+
+    def test_add_bfd6(self):
+        """ create IPv6 BFD session """
+        session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip6, af=AF_INET6)
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+
+    def test_mod_bfd(self):
+        """ modify BFD session parameters """
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                   desired_min_tx=50000,
+                                   required_min_rx=10000,
+                                   detect_mult=1)
+        session.add_vpp_config()
+        s = session.get_bfd_udp_session_dump_entry()
+        self.assert_equal(session.desired_min_tx,
+                          s.desired_min_tx,
+                          "desired min transmit interval")
+        self.assert_equal(session.required_min_rx,
+                          s.required_min_rx,
+                          "required min receive interval")
+        self.assert_equal(session.detect_mult, s.detect_mult, "detect mult")
+        session.modify_parameters(desired_min_tx=session.desired_min_tx * 2,
+                                  required_min_rx=session.required_min_rx * 2,
+                                  detect_mult=session.detect_mult * 2)
+        s = session.get_bfd_udp_session_dump_entry()
+        self.assert_equal(session.desired_min_tx,
+                          s.desired_min_tx,
+                          "desired min transmit interval")
+        self.assert_equal(session.required_min_rx,
+                          s.required_min_rx,
+                          "required min receive interval")
+        self.assert_equal(session.detect_mult, s.detect_mult, "detect mult")
+
+    def test_add_sha1_keys(self):
+        """ add SHA1 keys """
+        key_count = 10
+        keys = [self.factory.create_random_key(
+            self) for i in range(0, key_count)]
+        for key in keys:
+            self.assertFalse(key.query_vpp_config())
+        for key in keys:
+            key.add_vpp_config()
+        for key in keys:
+            self.assertTrue(key.query_vpp_config())
+        # remove randomly
+        indexes = list(range(key_count))
+        shuffle(indexes)
+        removed = []
+        for i in indexes:
+            key = keys[i]
+            key.remove_vpp_config()
+            removed.append(i)
+            for j in range(key_count):
+                key = keys[j]
+                if j in removed:
+                    self.assertFalse(key.query_vpp_config())
+                else:
+                    self.assertTrue(key.query_vpp_config())
+        # should be removed now
+        for key in keys:
+            self.assertFalse(key.query_vpp_config())
+        # add back and remove again
+        for key in keys:
+            key.add_vpp_config()
+        for key in keys:
+            self.assertTrue(key.query_vpp_config())
+        for key in keys:
+            key.remove_vpp_config()
+        for key in keys:
+            self.assertFalse(key.query_vpp_config())
+
+    def test_add_bfd_sha1(self):
+        """ create a BFD session (SHA1) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                   sha1_key=key)
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+        session.add_vpp_config()
+        self.logger.debug("Session state is %s", session.state)
+        session.remove_vpp_config()
+
+    def test_double_add_sha1(self):
+        """ create the same BFD session twice (negative case) (SHA1) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                   sha1_key=key)
+        session.add_vpp_config()
+        with self.assertRaises(Exception):
+            session.add_vpp_config()
+
+    def test_add_auth_nonexistent_key(self):
+        """ create BFD session using non-existent SHA1 (negative case) """
+        session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4,
+            sha1_key=self.factory.create_random_key(self))
+        with self.assertRaises(Exception):
+            session.add_vpp_config()
+
+    def test_shared_sha1_key(self):
+        """ share single SHA1 key between multiple BFD sessions """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        sessions = [
+            VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                             sha1_key=key),
+            VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6,
+                             sha1_key=key, af=AF_INET6),
+            VppBFDUDPSession(self, self.pg1, self.pg1.remote_ip4,
+                             sha1_key=key),
+            VppBFDUDPSession(self, self.pg1, self.pg1.remote_ip6,
+                             sha1_key=key, af=AF_INET6)]
+        for s in sessions:
+            s.add_vpp_config()
+        removed = 0
+        for s in sessions:
+            e = key.get_bfd_auth_keys_dump_entry()
+            self.assert_equal(e.use_count, len(sessions) - removed,
+                              "Use count for shared key")
+            s.remove_vpp_config()
+            removed += 1
+        e = key.get_bfd_auth_keys_dump_entry()
+        self.assert_equal(e.use_count, len(sessions) - removed,
+                          "Use count for shared key")
+
+    def test_activate_auth(self):
+        """ activate SHA1 authentication """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        session.add_vpp_config()
+        session.activate_auth(key)
+
+    def test_deactivate_auth(self):
+        """ deactivate SHA1 authentication """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        session.add_vpp_config()
+        session.activate_auth(key)
+        session.deactivate_auth()
+
+    def test_change_key(self):
+        """ change SHA1 key """
+        key1 = self.factory.create_random_key(self)
+        key2 = self.factory.create_random_key(self)
+        while key2.conf_key_id == key1.conf_key_id:
+            key2 = self.factory.create_random_key(self)
+        key1.add_vpp_config()
+        key2.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                   sha1_key=key1)
+        session.add_vpp_config()
+        session.activate_auth(key2)
+
+    def test_set_del_udp_echo_source(self):
+        """ set/del udp echo source """
+        self.create_loopback_interfaces(1)
+        self.loopback0 = self.lo_interfaces[0]
+        self.loopback0.admin_up()
+        echo_source = self.vapi.bfd_udp_get_echo_source()
+        self.assertFalse(echo_source.is_set)
+        self.assertFalse(echo_source.have_usable_ip4)
+        self.assertFalse(echo_source.have_usable_ip6)
+
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        echo_source = self.vapi.bfd_udp_get_echo_source()
+        self.assertTrue(echo_source.is_set)
+        self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+        self.assertFalse(echo_source.have_usable_ip4)
+        self.assertFalse(echo_source.have_usable_ip6)
+
+        self.loopback0.config_ip4()
+        echo_ip4 = ipaddress.IPv4Address(int(ipaddress.IPv4Address(
+            self.loopback0.local_ip4)) ^ 1).packed
+        echo_source = self.vapi.bfd_udp_get_echo_source()
+        self.assertTrue(echo_source.is_set)
+        self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+        self.assertTrue(echo_source.have_usable_ip4)
+        self.assertEqual(echo_source.ip4_addr.packed, echo_ip4)
+        self.assertFalse(echo_source.have_usable_ip6)
+
+        self.loopback0.config_ip6()
+        echo_ip6 = ipaddress.IPv6Address(int(ipaddress.IPv6Address(
+            self.loopback0.local_ip6)) ^ 1).packed
+
+        echo_source = self.vapi.bfd_udp_get_echo_source()
+        self.assertTrue(echo_source.is_set)
+        self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+        self.assertTrue(echo_source.have_usable_ip4)
+        self.assertEqual(echo_source.ip4_addr.packed, echo_ip4)
+        self.assertTrue(echo_source.have_usable_ip6)
+        self.assertEqual(echo_source.ip6_addr.packed, echo_ip6)
+
+        self.vapi.bfd_udp_del_echo_source()
+        echo_source = self.vapi.bfd_udp_get_echo_source()
+        self.assertFalse(echo_source.is_set)
+        self.assertFalse(echo_source.have_usable_ip4)
+        self.assertFalse(echo_source.have_usable_ip6)
+
+
+class BFDTestSession(object):
+    """ BFD session as seen from test framework side """
+
+    def __init__(self, test, interface, af, detect_mult=3, sha1_key=None,
+                 bfd_key_id=None, our_seq_number=None,
+                 tunnel_header=None, phy_interface=None):
+        self.test = test
+        self.af = af
+        self.sha1_key = sha1_key
+        self.bfd_key_id = bfd_key_id
+        self.interface = interface
+        if phy_interface:
+            self.phy_interface = phy_interface
+        else:
+            self.phy_interface = self.interface
+        self.udp_sport = randint(49152, 65535)
+        if our_seq_number is None:
+            self.our_seq_number = randint(0, 40000000)
+        else:
+            self.our_seq_number = our_seq_number
+        self.vpp_seq_number = None
+        self.my_discriminator = 0
+        self.desired_min_tx = 300000
+        self.required_min_rx = 300000
+        self.required_min_echo_rx = None
+        self.detect_mult = detect_mult
+        self.diag = BFDDiagCode.no_diagnostic
+        self.your_discriminator = None
+        self.state = BFDState.down
+        self.auth_type = BFDAuthType.no_auth
+        self.tunnel_header = tunnel_header
+
+    def inc_seq_num(self):
+        """ increment sequence number, wrapping if needed """
+        if self.our_seq_number == 0xFFFFFFFF:
+            self.our_seq_number = 0
+        else:
+            self.our_seq_number += 1
+
+    def update(self, my_discriminator=None, your_discriminator=None,
+               desired_min_tx=None, required_min_rx=None,
+               required_min_echo_rx=None, detect_mult=None,
+               diag=None, state=None, auth_type=None):
+        """ update BFD parameters associated with session """
+        if my_discriminator is not None:
+            self.my_discriminator = my_discriminator
+        if your_discriminator is not None:
+            self.your_discriminator = your_discriminator
+        if required_min_rx is not None:
+            self.required_min_rx = required_min_rx
+        if required_min_echo_rx is not None:
+            self.required_min_echo_rx = required_min_echo_rx
+        if desired_min_tx is not None:
+            self.desired_min_tx = desired_min_tx
+        if detect_mult is not None:
+            self.detect_mult = detect_mult
+        if diag is not None:
+            self.diag = diag
+        if state is not None:
+            self.state = state
+        if auth_type is not None:
+            self.auth_type = auth_type
+
+    def fill_packet_fields(self, packet):
+        """ set packet fields with known values in packet """
+        bfd = packet[BFD]
+        if self.my_discriminator:
+            self.test.logger.debug("BFD: setting packet.my_discriminator=%s",
+                                   self.my_discriminator)
+            bfd.my_discriminator = self.my_discriminator
+        if self.your_discriminator:
+            self.test.logger.debug("BFD: setting packet.your_discriminator=%s",
+                                   self.your_discriminator)
+            bfd.your_discriminator = self.your_discriminator
+        if self.required_min_rx:
+            self.test.logger.debug(
+                "BFD: setting packet.required_min_rx_interval=%s",
+                self.required_min_rx)
+            bfd.required_min_rx_interval = self.required_min_rx
+        if self.required_min_echo_rx:
+            self.test.logger.debug(
+                "BFD: setting packet.required_min_echo_rx=%s",
+                self.required_min_echo_rx)
+            bfd.required_min_echo_rx_interval = self.required_min_echo_rx
+        if self.desired_min_tx:
+            self.test.logger.debug(
+                "BFD: setting packet.desired_min_tx_interval=%s",
+                self.desired_min_tx)
+            bfd.desired_min_tx_interval = self.desired_min_tx
+        if self.detect_mult:
+            self.test.logger.debug(
+                "BFD: setting packet.detect_mult=%s", self.detect_mult)
+            bfd.detect_mult = self.detect_mult
+        if self.diag:
+            self.test.logger.debug("BFD: setting packet.diag=%s", self.diag)
+            bfd.diag = self.diag
+        if self.state:
+            self.test.logger.debug("BFD: setting packet.state=%s", self.state)
+            bfd.state = self.state
+        if self.auth_type:
+            # this is used by a negative test-case
+            self.test.logger.debug("BFD: setting packet.auth_type=%s",
+                                   self.auth_type)
+            bfd.auth_type = self.auth_type
+
+    def create_packet(self):
+        """ create a BFD packet, reflecting the current state of session """
+        if self.sha1_key:
+            bfd = BFD(flags="A")
+            bfd.auth_type = self.sha1_key.auth_type
+            bfd.auth_len = BFD.sha1_auth_len
+            bfd.auth_key_id = self.bfd_key_id
+            bfd.auth_seq_num = self.our_seq_number
+            bfd.length = BFD.sha1_auth_len + BFD.bfd_pkt_len
+        else:
+            bfd = BFD()
+        packet = Ether(src=self.phy_interface.remote_mac,
+                       dst=self.phy_interface.local_mac)
+        if self.tunnel_header:
+            packet = packet / self.tunnel_header
+        if self.af == AF_INET6:
+            packet = (packet /
+                      IPv6(src=self.interface.remote_ip6,
+                           dst=self.interface.local_ip6,
+                           hlim=255) /
+                      UDP(sport=self.udp_sport, dport=BFD.udp_dport) /
+                      bfd)
+        else:
+            packet = (packet /
+                      IP(src=self.interface.remote_ip4,
+                         dst=self.interface.local_ip4,
+                         ttl=255) /
+                      UDP(sport=self.udp_sport, dport=BFD.udp_dport) /
+                      bfd)
+        self.test.logger.debug("BFD: Creating packet")
+        self.fill_packet_fields(packet)
+        if self.sha1_key:
+            hash_material = scapy.compat.raw(
+                packet[BFD])[:32] + self.sha1_key.key + \
+                b"\0" * (20 - len(self.sha1_key.key))
+            self.test.logger.debug("BFD: Calculated SHA1 hash: %s" %
+                                   hashlib.sha1(hash_material).hexdigest())
+            packet[BFD].auth_key_hash = hashlib.sha1(hash_material).digest()
+        return packet
+
+    def send_packet(self, packet=None, interface=None):
+        """ send packet on interface, creating the packet if needed """
+        if packet is None:
+            packet = self.create_packet()
+        if interface is None:
+            interface = self.phy_interface
+        self.test.logger.debug(ppp("Sending packet:", packet))
+        interface.add_stream(packet)
+        self.test.pg_start()
+
+    def verify_sha1_auth(self, packet):
+        """ Verify correctness of authentication in BFD layer. """
+        bfd = packet[BFD]
+        self.test.assert_equal(bfd.auth_len, 28, "Auth section length")
+        self.test.assert_equal(bfd.auth_type, self.sha1_key.auth_type,
+                               BFDAuthType)
+        self.test.assert_equal(bfd.auth_key_id, self.bfd_key_id, "Key ID")
+        self.test.assert_equal(bfd.auth_reserved, 0, "Reserved")
+        if self.vpp_seq_number is None:
+            self.vpp_seq_number = bfd.auth_seq_num
+            self.test.logger.debug("Received initial sequence number: %s" %
+                                   self.vpp_seq_number)
+        else:
+            recvd_seq_num = bfd.auth_seq_num
+            self.test.logger.debug("Received followup sequence number: %s" %
+                                   recvd_seq_num)
+            if self.vpp_seq_number < 0xffffffff:
+                if self.sha1_key.auth_type == \
+                        BFDAuthType.meticulous_keyed_sha1:
+                    self.test.assert_equal(recvd_seq_num,
+                                           self.vpp_seq_number + 1,
+                                           "BFD sequence number")
+                else:
+                    self.test.assert_in_range(recvd_seq_num,
+                                              self.vpp_seq_number,
+                                              self.vpp_seq_number + 1,
+                                              "BFD sequence number")
+            else:
+                if self.sha1_key.auth_type == \
+                        BFDAuthType.meticulous_keyed_sha1:
+                    self.test.assert_equal(recvd_seq_num, 0,
+                                           "BFD sequence number")
+                else:
+                    self.test.assertIn(recvd_seq_num, (self.vpp_seq_number, 0),
+                                       "BFD sequence number not one of "
+                                       "(%s, 0)" % self.vpp_seq_number)
+            self.vpp_seq_number = recvd_seq_num
+        # last 20 bytes represent the hash - so replace them with the key,
+        # pad the result with zeros and hash the result
+        hash_material = bfd.original[:-20] + self.sha1_key.key + \
+            b"\0" * (20 - len(self.sha1_key.key))
+        expected_hash = hashlib.sha1(hash_material).hexdigest()
+        self.test.assert_equal(binascii.hexlify(bfd.auth_key_hash),
+                               expected_hash.encode(), "Auth key hash")
+
+    def verify_bfd(self, packet):
+        """ Verify correctness of BFD layer. """
+        bfd = packet[BFD]
+        self.test.assert_equal(bfd.version, 1, "BFD version")
+        self.test.assert_equal(bfd.your_discriminator,
+                               self.my_discriminator,
+                               "BFD - your discriminator")
+        if self.sha1_key:
+            self.verify_sha1_auth(packet)
+
+
+def bfd_session_up(test):
+    """ Bring BFD session up """
+    test.logger.info("BFD: Waiting for slow hello")
+    p = wait_for_bfd_packet(test, 2, is_tunnel=test.vpp_session.is_tunnel)
+    old_offset = None
+    if hasattr(test, 'vpp_clock_offset'):
+        old_offset = test.vpp_clock_offset
+    test.vpp_clock_offset = time.time() - float(p.time)
+    test.logger.debug("BFD: Calculated vpp clock offset: %s",
+                      test.vpp_clock_offset)
+    if old_offset:
+        test.assertAlmostEqual(
+            old_offset, test.vpp_clock_offset, delta=0.5,
+            msg="vpp clock offset not stable (new: %s, old: %s)" %
+            (test.vpp_clock_offset, old_offset))
+    test.logger.info("BFD: Sending Init")
+    test.test_session.update(my_discriminator=randint(0, 40000000),
+                             your_discriminator=p[BFD].my_discriminator,
+                             state=BFDState.init)
+    if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \
+            BFDAuthType.meticulous_keyed_sha1:
+        test.test_session.inc_seq_num()
+    test.test_session.send_packet()
+    test.logger.info("BFD: Waiting for event")
+    e = test.vapi.wait_for_event(1, "bfd_udp_session_event")
+    verify_event(test, e, expected_state=BFDState.up)
+    test.logger.info("BFD: Session is Up")
+    test.test_session.update(state=BFDState.up)
+    if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \
+            BFDAuthType.meticulous_keyed_sha1:
+        test.test_session.inc_seq_num()
+    test.test_session.send_packet()
+    test.assert_equal(test.vpp_session.state, BFDState.up, BFDState)
+
+
+def bfd_session_down(test):
+    """ Bring BFD session down """
+    test.assert_equal(test.vpp_session.state, BFDState.up, BFDState)
+    test.test_session.update(state=BFDState.down)
+    if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \
+            BFDAuthType.meticulous_keyed_sha1:
+        test.test_session.inc_seq_num()
+    test.test_session.send_packet()
+    test.logger.info("BFD: Waiting for event")
+    e = test.vapi.wait_for_event(1, "bfd_udp_session_event")
+    verify_event(test, e, expected_state=BFDState.down)
+    test.logger.info("BFD: Session is Down")
+    test.assert_equal(test.vpp_session.state, BFDState.down, BFDState)
+
+
+def verify_bfd_session_config(test, session, state=None):
+    dump = session.get_bfd_udp_session_dump_entry()
+    test.assertIsNotNone(dump)
+    # since dump is not none, we have verified that sw_if_index and addresses
+    # are valid (in get_bfd_udp_session_dump_entry)
+    if state:
+        test.assert_equal(dump.state, state, "session state")
+    test.assert_equal(dump.required_min_rx, session.required_min_rx,
+                      "required min rx interval")
+    test.assert_equal(dump.desired_min_tx, session.desired_min_tx,
+                      "desired min tx interval")
+    test.assert_equal(dump.detect_mult, session.detect_mult,
+                      "detect multiplier")
+    if session.sha1_key is None:
+        test.assert_equal(dump.is_authenticated, 0, "is_authenticated flag")
+    else:
+        test.assert_equal(dump.is_authenticated, 1, "is_authenticated flag")
+        test.assert_equal(dump.bfd_key_id, session.bfd_key_id,
+                          "bfd key id")
+        test.assert_equal(dump.conf_key_id,
+                          session.sha1_key.conf_key_id,
+                          "config key id")
+
+
+def verify_ip(test, packet):
+    """ Verify correctness of IP layer. """
+    if test.vpp_session.af == AF_INET6:
+        ip = packet[IPv6]
+        local_ip = test.vpp_session.interface.local_ip6
+        remote_ip = test.vpp_session.interface.remote_ip6
+        test.assert_equal(ip.hlim, 255, "IPv6 hop limit")
+    else:
+        ip = packet[IP]
+        local_ip = test.vpp_session.interface.local_ip4
+        remote_ip = test.vpp_session.interface.remote_ip4
+        test.assert_equal(ip.ttl, 255, "IPv4 TTL")
+    test.assert_equal(ip.src, local_ip, "IP source address")
+    test.assert_equal(ip.dst, remote_ip, "IP destination address")
+
+
+def verify_udp(test, packet):
+    """ Verify correctness of UDP layer. """
+    udp = packet[UDP]
+    test.assert_equal(udp.dport, BFD.udp_dport, "UDP destination port")
+    test.assert_in_range(udp.sport, BFD.udp_sport_min, BFD.udp_sport_max,
+                         "UDP source port")
+
+
+def verify_event(test, event, expected_state):
+    """ Verify correctness of event values. """
+    e = event
+    test.logger.debug("BFD: Event: %s" % reprlib.repr(e))
+    test.assert_equal(e.sw_if_index,
+                      test.vpp_session.interface.sw_if_index,
+                      "BFD interface index")
+
+    test.assert_equal(str(e.local_addr), test.vpp_session.local_addr,
+                      "Local IPv6 address")
+    test.assert_equal(str(e.peer_addr), test.vpp_session.peer_addr,
+                      "Peer IPv6 address")
+    test.assert_equal(e.state, expected_state, BFDState)
+
+
+def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None, is_tunnel=False):
+    """ wait for BFD packet and verify its correctness
+
+    :param timeout: how long to wait
+    :param pcap_time_min: ignore packets with pcap timestamp lower than this
+
+    :returns: tuple (packet, time spent waiting for packet)
+    """
+    test.logger.info("BFD: Waiting for BFD packet")
+    deadline = time.time() + timeout
+    counter = 0
+    while True:
+        counter += 1
+        # sanity check
+        test.assert_in_range(counter, 0, 100, "number of packets ignored")
+        time_left = deadline - time.time()
+        if time_left < 0:
+            raise CaptureTimeoutError("Packet did not arrive within timeout")
+        p = test.pg0.wait_for_packet(timeout=time_left)
+        test.logger.debug(ppp("BFD: Got packet:", p))
+        if pcap_time_min is not None and p.time < pcap_time_min:
+            test.logger.debug(ppp("BFD: ignoring packet (pcap time %s < "
+                                  "pcap time min %s):" %
+                                  (p.time, pcap_time_min), p))
+        else:
+            break
+    if is_tunnel:
+        # strip an IP layer and move to the next
+        p = p[IP].payload
+
+    bfd = p[BFD]
+    if bfd is None:
+        raise Exception(ppp("Unexpected or invalid BFD packet:", p))
+    if bfd.payload:
+        raise Exception(ppp("Unexpected payload in BFD packet:", bfd))
+    verify_ip(test, p)
+    verify_udp(test, p)
+    test.test_session.verify_bfd(p)
+    return p
+
+
+@tag_run_solo
+class BFD4TestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD)"""
+
+    pg0 = None
+    vpp_clock_offset = None
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFD4TestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces([0])
+            cls.create_loopback_interfaces(1)
+            cls.loopback0 = cls.lo_interfaces[0]
+            cls.loopback0.config_ip4()
+            cls.loopback0.admin_up()
+            cls.pg0.config_ip4()
+            cls.pg0.configure_ipv4_neighbors()
+            cls.pg0.admin_up()
+            cls.pg0.resolve_arp()
+
+        except Exception:
+            super(BFD4TestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFD4TestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFD4TestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+        try:
+            self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                                self.pg0.remote_ip4)
+            self.vpp_session.add_vpp_config()
+            self.vpp_session.admin_up()
+            self.test_session = BFDTestSession(self, self.pg0, AF_INET)
+        except BaseException:
+            self.vapi.want_bfd_events(enable_disable=0)
+            raise
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=0)
+        self.vapi.collect_events()  # clear the event queue
+        super(BFD4TestCase, self).tearDown()
+
+    def test_session_up(self):
+        """ bring BFD session up """
+        bfd_session_up(self)
+
+    def test_session_up_by_ip(self):
+        """ bring BFD session up - first frame looked up by address pair """
+        self.logger.info("BFD: Sending Slow control frame")
+        self.test_session.update(my_discriminator=randint(0, 40000000))
+        self.test_session.send_packet()
+        self.pg0.enable_capture()
+        p = self.pg0.wait_for_packet(1)
+        self.assert_equal(p[BFD].your_discriminator,
+                          self.test_session.my_discriminator,
+                          "BFD - your discriminator")
+        self.assert_equal(p[BFD].state, BFDState.init, BFDState)
+        self.test_session.update(your_discriminator=p[BFD].my_discriminator,
+                                 state=BFDState.up)
+        self.logger.info("BFD: Waiting for event")
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.init)
+        self.logger.info("BFD: Sending Up")
+        self.test_session.send_packet()
+        self.logger.info("BFD: Waiting for event")
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.up)
+        self.logger.info("BFD: Session is Up")
+        self.test_session.update(state=BFDState.up)
+        self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_session_down(self):
+        """ bring BFD session down """
+        bfd_session_up(self)
+        bfd_session_down(self)
+
+    def test_hold_up(self):
+        """ hold BFD session up """
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            wait_for_bfd_packet(self)
+            self.test_session.send_packet()
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_slow_timer(self):
+        """ verify slow periodic control frames while session down """
+        packet_count = 3
+        self.logger.info("BFD: Waiting for %d BFD packets", packet_count)
+        prev_packet = wait_for_bfd_packet(self, 2)
+        for dummy in range(packet_count):
+            next_packet = wait_for_bfd_packet(self, 2)
+            time_diff = next_packet.time - prev_packet.time
+            # spec says the range should be <0.75, 1>, allow extra 0.05 margin
+            # to work around timing issues
+            self.assert_in_range(
+                time_diff, 0.70, 1.05, "time between slow packets")
+            prev_packet = next_packet
+
+    def test_zero_remote_min_rx(self):
+        """ no packets when zero remote required min rx interval """
+        bfd_session_up(self)
+        self.test_session.update(required_min_rx=0)
+        self.test_session.send_packet()
+        for dummy in range(self.test_session.detect_mult):
+            self.sleep(self.vpp_session.required_min_rx / USEC_IN_SEC,
+                       "sleep before transmitting bfd packet")
+            self.test_session.send_packet()
+            try:
+                p = wait_for_bfd_packet(self, timeout=0)
+                self.logger.error(ppp("Received unexpected packet:", p))
+            except CaptureTimeoutError:
+                pass
+        self.assert_equal(
+            len(self.vapi.collect_events()), 0, "number of bfd events")
+        self.test_session.update(required_min_rx=300000)
+        for dummy in range(3):
+            self.test_session.send_packet()
+            wait_for_bfd_packet(
+                self, timeout=self.test_session.required_min_rx / USEC_IN_SEC)
+        self.assert_equal(
+            len(self.vapi.collect_events()), 0, "number of bfd events")
+
+    def test_conn_down(self):
+        """ verify session goes down after inactivity """
+        bfd_session_up(self)
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        self.sleep(detection_time, "waiting for BFD session time-out")
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.down)
+
+    def test_peer_discr_reset_sess_down(self):
+        """ peer discriminator reset after session goes down """
+        bfd_session_up(self)
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        self.sleep(detection_time, "waiting for BFD session time-out")
+        self.test_session.my_discriminator = 0
+        wait_for_bfd_packet(self,
+                            pcap_time_min=time.time() - self.vpp_clock_offset)
+
+    def test_large_required_min_rx(self):
+        """ large remote required min rx interval """
+        bfd_session_up(self)
+        p = wait_for_bfd_packet(self)
+        interval = 3000000
+        self.test_session.update(required_min_rx=interval)
+        self.test_session.send_packet()
+        time_mark = time.time()
+        count = 0
+        # busy wait here, trying to collect a packet or event, vpp is not
+        # allowed to send packets and the session will timeout first - so the
+        # Up->Down event must arrive before any packets do
+        while time.time() < time_mark + interval / USEC_IN_SEC:
+            try:
+                p = wait_for_bfd_packet(self, timeout=0)
+                # if vpp managed to send a packet before we did the session
+                # session update, then that's fine, ignore it
+                if p.time < time_mark - self.vpp_clock_offset:
+                    continue
+                self.logger.error(ppp("Received unexpected packet:", p))
+                count += 1
+            except CaptureTimeoutError:
+                pass
+            events = self.vapi.collect_events()
+            if len(events) > 0:
+                verify_event(self, events[0], BFDState.down)
+                break
+        self.assert_equal(count, 0, "number of packets received")
+
+    def test_immediate_remote_min_rx_reduction(self):
+        """ immediately honor remote required min rx reduction """
+        self.vpp_session.remove_vpp_config()
+        self.vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, desired_min_tx=10000)
+        self.pg0.enable_capture()
+        self.vpp_session.add_vpp_config()
+        self.test_session.update(desired_min_tx=1000000,
+                                 required_min_rx=1000000)
+        bfd_session_up(self)
+        reference_packet = wait_for_bfd_packet(self)
+        time_mark = time.time()
+        interval = 300000
+        self.test_session.update(required_min_rx=interval)
+        self.test_session.send_packet()
+        extra_time = time.time() - time_mark
+        p = wait_for_bfd_packet(self)
+        # first packet is allowed to be late by time we spent doing the update
+        # calculated in extra_time
+        self.assert_in_range(p.time - reference_packet.time,
+                             .95 * 0.75 * interval / USEC_IN_SEC,
+                             1.05 * interval / USEC_IN_SEC + extra_time,
+                             "time between BFD packets")
+        reference_packet = p
+        for dummy in range(3):
+            p = wait_for_bfd_packet(self)
+            diff = p.time - reference_packet.time
+            self.assert_in_range(diff, .95 * .75 * interval / USEC_IN_SEC,
+                                 1.05 * interval / USEC_IN_SEC,
+                                 "time between BFD packets")
+            reference_packet = p
+
+    def test_modify_req_min_rx_double(self):
+        """ modify session - double required min rx """
+        bfd_session_up(self)
+        p = wait_for_bfd_packet(self)
+        self.test_session.update(desired_min_tx=10000,
+                                 required_min_rx=10000)
+        self.test_session.send_packet()
+        # double required min rx
+        self.vpp_session.modify_parameters(
+            required_min_rx=2 * self.vpp_session.required_min_rx)
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        # poll bit needs to be set
+        self.assertIn("P", p.sprintf("%BFD.flags%"),
+                      "Poll bit not set in BFD packet")
+        # finish poll sequence with final packet
+        final = self.test_session.create_packet()
+        final[BFD].flags = "F"
+        timeout = self.test_session.detect_mult * \
+            max(self.test_session.desired_min_tx,
+                self.vpp_session.required_min_rx) / USEC_IN_SEC
+        self.test_session.send_packet(final)
+        time_mark = time.time()
+        e = self.vapi.wait_for_event(2 * timeout, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.down)
+        time_to_event = time.time() - time_mark
+        self.assert_in_range(time_to_event, .9 * timeout,
+                             1.1 * timeout, "session timeout")
+
+    def test_modify_req_min_rx_halve(self):
+        """ modify session - halve required min rx """
+        self.vpp_session.modify_parameters(
+            required_min_rx=2 * self.vpp_session.required_min_rx)
+        bfd_session_up(self)
+        p = wait_for_bfd_packet(self)
+        self.test_session.update(desired_min_tx=10000,
+                                 required_min_rx=10000)
+        self.test_session.send_packet()
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        # halve required min rx
+        old_required_min_rx = self.vpp_session.required_min_rx
+        self.vpp_session.modify_parameters(
+            required_min_rx=self.vpp_session.required_min_rx // 2)
+        # now we wait 0.8*3*old-req-min-rx and the session should still be up
+        self.sleep(0.8 * self.vpp_session.detect_mult *
+                   old_required_min_rx / USEC_IN_SEC,
+                   "wait before finishing poll sequence")
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+        p = wait_for_bfd_packet(self)
+        # poll bit needs to be set
+        self.assertIn("P", p.sprintf("%BFD.flags%"),
+                      "Poll bit not set in BFD packet")
+        # finish poll sequence with final packet
+        final = self.test_session.create_packet()
+        final[BFD].flags = "F"
+        self.test_session.send_packet(final)
+        # now the session should time out under new conditions
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        before = time.time()
+        e = self.vapi.wait_for_event(
+            2 * detection_time, "bfd_udp_session_event")
+        after = time.time()
+        self.assert_in_range(after - before,
+                             0.9 * detection_time,
+                             1.1 * detection_time,
+                             "time before bfd session goes down")
+        verify_event(self, e, expected_state=BFDState.down)
+
+    def test_modify_detect_mult(self):
+        """ modify detect multiplier """
+        bfd_session_up(self)
+        p = wait_for_bfd_packet(self)
+        self.vpp_session.modify_parameters(detect_mult=1)
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(self.vpp_session.detect_mult,
+                          p[BFD].detect_mult,
+                          "detect mult")
+        # poll bit must not be set
+        self.assertNotIn("P", p.sprintf("%BFD.flags%"),
+                         "Poll bit not set in BFD packet")
+        self.vpp_session.modify_parameters(detect_mult=10)
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(self.vpp_session.detect_mult,
+                          p[BFD].detect_mult,
+                          "detect mult")
+        # poll bit must not be set
+        self.assertNotIn("P", p.sprintf("%BFD.flags%"),
+                         "Poll bit not set in BFD packet")
+
+    def test_queued_poll(self):
+        """ test poll sequence queueing """
+        bfd_session_up(self)
+        p = wait_for_bfd_packet(self)
+        self.vpp_session.modify_parameters(
+            required_min_rx=2 * self.vpp_session.required_min_rx)
+        p = wait_for_bfd_packet(self)
+        poll_sequence_start = time.time()
+        poll_sequence_length_min = 0.5
+        send_final_after = time.time() + poll_sequence_length_min
+        # poll bit needs to be set
+        self.assertIn("P", p.sprintf("%BFD.flags%"),
+                      "Poll bit not set in BFD packet")
+        self.assert_equal(p[BFD].required_min_rx_interval,
+                          self.vpp_session.required_min_rx,
+                          "BFD required min rx interval")
+        self.vpp_session.modify_parameters(
+            required_min_rx=2 * self.vpp_session.required_min_rx)
+        # 2nd poll sequence should be queued now
+        # don't send the reply back yet, wait for some time to emulate
+        # longer round-trip time
+        packet_count = 0
+        while time.time() < send_final_after:
+            self.test_session.send_packet()
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(len(self.vapi.collect_events()), 0,
+                              "number of bfd events")
+            self.assert_equal(p[BFD].required_min_rx_interval,
+                              self.vpp_session.required_min_rx,
+                              "BFD required min rx interval")
+            packet_count += 1
+            # poll bit must be set
+            self.assertIn("P", p.sprintf("%BFD.flags%"),
+                          "Poll bit not set in BFD packet")
+        final = self.test_session.create_packet()
+        final[BFD].flags = "F"
+        self.test_session.send_packet(final)
+        # finish 1st with final
+        poll_sequence_length = time.time() - poll_sequence_start
+        # vpp must wait for some time before starting new poll sequence
+        poll_no_2_started = False
+        for dummy in range(2 * packet_count):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(len(self.vapi.collect_events()), 0,
+                              "number of bfd events")
+            if "P" in p.sprintf("%BFD.flags%"):
+                poll_no_2_started = True
+                if time.time() < poll_sequence_start + poll_sequence_length:
+                    raise Exception("VPP started 2nd poll sequence too soon")
+                final = self.test_session.create_packet()
+                final[BFD].flags = "F"
+                self.test_session.send_packet(final)
+                break
+            else:
+                self.test_session.send_packet()
+        self.assertTrue(poll_no_2_started, "2nd poll sequence not performed")
+        # finish 2nd with final
+        final = self.test_session.create_packet()
+        final[BFD].flags = "F"
+        self.test_session.send_packet(final)
+        p = wait_for_bfd_packet(self)
+        # poll bit must not be set
+        self.assertNotIn("P", p.sprintf("%BFD.flags%"),
+                         "Poll bit set in BFD packet")
+
+    # returning inconsistent results requiring retries in per-patch tests
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_poll_response(self):
+        """ test correct response to control frame with poll bit set """
+        bfd_session_up(self)
+        poll = self.test_session.create_packet()
+        poll[BFD].flags = "P"
+        self.test_session.send_packet(poll)
+        final = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assertIn("F", final.sprintf("%BFD.flags%"))
+
+    def test_no_periodic_if_remote_demand(self):
+        """ no periodic frames outside poll sequence if remote demand set """
+        bfd_session_up(self)
+        demand = self.test_session.create_packet()
+        demand[BFD].flags = "D"
+        self.test_session.send_packet(demand)
+        transmit_time = 0.9 \
+            * max(self.vpp_session.required_min_rx,
+                  self.test_session.desired_min_tx) \
+            / USEC_IN_SEC
+        count = 0
+        for dummy in range(self.test_session.detect_mult * 2):
+            self.sleep(transmit_time)
+            self.test_session.send_packet(demand)
+            try:
+                p = wait_for_bfd_packet(self, timeout=0)
+                self.logger.error(ppp("Received unexpected packet:", p))
+                count += 1
+            except CaptureTimeoutError:
+                pass
+        events = self.vapi.collect_events()
+        for e in events:
+            self.logger.error("Received unexpected event: %s", e)
+        self.assert_equal(count, 0, "number of packets received")
+        self.assert_equal(len(events), 0, "number of events received")
+
+    def test_echo_looped_back(self):
+        """ echo packets looped back """
+        # don't need a session in this case..
+        self.vpp_session.remove_vpp_config()
+        self.pg0.enable_capture()
+        echo_packet_count = 10
+        # random source port low enough to increment a few times..
+        udp_sport_tx = randint(1, 50000)
+        udp_sport_rx = udp_sport_tx
+        echo_packet = (Ether(src=self.pg0.remote_mac,
+                             dst=self.pg0.local_mac) /
+                       IP(src=self.pg0.remote_ip4,
+                          dst=self.pg0.remote_ip4) /
+                       UDP(dport=BFD.udp_dport_echo) /
+                       Raw("this should be looped back"))
+        for dummy in range(echo_packet_count):
+            self.sleep(.01, "delay between echo packets")
+            echo_packet[UDP].sport = udp_sport_tx
+            udp_sport_tx += 1
+            self.logger.debug(ppp("Sending packet:", echo_packet))
+            self.pg0.add_stream(echo_packet)
+            self.pg_start()
+        for dummy in range(echo_packet_count):
+            p = self.pg0.wait_for_packet(1)
+            self.logger.debug(ppp("Got packet:", p))
+            ether = p[Ether]
+            self.assert_equal(self.pg0.remote_mac,
+                              ether.dst, "Destination MAC")
+            self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC")
+            ip = p[IP]
+            self.assert_equal(self.pg0.remote_ip4, ip.dst, "Destination IP")
+            self.assert_equal(self.pg0.remote_ip4, ip.src, "Destination IP")
+            udp = p[UDP]
+            self.assert_equal(udp.dport, BFD.udp_dport_echo,
+                              "UDP destination port")
+            self.assert_equal(udp.sport, udp_sport_rx, "UDP source port")
+            udp_sport_rx += 1
+            # need to compare the hex payload here, otherwise BFD_vpp_echo
+            # gets in way
+            self.assertEqual(scapy.compat.raw(p[UDP].payload),
+                             scapy.compat.raw(echo_packet[UDP].payload),
+                             "Received packet is not the echo packet sent")
+        self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== "
+                          "ECHO packet identifier for test purposes)")
+
+    def test_echo(self):
+        """ echo function """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.test_session.send_packet()
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        # echo shouldn't work without echo source set
+        for dummy in range(10):
+            sleep = self.vpp_session.required_min_rx / USEC_IN_SEC
+            self.sleep(sleep, "delay before sending bfd packet")
+            self.test_session.send_packet()
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(p[BFD].required_min_rx_interval,
+                          self.vpp_session.required_min_rx,
+                          "BFD required min rx interval")
+        self.test_session.send_packet()
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        echo_seen = False
+        # should be turned on - loopback echo packets
+        for dummy in range(3):
+            loop_until = time.time() + 0.75 * detection_time
+            while time.time() < loop_until:
+                p = self.pg0.wait_for_packet(1)
+                self.logger.debug(ppp("Got packet:", p))
+                if p[UDP].dport == BFD.udp_dport_echo:
+                    self.assert_equal(
+                        p[IP].dst, self.pg0.local_ip4, "BFD ECHO dst IP")
+                    self.assertNotEqual(p[IP].src, self.loopback0.local_ip4,
+                                        "BFD ECHO src IP equal to loopback IP")
+                    self.logger.debug(ppp("Looping back packet:", p))
+                    self.assert_equal(p[Ether].dst, self.pg0.remote_mac,
+                                      "ECHO packet destination MAC address")
+                    p[Ether].dst = self.pg0.local_mac
+                    self.pg0.add_stream(p)
+                    self.pg_start()
+                    echo_seen = True
+                elif p.haslayer(BFD):
+                    if echo_seen:
+                        self.assertGreaterEqual(
+                            p[BFD].required_min_rx_interval,
+                            1000000)
+                    if "P" in p.sprintf("%BFD.flags%"):
+                        final = self.test_session.create_packet()
+                        final[BFD].flags = "F"
+                        self.test_session.send_packet(final)
+                else:
+                    raise Exception(ppp("Received unknown packet:", p))
+
+                self.assert_equal(len(self.vapi.collect_events()), 0,
+                                  "number of bfd events")
+            self.test_session.send_packet()
+        self.assertTrue(echo_seen, "No echo packets received")
+
+    def test_echo_fail(self):
+        """ session goes down if echo function fails """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.test_session.send_packet()
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        # echo function should be used now, but we will drop the echo packets
+        verified_diag = False
+        for dummy in range(3):
+            loop_until = time.time() + 0.75 * detection_time
+            while time.time() < loop_until:
+                p = self.pg0.wait_for_packet(1)
+                self.logger.debug(ppp("Got packet:", p))
+                if p[UDP].dport == BFD.udp_dport_echo:
+                    # dropped
+                    pass
+                elif p.haslayer(BFD):
+                    if "P" in p.sprintf("%BFD.flags%"):
+                        self.assertGreaterEqual(
+                            p[BFD].required_min_rx_interval,
+                            1000000)
+                        final = self.test_session.create_packet()
+                        final[BFD].flags = "F"
+                        self.test_session.send_packet(final)
+                    if p[BFD].state == BFDState.down:
+                        self.assert_equal(p[BFD].diag,
+                                          BFDDiagCode.echo_function_failed,
+                                          BFDDiagCode)
+                        verified_diag = True
+                else:
+                    raise Exception(ppp("Received unknown packet:", p))
+            self.test_session.send_packet()
+        events = self.vapi.collect_events()
+        self.assert_equal(len(events), 1, "number of bfd events")
+        self.assert_equal(events[0].state, BFDState.down, BFDState)
+        self.assertTrue(verified_diag, "Incorrect diagnostics code received")
+
+    def test_echo_stop(self):
+        """ echo function stops if peer sets required min echo rx zero """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.test_session.send_packet()
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        # wait for first echo packet
+        while True:
+            p = self.pg0.wait_for_packet(1)
+            self.logger.debug(ppp("Got packet:", p))
+            if p[UDP].dport == BFD.udp_dport_echo:
+                self.logger.debug(ppp("Looping back packet:", p))
+                p[Ether].dst = self.pg0.local_mac
+                self.pg0.add_stream(p)
+                self.pg_start()
+                break
+            elif p.haslayer(BFD):
+                # ignore BFD
+                pass
+            else:
+                raise Exception(ppp("Received unknown packet:", p))
+        self.test_session.update(required_min_echo_rx=0)
+        self.test_session.send_packet()
+        # echo packets shouldn't arrive anymore
+        for dummy in range(5):
+            wait_for_bfd_packet(
+                self, pcap_time_min=time.time() - self.vpp_clock_offset)
+            self.test_session.send_packet()
+            events = self.vapi.collect_events()
+            self.assert_equal(len(events), 0, "number of bfd events")
+
+    def test_echo_source_removed(self):
+        """ echo function stops if echo source is removed """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.test_session.send_packet()
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        # wait for first echo packet
+        while True:
+            p = self.pg0.wait_for_packet(1)
+            self.logger.debug(ppp("Got packet:", p))
+            if p[UDP].dport == BFD.udp_dport_echo:
+                self.logger.debug(ppp("Looping back packet:", p))
+                p[Ether].dst = self.pg0.local_mac
+                self.pg0.add_stream(p)
+                self.pg_start()
+                break
+            elif p.haslayer(BFD):
+                # ignore BFD
+                pass
+            else:
+                raise Exception(ppp("Received unknown packet:", p))
+        self.vapi.bfd_udp_del_echo_source()
+        self.test_session.send_packet()
+        # echo packets shouldn't arrive anymore
+        for dummy in range(5):
+            wait_for_bfd_packet(
+                self, pcap_time_min=time.time() - self.vpp_clock_offset)
+            self.test_session.send_packet()
+            events = self.vapi.collect_events()
+            self.assert_equal(len(events), 0, "number of bfd events")
+
+    def test_stale_echo(self):
+        """ stale echo packets don't keep a session up """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        self.test_session.send_packet()
+        # should be turned on - loopback echo packets
+        echo_packet = None
+        timeout_at = None
+        timeout_ok = False
+        for dummy in range(10 * self.vpp_session.detect_mult):
+            p = self.pg0.wait_for_packet(1)
+            if p[UDP].dport == BFD.udp_dport_echo:
+                if echo_packet is None:
+                    self.logger.debug(ppp("Got first echo packet:", p))
+                    echo_packet = p
+                    timeout_at = time.time() + self.vpp_session.detect_mult * \
+                        self.test_session.required_min_echo_rx / USEC_IN_SEC
+                else:
+                    self.logger.debug(ppp("Got followup echo packet:", p))
+                self.logger.debug(ppp("Looping back first echo packet:", p))
+                echo_packet[Ether].dst = self.pg0.local_mac
+                self.pg0.add_stream(echo_packet)
+                self.pg_start()
+            elif p.haslayer(BFD):
+                self.logger.debug(ppp("Got packet:", p))
+                if "P" in p.sprintf("%BFD.flags%"):
+                    final = self.test_session.create_packet()
+                    final[BFD].flags = "F"
+                    self.test_session.send_packet(final)
+                if p[BFD].state == BFDState.down:
+                    self.assertIsNotNone(
+                        timeout_at,
+                        "Session went down before first echo packet received")
+                    now = time.time()
+                    self.assertGreaterEqual(
+                        now, timeout_at,
+                        "Session timeout at %s, but is expected at %s" %
+                        (now, timeout_at))
+                    self.assert_equal(p[BFD].diag,
+                                      BFDDiagCode.echo_function_failed,
+                                      BFDDiagCode)
+                    events = self.vapi.collect_events()
+                    self.assert_equal(len(events), 1, "number of bfd events")
+                    self.assert_equal(events[0].state, BFDState.down, BFDState)
+                    timeout_ok = True
+                    break
+            else:
+                raise Exception(ppp("Received unknown packet:", p))
+            self.test_session.send_packet()
+        self.assertTrue(timeout_ok, "Expected timeout event didn't occur")
+
+    def test_invalid_echo_checksum(self):
+        """ echo packets with invalid checksum don't keep a session up """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        self.test_session.send_packet()
+        # should be turned on - loopback echo packets
+        timeout_at = None
+        timeout_ok = False
+        for dummy in range(10 * self.vpp_session.detect_mult):
+            p = self.pg0.wait_for_packet(1)
+            if p[UDP].dport == BFD.udp_dport_echo:
+                self.logger.debug(ppp("Got echo packet:", p))
+                if timeout_at is None:
+                    timeout_at = time.time() + self.vpp_session.detect_mult * \
+                        self.test_session.required_min_echo_rx / USEC_IN_SEC
+                p[BFD_vpp_echo].checksum = getrandbits(64)
+                p[Ether].dst = self.pg0.local_mac
+                self.logger.debug(ppp("Looping back modified echo packet:", p))
+                self.pg0.add_stream(p)
+                self.pg_start()
+            elif p.haslayer(BFD):
+                self.logger.debug(ppp("Got packet:", p))
+                if "P" in p.sprintf("%BFD.flags%"):
+                    final = self.test_session.create_packet()
+                    final[BFD].flags = "F"
+                    self.test_session.send_packet(final)
+                if p[BFD].state == BFDState.down:
+                    self.assertIsNotNone(
+                        timeout_at,
+                        "Session went down before first echo packet received")
+                    now = time.time()
+                    self.assertGreaterEqual(
+                        now, timeout_at,
+                        "Session timeout at %s, but is expected at %s" %
+                        (now, timeout_at))
+                    self.assert_equal(p[BFD].diag,
+                                      BFDDiagCode.echo_function_failed,
+                                      BFDDiagCode)
+                    events = self.vapi.collect_events()
+                    self.assert_equal(len(events), 1, "number of bfd events")
+                    self.assert_equal(events[0].state, BFDState.down, BFDState)
+                    timeout_ok = True
+                    break
+            else:
+                raise Exception(ppp("Received unknown packet:", p))
+            self.test_session.send_packet()
+        self.assertTrue(timeout_ok, "Expected timeout event didn't occur")
+
+    def test_admin_up_down(self):
+        """ put session admin-up and admin-down """
+        bfd_session_up(self)
+        self.vpp_session.admin_down()
+        self.pg0.enable_capture()
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.admin_down)
+        for dummy in range(2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.admin_down, BFDState)
+        # try to bring session up - shouldn't be possible
+        self.test_session.update(state=BFDState.init)
+        self.test_session.send_packet()
+        for dummy in range(2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.admin_down, BFDState)
+        self.vpp_session.admin_up()
+        self.test_session.update(state=BFDState.down)
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.down)
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(p[BFD].state, BFDState.down, BFDState)
+        self.test_session.send_packet()
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(p[BFD].state, BFDState.init, BFDState)
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.init)
+        self.test_session.update(state=BFDState.up)
+        self.test_session.send_packet()
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.up)
+
+    def test_config_change_remote_demand(self):
+        """ configuration change while peer in demand mode """
+        bfd_session_up(self)
+        demand = self.test_session.create_packet()
+        demand[BFD].flags = "D"
+        self.test_session.send_packet(demand)
+        self.vpp_session.modify_parameters(
+            required_min_rx=2 * self.vpp_session.required_min_rx)
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        # poll bit must be set
+        self.assertIn("P", p.sprintf("%BFD.flags%"), "Poll bit not set")
+        # terminate poll sequence
+        final = self.test_session.create_packet()
+        final[BFD].flags = "D+F"
+        self.test_session.send_packet(final)
+        # vpp should be quiet now again
+        transmit_time = 0.9 \
+            * max(self.vpp_session.required_min_rx,
+                  self.test_session.desired_min_tx) \
+            / USEC_IN_SEC
+        count = 0
+        for dummy in range(self.test_session.detect_mult * 2):
+            self.sleep(transmit_time)
+            self.test_session.send_packet(demand)
+            try:
+                p = wait_for_bfd_packet(self, timeout=0)
+                self.logger.error(ppp("Received unexpected packet:", p))
+                count += 1
+            except CaptureTimeoutError:
+                pass
+        events = self.vapi.collect_events()
+        for e in events:
+            self.logger.error("Received unexpected event: %s", e)
+        self.assert_equal(count, 0, "number of packets received")
+        self.assert_equal(len(events), 0, "number of events received")
+
+    def test_intf_deleted(self):
+        """ interface with bfd session deleted """
+        intf = VppLoInterface(self)
+        intf.config_ip4()
+        intf.admin_up()
+        sw_if_index = intf.sw_if_index
+        vpp_session = VppBFDUDPSession(self, intf, intf.remote_ip4)
+        vpp_session.add_vpp_config()
+        vpp_session.admin_up()
+        intf.remove_vpp_config()
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+
+@tag_run_solo
+@tag_fixme_vpp_workers
+class BFD6TestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD) (IPv6) """
+
+    pg0 = None
+    vpp_clock_offset = None
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFD6TestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces([0])
+            cls.pg0.config_ip6()
+            cls.pg0.configure_ipv6_neighbors()
+            cls.pg0.admin_up()
+            cls.pg0.resolve_ndp()
+            cls.create_loopback_interfaces(1)
+            cls.loopback0 = cls.lo_interfaces[0]
+            cls.loopback0.config_ip6()
+            cls.loopback0.admin_up()
+
+        except Exception:
+            super(BFD6TestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFD6TestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFD6TestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+        try:
+            self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                                self.pg0.remote_ip6,
+                                                af=AF_INET6)
+            self.vpp_session.add_vpp_config()
+            self.vpp_session.admin_up()
+            self.test_session = BFDTestSession(self, self.pg0, AF_INET6)
+            self.logger.debug(self.vapi.cli("show adj nbr"))
+        except BaseException:
+            self.vapi.want_bfd_events(enable_disable=0)
+            raise
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=0)
+        self.vapi.collect_events()  # clear the event queue
+        super(BFD6TestCase, self).tearDown()
+
+    def test_session_up(self):
+        """ bring BFD session up """
+        bfd_session_up(self)
+
+    def test_session_up_by_ip(self):
+        """ bring BFD session up - first frame looked up by address pair """
+        self.logger.info("BFD: Sending Slow control frame")
+        self.test_session.update(my_discriminator=randint(0, 40000000))
+        self.test_session.send_packet()
+        self.pg0.enable_capture()
+        p = self.pg0.wait_for_packet(1)
+        self.assert_equal(p[BFD].your_discriminator,
+                          self.test_session.my_discriminator,
+                          "BFD - your discriminator")
+        self.assert_equal(p[BFD].state, BFDState.init, BFDState)
+        self.test_session.update(your_discriminator=p[BFD].my_discriminator,
+                                 state=BFDState.up)
+        self.logger.info("BFD: Waiting for event")
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.init)
+        self.logger.info("BFD: Sending Up")
+        self.test_session.send_packet()
+        self.logger.info("BFD: Waiting for event")
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        verify_event(self, e, expected_state=BFDState.up)
+        self.logger.info("BFD: Session is Up")
+        self.test_session.update(state=BFDState.up)
+        self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_hold_up(self):
+        """ hold BFD session up """
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            wait_for_bfd_packet(self)
+            self.test_session.send_packet()
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_echo_looped_back(self):
+        """ echo packets looped back """
+        # don't need a session in this case..
+        self.vpp_session.remove_vpp_config()
+        self.pg0.enable_capture()
+        echo_packet_count = 10
+        # random source port low enough to increment a few times..
+        udp_sport_tx = randint(1, 50000)
+        udp_sport_rx = udp_sport_tx
+        echo_packet = (Ether(src=self.pg0.remote_mac,
+                             dst=self.pg0.local_mac) /
+                       IPv6(src=self.pg0.remote_ip6,
+                            dst=self.pg0.remote_ip6) /
+                       UDP(dport=BFD.udp_dport_echo) /
+                       Raw("this should be looped back"))
+        for dummy in range(echo_packet_count):
+            self.sleep(.01, "delay between echo packets")
+            echo_packet[UDP].sport = udp_sport_tx
+            udp_sport_tx += 1
+            self.logger.debug(ppp("Sending packet:", echo_packet))
+            self.pg0.add_stream(echo_packet)
+            self.pg_start()
+        for dummy in range(echo_packet_count):
+            p = self.pg0.wait_for_packet(1)
+            self.logger.debug(ppp("Got packet:", p))
+            ether = p[Ether]
+            self.assert_equal(self.pg0.remote_mac,
+                              ether.dst, "Destination MAC")
+            self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC")
+            ip = p[IPv6]
+            self.assert_equal(self.pg0.remote_ip6, ip.dst, "Destination IP")
+            self.assert_equal(self.pg0.remote_ip6, ip.src, "Destination IP")
+            udp = p[UDP]
+            self.assert_equal(udp.dport, BFD.udp_dport_echo,
+                              "UDP destination port")
+            self.assert_equal(udp.sport, udp_sport_rx, "UDP source port")
+            udp_sport_rx += 1
+            # need to compare the hex payload here, otherwise BFD_vpp_echo
+            # gets in way
+            self.assertEqual(scapy.compat.raw(p[UDP].payload),
+                             scapy.compat.raw(echo_packet[UDP].payload),
+                             "Received packet is not the echo packet sent")
+        self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== "
+                          "ECHO packet identifier for test purposes)")
+        self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== "
+                          "ECHO packet identifier for test purposes)")
+
+    def test_echo(self):
+        """ echo function """
+        bfd_session_up(self)
+        self.test_session.update(required_min_echo_rx=150000)
+        self.test_session.send_packet()
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        # echo shouldn't work without echo source set
+        for dummy in range(10):
+            sleep = self.vpp_session.required_min_rx / USEC_IN_SEC
+            self.sleep(sleep, "delay before sending bfd packet")
+            self.test_session.send_packet()
+        p = wait_for_bfd_packet(
+            self, pcap_time_min=time.time() - self.vpp_clock_offset)
+        self.assert_equal(p[BFD].required_min_rx_interval,
+                          self.vpp_session.required_min_rx,
+                          "BFD required min rx interval")
+        self.test_session.send_packet()
+        self.vapi.bfd_udp_set_echo_source(
+            sw_if_index=self.loopback0.sw_if_index)
+        echo_seen = False
+        # should be turned on - loopback echo packets
+        for dummy in range(3):
+            loop_until = time.time() + 0.75 * detection_time
+            while time.time() < loop_until:
+                p = self.pg0.wait_for_packet(1)
+                self.logger.debug(ppp("Got packet:", p))
+                if p[UDP].dport == BFD.udp_dport_echo:
+                    self.assert_equal(
+                        p[IPv6].dst, self.pg0.local_ip6, "BFD ECHO dst IP")
+                    self.assertNotEqual(p[IPv6].src, self.loopback0.local_ip6,
+                                        "BFD ECHO src IP equal to loopback IP")
+                    self.logger.debug(ppp("Looping back packet:", p))
+                    self.assert_equal(p[Ether].dst, self.pg0.remote_mac,
+                                      "ECHO packet destination MAC address")
+                    p[Ether].dst = self.pg0.local_mac
+                    self.pg0.add_stream(p)
+                    self.pg_start()
+                    echo_seen = True
+                elif p.haslayer(BFD):
+                    if echo_seen:
+                        self.assertGreaterEqual(
+                            p[BFD].required_min_rx_interval,
+                            1000000)
+                    if "P" in p.sprintf("%BFD.flags%"):
+                        final = self.test_session.create_packet()
+                        final[BFD].flags = "F"
+                        self.test_session.send_packet(final)
+                else:
+                    raise Exception(ppp("Received unknown packet:", p))
+
+                self.assert_equal(len(self.vapi.collect_events()), 0,
+                                  "number of bfd events")
+            self.test_session.send_packet()
+        self.assertTrue(echo_seen, "No echo packets received")
+
+    def test_intf_deleted(self):
+        """ interface with bfd session deleted """
+        intf = VppLoInterface(self)
+        intf.config_ip6()
+        intf.admin_up()
+        sw_if_index = intf.sw_if_index
+        vpp_session = VppBFDUDPSession(
+            self, intf, intf.remote_ip6, af=AF_INET6)
+        vpp_session.add_vpp_config()
+        vpp_session.admin_up()
+        intf.remove_vpp_config()
+        e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
+        self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+
+@tag_run_solo
+class BFDFIBTestCase(VppTestCase):
+    """ BFD-FIB interactions (IPv6) """
+
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDFIBTestCase, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDFIBTestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDFIBTestCase, self).setUp()
+        self.create_pg_interfaces(range(1))
+
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.configure_ipv6_neighbors()
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=False)
+
+        super(BFDFIBTestCase, self).tearDown()
+
+    @staticmethod
+    def pkt_is_not_data_traffic(p):
+        """ not data traffic implies BFD or the usual IPv6 ND/RA"""
+        if p.haslayer(BFD) or is_ipv6_misc(p):
+            return True
+        return False
+
+    def test_session_with_fib(self):
+        """ BFD-FIB interactions """
+
+        # packets to match against both of the routes
+        p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IPv6(src="3001::1", dst="2001::1") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IPv6(src="3001::1", dst="2002::1") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))]
+
+        # A recursive and a non-recursive route via a next-hop that
+        # will have a BFD session
+        ip_2001_s_64 = VppIpRoute(self, "2001::", 64,
+                                  [VppRoutePath(self.pg0.remote_ip6,
+                                                self.pg0.sw_if_index)])
+        ip_2002_s_64 = VppIpRoute(self, "2002::", 64,
+                                  [VppRoutePath(self.pg0.remote_ip6,
+                                                0xffffffff)])
+        ip_2001_s_64.add_vpp_config()
+        ip_2002_s_64.add_vpp_config()
+
+        # bring the session up now the routes are present
+        self.vpp_session = VppBFDUDPSession(self,
+                                            self.pg0,
+                                            self.pg0.remote_ip6,
+                                            af=AF_INET6)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        self.test_session = BFDTestSession(self, self.pg0, AF_INET6)
+
+        # session is up - traffic passes
+        bfd_session_up(self)
+
+        self.pg0.add_stream(p)
+        self.pg_start()
+        for packet in p:
+            captured = self.pg0.wait_for_packet(
+                1,
+                filter_out_fn=self.pkt_is_not_data_traffic)
+            self.assertEqual(captured[IPv6].dst,
+                             packet[IPv6].dst)
+
+        # session is up - traffic is dropped
+        bfd_session_down(self)
+
+        self.pg0.add_stream(p)
+        self.pg_start()
+        with self.assertRaises(CaptureTimeoutError):
+            self.pg0.wait_for_packet(1, self.pkt_is_not_data_traffic)
+
+        # session is up - traffic passes
+        bfd_session_up(self)
+
+        self.pg0.add_stream(p)
+        self.pg_start()
+        for packet in p:
+            captured = self.pg0.wait_for_packet(
+                1,
+                filter_out_fn=self.pkt_is_not_data_traffic)
+            self.assertEqual(captured[IPv6].dst,
+                             packet[IPv6].dst)
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDTunTestCase(VppTestCase):
+    """ BFD over GRE tunnel """
+
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDTunTestCase, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDTunTestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDTunTestCase, self).setUp()
+        self.create_pg_interfaces(range(1))
+
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=0)
+
+        super(BFDTunTestCase, self).tearDown()
+
+    @staticmethod
+    def pkt_is_not_data_traffic(p):
+        """ not data traffic implies BFD or the usual IPv6 ND/RA"""
+        if p.haslayer(BFD) or is_ipv6_misc(p):
+            return True
+        return False
+
+    def test_bfd_o_gre(self):
+        """ BFD-o-GRE  """
+
+        # A GRE interface over which to run a BFD session
+        gre_if = VppGreInterface(self,
+                                 self.pg0.local_ip4,
+                                 self.pg0.remote_ip4)
+        gre_if.add_vpp_config()
+        gre_if.admin_up()
+        gre_if.config_ip4()
+
+        # bring the session up now the routes are present
+        self.vpp_session = VppBFDUDPSession(self,
+                                            gre_if,
+                                            gre_if.remote_ip4,
+                                            is_tunnel=True)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+
+        self.test_session = BFDTestSession(
+            self, gre_if, AF_INET,
+            tunnel_header=(IP(src=self.pg0.remote_ip4,
+                              dst=self.pg0.local_ip4) /
+                           GRE()),
+            phy_interface=self.pg0)
+
+        # packets to match against both of the routes
+        p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst=gre_if.remote_ip4) /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))]
+
+        # session is up - traffic passes
+        bfd_session_up(self)
+
+        self.send_and_expect(self.pg0, p, self.pg0)
+
+        # bring session down
+        bfd_session_down(self)
+
+
+@tag_run_solo
+class BFDSHA1TestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
+
+    pg0 = None
+    vpp_clock_offset = None
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDSHA1TestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces([0])
+            cls.pg0.config_ip4()
+            cls.pg0.admin_up()
+            cls.pg0.resolve_arp()
+
+        except Exception:
+            super(BFDSHA1TestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDSHA1TestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDSHA1TestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=False)
+        self.vapi.collect_events()  # clear the event queue
+        super(BFDSHA1TestCase, self).tearDown()
+
+    def test_session_up(self):
+        """ bring BFD session up """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4,
+                                            sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+
+    def test_hold_up(self):
+        """ hold BFD session up """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4,
+                                            sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            wait_for_bfd_packet(self)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_hold_up_meticulous(self):
+        """ hold BFD session up - meticulous auth """
+        key = self.factory.create_random_key(
+            self, BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        # specify sequence number so that it wraps
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id,
+            our_seq_number=0xFFFFFFFF - 4)
+        bfd_session_up(self)
+        for dummy in range(30):
+            wait_for_bfd_packet(self)
+            self.test_session.inc_seq_num()
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_send_bad_seq_number(self):
+        """ session is not kept alive by msgs with bad sequence numbers"""
+        key = self.factory.create_random_key(
+            self, BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        send_until = time.time() + 2 * detection_time
+        while time.time() < send_until:
+            self.test_session.send_packet()
+            self.sleep(0.7 * self.vpp_session.required_min_rx / USEC_IN_SEC,
+                       "time between bfd packets")
+        e = self.vapi.collect_events()
+        # session should be down now, because the sequence numbers weren't
+        # updated
+        self.assert_equal(len(e), 1, "number of bfd events")
+        verify_event(self, e[0], expected_state=BFDState.down)
+
+    def execute_rogue_session_scenario(self, vpp_bfd_udp_session,
+                                       legitimate_test_session,
+                                       rogue_test_session,
+                                       rogue_bfd_values=None):
+        """ execute a rogue session interaction scenario
+
+        1. create vpp session, add config
+        2. bring the legitimate session up
+        3. copy the bfd values from legitimate session to rogue session
+        4. apply rogue_bfd_values to rogue session
+        5. set rogue session state to down
+        6. send message to take the session down from the rogue session
+        7. assert that the legitimate session is unaffected
+        """
+
+        self.vpp_session = vpp_bfd_udp_session
+        self.vpp_session.add_vpp_config()
+        self.test_session = legitimate_test_session
+        # bring vpp session up
+        bfd_session_up(self)
+        # send packet from rogue session
+        rogue_test_session.update(
+            my_discriminator=self.test_session.my_discriminator,
+            your_discriminator=self.test_session.your_discriminator,
+            desired_min_tx=self.test_session.desired_min_tx,
+            required_min_rx=self.test_session.required_min_rx,
+            detect_mult=self.test_session.detect_mult,
+            diag=self.test_session.diag,
+            state=self.test_session.state,
+            auth_type=self.test_session.auth_type)
+        if rogue_bfd_values:
+            rogue_test_session.update(**rogue_bfd_values)
+        rogue_test_session.update(state=BFDState.down)
+        rogue_test_session.send_packet()
+        wait_for_bfd_packet(self)
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+    def test_mismatch_auth(self):
+        """ session is not brought down by unauthenticated msg """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+        legitimate_test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id)
+        rogue_test_session = BFDTestSession(self, self.pg0, AF_INET)
+        self.execute_rogue_session_scenario(vpp_session,
+                                            legitimate_test_session,
+                                            rogue_test_session)
+
+    def test_mismatch_bfd_key_id(self):
+        """ session is not brought down by msg with non-existent key-id """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+        # pick a different random bfd key id
+        x = randint(0, 255)
+        while x == vpp_session.bfd_key_id:
+            x = randint(0, 255)
+        legitimate_test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id)
+        rogue_test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=x)
+        self.execute_rogue_session_scenario(vpp_session,
+                                            legitimate_test_session,
+                                            rogue_test_session)
+
+    def test_mismatched_auth_type(self):
+        """ session is not brought down by msg with wrong auth type """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+        legitimate_test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id)
+        rogue_test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id)
+        self.execute_rogue_session_scenario(
+            vpp_session, legitimate_test_session, rogue_test_session,
+            {'auth_type': BFDAuthType.keyed_md5})
+
+    def test_restart(self):
+        """ simulate remote peer restart and resynchronization """
+        key = self.factory.create_random_key(
+            self, BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id, our_seq_number=0)
+        bfd_session_up(self)
+        # don't send any packets for 2*detection_time
+        detection_time = self.test_session.detect_mult *\
+            self.vpp_session.required_min_rx / USEC_IN_SEC
+        self.sleep(2 * detection_time, "simulating peer restart")
+        events = self.vapi.collect_events()
+        self.assert_equal(len(events), 1, "number of bfd events")
+        verify_event(self, events[0], expected_state=BFDState.down)
+        self.test_session.update(state=BFDState.down)
+        # reset sequence number
+        self.test_session.our_seq_number = 0
+        self.test_session.vpp_seq_number = None
+        # now throw away any pending packets
+        self.pg0.enable_capture()
+        self.test_session.my_discriminator = 0
+        bfd_session_up(self)
+
+
+@tag_run_solo
+class BFDAuthOnOffTestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD) (changing auth) """
+
+    pg0 = None
+    vpp_session = None
+    test_session = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDAuthOnOffTestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces([0])
+            cls.pg0.config_ip4()
+            cls.pg0.admin_up()
+            cls.pg0.resolve_arp()
+
+        except Exception:
+            super(BFDAuthOnOffTestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDAuthOnOffTestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDAuthOnOffTestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+        self.vapi.want_bfd_events()
+        self.pg0.enable_capture()
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.want_bfd_events(enable_disable=False)
+        self.vapi.collect_events()  # clear the event queue
+        super(BFDAuthOnOffTestCase, self).tearDown()
+
+    def test_auth_on_immediate(self):
+        """ turn auth on without disturbing session state (immediate) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(self, self.pg0, AF_INET)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.vpp_session.activate_auth(key)
+        self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
+        self.test_session.sha1_key = key
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_auth_off_immediate(self):
+        """ turn auth off without disturbing session state (immediate) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        # self.vapi.want_bfd_events(enable_disable=0)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.inc_seq_num()
+            self.test_session.send_packet()
+        self.vpp_session.deactivate_auth()
+        self.test_session.bfd_key_id = None
+        self.test_session.sha1_key = None
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.inc_seq_num()
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_auth_change_key_immediate(self):
+        """ change auth key without disturbing session state (immediate) """
+        key1 = self.factory.create_random_key(self)
+        key1.add_vpp_config()
+        key2 = self.factory.create_random_key(self)
+        key2.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key1)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key1,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.vpp_session.activate_auth(key2)
+        self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
+        self.test_session.sha1_key = key2
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_auth_on_delayed(self):
+        """ turn auth on without disturbing session state (delayed) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(self, self.pg0, AF_INET)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            wait_for_bfd_packet(self)
+            self.test_session.send_packet()
+        self.vpp_session.activate_auth(key, delayed=True)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
+        self.test_session.sha1_key = key
+        self.test_session.send_packet()
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_auth_off_delayed(self):
+        """ turn auth off without disturbing session state (delayed) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key)
+        self.vpp_session.add_vpp_config()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.vpp_session.deactivate_auth(delayed=True)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.test_session.bfd_key_id = None
+        self.test_session.sha1_key = None
+        self.test_session.send_packet()
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+    def test_auth_change_key_delayed(self):
+        """ change auth key without disturbing session state (delayed) """
+        key1 = self.factory.create_random_key(self)
+        key1.add_vpp_config()
+        key2 = self.factory.create_random_key(self)
+        key2.add_vpp_config()
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip4, sha1_key=key1)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        self.test_session = BFDTestSession(
+            self, self.pg0, AF_INET, sha1_key=key1,
+            bfd_key_id=self.vpp_session.bfd_key_id)
+        bfd_session_up(self)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.vpp_session.activate_auth(key2, delayed=True)
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
+        self.test_session.sha1_key = key2
+        self.test_session.send_packet()
+        for dummy in range(self.test_session.detect_mult * 2):
+            p = wait_for_bfd_packet(self)
+            self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+            self.test_session.send_packet()
+        self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+        self.assert_equal(len(self.vapi.collect_events()), 0,
+                          "number of bfd events")
+
+
+@tag_run_solo
+class BFDCLITestCase(VppTestCase):
+    """Bidirectional Forwarding Detection (BFD) (CLI) """
+    pg0 = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(BFDCLITestCase, cls).setUpClass()
+        cls.vapi.cli("set log class bfd level debug")
+        try:
+            cls.create_pg_interfaces((0,))
+            cls.pg0.config_ip4()
+            cls.pg0.config_ip6()
+            cls.pg0.resolve_arp()
+            cls.pg0.resolve_ndp()
+
+        except Exception:
+            super(BFDCLITestCase, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(BFDCLITestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(BFDCLITestCase, self).setUp()
+        self.factory = AuthKeyFactory()
+        self.pg0.enable_capture()
+
+    def tearDown(self):
+        try:
+            self.vapi.want_bfd_events(enable_disable=False)
+        except UnexpectedApiReturnValueError:
+            # some tests aren't subscribed, so this is not an issue
+            pass
+        self.vapi.collect_events()  # clear the event queue
+        super(BFDCLITestCase, self).tearDown()
+
+    def cli_verify_no_response(self, cli):
+        """ execute a CLI, asserting that the response is empty """
+        self.assert_equal(self.vapi.cli(cli),
+                          "",
+                          "CLI command response")
+
+    def cli_verify_response(self, cli, expected):
+        """ execute a CLI, asserting that the response matches expectation """
+        try:
+            reply = self.vapi.cli(cli)
+        except CliFailedCommandError as cli_error:
+            reply = str(cli_error)
+        self.assert_equal(reply.strip(),
+                          expected,
+                          "CLI command response")
+
+    def test_show(self):
+        """ show commands """
+        k1 = self.factory.create_random_key(self)
+        k1.add_vpp_config()
+        k2 = self.factory.create_random_key(
+            self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+        k2.add_vpp_config()
+        s1 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        s1.add_vpp_config()
+        s2 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6, af=AF_INET6,
+                              sha1_key=k2)
+        s2.add_vpp_config()
+        self.logger.info(self.vapi.ppcli("show bfd keys"))
+        self.logger.info(self.vapi.ppcli("show bfd sessions"))
+        self.logger.info(self.vapi.ppcli("show bfd"))
+
+    def test_set_del_sha1_key(self):
+        """ set/delete SHA1 auth key """
+        k = self.factory.create_random_key(self)
+        self.registry.register(k, self.logger)
+        self.cli_verify_no_response(
+            "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+            (k.conf_key_id,
+                "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key)))
+        self.assertTrue(k.query_vpp_config())
+        self.vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=k)
+        self.vpp_session.add_vpp_config()
+        self.test_session = \
+            BFDTestSession(self, self.pg0, AF_INET, sha1_key=k,
+                           bfd_key_id=self.vpp_session.bfd_key_id)
+        self.vapi.want_bfd_events()
+        bfd_session_up(self)
+        bfd_session_down(self)
+        # try to replace the secret for the key - should fail because the key
+        # is in-use
+        k2 = self.factory.create_random_key(self)
+        self.cli_verify_response(
+            "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+            (k.conf_key_id,
+                "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)),
+            "bfd key set: `bfd_auth_set_key' API call failed, "
+            "rv=-103:BFD object in use")
+        # manipulating the session using old secret should still work
+        bfd_session_up(self)
+        bfd_session_down(self)
+        self.vpp_session.remove_vpp_config()
+        self.cli_verify_no_response(
+            "bfd key del conf-key-id %s" % k.conf_key_id)
+        self.assertFalse(k.query_vpp_config())
+
+    def test_set_del_meticulous_sha1_key(self):
+        """ set/delete meticulous SHA1 auth key """
+        k = self.factory.create_random_key(
+            self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+        self.registry.register(k, self.logger)
+        self.cli_verify_no_response(
+            "bfd key set conf-key-id %s type meticulous-keyed-sha1 secret %s" %
+            (k.conf_key_id,
+                "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key)))
+        self.assertTrue(k.query_vpp_config())
+        self.vpp_session = VppBFDUDPSession(self, self.pg0,
+                                            self.pg0.remote_ip6, af=AF_INET6,
+                                            sha1_key=k)
+        self.vpp_session.add_vpp_config()
+        self.vpp_session.admin_up()
+        self.test_session = \
+            BFDTestSession(self, self.pg0, AF_INET6, sha1_key=k,
+                           bfd_key_id=self.vpp_session.bfd_key_id)
+        self.vapi.want_bfd_events()
+        bfd_session_up(self)
+        bfd_session_down(self)
+        # try to replace the secret for the key - should fail because the key
+        # is in-use
+        k2 = self.factory.create_random_key(self)
+        self.cli_verify_response(
+            "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+            (k.conf_key_id,
+                "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)),
+            "bfd key set: `bfd_auth_set_key' API call failed, "
+            "rv=-103:BFD object in use")
+        # manipulating the session using old secret should still work
+        bfd_session_up(self)
+        bfd_session_down(self)
+        self.vpp_session.remove_vpp_config()
+        self.cli_verify_no_response(
+            "bfd key del conf-key-id %s" % k.conf_key_id)
+        self.assertFalse(k.query_vpp_config())
+
+    def test_add_mod_del_bfd_udp(self):
+        """ create/modify/delete IPv4 BFD UDP session """
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4)
+        self.registry.register(vpp_session, self.logger)
+        cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+            "peer-addr %s desired-min-tx %s required-min-rx %s "\
+            "detect-mult %s" % (self.pg0.name, self.pg0.local_ip4,
+                                self.pg0.remote_ip4,
+                                vpp_session.desired_min_tx,
+                                vpp_session.required_min_rx,
+                                vpp_session.detect_mult)
+        self.cli_verify_no_response(cli_add_cmd)
+        # 2nd add should fail
+        self.cli_verify_response(
+            cli_add_cmd,
+            "bfd udp session add: `bfd_add_add_session' API call"
+            " failed, rv=-101:Duplicate BFD object")
+        verify_bfd_session_config(self, vpp_session)
+        mod_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4,
+            required_min_rx=2 * vpp_session.required_min_rx,
+            desired_min_tx=3 * vpp_session.desired_min_tx,
+            detect_mult=4 * vpp_session.detect_mult)
+        self.cli_verify_no_response(
+            "bfd udp session mod interface %s local-addr %s peer-addr %s "
+            "desired-min-tx %s required-min-rx %s detect-mult %s" %
+            (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+             mod_session.desired_min_tx, mod_session.required_min_rx,
+             mod_session.detect_mult))
+        verify_bfd_session_config(self, mod_session)
+        cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+            "peer-addr %s" % (self.pg0.name,
+                              self.pg0.local_ip4, self.pg0.remote_ip4)
+        self.cli_verify_no_response(cli_del_cmd)
+        # 2nd del is expected to fail
+        self.cli_verify_response(
+            cli_del_cmd, "bfd udp session del: `bfd_udp_del_session' API call"
+            " failed, rv=-102:No such BFD object")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+    def test_add_mod_del_bfd_udp6(self):
+        """ create/modify/delete IPv6 BFD UDP session """
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip6, af=AF_INET6)
+        self.registry.register(vpp_session, self.logger)
+        cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+            "peer-addr %s desired-min-tx %s required-min-rx %s "\
+            "detect-mult %s" % (self.pg0.name, self.pg0.local_ip6,
+                                self.pg0.remote_ip6,
+                                vpp_session.desired_min_tx,
+                                vpp_session.required_min_rx,
+                                vpp_session.detect_mult)
+        self.cli_verify_no_response(cli_add_cmd)
+        # 2nd add should fail
+        self.cli_verify_response(
+            cli_add_cmd,
+            "bfd udp session add: `bfd_add_add_session' API call"
+            " failed, rv=-101:Duplicate BFD object")
+        verify_bfd_session_config(self, vpp_session)
+        mod_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip6, af=AF_INET6,
+            required_min_rx=2 * vpp_session.required_min_rx,
+            desired_min_tx=3 * vpp_session.desired_min_tx,
+            detect_mult=4 * vpp_session.detect_mult)
+        self.cli_verify_no_response(
+            "bfd udp session mod interface %s local-addr %s peer-addr %s "
+            "desired-min-tx %s required-min-rx %s detect-mult %s" %
+            (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+             mod_session.desired_min_tx,
+             mod_session.required_min_rx, mod_session.detect_mult))
+        verify_bfd_session_config(self, mod_session)
+        cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+            "peer-addr %s" % (self.pg0.name,
+                              self.pg0.local_ip6, self.pg0.remote_ip6)
+        self.cli_verify_no_response(cli_del_cmd)
+        # 2nd del is expected to fail
+        self.cli_verify_response(
+            cli_del_cmd,
+            "bfd udp session del: `bfd_udp_del_session' API call"
+            " failed, rv=-102:No such BFD object")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+    def test_add_mod_del_bfd_udp_auth(self):
+        """ create/modify/delete IPv4 BFD UDP session (authenticated) """
+        key = self.factory.create_random_key(self)
+        key.add_vpp_config()
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+        self.registry.register(vpp_session, self.logger)
+        cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+            "peer-addr %s desired-min-tx %s required-min-rx %s "\
+            "detect-mult %s conf-key-id %s bfd-key-id %s"\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+               vpp_session.desired_min_tx, vpp_session.required_min_rx,
+               vpp_session.detect_mult, key.conf_key_id,
+               vpp_session.bfd_key_id)
+        self.cli_verify_no_response(cli_add_cmd)
+        # 2nd add should fail
+        self.cli_verify_response(
+            cli_add_cmd,
+            "bfd udp session add: `bfd_add_add_session' API call"
+            " failed, rv=-101:Duplicate BFD object")
+        verify_bfd_session_config(self, vpp_session)
+        mod_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip4, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id,
+            required_min_rx=2 * vpp_session.required_min_rx,
+            desired_min_tx=3 * vpp_session.desired_min_tx,
+            detect_mult=4 * vpp_session.detect_mult)
+        self.cli_verify_no_response(
+            "bfd udp session mod interface %s local-addr %s peer-addr %s "
+            "desired-min-tx %s required-min-rx %s detect-mult %s" %
+            (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+             mod_session.desired_min_tx,
+             mod_session.required_min_rx, mod_session.detect_mult))
+        verify_bfd_session_config(self, mod_session)
+        cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+            "peer-addr %s" % (self.pg0.name,
+                              self.pg0.local_ip4, self.pg0.remote_ip4)
+        self.cli_verify_no_response(cli_del_cmd)
+        # 2nd del is expected to fail
+        self.cli_verify_response(
+            cli_del_cmd,
+            "bfd udp session del: `bfd_udp_del_session' API call"
+            " failed, rv=-102:No such BFD object")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+    def test_add_mod_del_bfd_udp6_auth(self):
+        """ create/modify/delete IPv6 BFD UDP session (authenticated) """
+        key = self.factory.create_random_key(
+            self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        vpp_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key)
+        self.registry.register(vpp_session, self.logger)
+        cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+            "peer-addr %s desired-min-tx %s required-min-rx %s "\
+            "detect-mult %s conf-key-id %s bfd-key-id %s" \
+            % (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+               vpp_session.desired_min_tx, vpp_session.required_min_rx,
+               vpp_session.detect_mult, key.conf_key_id,
+               vpp_session.bfd_key_id)
+        self.cli_verify_no_response(cli_add_cmd)
+        # 2nd add should fail
+        self.cli_verify_response(
+            cli_add_cmd,
+            "bfd udp session add: `bfd_add_add_session' API call"
+            " failed, rv=-101:Duplicate BFD object")
+        verify_bfd_session_config(self, vpp_session)
+        mod_session = VppBFDUDPSession(
+            self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key,
+            bfd_key_id=vpp_session.bfd_key_id,
+            required_min_rx=2 * vpp_session.required_min_rx,
+            desired_min_tx=3 * vpp_session.desired_min_tx,
+            detect_mult=4 * vpp_session.detect_mult)
+        self.cli_verify_no_response(
+            "bfd udp session mod interface %s local-addr %s peer-addr %s "
+            "desired-min-tx %s required-min-rx %s detect-mult %s" %
+            (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+             mod_session.desired_min_tx,
+             mod_session.required_min_rx, mod_session.detect_mult))
+        verify_bfd_session_config(self, mod_session)
+        cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+            "peer-addr %s" % (self.pg0.name,
+                              self.pg0.local_ip6, self.pg0.remote_ip6)
+        self.cli_verify_no_response(cli_del_cmd)
+        # 2nd del is expected to fail
+        self.cli_verify_response(
+            cli_del_cmd,
+            "bfd udp session del: `bfd_udp_del_session' API call"
+            " failed, rv=-102:No such BFD object")
+        self.assertFalse(vpp_session.query_vpp_config())
+
+    def test_auth_on_off(self):
+        """ turn authentication on and off """
+        key = self.factory.create_random_key(
+            self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                        sha1_key=key)
+        session.add_vpp_config()
+        cli_activate = \
+            "bfd udp session auth activate interface %s local-addr %s "\
+            "peer-addr %s conf-key-id %s bfd-key-id %s"\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+               key.conf_key_id, auth_session.bfd_key_id)
+        self.cli_verify_no_response(cli_activate)
+        verify_bfd_session_config(self, auth_session)
+        self.cli_verify_no_response(cli_activate)
+        verify_bfd_session_config(self, auth_session)
+        cli_deactivate = \
+            "bfd udp session auth deactivate interface %s local-addr %s "\
+            "peer-addr %s "\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+        self.cli_verify_no_response(cli_deactivate)
+        verify_bfd_session_config(self, session)
+        self.cli_verify_no_response(cli_deactivate)
+        verify_bfd_session_config(self, session)
+
+    def test_auth_on_off_delayed(self):
+        """ turn authentication on and off (delayed) """
+        key = self.factory.create_random_key(
+            self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+        key.add_vpp_config()
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+                                        sha1_key=key)
+        session.add_vpp_config()
+        cli_activate = \
+            "bfd udp session auth activate interface %s local-addr %s "\
+            "peer-addr %s conf-key-id %s bfd-key-id %s delayed yes"\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+               key.conf_key_id, auth_session.bfd_key_id)
+        self.cli_verify_no_response(cli_activate)
+        verify_bfd_session_config(self, auth_session)
+        self.cli_verify_no_response(cli_activate)
+        verify_bfd_session_config(self, auth_session)
+        cli_deactivate = \
+            "bfd udp session auth deactivate interface %s local-addr %s "\
+            "peer-addr %s delayed yes"\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+        self.cli_verify_no_response(cli_deactivate)
+        verify_bfd_session_config(self, session)
+        self.cli_verify_no_response(cli_deactivate)
+        verify_bfd_session_config(self, session)
+
+    def test_admin_up_down(self):
+        """ put session admin-up and admin-down """
+        session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+        session.add_vpp_config()
+        cli_down = \
+            "bfd udp session set-flags admin down interface %s local-addr %s "\
+            "peer-addr %s "\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+        cli_up = \
+            "bfd udp session set-flags admin up interface %s local-addr %s "\
+            "peer-addr %s "\
+            % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+        self.cli_verify_no_response(cli_down)
+        verify_bfd_session_config(self, session, state=BFDState.admin_down)
+        self.cli_verify_no_response(cli_up)
+        verify_bfd_session_config(self, session, state=BFDState.down)
+
+    def test_set_del_udp_echo_source(self):
+        """ set/del udp echo source """
+        self.create_loopback_interfaces(1)
+        self.loopback0 = self.lo_interfaces[0]
+        self.loopback0.admin_up()
+        self.cli_verify_response("show bfd echo-source",
+                                 "UDP echo source is not set.")
+        cli_set = "bfd udp echo-source set interface %s" % self.loopback0.name
+        self.cli_verify_no_response(cli_set)
+        self.cli_verify_response("show bfd echo-source",
+                                 "UDP echo source is: %s\n"
+                                 "IPv4 address usable as echo source: none\n"
+                                 "IPv6 address usable as echo source: none" %
+                                 self.loopback0.name)
+        self.loopback0.config_ip4()
+        echo_ip4 = str(ipaddress.IPv4Address(int(ipaddress.IPv4Address(
+            self.loopback0.local_ip4)) ^ 1))
+        self.cli_verify_response("show bfd echo-source",
+                                 "UDP echo source is: %s\n"
+                                 "IPv4 address usable as echo source: %s\n"
+                                 "IPv6 address usable as echo source: none" %
+                                 (self.loopback0.name, echo_ip4))
+        echo_ip6 = str(ipaddress.IPv6Address(int(ipaddress.IPv6Address(
+            self.loopback0.local_ip6)) ^ 1))
+        self.loopback0.config_ip6()
+        self.cli_verify_response("show bfd echo-source",
+                                 "UDP echo source is: %s\n"
+                                 "IPv4 address usable as echo source: %s\n"
+                                 "IPv6 address usable as echo source: %s" %
+                                 (self.loopback0.name, echo_ip4, echo_ip6))
+        cli_del = "bfd udp echo-source del"
+        self.cli_verify_no_response(cli_del)
+        self.cli_verify_response("show bfd echo-source",
+                                 "UDP echo source is not set.")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_bier.py b/test/test_bier.py
new file mode 100644
index 0000000..2f649bb
--- /dev/null
+++ b/test/test_bier.py
@@ -0,0 +1,862 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, \
+    VppMplsTable, VppIpMRoute, VppMRoutePath, VppIpTable, \
+    MPLS_LABEL_INVALID, \
+    VppMplsLabel, FibPathProto, FibPathType
+from vpp_bier import BIER_HDR_PAYLOAD, VppBierImp, VppBierDispEntry, \
+    VppBierDispTable, VppBierTable, VppBierTableID, VppBierRoute
+from vpp_udp_encap import VppUdpEncap
+from vpp_papi import VppEnum
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+from scapy.contrib.mpls import MPLS
+from scapy.contrib.bier import BIER, BIERLength, BIFT
+
+NUM_PKTS = 67
+
+
+class TestBFIB(VppTestCase):
+    """ BIER FIB Test Case """
+
+    def test_bfib(self):
+        """ BFIB Unit Tests """
+        error = self.vapi.cli("test bier")
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn("Failed", error)
+
+
+class TestBier(VppTestCase):
+    """ BIER Test Case """
+
+    def setUp(self):
+        super(TestBier, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(3))
+
+        # create the default MPLS table
+        self.tables = []
+        tbl = VppMplsTable(self, 0)
+        tbl.add_vpp_config()
+        self.tables.append(tbl)
+
+        tbl = VppIpTable(self, 10)
+        tbl.add_vpp_config()
+        self.tables.append(tbl)
+
+        # setup both interfaces
+        for i in self.pg_interfaces:
+            if i == self.pg2:
+                i.set_table_ip4(10)
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.enable_mpls()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.disable_mpls()
+            i.unconfig_ip4()
+            i.set_table_ip4(0)
+            i.admin_down()
+        super(TestBier, self).tearDown()
+
+    def bier_midpoint(self, hdr_len_id, n_bytes, max_bp):
+        """BIER midpoint"""
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(0, 0, hdr_len_id)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        #
+        # A packet with no bits set gets dropped
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             MPLS(label=77, ttl=255) /
+             BIER(length=hdr_len_id) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
+             UDP(sport=1234, dport=1234) /
+             Raw())
+        pkts = [p]
+
+        self.send_and_assert_no_replies(self.pg0, pkts,
+                                        "Empty Bit-String")
+
+        #
+        # Add a BIER route for each bit-position in the table via a different
+        # next-hop. Testing whether the BIER walk and replicate forwarding
+        # function works for all bit posisitons.
+        #
+        nh_routes = []
+        bier_routes = []
+        for i in range(1, max_bp+1):
+            nh = "10.0.%d.%d" % (i / 255, i % 255)
+            nh_routes.append(
+                VppIpRoute(self, nh, 32,
+                           [VppRoutePath(self.pg1.remote_ip4,
+                                         self.pg1.sw_if_index,
+                                         labels=[VppMplsLabel(2000+i)])]))
+            nh_routes[-1].add_vpp_config()
+
+            bier_routes.append(
+                VppBierRoute(self, bti, i,
+                             [VppRoutePath(nh, 0xffffffff,
+                                           labels=[VppMplsLabel(100+i)])]))
+            bier_routes[-1].add_vpp_config()
+
+        #
+        # A packet with all bits set gets replicated once for each bit
+        #
+        pkt_sizes = [64, 1400]
+
+        for pkt_size in pkt_sizes:
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 MPLS(label=77, ttl=255) /
+                 BIER(length=hdr_len_id,
+                      BitString=scapy.compat.chb(255)*n_bytes) /
+                 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(scapy.compat.chb(5) * pkt_size))
+            pkts = p
+
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            rx = self.pg1.get_capture(max_bp)
+
+            for rxp in rx:
+                #
+                # The packets are not required to be sent in bit-position order
+                # when we setup the routes above we used the bit-position to
+                # construct the out-label. so use that here to determine the BP
+                #
+                olabel = rxp[MPLS]
+                bp = olabel.label - 2000
+
+                blabel = olabel[MPLS].payload
+                self.assertEqual(blabel.label, 100+bp)
+                self.assertEqual(blabel.ttl, 254)
+
+                bier_hdr = blabel[MPLS].payload
+
+                self.assertEqual(bier_hdr.id, 5)
+                self.assertEqual(bier_hdr.version, 0)
+                self.assertEqual(bier_hdr.length, hdr_len_id)
+                self.assertEqual(bier_hdr.entropy, 0)
+                self.assertEqual(bier_hdr.OAM, 0)
+                self.assertEqual(bier_hdr.RSV, 0)
+                self.assertEqual(bier_hdr.DSCP, 0)
+                self.assertEqual(bier_hdr.Proto, 5)
+
+                # The bit-string should consist only of the BP given by i.
+                byte_array = [b'\0'] * (n_bytes)
+                byte_val = scapy.compat.chb(1 << (bp - 1) % 8)
+                byte_pos = n_bytes - (((bp - 1) // 8) + 1)
+                byte_array[byte_pos] = byte_val
+                bitstring = b''.join(byte_array)
+
+                self.assertEqual(len(bitstring), len(bier_hdr.BitString))
+                self.assertEqual(bitstring, bier_hdr.BitString)
+
+        #
+        # cleanup. not strictly necessary, but it's much quicker this way
+        # because the bier_fib_dump and ip_fib_dump will be empty when the
+        # auto-cleanup kicks in
+        #
+        for br in bier_routes:
+            br.remove_vpp_config()
+        for nhr in nh_routes:
+            nhr.remove_vpp_config()
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_midpoint_1024(self):
+        """BIER midpoint BSL:1024"""
+        self.bier_midpoint(BIERLength.BIER_LEN_1024, 128, 1024)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_midpoint_512(self):
+        """BIER midpoint BSL:512"""
+        self.bier_midpoint(BIERLength.BIER_LEN_512, 64, 512)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_midpoint_256(self):
+        """BIER midpoint BSL:256"""
+        self.bier_midpoint(BIERLength.BIER_LEN_256, 32, 256)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_midpoint_128(self):
+        """BIER midpoint BSL:128"""
+        self.bier_midpoint(BIERLength.BIER_LEN_128, 16, 128)
+
+    def test_bier_midpoint_64(self):
+        """BIER midpoint BSL:64"""
+        self.bier_midpoint(BIERLength.BIER_LEN_64, 8, 64)
+
+    def test_bier_load_balance(self):
+        """BIER load-balance"""
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_64)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        #
+        # packets with varying entropy
+        #
+        pkts = []
+        for ii in range(257):
+            pkts.append((Ether(dst=self.pg0.local_mac,
+                               src=self.pg0.remote_mac) /
+                         MPLS(label=77, ttl=255) /
+                         BIER(length=BIERLength.BIER_LEN_64,
+                              entropy=ii,
+                              BitString=scapy.compat.chb(255)*16) /
+                         IPv6(src=self.pg0.remote_ip6,
+                              dst=self.pg0.remote_ip6) /
+                         UDP(sport=1234, dport=1234) /
+                         Raw()))
+
+        #
+        # 4 next hops
+        #
+        nhs = [{'ip': "10.0.0.1", 'label': 201},
+               {'ip': "10.0.0.2", 'label': 202},
+               {'ip': "10.0.0.3", 'label': 203},
+               {'ip': "10.0.0.4", 'label': 204}]
+
+        for nh in nhs:
+            ipr = VppIpRoute(
+                self, nh['ip'], 32,
+                [VppRoutePath(self.pg1.remote_ip4,
+                              self.pg1.sw_if_index,
+                              labels=[VppMplsLabel(nh['label'])])])
+            ipr.add_vpp_config()
+
+        bier_route = VppBierRoute(
+            self, bti, 1,
+            [VppRoutePath(nhs[0]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)]),
+             VppRoutePath(nhs[1]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)])])
+        bier_route.add_vpp_config()
+
+        rx = self.send_and_expect(self.pg0, pkts, self.pg1)
+
+        #
+        # we should have recieved a packet from each neighbor
+        #
+        for nh in nhs[:2]:
+            self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx))
+
+        #
+        # add the other paths
+        #
+        bier_route.update_paths(
+            [VppRoutePath(nhs[0]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)]),
+             VppRoutePath(nhs[1]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)]),
+             VppRoutePath(nhs[2]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)]),
+             VppRoutePath(nhs[3]['ip'], 0xffffffff,
+                          labels=[VppMplsLabel(101)])])
+
+        rx = self.send_and_expect(self.pg0, pkts, self.pg1)
+
+        for nh in nhs:
+            self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx))
+
+        #
+        # remove first two paths
+        #
+        bier_route.remove_path(VppRoutePath(nhs[0]['ip'], 0xffffffff,
+                                            labels=[VppMplsLabel(101)]))
+        bier_route.remove_path(VppRoutePath(nhs[1]['ip'], 0xffffffff,
+                                            labels=[VppMplsLabel(101)]))
+
+        rx = self.send_and_expect(self.pg0, pkts, self.pg1)
+        for nh in nhs[2:]:
+            self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx))
+
+        #
+        # remove the last of the paths, deleteing the entry
+        #
+        bier_route.remove_all_paths()
+
+        self.send_and_assert_no_replies(self.pg0, pkts)
+
+    def test_bier_head(self):
+        """BIER head"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_256)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        #
+        # 2 bit positions via two next hops
+        #
+        nh1 = "10.0.0.1"
+        nh2 = "10.0.0.2"
+        ip_route_1 = VppIpRoute(self, nh1, 32,
+                                [VppRoutePath(self.pg1.remote_ip4,
+                                              self.pg1.sw_if_index,
+                                              labels=[VppMplsLabel(2001)])])
+        ip_route_2 = VppIpRoute(self, nh2, 32,
+                                [VppRoutePath(self.pg1.remote_ip4,
+                                              self.pg1.sw_if_index,
+                                              labels=[VppMplsLabel(2002)])])
+        ip_route_1.add_vpp_config()
+        ip_route_2.add_vpp_config()
+
+        bier_route_1 = VppBierRoute(self, bti, 1,
+                                    [VppRoutePath(nh1, 0xffffffff,
+                                                  labels=[VppMplsLabel(101)])])
+        bier_route_2 = VppBierRoute(self, bti, 2,
+                                    [VppRoutePath(nh2, 0xffffffff,
+                                                  labels=[VppMplsLabel(102)])])
+        bier_route_1.add_vpp_config()
+        bier_route_2.add_vpp_config()
+
+        #
+        # An imposition object with both bit-positions set
+        #
+        bi = VppBierImp(self, bti, 333, scapy.compat.chb(0x3) * 32)
+        bi.add_vpp_config()
+
+        #
+        # Add a multicast route that will forward into the BIER doamin
+        #
+        route_ing_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg0.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
+                   VppMRoutePath(0xffffffff,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                                 proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                 type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
+                                 bier_imp=bi.bi_index)])
+        route_ing_232_1_1_1.add_vpp_config()
+
+        #
+        # inject an IP packet. We expect it to be BIER encapped and
+        # replicated.
+        #
+        p = (Ether(dst=self.pg0.local_mac,
+                   src=self.pg0.remote_mac) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234))
+
+        self.pg0.add_stream([p])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(2)
+
+        #
+        # Encap Stack is; eth, MPLS, MPLS, BIER
+        #
+        igp_mpls = rx[0][MPLS]
+        self.assertEqual(igp_mpls.label, 2001)
+        self.assertEqual(igp_mpls.ttl, 64)
+        self.assertEqual(igp_mpls.s, 0)
+        bier_mpls = igp_mpls[MPLS].payload
+        self.assertEqual(bier_mpls.label, 101)
+        self.assertEqual(bier_mpls.ttl, 64)
+        self.assertEqual(bier_mpls.s, 1)
+        self.assertEqual(rx[0][BIER].length, 2)
+
+        igp_mpls = rx[1][MPLS]
+        self.assertEqual(igp_mpls.label, 2002)
+        self.assertEqual(igp_mpls.ttl, 64)
+        self.assertEqual(igp_mpls.s, 0)
+        bier_mpls = igp_mpls[MPLS].payload
+        self.assertEqual(bier_mpls.label, 102)
+        self.assertEqual(bier_mpls.ttl, 64)
+        self.assertEqual(bier_mpls.s, 1)
+        self.assertEqual(rx[0][BIER].length, 2)
+
+    def test_bier_tail(self):
+        """BIER Tail"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_256)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        #
+        # disposition table
+        #
+        bdt = VppBierDispTable(self, 8)
+        bdt.add_vpp_config()
+
+        #
+        # BIER route in table that's for-us
+        #
+        bier_route_1 = VppBierRoute(
+            self, bti, 1,
+            [VppRoutePath("0.0.0.0",
+                          0xffffffff,
+                          proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                          nh_table_id=8)])
+        bier_route_1.add_vpp_config()
+
+        #
+        # An entry in the disposition table
+        #
+        bier_de_1 = VppBierDispEntry(self, bdt.id, 99,
+                                     BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
+                                     FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                     "0.0.0.0", 0, rpf_id=8192)
+        bier_de_1.add_vpp_config()
+
+        #
+        # A multicast route to forward post BIER disposition
+        #
+        route_eg_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
+        route_eg_232_1_1_1.add_vpp_config()
+        route_eg_232_1_1_1.update_rpf_id(8192)
+
+        #
+        # A packet with all bits set gets spat out to BP:1
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             MPLS(label=77, ttl=255) /
+             BIER(length=BIERLength.BIER_LEN_256,
+                  BitString=scapy.compat.chb(255)*32,
+                  BFRID=99) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw())
+
+        self.send_and_expect(self.pg0, [p], self.pg1)
+
+        #
+        # A packet that does not match the Disposition entry gets dropped
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             MPLS(label=77, ttl=255) /
+             BIER(length=BIERLength.BIER_LEN_256,
+                  BitString=scapy.compat.chb(255)*32,
+                  BFRID=77) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw())
+        self.send_and_assert_no_replies(self.pg0, p*2,
+                                        "no matching disposition entry")
+
+        #
+        # Add the default route to the disposition table
+        #
+        bier_de_2 = VppBierDispEntry(self, bdt.id, 0,
+                                     BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
+                                     FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                     "0.0.0.0", 0, rpf_id=8192)
+        bier_de_2.add_vpp_config()
+
+        #
+        # now the previous packet is forwarded
+        #
+        self.send_and_expect(self.pg0, [p], self.pg1)
+
+        #
+        # A multicast route to forward post BIER disposition that needs
+        # a check against sending back into the BIER core
+        #
+        bi = VppBierImp(self, bti, 333, scapy.compat.chb(0x3) * 32)
+        bi.add_vpp_config()
+
+        route_eg_232_1_1_2 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.2", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(0xffffffff,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                                 proto=DpoProto.DPO_PROTO_BIER,
+                                 type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
+                                 bier_imp=bi.bi_index),
+                   VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
+        route_eg_232_1_1_2.add_vpp_config()
+        route_eg_232_1_1_2.update_rpf_id(8192)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             MPLS(label=77, ttl=255) /
+             BIER(length=BIERLength.BIER_LEN_256,
+                  BitString=scapy.compat.chb(255)*32,
+                  BFRID=77) /
+             IP(src="1.1.1.1", dst="232.1.1.2") /
+             UDP(sport=1234, dport=1234) /
+             Raw())
+        self.send_and_expect(self.pg0, [p], self.pg1)
+
+    def bier_e2e(self, hdr_len_id, n_bytes, max_bp):
+        """ BIER end-to-end"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(0, 0, hdr_len_id)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        lowest = [b'\0'] * (n_bytes)
+        lowest[-1] = scapy.compat.chb(1)
+        highest = [b'\0'] * (n_bytes)
+        highest[0] = scapy.compat.chb(128)
+
+        #
+        # Impostion Sets bit strings
+        #
+        bi_low = VppBierImp(self, bti, 333, lowest)
+        bi_low.add_vpp_config()
+        bi_high = VppBierImp(self, bti, 334, highest)
+        bi_high.add_vpp_config()
+
+        #
+        # Add a multicast route that will forward into the BIER doamin
+        #
+        route_ing_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg0.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
+                   VppMRoutePath(0xffffffff,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                                 proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                 type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
+                                 bier_imp=bi_low.bi_index)])
+        route_ing_232_1_1_1.add_vpp_config()
+        route_ing_232_1_1_2 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.2", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg0.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
+                   VppMRoutePath(0xffffffff,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                                 proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                 type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
+                                 bier_imp=bi_high.bi_index)])
+        route_ing_232_1_1_2.add_vpp_config()
+
+        #
+        # disposition table 8
+        #
+        bdt = VppBierDispTable(self, 8)
+        bdt.add_vpp_config()
+
+        #
+        # BIER routes in table that are for-us, resolving through
+        # disp table 8.
+        #
+        bier_route_1 = VppBierRoute(
+            self, bti, 1,
+            [VppRoutePath("0.0.0.0",
+                          0xffffffff,
+                          proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                          nh_table_id=8)])
+        bier_route_1.add_vpp_config()
+        bier_route_max = VppBierRoute(
+            self, bti, max_bp,
+            [VppRoutePath("0.0.0.0",
+                          0xffffffff,
+                          proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                          nh_table_id=8)])
+        bier_route_max.add_vpp_config()
+
+        #
+        # An entry in the disposition table for sender 333
+        #  lookup in VRF 10
+        #
+        bier_de_1 = VppBierDispEntry(self, bdt.id, 333,
+                                     BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
+                                     FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                     "0.0.0.0", 10, rpf_id=8192)
+        bier_de_1.add_vpp_config()
+        bier_de_1 = VppBierDispEntry(self, bdt.id, 334,
+                                     BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
+                                     FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                     "0.0.0.0", 10, rpf_id=8193)
+        bier_de_1.add_vpp_config()
+
+        #
+        # Add a multicast routes that will forward the traffic
+        # post-disposition
+        #
+        route_eg_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            table_id=10,
+            paths=[VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
+        route_eg_232_1_1_1.add_vpp_config()
+        route_eg_232_1_1_1.update_rpf_id(8192)
+        route_eg_232_1_1_2 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.2", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            table_id=10,
+            paths=[VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
+        route_eg_232_1_1_2.add_vpp_config()
+        route_eg_232_1_1_2.update_rpf_id(8193)
+
+        #
+        # inject a packet in VRF-0. We expect it to be BIER encapped,
+        # replicated, then hit the disposition and be forwarded
+        # out of VRF 10, i.e. on pg1
+        #
+        p = (Ether(dst=self.pg0.local_mac,
+                   src=self.pg0.remote_mac) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(scapy.compat.chb(5) * 32))
+
+        rx = self.send_and_expect(self.pg0, p*NUM_PKTS, self.pg1)
+
+        self.assertEqual(rx[0][IP].src, "1.1.1.1")
+        self.assertEqual(rx[0][IP].dst, "232.1.1.1")
+
+        p = (Ether(dst=self.pg0.local_mac,
+                   src=self.pg0.remote_mac) /
+             IP(src="1.1.1.1", dst="232.1.1.2") /
+             UDP(sport=1234, dport=1234) /
+             Raw(scapy.compat.chb(5) * 512))
+
+        rx = self.send_and_expect(self.pg0, p*NUM_PKTS, self.pg1)
+        self.assertEqual(rx[0][IP].src, "1.1.1.1")
+        self.assertEqual(rx[0][IP].dst, "232.1.1.2")
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_e2e_1024(self):
+        """ BIER end-to-end BSL:1024"""
+        self.bier_e2e(BIERLength.BIER_LEN_1024, 128, 1024)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_e2e_512(self):
+        """ BIER end-to-end BSL:512"""
+        self.bier_e2e(BIERLength.BIER_LEN_512, 64, 512)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_e2e_256(self):
+        """ BIER end-to-end BSL:256"""
+        self.bier_e2e(BIERLength.BIER_LEN_256, 32, 256)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_bier_e2e_128(self):
+        """ BIER end-to-end BSL:128"""
+        self.bier_e2e(BIERLength.BIER_LEN_128, 16, 128)
+
+    def test_bier_e2e_64(self):
+        """ BIER end-to-end BSL:64"""
+        self.bier_e2e(BIERLength.BIER_LEN_64, 8, 64)
+
+    def test_bier_head_o_udp(self):
+        """BIER head over UDP"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+        #
+        # Add a BIER table for sub-domain 1, set 0, and BSL 256
+        #
+        bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256)
+        bt = VppBierTable(self, bti, 77)
+        bt.add_vpp_config()
+
+        #
+        # 1 bit positions via 1 next hops
+        #
+        nh1 = "10.0.0.1"
+        ip_route = VppIpRoute(self, nh1, 32,
+                              [VppRoutePath(self.pg1.remote_ip4,
+                                            self.pg1.sw_if_index,
+                                            labels=[VppMplsLabel(2001)])])
+        ip_route.add_vpp_config()
+
+        udp_encap = VppUdpEncap(self,
+                                self.pg0.local_ip4,
+                                nh1,
+                                330, 8138)
+        udp_encap.add_vpp_config()
+
+        bier_route = VppBierRoute(
+            self, bti, 1,
+            [VppRoutePath("0.0.0.0",
+                          0xFFFFFFFF,
+                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
+                          next_hop_id=udp_encap.id)])
+        bier_route.add_vpp_config()
+
+        #
+        # An 2 imposition objects with all bit-positions set
+        # only use the second, but creating 2 tests with a non-zero
+        # value index in the route add
+        #
+        bi = VppBierImp(self, bti, 333, scapy.compat.chb(0xff) * 32)
+        bi.add_vpp_config()
+        bi2 = VppBierImp(self, bti, 334, scapy.compat.chb(0xff) * 32)
+        bi2.add_vpp_config()
+
+        #
+        # Add a multicast route that will forward into the BIER doamin
+        #
+        route_ing_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg0.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
+                   VppMRoutePath(0xffffffff,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                                 proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                 type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
+                                 bier_imp=bi2.bi_index)])
+        route_ing_232_1_1_1.add_vpp_config()
+
+        #
+        # inject a packet an IP. We expect it to be BIER and UDP encapped,
+        #
+        p = (Ether(dst=self.pg0.local_mac,
+                   src=self.pg0.remote_mac) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234))
+
+        self.pg0.add_stream([p])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        #
+        # Encap Stack is, eth, IP, UDP, BIFT, BIER
+        #
+        self.assertEqual(rx[0][IP].src, self.pg0.local_ip4)
+        self.assertEqual(rx[0][IP].dst, nh1)
+        self.assertEqual(rx[0][UDP].sport, 330)
+        self.assertEqual(rx[0][UDP].dport, 8138)
+        self.assertEqual(rx[0][BIFT].bsl, BIERLength.BIER_LEN_256)
+        self.assertEqual(rx[0][BIFT].sd, 1)
+        self.assertEqual(rx[0][BIFT].set, 0)
+        self.assertEqual(rx[0][BIFT].ttl, 64)
+        self.assertEqual(rx[0][BIER].length, 2)
+
+    def test_bier_tail_o_udp(self):
+        """BIER Tail over UDP"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+        #
+        # Add a BIER table for sub-domain 0, set 0, and BSL 256
+        #
+        bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256)
+        bt = VppBierTable(self, bti, MPLS_LABEL_INVALID)
+        bt.add_vpp_config()
+
+        #
+        # disposition table
+        #
+        bdt = VppBierDispTable(self, 8)
+        bdt.add_vpp_config()
+
+        #
+        # BIER route in table that's for-us
+        #
+        bier_route_1 = VppBierRoute(
+            self, bti, 1,
+            [VppRoutePath("0.0.0.0",
+                          0xffffffff,
+                          proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                          nh_table_id=8)])
+        bier_route_1.add_vpp_config()
+
+        #
+        # An entry in the disposition table
+        #
+        bier_de_1 = VppBierDispEntry(self, bdt.id, 99,
+                                     BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
+                                     FibPathProto.FIB_PATH_NH_PROTO_BIER,
+                                     "0.0.0.0", 0, rpf_id=8192)
+        bier_de_1.add_vpp_config()
+
+        #
+        # A multicast route to forward post BIER disposition
+        #
+        route_eg_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            paths=[VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
+        route_eg_232_1_1_1.add_vpp_config()
+        route_eg_232_1_1_1.update_rpf_id(8192)
+
+        #
+        # A packet with all bits set gets spat out to BP:1
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+             UDP(sport=333, dport=8138) /
+             BIFT(sd=1, set=0, bsl=2, ttl=255) /
+             BIER(length=BIERLength.BIER_LEN_256,
+                  BitString=scapy.compat.chb(255)*32,
+                  BFRID=99) /
+             IP(src="1.1.1.1", dst="232.1.1.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw())
+
+        rx = self.send_and_expect(self.pg0, [p], self.pg1)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_bihash.py b/test/test_bihash.py
new file mode 100644
index 0000000..2949d66
--- /dev/null
+++ b/test/test_bihash.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_gcov_tests
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+
+
+class TestBihash(VppTestCase):
+    """ Bihash Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        # increase vapi timeout, to avoid spurious "test bihash ..."
+        # failures reported on aarch64 w/ test-debug
+        cls.vapi_response_timeout = 20
+        super(TestBihash, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestBihash, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestBihash, self).setUp()
+
+    def tearDown(self):
+        super(TestBihash, self).tearDown()
+
+    def test_bihash_unittest(self):
+        """ Bihash Add/Del Test """
+        error = self.vapi.cli("test bihash careful 0 verbose 0")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+    def test_bihash_thread(self):
+        """ Bihash Thread Test """
+
+        error = self.vapi.cli("test bihash threads 2 nbuckets" +
+                              " 64000 careful 0 verbose 0")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+    def test_bihash_vec64(self):
+        """ Bihash vec64 Test """
+
+        error = self.vapi.cli("test bihash vec64")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+    @unittest.skipUnless(running_gcov_tests, "part of code coverage tests")
+    def test_bihash_coverage(self):
+        """ Improve Code Coverage """
+
+        error = self.vapi.cli("test bihash nitems 10 ncycles 3" +
+                              "search 2 careful 1 verbose 2 non-random-keys")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+        error = self.vapi.cli("test bihash nitems 10 nbuckets 1 ncycles 3" +
+                              "search 2 careful 1 verbose 2 non-random-keys")
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_bond.py b/test/test_bond.py
new file mode 100644
index 0000000..5df86ae
--- /dev/null
+++ b/test/test_bond.py
@@ -0,0 +1,321 @@
+#!/usr/bin/env python3
+
+import socket
+import unittest
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+
+from framework import VppTestCase, VppTestRunner
+from vpp_bond_interface import VppBondInterface
+from vpp_papi import MACAddress, VppEnum
+
+
+class TestBondInterface(VppTestCase):
+    """Bond Test Case
+
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestBondInterface, cls).setUpClass()
+        # Test variables
+        cls.pkts_per_burst = 257    # Number of packets per burst
+        # create 3 pg interfaces
+        cls.create_pg_interfaces(range(4))
+
+        # packet sizes
+        cls.pg_if_packet_sizes = [64, 512, 1518]  # , 9018]
+
+        # setup all interfaces
+        for i in cls.pg_interfaces:
+            i.admin_up()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestBondInterface, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestBondInterface, self).setUp()
+
+    def tearDown(self):
+        super(TestBondInterface, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.ppcli("show interface"))
+
+    def test_bond_traffic(self):
+        """ Bond traffic test """
+
+        # topology
+        #
+        # RX->              TX->
+        #
+        # pg2 ------+        +------pg0 (member)
+        #           |        |
+        #          BondEthernet0 (10.10.10.1)
+        #           |        |
+        # pg3 ------+        +------pg1 (memberx)
+        #
+
+        # create interface (BondEthernet0)
+        #        self.logger.info("create bond")
+        bond0_mac = "02:fe:38:30:59:3c"
+        mac = MACAddress(bond0_mac).packed
+        bond0 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_XOR,
+            lb=VppEnum.vl_api_bond_lb_algo_t.BOND_API_LB_ALGO_L34,
+            numa_only=0,
+            use_custom_mac=1,
+            mac_address=mac)
+        bond0.add_vpp_config()
+        bond0.admin_up()
+        self.vapi.sw_interface_add_del_address(
+            sw_if_index=bond0.sw_if_index,
+            prefix="10.10.10.1/24")
+
+        self.pg2.config_ip4()
+        self.pg2.resolve_arp()
+        self.pg3.config_ip4()
+        self.pg3.resolve_arp()
+
+        self.logger.info(self.vapi.cli("show interface"))
+        self.logger.info(self.vapi.cli("show interface address"))
+        self.logger.info(self.vapi.cli("show ip neighbors"))
+
+        # add member pg0 and pg1 to BondEthernet0
+        self.logger.info("bond add member interface pg0 to BondEthernet0")
+        bond0.add_member_vpp_bond_interface(sw_if_index=self.pg0.sw_if_index)
+        self.logger.info("bond add_member interface pg1 to BondEthernet0")
+        bond0.add_member_vpp_bond_interface(sw_if_index=self.pg1.sw_if_index)
+
+        # verify both members in BondEthernet0
+        if_dump = self.vapi.sw_member_interface_dump(bond0.sw_if_index)
+        self.assertTrue(self.pg0.is_interface_config_in_dump(if_dump))
+        self.assertTrue(self.pg1.is_interface_config_in_dump(if_dump))
+
+        # generate a packet from pg2 -> BondEthernet0 -> pg1
+        # BondEthernet0 TX hashes this packet to pg1
+        p2 = (Ether(src=bond0_mac, dst=self.pg2.local_mac) /
+              IP(src=self.pg2.local_ip4, dst="10.10.10.12") /
+              UDP(sport=1235, dport=1235) /
+              Raw(b'\xa5' * 100))
+        self.pg2.add_stream(p2)
+
+        # generate a packet from pg3 -> BondEthernet0 -> pg0
+        # BondEthernet0 TX hashes this packet to pg0
+        # notice the ip address and ports are different than p2 packet
+        p3 = (Ether(src=bond0_mac, dst=self.pg3.local_mac) /
+              IP(src=self.pg3.local_ip4, dst="10.10.10.11") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))
+        self.pg3.add_stream(p3)
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # set up the static arp entries pointing to the BondEthernet0 interface
+        # so that it does not try to resolve the ip address
+        self.logger.info(self.vapi.cli(
+            "set ip neighbor static BondEthernet0 10.10.10.12 abcd.abcd.0002"))
+        self.logger.info(self.vapi.cli(
+            "set ip neighbor static BondEthernet0 10.10.10.11 abcd.abcd.0004"))
+
+        # clear the interface counters
+        self.logger.info(self.vapi.cli("clear interfaces"))
+
+        self.pg_start()
+
+        self.logger.info("check the interface counters")
+
+        # verify counters
+
+        # BondEthernet0 tx bytes = 284
+        intfs = self.vapi.cli("show interface BondEthernet0").split("\n")
+        found = 0
+        for intf in intfs:
+            if "tx bytes" in intf and "284" in intf:
+                found = 1
+        self.assertEqual(found, 1)
+
+        # BondEthernet0 tx bytes = 284
+        intfs = self.vapi.cli("show interface BondEthernet0").split("\n")
+        found = 0
+        for intf in intfs:
+            if "tx bytes" in intf and "284" in intf:
+                found = 1
+        self.assertEqual(found, 1)
+
+        # pg2 rx bytes = 142
+        intfs = self.vapi.cli("show interface pg2").split("\n")
+        found = 0
+        for intf in intfs:
+            if "rx bytes" in intf and "142" in intf:
+                found = 1
+        self.assertEqual(found, 1)
+
+        # pg3 rx bytes = 142
+        intfs = self.vapi.cli("show interface pg3").split("\n")
+        found = 0
+        for intf in intfs:
+            if "rx bytes" in intf and "142" in intf:
+                found = 1
+        self.assertEqual(found, 1)
+
+        bond0.remove_vpp_config()
+
+    def test_bond_add_member(self):
+        """ Bond add_member/detach member test """
+
+        # create interface (BondEthernet0) and set bond mode to LACP
+        self.logger.info("create bond")
+        bond0 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP,
+            enable_gso=0)
+        bond0.add_vpp_config()
+        bond0.admin_up()
+
+        # verify that interfaces can be added as_member and detached two times
+        for i in range(2):
+            # verify pg0 and pg1 not in BondEthernet0
+            if_dump = self.vapi.sw_member_interface_dump(bond0.sw_if_index)
+            self.assertFalse(self.pg0.is_interface_config_in_dump(if_dump))
+            self.assertFalse(self.pg1.is_interface_config_in_dump(if_dump))
+
+            # add_member pg0 and pg1 to BondEthernet0
+            self.logger.info("bond add_member interface pg0 to BondEthernet0")
+            bond0.add_member_vpp_bond_interface(
+                sw_if_index=self.pg0.sw_if_index,
+                is_passive=0,
+                is_long_timeout=0)
+
+            self.logger.info("bond add_member interface pg1 to BondEthernet0")
+            bond0.add_member_vpp_bond_interface(
+                sw_if_index=self.pg1.sw_if_index,
+                is_passive=0,
+                is_long_timeout=0)
+            # verify both members in BondEthernet0
+            if_dump = self.vapi.sw_member_interface_dump(bond0.sw_if_index)
+            self.assertTrue(self.pg0.is_interface_config_in_dump(if_dump))
+            self.assertTrue(self.pg1.is_interface_config_in_dump(if_dump))
+
+            # detach interface pg0
+            self.logger.info("detach interface pg0")
+            bond0.detach_vpp_bond_interface(sw_if_index=self.pg0.sw_if_index)
+
+            # verify pg0 is not in BondEthernet0, but pg1 is
+            if_dump = self.vapi.sw_member_interface_dump(bond0.sw_if_index)
+            self.assertFalse(self.pg0.is_interface_config_in_dump(if_dump))
+            self.assertTrue(self.pg1.is_interface_config_in_dump(if_dump))
+
+            # detach interface pg1
+            self.logger.info("detach interface pg1")
+            bond0.detach_vpp_bond_interface(sw_if_index=self.pg1.sw_if_index)
+
+            # verify pg0 and pg1 not in BondEthernet0
+            if_dump = self.vapi.sw_member_interface_dump(bond0.sw_if_index)
+            self.assertFalse(self.pg0.is_interface_config_in_dump(if_dump))
+            self.assertFalse(self.pg1.is_interface_config_in_dump(if_dump))
+
+        bond0.remove_vpp_config()
+
+    def test_bond(self):
+        """ Bond add/delete interface test """
+        self.logger.info("Bond add interfaces")
+
+        # create interface 1 (BondEthernet0)
+        bond0 = VppBondInterface(
+            self, mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP)
+        bond0.add_vpp_config()
+        bond0.admin_up()
+
+        # create interface 2 (BondEthernet1)
+        bond1 = VppBondInterface(
+            self, mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_XOR)
+        bond1.add_vpp_config()
+        bond1.admin_up()
+
+        # verify both interfaces in the show
+        ifs = self.vapi.cli("show interface")
+        self.assertIn('BondEthernet0', ifs)
+        self.assertIn('BondEthernet1', ifs)
+
+        # verify they are in the dump also
+        if_dump = self.vapi.sw_bond_interface_dump(sw_if_index=0xFFFFFFFF)
+        self.assertTrue(bond0.is_interface_config_in_dump(if_dump))
+        self.assertTrue(bond1.is_interface_config_in_dump(if_dump))
+
+        # delete BondEthernet1
+        self.logger.info("Deleting BondEthernet1")
+        bond1.remove_vpp_config()
+
+        self.logger.info("Verifying BondEthernet1 is deleted")
+
+        ifs = self.vapi.cli("show interface")
+        # verify BondEthernet0 still in the show
+        self.assertIn('BondEthernet0', ifs)
+
+        # verify BondEthernet1 not in the show
+        self.assertNotIn('BondEthernet1', ifs)
+
+        # verify BondEthernet1 is not in the dump
+        if_dump = self.vapi.sw_bond_interface_dump(sw_if_index=0xFFFFFFFF)
+        self.assertFalse(bond1.is_interface_config_in_dump(if_dump))
+
+        # verify BondEthernet0 is still in the dump
+        self.assertTrue(bond0.is_interface_config_in_dump(if_dump))
+
+        # delete BondEthernet0
+        self.logger.info("Deleting BondEthernet0")
+        bond0.remove_vpp_config()
+
+        self.logger.info("Verifying BondEthernet0 is deleted")
+
+        # verify BondEthernet0 not in the show
+        ifs = self.vapi.cli("show interface")
+        self.assertNotIn('BondEthernet0', ifs)
+
+        # verify BondEthernet0 is not in the dump
+        if_dump = self.vapi.sw_bond_interface_dump(
+            sw_if_index=bond0.sw_if_index)
+        self.assertFalse(bond0.is_interface_config_in_dump(if_dump))
+
+    def test_bond_link(self):
+        """ Bond hw interface link state test """
+
+        # for convenience
+        bond_modes = VppEnum.vl_api_bond_mode_t
+        intf_flags = VppEnum.vl_api_if_status_flags_t
+
+        # create interface 1 (BondEthernet0)
+        self.logger.info("Create bond interface")
+        # use round-robin mode to avoid negotiation required by LACP
+        bond0 = VppBondInterface(self,
+                                 mode=bond_modes.BOND_API_MODE_ROUND_ROBIN)
+        bond0.add_vpp_config()
+
+        # set bond admin up.
+        self.logger.info("set interface BondEthernet0 admin up")
+        bond0.admin_up()
+        # confirm link up
+        bond0.assert_interface_state(intf_flags.IF_STATUS_API_FLAG_ADMIN_UP,
+                                     intf_flags.IF_STATUS_API_FLAG_LINK_UP)
+
+        # toggle bond admin state
+        self.logger.info("toggle interface BondEthernet0")
+        bond0.admin_down()
+        bond0.admin_up()
+
+        # confirm link is still up
+        bond0.assert_interface_state(intf_flags.IF_STATUS_API_FLAG_ADMIN_UP,
+                                     intf_flags.IF_STATUS_API_FLAG_LINK_UP)
+
+        # delete BondEthernet0
+        self.logger.info("Deleting BondEthernet0")
+        bond0.remove_vpp_config()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_buffers.py b/test/test_buffers.py
new file mode 100644
index 0000000..f50f05c
--- /dev/null
+++ b/test/test_buffers.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+from framework import VppTestCase
+
+
+class TestBuffers(VppTestCase):
+    """ Buffer C Unit Tests """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestBuffers, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestBuffers, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestBuffers, self).setUp()
+
+    def tearDown(self):
+        super(TestBuffers, self).tearDown()
+
+    def test_linearize(self):
+        """ Chained Buffer Linearization """
+        error = self.vapi.cli("test chained-buffer-linearization")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
diff --git a/test/test_cdp.py b/test/test_cdp.py
new file mode 100644
index 0000000..46751e8
--- /dev/null
+++ b/test/test_cdp.py
@@ -0,0 +1,155 @@
+#!/usr/bin/env python3
+""" CDP tests """
+
+from scapy.packet import Packet
+from scapy.all import ShortField, StrField
+from scapy.layers.l2 import Dot3, LLC, SNAP
+from scapy.contrib.cdp import CDPMsgDeviceID, CDPMsgSoftwareVersion, \
+        CDPMsgPlatform, CDPMsgPortID, CDPv2_HDR
+
+from framework import VppTestCase
+from scapy.all import raw
+from re import compile
+from time import sleep
+from util import ppp
+import platform
+import sys
+import unittest
+
+
+""" TestCDP is a subclass of  VPPTestCase classes.
+
+CDP test.
+
+"""
+
+
+class CustomTLV(Packet):
+    """ Custom TLV protocol layer for scapy """
+
+    fields_desc = [
+        ShortField("type", 0),
+        ShortField("length", 4),
+        StrField("value", "")
+
+    ]
+
+
+class TestCDP(VppTestCase):
+    """ CDP Test Case """
+
+    nen_ptr = compile(r"not enabled")
+    cdp_ptr = compile(r"^([-\.\w]+)\s+([-\.\w]+)\s+([-\.\w]+)\s+([-\.\w]+)$")
+    err_ptr = compile(r"^([\d]+)\s+([-\w]+)\s+([ -\.\w)(]+)$")
+
+    @property
+    def device_id(self):
+        return platform.node()
+
+    @property
+    def version(self):
+        return platform.release()
+
+    @property
+    def port_id(self):
+        return self.interface.name
+
+    @property
+    def platform(self):
+        return platform.system()
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCDP, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(1))
+            cls.interface = cls.pg_interfaces[0]
+
+            cls.interface.admin_up()
+            cls.interface.config_ip4()
+            cls.interface.resolve_arp()
+
+        except Exception:
+            super(TestCDP, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCDP, cls).tearDownClass()
+
+    def test_enable_cdp(self):
+        self.logger.info(self.vapi.cdp_enable_disable(enable_disable=1))
+        ret = self.vapi.cli("show cdp")
+        self.logger.info(ret)
+        not_enabled = self.nen_ptr.search(ret)
+        self.assertFalse(not_enabled, "CDP isn't enabled")
+
+    def test_send_cdp_packet(self):
+        self.logger.info(self.vapi.cdp_enable_disable(enable_disable=1))
+        self.send_packet(self.create_packet())
+
+        neighbors = list(self.show_cdp())
+        self.assertTrue(neighbors, "CDP didn't register neighbor")
+
+        port, system = neighbors[0]
+        length = min(len(system), len(self.device_id))
+
+        self.assert_equal(port, self.port_id, "CDP received invalid port id")
+        self.assert_equal(system[:length], self.device_id[:length],
+                          "CDP received invalid device id")
+
+    def test_cdp_underflow_tlv(self):
+        self.send_bad_packet(3, ".")
+
+    def test_cdp_overflow_tlv(self):
+        self.send_bad_packet(8, ".")
+
+    def send_bad_packet(self, l, v):
+        self.logger.info(self.vapi.cdp_enable_disable(enable_disable=1))
+        self.send_packet(self.create_bad_packet(l, v))
+
+        err = self.statistics.get_err_counter(
+            '/err/cdp-input/cdp packets with bad TLVs')
+        self.assertTrue(err >= 1, "CDP didn't drop bad packet")
+
+    def send_packet(self, packet):
+        self.logger.debug(ppp("Sending packet:", packet))
+        self.interface.add_stream(packet)
+        self.pg_start()
+
+    def create_base_packet(self):
+        packet = (Dot3(src=self.interface.remote_mac,
+                       dst="01:00:0c:cc:cc:cc") /
+                  LLC(dsap=0xaa, ssap=0xaa, ctrl=0x03) /
+                  SNAP()/CDPv2_HDR())
+        return packet
+
+    def create_packet(self):
+        packet = (self.create_base_packet() /
+                  CDPMsgDeviceID(val=self.device_id) /
+                  CDPMsgSoftwareVersion(val=self.version) /
+                  CDPMsgPortID(iface=self.port_id) /
+                  CDPMsgPlatform(val=self.platform))
+        return packet
+
+    def create_bad_packet(self, tl=4, tv=""):
+        packet = (self.create_base_packet() /
+                  CustomTLV(type=1,
+                            length=tl,
+                            value=tv))
+        return packet
+
+    def process_cli(self, exp, ptr):
+        for line in self.vapi.cli(exp).split('\n')[1:]:
+            m = ptr.match(line.strip())
+            if m:
+                yield m.groups()
+
+    def show_cdp(self):
+        for pack in self.process_cli("show cdp", self.cdp_ptr):
+            try:
+                port, system, _, _ = pack
+            except ValueError:
+                pass
+            else:
+                yield port, system
diff --git a/test/test_classifier.py b/test/test_classifier.py
new file mode 100644
index 0000000..11c0985
--- /dev/null
+++ b/test/test_classifier.py
@@ -0,0 +1,569 @@
+#!/usr/bin/env python3
+
+import binascii
+import socket
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP, TCP
+from util import ppp
+from template_classifier import TestClassifier
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+
+# Tests split to different test case classes because of issue reported in
+# ticket VPP-1336
+class TestClassifierIP(TestClassifier):
+    """ Classifier IP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierIP, cls).tearDownClass()
+
+    def test_iacl_src_ip(self):
+        """ Source IP iACL test
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with source IP address.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with source IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip_src'
+        self.create_classify_table(key, self.build_ip_mask(src_ip='ffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(src_ip=self.pg0.remote_ip4))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_dst_ip(self):
+        """ Destination IP iACL test
+
+        Test scenario for basic IP ACL with destination IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with destination IP address.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with destination IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip_dst'
+        self.create_classify_table(key, self.build_ip_mask(dst_ip='ffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(dst_ip=self.pg1.remote_ip4))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_src_dst_ip(self):
+        """ Source and destination IP iACL test
+
+        Test scenario for basic IP ACL with source and destination IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with source and destination IP addresses.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with source and destination IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip'
+        self.create_classify_table(
+            key, self.build_ip_mask(src_ip='ffffffff', dst_ip='ffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(src_ip=self.pg0.remote_ip4,
+                                dst_ip=self.pg1.remote_ip4))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierUDP(TestClassifier):
+    """ Classifier UDP proto Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierUDP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierUDP, cls).tearDownClass()
+
+    def test_iacl_proto_udp(self):
+        """ UDP protocol iACL test
+
+        Test scenario for basic protocol ACL with UDP protocol
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP protocol
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_udp'
+        self.create_classify_table(key, self.build_ip_mask(proto='ff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_UDP))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_sport(self):
+        """ UDP source port iACL test
+
+        Test scenario for basic protocol ACL with UDP and sport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined sport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and sport
+        sport = 38
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=sport, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_udp_sport'
+        self.create_classify_table(
+            key, self.build_ip_mask(proto='ff', src_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_UDP, src_port=sport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_dport(self):
+        """ UDP destination port iACL test
+
+        Test scenario for basic protocol ACL with UDP and dport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and dport
+        dport = 427
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=1234, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_udp_dport'
+        self.create_classify_table(
+            key, self.build_ip_mask(proto='ff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_UDP, dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_sport_dport(self):
+        """ UDP source and destination ports iACL test
+
+        Test scenario for basic protocol ACL with UDP and sport and dport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined sport and dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and sport and dport
+        sport = 13720
+        dport = 9080
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=sport, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_udp_ports'
+        self.create_classify_table(
+            key,
+            self.build_ip_mask(proto='ff', src_port='ffff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_UDP, src_port=sport,
+                                dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierTCP(TestClassifier):
+    """ Classifier TCP proto Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierTCP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierTCP, cls).tearDownClass()
+
+    def test_iacl_proto_tcp(self):
+        """ TCP protocol iACL test
+
+        Test scenario for basic protocol ACL with TCP protocol
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP protocol
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=1234, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_tcp'
+        self.create_classify_table(key, self.build_ip_mask(proto='ff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_TCP))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_sport(self):
+        """ TCP source port iACL test
+
+        Test scenario for basic protocol ACL with TCP and sport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined sport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and sport
+        sport = 38
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=sport, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_tcp_sport'
+        self.create_classify_table(
+            key, self.build_ip_mask(proto='ff', src_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_TCP, src_port=sport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_dport(self):
+        """ TCP destination port iACL test
+
+        Test scenario for basic protocol ACL with TCP and dport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and dport
+        dport = 427
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=1234, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_tcp_sport'
+        self.create_classify_table(
+            key, self.build_ip_mask(proto='ff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_TCP, dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_sport_dport(self):
+        """ TCP source and destination ports iACL test
+
+        Test scenario for basic protocol ACL with TCP and sport and dport
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined sport and dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and sport and dport
+        sport = 13720
+        dport = 9080
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=sport, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'proto_tcp_ports'
+        self.create_classify_table(
+            key,
+            self.build_ip_mask(proto='ff', src_port='ffff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(proto=socket.IPPROTO_TCP, src_port=sport,
+                                dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierIPOut(TestClassifier):
+    """ Classifier output IP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIPOut, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierIPOut, cls).tearDownClass()
+
+    def test_acl_ip_out(self):
+        """ Output IP ACL test
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg1 -> pg0 interface.
+            - Create ACL with source IP address.
+            - Send and verify received packets on pg0 interface.
+        """
+
+        # Basic oACL testing with source IP
+        pkts = self.create_stream(self.pg1, self.pg0, self.pg_if_packet_sizes)
+        self.pg1.add_stream(pkts)
+
+        key = 'ip_out'
+        self.create_classify_table(
+            key, self.build_ip_mask(src_ip='ffffffff'), data_offset=0)
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(src_ip=self.pg1.remote_ip4))
+        self.output_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg0.get_capture(len(pkts))
+        self.verify_capture(self.pg0, pkts)
+        self.pg1.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierMAC(TestClassifier):
+    """ Classifier MAC Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierMAC, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierMAC, cls).tearDownClass()
+
+    def test_acl_mac(self):
+        """ MAC ACL test
+
+        Test scenario for basic MAC ACL with source MAC
+            - Create IPv4 stream for pg0 -> pg2 interface.
+            - Create ACL with source MAC address.
+            - Send and verify received packets on pg2 interface.
+        """
+
+        # Basic iACL testing with source MAC
+        pkts = self.create_stream(self.pg0, self.pg2, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'mac'
+        self.create_classify_table(
+            key, self.build_mac_mask(src_mac='ffffffffffff'), data_offset=-14)
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_mac_match(src_mac=self.pg0.remote_mac))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg2.get_capture(len(pkts))
+        self.verify_capture(self.pg2, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg1.assert_nothing_captured(remark="packets forwarded")
+        self.pg3.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierPBR(TestClassifier):
+    """ Classifier PBR Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierPBR, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierPBR, cls).tearDownClass()
+
+    def test_acl_pbr(self):
+        """ IP PBR test
+
+        Test scenario for PBR with source IP
+            - Create IPv4 stream for pg0 -> pg3 interface.
+            - Configure PBR fib entry for packet forwarding.
+            - Send and verify received packets on pg3 interface.
+        """
+
+        # PBR testing with source IP
+        pkts = self.create_stream(self.pg0, self.pg3, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'pbr'
+        self.create_classify_table(key, self.build_ip_mask(src_ip='ffffffff'))
+        pbr_option = 1
+        # this will create the VRF/table in which we will insert the route
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(src_ip=self.pg0.remote_ip4),
+            pbr_option, self.pbr_vrfid)
+        self.assertTrue(self.verify_vrf(self.pbr_vrfid))
+        r = VppIpRoute(self, self.pg3.local_ip4, 24,
+                       [VppRoutePath(self.pg3.remote_ip4,
+                                     INVALID_INDEX)],
+                       table_id=self.pbr_vrfid)
+        r.add_vpp_config()
+
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg3.get_capture(len(pkts))
+        self.verify_capture(self.pg3, pkts)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key), 0)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg1.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+        # remove the classify session and the route
+        r.remove_vpp_config()
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip_match(src_ip=self.pg0.remote_ip4),
+            pbr_option, self.pbr_vrfid, is_add=0)
+
+        # and the table should be gone.
+        self.assertFalse(self.verify_vrf(self.pbr_vrfid))
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_classifier_ip6.py b/test/test_classifier_ip6.py
new file mode 100644
index 0000000..211374b
--- /dev/null
+++ b/test/test_classifier_ip6.py
@@ -0,0 +1,490 @@
+#!/usr/bin/env python3
+
+import unittest
+import socket
+import binascii
+
+from framework import VppTestCase, VppTestRunner
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet6 import IPv6, UDP, TCP
+from util import ppp
+from template_classifier import TestClassifier
+
+
+class TestClassifierIP6(TestClassifier):
+    """ Classifier IP6 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP6, cls).setUpClass()
+        cls.af = socket.AF_INET6
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierIP6, cls).tearDownClass()
+
+    def test_iacl_src_ip(self):
+        """ Source IP6 iACL test
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with source IP address.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with source IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip6_src'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(src_ip='ffffffffffffffffffffffffffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(src_ip=self.pg0.remote_ip6))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_dst_ip(self):
+        """ Destination IP6 iACL test
+
+        Test scenario for basic IP ACL with destination IP
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with destination IP address.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with destination IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip6_dst'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(dst_ip='ffffffffffffffffffffffffffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(dst_ip=self.pg1.remote_ip6))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_src_dst_ip(self):
+        """ Source and destination IP6 iACL test
+
+        Test scenario for basic IP ACL with source and destination IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create iACL with source and destination IP addresses.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with source and destination IP
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'ip6'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(src_ip='ffffffffffffffffffffffffffffffff',
+                                dst_ip='ffffffffffffffffffffffffffffffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(src_ip=self.pg0.remote_ip6,
+                                 dst_ip=self.pg1.remote_ip6))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+
+# Tests split to different test case classes because of issue reported in
+# ticket VPP-1336
+class TestClassifierIP6UDP(TestClassifier):
+    """ Classifier IP6 UDP proto Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP6UDP, cls).setUpClass()
+        cls.af = socket.AF_INET6
+
+    def test_iacl_proto_udp(self):
+        """ IP6 UDP protocol iACL test
+
+        Test scenario for basic protocol ACL with UDP protocol
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP protocol
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_udp'
+        self.create_classify_table(key, self.build_ip6_mask(nh='ff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_UDP))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_sport(self):
+        """ IP6 UDP source port iACL test
+
+        Test scenario for basic protocol ACL with UDP and sport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined sport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and sport
+        sport = 38
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=sport, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_udp_sport'
+        self.create_classify_table(
+            key, self.build_ip6_mask(nh='ff', src_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_UDP, src_port=sport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_dport(self):
+        """ IP6 UDP destination port iACL test
+
+        Test scenario for basic protocol ACL with UDP and dport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and dport
+        dport = 427
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=1234, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_udp_dport'
+        self.create_classify_table(
+            key, self.build_ip6_mask(nh='ff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_UDP, dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_udp_sport_dport(self):
+        """ IP6 UDP source and destination ports iACL test
+
+        Test scenario for basic protocol ACL with UDP and sport and dport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with UDP IP protocol and defined sport and dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with UDP and sport and dport
+        sport = 13720
+        dport = 9080
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  UDP(sport=sport, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_udp_ports'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(nh='ff', src_port='ffff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_UDP, src_port=sport,
+                                 dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierIP6TCP(TestClassifier):
+    """ Classifier IP6 TCP proto Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP6TCP, cls).setUpClass()
+        cls.af = socket.AF_INET6
+
+    def test_iacl_proto_tcp(self):
+        """ IP6 TCP protocol iACL test
+
+        Test scenario for basic protocol ACL with TCP protocol
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP protocol
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=1234, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_tcp'
+        self.create_classify_table(key, self.build_ip6_mask(nh='ff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_TCP))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_sport(self):
+        """ IP6 TCP source port iACL test
+
+        Test scenario for basic protocol ACL with TCP and sport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined sport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and sport
+        sport = 38
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=sport, dport=5678))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_tcp_sport'
+        self.create_classify_table(
+            key, self.build_ip6_mask(nh='ff', src_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_TCP, src_port=sport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_dport(self):
+        """ IP6 TCP destination port iACL test
+
+        Test scenario for basic protocol ACL with TCP and dport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and dport
+        dport = 427
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=1234, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_tcp_dport'
+        self.create_classify_table(
+            key, self.build_ip6_mask(nh='ff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_TCP, dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+    def test_iacl_proto_tcp_sport_dport(self):
+        """ IP6 TCP source and destination ports iACL test
+
+        Test scenario for basic protocol ACL with TCP and sport and dport
+            - Create IPv6 stream for pg0 -> pg1 interface.
+            - Create iACL with TCP IP protocol and defined sport and dport.
+            - Send and verify received packets on pg1 interface.
+        """
+
+        # Basic iACL testing with TCP and sport and dport
+        sport = 13720
+        dport = 9080
+        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
+                                  TCP(sport=sport, dport=dport))
+        self.pg0.add_stream(pkts)
+
+        key = 'nh_tcp_ports'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(nh='ff', src_port='ffff', dst_port='ffff'))
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(nh=socket.IPPROTO_TCP, src_port=sport,
+                                 dst_port=dport))
+        self.input_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg1.get_capture(len(pkts))
+        self.verify_capture(self.pg1, pkts, TCP)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierIP6Out(TestClassifier):
+    """ Classifier output IP6 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP6Out, cls).setUpClass()
+        cls.af = socket.AF_INET6
+
+    def test_acl_ip_out(self):
+        """ Output IP6 ACL test
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv6 stream for pg1 -> pg0 interface.
+            - Create ACL with source IP address.
+            - Send and verify received packets on pg0 interface.
+        """
+
+        # Basic oACL testing with source IP
+        pkts = self.create_stream(self.pg1, self.pg0, self.pg_if_packet_sizes)
+        self.pg1.add_stream(pkts)
+
+        key = 'ip6_out'
+        self.create_classify_table(
+            key,
+            self.build_ip6_mask(src_ip='ffffffffffffffffffffffffffffffff'),
+            data_offset=0)
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_ip6_match(src_ip=self.pg1.remote_ip6))
+        self.output_acl_set_interface(
+            self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg0.get_capture(len(pkts))
+        self.verify_capture(self.pg0, pkts)
+        self.pg1.assert_nothing_captured(remark="packets forwarded")
+        self.pg2.assert_nothing_captured(remark="packets forwarded")
+
+
+class TestClassifierIP6MAC(TestClassifier):
+    """ Classifier IP6 MAC Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP6MAC, cls).setUpClass()
+        cls.af = socket.AF_INET6
+
+    def test_acl_mac(self):
+        """ IP6 MAC iACL test
+
+        Test scenario for basic MAC ACL with source MAC
+            - Create IPv6 stream for pg0 -> pg2 interface.
+            - Create ACL with source MAC address.
+            - Send and verify received packets on pg2 interface.
+        """
+
+        # Basic iACL testing with source MAC
+        pkts = self.create_stream(self.pg0, self.pg2, self.pg_if_packet_sizes)
+        self.pg0.add_stream(pkts)
+
+        key = 'mac'
+        self.create_classify_table(
+            key, self.build_mac_mask(src_mac='ffffffffffff'), data_offset=-14)
+        self.create_classify_session(
+            self.acl_tbl_idx.get(key),
+            self.build_mac_match(src_mac=self.pg0.remote_mac))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        pkts = self.pg2.get_capture(len(pkts))
+        self.verify_capture(self.pg2, pkts)
+        self.pg0.assert_nothing_captured(remark="packets forwarded")
+        self.pg1.assert_nothing_captured(remark="packets forwarded")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_classify_l2_acl.py b/test/test_classify_l2_acl.py
new file mode 100644
index 0000000..b130988
--- /dev/null
+++ b/test/test_classify_l2_acl.py
@@ -0,0 +1,608 @@
+#!/usr/bin/env python3
+""" Classifier-based L2 ACL Test Case HLD:
+"""
+
+import unittest
+import random
+import binascii
+import socket
+
+
+from scapy.packet import Raw
+from scapy.data import ETH_P_IP
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
+from scapy.layers.inet6 import IPv6ExtHdrFragment
+from framework import VppTestCase, VppTestRunner
+from util import Host, ppp
+from template_classifier import TestClassifier
+
+
+class TestClassifyAcl(TestClassifier):
+    """ Classifier-based L2 input and output ACL Test Case """
+
+    # traffic types
+    IP = 0
+    ICMP = 1
+
+    # IP version
+    IPRANDOM = -1
+    IPV4 = 0
+    IPV6 = 1
+
+    # rule types
+    DENY = 0
+    PERMIT = 1
+
+    # supported protocols
+    proto = [[6, 17], [1, 58]]
+    proto_map = {1: 'ICMP', 58: 'ICMPv6EchoRequest', 6: 'TCP', 17: 'UDP'}
+    ICMPv4 = 0
+    ICMPv6 = 1
+    TCP = 0
+    UDP = 1
+    PROTO_ALL = 0
+
+    # port ranges
+    PORTS_ALL = -1
+    PORTS_RANGE = 0
+    PORTS_RANGE_2 = 1
+    udp_sport_from = 10
+    udp_sport_to = udp_sport_from + 5
+    udp_dport_from = 20000
+    udp_dport_to = udp_dport_from + 5000
+    tcp_sport_from = 30
+    tcp_sport_to = tcp_sport_from + 5
+    tcp_dport_from = 40000
+    tcp_dport_to = tcp_dport_from + 5000
+
+    udp_sport_from_2 = 90
+    udp_sport_to_2 = udp_sport_from_2 + 5
+    udp_dport_from_2 = 30000
+    udp_dport_to_2 = udp_dport_from_2 + 5000
+    tcp_sport_from_2 = 130
+    tcp_sport_to_2 = tcp_sport_from_2 + 5
+    tcp_dport_from_2 = 20000
+    tcp_dport_to_2 = tcp_dport_from_2 + 5000
+
+    icmp4_type = 8  # echo request
+    icmp4_code = 3
+    icmp6_type = 128  # echo request
+    icmp6_code = 3
+
+    icmp4_type_2 = 8
+    icmp4_code_from_2 = 5
+    icmp4_code_to_2 = 20
+    icmp6_type_2 = 128
+    icmp6_code_from_2 = 8
+    icmp6_code_to_2 = 42
+
+    # Test variables
+    bd_id = 1
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        Perform standard class setup (defined by class method setUpClass in
+        class VppTestCase) before running the test case, set test case related
+        variables and configure VPP.
+        """
+        super(TestClassifyAcl, cls).setUpClass()
+        cls.af = None
+
+        try:
+            # Create 2 pg interfaces
+            cls.create_pg_interfaces(range(2))
+
+            # Packet flows mapping pg0 -> pg1, pg2 etc.
+            cls.flows = dict()
+            cls.flows[cls.pg0] = [cls.pg1]
+
+            # Packet sizes
+            cls.pg_if_packet_sizes = [64, 512, 1518, 9018]
+
+            # Create BD with MAC learning and unknown unicast flooding disabled
+            # and put interfaces to this BD
+            cls.vapi.bridge_domain_add_del(bd_id=cls.bd_id, uu_flood=1,
+                                           learn=1)
+            for pg_if in cls.pg_interfaces:
+                cls.vapi.sw_interface_set_l2_bridge(
+                    rx_sw_if_index=pg_if.sw_if_index, bd_id=cls.bd_id)
+
+            # Set up all interfaces
+            for i in cls.pg_interfaces:
+                i.admin_up()
+
+            # Mapping between packet-generator index and lists of test hosts
+            cls.hosts_by_pg_idx = dict()
+            for pg_if in cls.pg_interfaces:
+                cls.hosts_by_pg_idx[pg_if.sw_if_index] = []
+
+            # Create list of deleted hosts
+            cls.deleted_hosts_by_pg_idx = dict()
+            for pg_if in cls.pg_interfaces:
+                cls.deleted_hosts_by_pg_idx[pg_if.sw_if_index] = []
+
+            # warm-up the mac address tables
+            # self.warmup_test()
+
+            # Holder of the active classify table key
+            cls.acl_active_table = ''
+
+        except Exception:
+            super(TestClassifyAcl, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifyAcl, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestClassifyAcl, self).setUp()
+        self.acl_tbl_idx = {}
+
+    def tearDown(self):
+        """
+        Show various debug prints after each test.
+        """
+        if not self.vpp_dead:
+            if self.acl_active_table == 'mac_inout':
+                self.output_acl_set_interface(
+                    self.pg1, self.acl_tbl_idx.get(self.acl_active_table), 0)
+                self.input_acl_set_interface(
+                    self.pg0, self.acl_tbl_idx.get(self.acl_active_table), 0)
+                self.acl_active_table = ''
+            elif self.acl_active_table == 'mac_out':
+                self.output_acl_set_interface(
+                    self.pg1, self.acl_tbl_idx.get(self.acl_active_table), 0)
+                self.acl_active_table = ''
+            elif self.acl_active_table == 'mac_in':
+                self.input_acl_set_interface(
+                    self.pg0, self.acl_tbl_idx.get(self.acl_active_table), 0)
+                self.acl_active_table = ''
+
+        super(TestClassifyAcl, self).tearDown()
+
+    def create_classify_session(self, intf, table_index, match,
+                                hit_next_index=0xffffffff, is_add=1):
+        """Create Classify Session
+
+        :param VppInterface intf: Interface to apply classify session.
+        :param int table_index: table index to identify classify table.
+        :param str match: matched value for interested traffic.
+        :param int is_add: option to configure classify session.
+            - create(1) or delete(0)
+        """
+        mask_match, mask_match_len = self._resolve_mask_match(match)
+        r = self.vapi.classify_add_del_session(
+            is_add=is_add,
+            table_index=table_index,
+            match=mask_match,
+            match_len=mask_match_len,
+            hit_next_index=hit_next_index)
+        self.assertIsNotNone(r, 'No response msg for add_del_session')
+
+    def create_hosts(self, count, start=0):
+        """
+        Create required number of host MAC addresses and distribute them among
+        interfaces. Create host IPv4 address for every host MAC address.
+
+        :param int count: Number of hosts to create MAC/IPv4 addresses for.
+        :param int start: Number to start numbering from.
+        """
+        n_int = len(self.pg_interfaces)
+        macs_per_if = count // n_int
+        i = -1
+        for pg_if in self.pg_interfaces:
+            i += 1
+            start_nr = macs_per_if * i + start
+            end_nr = count + start if i == (n_int - 1) \
+                else macs_per_if * (i + 1) + start
+            hosts = self.hosts_by_pg_idx[pg_if.sw_if_index]
+            for j in range(start_nr, end_nr):
+                host = Host(
+                    "00:00:00:ff:%02x:%02x" % (pg_if.sw_if_index, j),
+                    "172.17.1%02x.%u" % (pg_if.sw_if_index, j),
+                    "2017:dead:%02x::%u" % (pg_if.sw_if_index, j))
+                hosts.append(host)
+
+    def create_upper_layer(self, packet_index, proto, ports=0):
+        p = self.proto_map[proto]
+        if p == 'UDP':
+            if ports == 0:
+                return UDP(sport=random.randint(self.udp_sport_from,
+                                                self.udp_sport_to),
+                           dport=random.randint(self.udp_dport_from,
+                                                self.udp_dport_to))
+            else:
+                return UDP(sport=ports, dport=ports)
+        elif p == 'TCP':
+            if ports == 0:
+                return TCP(sport=random.randint(self.tcp_sport_from,
+                                                self.tcp_sport_to),
+                           dport=random.randint(self.tcp_dport_from,
+                                                self.tcp_dport_to))
+            else:
+                return TCP(sport=ports, dport=ports)
+        return ''
+
+    def create_stream(self, src_if, packet_sizes, traffic_type=0, ipv6=0,
+                      proto=-1, ports=0, fragments=False,
+                      pkt_raw=True, etype=-1):
+        """
+        Create input packet stream for defined interface using hosts or
+        deleted_hosts list.
+
+        :param object src_if: Interface to create packet stream for.
+        :param list packet_sizes: List of required packet sizes.
+        :param traffic_type: 1: ICMP packet, 2: IPv6 with EH, 0: otherwise.
+        :return: Stream of packets.
+        """
+        pkts = []
+        if self.flows.__contains__(src_if):
+            src_hosts = self.hosts_by_pg_idx[src_if.sw_if_index]
+            for dst_if in self.flows[src_if]:
+                dst_hosts = self.hosts_by_pg_idx[dst_if.sw_if_index]
+                n_int = len(dst_hosts) * len(src_hosts)
+                for i in range(0, n_int):
+                    dst_host = dst_hosts[i // len(src_hosts)]
+                    src_host = src_hosts[i % len(src_hosts)]
+                    pkt_info = self.create_packet_info(src_if, dst_if)
+                    if ipv6 == 1:
+                        pkt_info.ip = 1
+                    elif ipv6 == 0:
+                        pkt_info.ip = 0
+                    else:
+                        pkt_info.ip = random.choice([0, 1])
+                    if proto == -1:
+                        pkt_info.proto = random.choice(self.proto[self.IP])
+                    else:
+                        pkt_info.proto = proto
+                    payload = self.info_to_payload(pkt_info)
+                    p = Ether(dst=dst_host.mac, src=src_host.mac)
+                    if etype > 0:
+                        p = Ether(dst=dst_host.mac,
+                                  src=src_host.mac,
+                                  type=etype)
+                    if pkt_info.ip:
+                        p /= IPv6(dst=dst_host.ip6, src=src_host.ip6)
+                        if fragments:
+                            p /= IPv6ExtHdrFragment(offset=64, m=1)
+                    else:
+                        if fragments:
+                            p /= IP(src=src_host.ip4, dst=dst_host.ip4,
+                                    flags=1, frag=64)
+                        else:
+                            p /= IP(src=src_host.ip4, dst=dst_host.ip4)
+                    if traffic_type == self.ICMP:
+                        if pkt_info.ip:
+                            p /= ICMPv6EchoRequest(type=self.icmp6_type,
+                                                   code=self.icmp6_code)
+                        else:
+                            p /= ICMP(type=self.icmp4_type,
+                                      code=self.icmp4_code)
+                    else:
+                        p /= self.create_upper_layer(i, pkt_info.proto, ports)
+                    if pkt_raw:
+                        p /= Raw(payload)
+                        pkt_info.data = p.copy()
+                    if pkt_raw:
+                        size = random.choice(packet_sizes)
+                        self.extend_packet(p, size)
+                    pkts.append(p)
+        return pkts
+
+    def verify_capture(self, pg_if, capture,
+                       traffic_type=0, ip_type=0, etype=-1):
+        """
+        Verify captured input packet stream for defined interface.
+
+        :param object pg_if: Interface to verify captured packet stream for.
+        :param list capture: Captured packet stream.
+        :param traffic_type: 1: ICMP packet, 2: IPv6 with EH, 0: otherwise.
+        """
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = pg_if.sw_if_index
+        for packet in capture:
+            if etype > 0:
+                if packet[Ether].type != etype:
+                    self.logger.error(ppp("Unexpected ethertype in packet:",
+                                          packet))
+                else:
+                    continue
+            try:
+                # Raw data for ICMPv6 are stored in ICMPv6EchoRequest.data
+                if traffic_type == self.ICMP and ip_type == self.IPV6:
+                    payload_info = self.payload_to_info(
+                        packet[ICMPv6EchoRequest].data)
+                    payload = packet[ICMPv6EchoRequest]
+                else:
+                    payload_info = self.payload_to_info(packet[Raw])
+                    payload = packet[self.proto_map[payload_info.proto]]
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+            if ip_type != 0:
+                self.assertEqual(payload_info.ip, ip_type)
+            if traffic_type == self.ICMP:
+                try:
+                    if payload_info.ip == 0:
+                        self.assertEqual(payload.type, self.icmp4_type)
+                        self.assertEqual(payload.code, self.icmp4_code)
+                    else:
+                        self.assertEqual(payload.type, self.icmp6_type)
+                        self.assertEqual(payload.code, self.icmp6_code)
+                except:
+                    self.logger.error(ppp("Unexpected or invalid packet "
+                                          "(outside network):", packet))
+                    raise
+            else:
+                try:
+                    ip_version = IPv6 if payload_info.ip == 1 else IP
+
+                    ip = packet[ip_version]
+                    packet_index = payload_info.index
+
+                    self.assertEqual(payload_info.dst, dst_sw_if_index)
+                    self.logger.debug("Got packet on port %s: src=%u (id=%u)" %
+                                      (pg_if.name, payload_info.src,
+                                       packet_index))
+                    next_info = self.get_next_packet_info_for_interface2(
+                        payload_info.src, dst_sw_if_index,
+                        last_info[payload_info.src])
+                    last_info[payload_info.src] = next_info
+                    self.assertTrue(next_info is not None)
+                    self.assertEqual(packet_index, next_info.index)
+                    saved_packet = next_info.data
+                    # Check standard fields
+                    self.assertEqual(ip.src, saved_packet[ip_version].src)
+                    self.assertEqual(ip.dst, saved_packet[ip_version].dst)
+                    p = self.proto_map[payload_info.proto]
+                    if p == 'TCP':
+                        tcp = packet[TCP]
+                        self.assertEqual(tcp.sport, saved_packet[
+                            TCP].sport)
+                        self.assertEqual(tcp.dport, saved_packet[
+                            TCP].dport)
+                    elif p == 'UDP':
+                        udp = packet[UDP]
+                        self.assertEqual(udp.sport, saved_packet[
+                            UDP].sport)
+                        self.assertEqual(udp.dport, saved_packet[
+                            UDP].dport)
+                except:
+                    self.logger.error(ppp("Unexpected or invalid packet:",
+                                          packet))
+                    raise
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(
+                remaining_packet is None,
+                "Port %u: Packet expected from source %u didn't arrive" %
+                (dst_sw_if_index, i.sw_if_index))
+
+    def run_traffic_no_check(self):
+        # Test
+        # Create incoming packet streams for packet-generator interfaces
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+
+        # Enable packet capture and start packet sending
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+    def run_verify_test(self, traffic_type=0, ip_type=0, proto=-1, ports=0,
+                        frags=False, pkt_raw=True, etype=-1):
+        # Test
+        # Create incoming packet streams for packet-generator interfaces
+        pkts_cnt = 0
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes,
+                                          traffic_type, ip_type, proto, ports,
+                                          frags, pkt_raw, etype)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+                    pkts_cnt += len(pkts)
+
+        # Enable packet capture and start packet sendingself.IPV
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Verify
+        # Verify outgoing packet streams per packet-generator interface
+        for src_if in self.pg_interfaces:
+            if self.flows.__contains__(src_if):
+                for dst_if in self.flows[src_if]:
+                    capture = dst_if.get_capture(pkts_cnt)
+                    self.logger.info("Verifying capture on interface %s" %
+                                     dst_if.name)
+                    self.verify_capture(dst_if, capture,
+                                        traffic_type, ip_type, etype)
+
+    def run_verify_negat_test(self, traffic_type=0, ip_type=0, proto=-1,
+                              ports=0, frags=False, etype=-1):
+        # Test
+        self.reset_packet_infos()
+        for i in self.pg_interfaces:
+            if self.flows.__contains__(i):
+                pkts = self.create_stream(i, self.pg_if_packet_sizes,
+                                          traffic_type, ip_type, proto, ports,
+                                          frags, True, etype)
+                if len(pkts) > 0:
+                    i.add_stream(pkts)
+
+        # Enable packet capture and start packet sending
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Verify
+        # Verify outgoing packet streams per packet-generator interface
+        for src_if in self.pg_interfaces:
+            if self.flows.__contains__(src_if):
+                for dst_if in self.flows[src_if]:
+                    self.logger.info("Verifying capture on interface %s" %
+                                     dst_if.name)
+                    capture = dst_if.get_capture(0)
+                    self.assertEqual(len(capture), 0)
+
+    def build_classify_table(self, src_mac='', dst_mac='', ether_type='',
+                             etype='', key='mac', hit_next_index=0xffffffff):
+        # Basic ACL testing
+        a_mask = self.build_mac_mask(src_mac=src_mac, dst_mac=dst_mac,
+                                     ether_type=ether_type)
+        self.create_classify_table(key, a_mask)
+        for host in self.hosts_by_pg_idx[self.pg0.sw_if_index]:
+            s_mac = host.mac if src_mac else ''
+            if dst_mac:
+                for dst_if in self.flows[self.pg0]:
+                    for dst_host in self.hosts_by_pg_idx[dst_if.sw_if_index]:
+                        self.create_classify_session(
+                            self.pg0, self.acl_tbl_idx.get(key),
+                            self.build_mac_match(src_mac=s_mac,
+                                                 dst_mac=dst_host.mac,
+                                                 ether_type=etype),
+                            hit_next_index=hit_next_index)
+            else:
+                self.create_classify_session(
+                    self.pg0, self.acl_tbl_idx.get(key),
+                    self.build_mac_match(src_mac=s_mac, dst_mac='',
+                                         ether_type=etype),
+                    hit_next_index=hit_next_index)
+
+    def test_0000_warmup_test(self):
+        """ Learn the MAC addresses
+        """
+        self.create_hosts(2)
+        self.run_traffic_no_check()
+
+    def test_0010_inacl_permit_src_mac(self):
+        """ Input  L2 ACL test - permit source MAC
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with source MAC address.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_in'
+        self.build_classify_table(src_mac='ffffffffffff', key=key)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+    def test_0011_inacl_permit_dst_mac(self):
+        """ Input  L2 ACL test - permit destination MAC
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with destination MAC address.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_in'
+        self.build_classify_table(dst_mac='ffffffffffff', key=key)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+    def test_0012_inacl_permit_src_dst_mac(self):
+        """ Input  L2 ACL test - permit source and destination MAC
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with source and destination MAC addresses.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_in'
+        self.build_classify_table(
+            src_mac='ffffffffffff', dst_mac='ffffffffffff', key=key)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+    def test_0013_inacl_permit_ether_type(self):
+        """ Input  L2 ACL test - permit ether_type
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with destination MAC address.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_in'
+        self.build_classify_table(
+            ether_type='ffff', etype=hex(ETH_P_IP)[2:], key=key)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+    def test_0015_inacl_deny(self):
+        """ Input  L2 ACL test - deny
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+
+            - Create ACL with source MAC address.
+            - Send and verify no received packets on pg1 interface.
+        """
+        key = 'mac_in'
+        self.build_classify_table(
+            src_mac='ffffffffffff', hit_next_index=0, key=key)
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_negat_test(self.IP, self.IPV4, -1)
+
+    def test_0020_outacl_permit(self):
+        """ Output L2 ACL test - permit
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with source MAC address.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_out'
+        self.build_classify_table(src_mac='ffffffffffff', key=key)
+        self.output_acl_set_interface(self.pg1, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+    def test_0025_outacl_deny(self):
+        """ Output L2 ACL test - deny
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACL with source MAC address.
+            - Send and verify no received packets on pg1 interface.
+        """
+        key = 'mac_out'
+        self.build_classify_table(
+            src_mac='ffffffffffff', hit_next_index=0, key=key)
+        self.output_acl_set_interface(self.pg1, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_negat_test(self.IP, self.IPV4, -1)
+
+    def test_0030_inoutacl_permit(self):
+        """ Input+Output L2 ACL test - permit
+
+        Test scenario for basic IP ACL with source IP
+            - Create IPv4 stream for pg0 -> pg1 interface.
+            - Create ACLs with source MAC address.
+            - Send and verify received packets on pg1 interface.
+        """
+        key = 'mac_inout'
+        self.build_classify_table(src_mac='ffffffffffff', key=key)
+        self.output_acl_set_interface(self.pg1, self.acl_tbl_idx.get(key))
+        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
+        self.acl_active_table = key
+        self.run_verify_test(self.IP, self.IPV4, -1)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_cli.py b/test/test_cli.py
new file mode 100644
index 0000000..5005bf4
--- /dev/null
+++ b/test/test_cli.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+"""CLI functional tests"""
+
+import datetime
+import time
+import unittest
+
+from vpp_papi import VPPIOError
+
+from framework import VppTestCase, VppTestRunner
+
+
+class TestCLI(VppTestCase):
+    """ CLI Test Case """
+    maxDiff = None
+
+    @classmethod
+    def setUpClass(cls):
+        # using the framework default
+        cls.vapi_response_timeout = 5
+        super(TestCLI, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCLI, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestCLI, self).setUp()
+
+    def tearDown(self):
+        super(TestCLI, self).tearDown()
+
+    def test_cli_retval(self):
+        """ CLI inband retval """
+        rv = self.vapi.papi.cli_inband(cmd='this command does not exist')
+        self.assertNotEqual(rv.retval, 0)
+
+        rv = self.vapi.papi.cli_inband(cmd='show version')
+        self.assertEqual(rv.retval, 0)
+
+    def test_long_cli_delay(self):
+        """ Test that VppApiClient raises VppIOError if timeout."""  # noqa
+        with self.assertRaises(VPPIOError) as ctx:
+            rv = self.vapi.papi.cli_inband(cmd='wait 10')
+
+    def test_long_cli_delay_override(self):
+        """ Test per-command _timeout option."""  # noqa
+        rv = self.vapi.papi.cli_inband(cmd='wait 10', _timeout=15)
+        self.assertEqual(rv.retval, 0)
+
+
+class TestCLIExtendedVapiTimeout(VppTestCase):
+    maxDiff = None
+
+    @classmethod
+    def setUpClass(cls):
+        cls.vapi_response_timeout = 15
+        cls.__doc__ = " CLI Test Case w/ Extended (%ssec) Vapi Timeout " \
+                      % cls.vapi_response_timeout
+        super(TestCLIExtendedVapiTimeout, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCLIExtendedVapiTimeout, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestCLIExtendedVapiTimeout, self).setUp()
+
+    def tearDown(self):
+        super(TestCLIExtendedVapiTimeout, self).tearDown()
+
+    def test_long_cli_delay(self):
+        """ Test that delayed result returns with extended timeout."""
+        wait_secs = self.vapi_response_timeout - 1
+
+        # get vpp time as float
+        start = self.vapi.papi.show_vpe_system_time(
+            _no_type_conversion=True).vpe_system_time
+        rv = self.vapi.papi.cli_inband(cmd='wait %s' % wait_secs)
+        now = self.vapi.papi.show_vpe_system_time(
+            _no_type_conversion=True).vpe_system_time
+
+        # assume that the overhead of the measurement is not more that .5 sec.
+        self.assertEqual(round(now - start), wait_secs)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_cnat.py b/test/test_cnat.py
new file mode 100644
index 0000000..ff4c440
--- /dev/null
+++ b/test/test_cnat.py
@@ -0,0 +1,975 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto, INVALID_INDEX
+from itertools import product
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP, TCP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import IPv6, IPerror6, ICMPv6DestUnreach
+from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply
+
+import struct
+
+from ipaddress import ip_address, ip_network, \
+    IPv4Address, IPv6Address, IPv4Network, IPv6Network
+
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+
+N_PKTS = 15
+
+
+class Ep(object):
+    """ CNat endpoint """
+
+    def __init__(self, ip=None, port=0, l4p=TCP,
+                 sw_if_index=INVALID_INDEX, is_v6=False):
+        self.ip = ip
+        if ip is None:
+            self.ip = "::" if is_v6 else "0.0.0.0"
+        self.port = port
+        self.l4p = l4p
+        self.sw_if_index = sw_if_index
+        if is_v6:
+            self.if_af = VppEnum.vl_api_address_family_t.ADDRESS_IP6
+        else:
+            self.if_af = VppEnum.vl_api_address_family_t.ADDRESS_IP4
+
+    def encode(self):
+        return {'addr': self.ip,
+                'port': self.port,
+                'sw_if_index': self.sw_if_index,
+                'if_af': self.if_af}
+
+    @classmethod
+    def from_pg(cls, pg, is_v6=False):
+        if pg is None:
+            return cls(is_v6=is_v6)
+        else:
+            return cls(sw_if_index=pg.sw_if_index, is_v6=is_v6)
+
+    @property
+    def isV6(self):
+        return ":" in self.ip
+
+    def __str__(self):
+        return ("%s:%d" % (self.ip, self.port))
+
+
+class EpTuple(object):
+    """ CNat endpoint """
+
+    def __init__(self, src, dst):
+        self.src = src
+        self.dst = dst
+
+    def encode(self):
+        return {'src_ep': self.src.encode(),
+                'dst_ep': self.dst.encode()}
+
+    def __str__(self):
+        return ("%s->%s" % (self.src, self.dst))
+
+
+class VppCNatTranslation(VppObject):
+
+    def __init__(self, test, iproto, vip, paths):
+        self._test = test
+        self.vip = vip
+        self.iproto = iproto
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+
+    def __str__(self):
+        return ("%s %s %s" % (self.vip, self.iproto, self.paths))
+
+    @property
+    def vl4_proto(self):
+        ip_proto = VppEnum.vl_api_ip_proto_t
+        return {
+            UDP: ip_proto.IP_API_PROTO_UDP,
+            TCP: ip_proto.IP_API_PROTO_TCP,
+        }[self.iproto]
+
+    def add_vpp_config(self):
+        r = self._test.vapi.cnat_translation_update(
+            {'vip': self.vip.encode(),
+             'ip_proto': self.vl4_proto,
+             'n_paths': len(self.paths),
+             'paths': self.encoded_paths})
+        self._test.registry.register(self, self._test.logger)
+        self.id = r.id
+
+    def modify_vpp_config(self, paths):
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+
+        r = self._test.vapi.cnat_translation_update(
+            {'vip': self.vip.encode(),
+             'ip_proto': self.vl4_proto,
+             'n_paths': len(self.paths),
+             'paths': self.encoded_paths})
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.cnat_translation_del(id=self.id)
+
+    def query_vpp_config(self):
+        for t in self._test.vapi.cnat_translation_dump():
+            if self.id == t.translation.id:
+                return t.translation
+        return None
+
+    def object_id(self):
+        return ("cnat-translation-%s" % (self.vip))
+
+    def get_stats(self):
+        c = self._test.statistics.get_counter("/net/cnat-translation")
+        return c[0][self.id]
+
+
+class TestCNatTranslation(VppTestCase):
+    """ CNat Translation """
+    extra_vpp_punt_config = ["cnat", "{",
+                             "session-db-buckets", "64",
+                             "session-cleanup-timeout", "0.1",
+                             "session-max-age", "1",
+                             "tcp-max-age", "1",
+                             "scanner", "off", "}"]
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCNatTranslation, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCNatTranslation, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestCNatTranslation, self).setUp()
+
+        self.create_pg_interfaces(range(3))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestCNatTranslation, self).tearDown()
+
+    def cnat_create_translation(self, vip, nbr):
+        ip_v = "ip6" if vip.isV6 else "ip4"
+        dep = Ep(getattr(self.pg1.remote_hosts[nbr], ip_v), 4000 + nbr)
+        sep = Ep("::", 0) if vip.isV6 else Ep("0.0.0.0", 0)
+        t1 = VppCNatTranslation(
+            self, vip.l4p, vip,
+            [EpTuple(sep, dep), EpTuple(sep, dep)])
+        t1.add_vpp_config()
+        return t1
+
+    def cnat_test_translation(self, t1, nbr, sports, isV6=False):
+        ip_v = "ip6" if isV6 else "ip4"
+        ip_class = IPv6 if isV6 else IP
+        vip = t1.vip
+
+        #
+        # Flows
+        #
+        for src in self.pg0.remote_hosts:
+            for sport in sports:
+                # from client to vip
+                p1 = (Ether(dst=self.pg0.local_mac,
+                            src=src.mac) /
+                      ip_class(src=getattr(src, ip_v), dst=vip.ip) /
+                      vip.l4p(sport=sport, dport=vip.port) /
+                      Raw())
+
+                self.vapi.cli("trace add pg-input 1")
+                rxs = self.send_and_expect(self.pg0,
+                                           p1 * N_PKTS,
+                                           self.pg1)
+                self.logger.info(self.vapi.cli("show trace max 1"))
+
+                for rx in rxs:
+                    self.assert_packet_checksums_valid(rx)
+                    self.assertEqual(
+                        rx[ip_class].dst,
+                        getattr(self.pg1.remote_hosts[nbr], ip_v))
+                    self.assertEqual(rx[vip.l4p].dport, 4000 + nbr)
+                    self.assertEqual(
+                        rx[ip_class].src,
+                        getattr(src, ip_v))
+                    self.assertEqual(rx[vip.l4p].sport, sport)
+
+                # from vip to client
+                p1 = (Ether(dst=self.pg1.local_mac,
+                            src=self.pg1.remote_mac) /
+                      ip_class(src=getattr(
+                          self.pg1.remote_hosts[nbr],
+                          ip_v),
+                          dst=getattr(src, ip_v)) /
+                      vip.l4p(sport=4000 + nbr, dport=sport) /
+                      Raw())
+
+                rxs = self.send_and_expect(self.pg1,
+                                           p1 * N_PKTS,
+                                           self.pg0)
+
+                for rx in rxs:
+                    self.assert_packet_checksums_valid(rx)
+                    self.assertEqual(
+                        rx[ip_class].dst,
+                        getattr(src, ip_v))
+                    self.assertEqual(rx[vip.l4p].dport, sport)
+                    self.assertEqual(rx[ip_class].src, vip.ip)
+                    self.assertEqual(rx[vip.l4p].sport, vip.port)
+
+                #
+                # packets to the VIP that do not match a
+                # translation are dropped
+                #
+                p1 = (Ether(dst=self.pg0.local_mac,
+                            src=src.mac) /
+                      ip_class(src=getattr(src, ip_v), dst=vip.ip) /
+                      vip.l4p(sport=sport, dport=6666) /
+                      Raw())
+
+                self.send_and_assert_no_replies(self.pg0,
+                                                p1 * N_PKTS,
+                                                self.pg1)
+
+                #
+                # packets from the VIP that do not match a
+                # session are forwarded
+                #
+                p1 = (Ether(dst=self.pg1.local_mac,
+                            src=self.pg1.remote_mac) /
+                      ip_class(src=getattr(
+                          self.pg1.remote_hosts[nbr],
+                          ip_v),
+                          dst=getattr(src, ip_v)) /
+                      vip.l4p(sport=6666, dport=sport) /
+                      Raw())
+
+                rxs = self.send_and_expect(self.pg1,
+                                           p1 * N_PKTS,
+                                           self.pg0)
+
+    def cnat_test_translation_update(self, t1, sports, isV6=False):
+        ip_v = "ip6" if isV6 else "ip4"
+        ip_class = IPv6 if isV6 else IP
+        vip = t1.vip
+
+        #
+        # modify the translation to use a different backend
+        #
+        dep = Ep(getattr(self.pg2, 'remote_' + ip_v), 5000)
+        sep = Ep("::", 0) if isV6 else Ep("0.0.0.0", 0)
+        t1.modify_vpp_config([EpTuple(sep, dep)])
+
+        #
+        # existing flows follow the old path
+        #
+        for src in self.pg0.remote_hosts:
+            for sport in sports:
+                # from client to vip
+                p1 = (Ether(dst=self.pg0.local_mac,
+                            src=src.mac) /
+                      ip_class(src=getattr(src, ip_v), dst=vip.ip) /
+                      vip.l4p(sport=sport, dport=vip.port) /
+                      Raw())
+
+                rxs = self.send_and_expect(self.pg0,
+                                           p1 * N_PKTS,
+                                           self.pg1)
+
+        #
+        # new flows go to the new backend
+        #
+        for src in self.pg0.remote_hosts:
+            p1 = (Ether(dst=self.pg0.local_mac,
+                        src=src.mac) /
+                  ip_class(src=getattr(src, ip_v), dst=vip.ip) /
+                  vip.l4p(sport=9999, dport=vip.port) /
+                  Raw())
+
+            rxs = self.send_and_expect(self.pg0,
+                                       p1 * N_PKTS,
+                                       self.pg2)
+
+    def cnat_translation(self, vips, isV6=False):
+        """ CNat Translation """
+
+        ip_class = IPv6 if isV6 else IP
+        ip_v = "ip6" if isV6 else "ip4"
+        sports = [1234, 1233]
+
+        #
+        # turn the scanner off whilst testing otherwise sessions
+        # will time out
+        #
+        self.vapi.cli("test cnat scanner off")
+
+        sessions = self.vapi.cnat_session_dump()
+
+        trs = []
+        for nbr, vip in enumerate(vips):
+            trs.append(self.cnat_create_translation(vip, nbr))
+
+        self.logger.info(self.vapi.cli("sh cnat client"))
+        self.logger.info(self.vapi.cli("sh cnat translation"))
+
+        #
+        # translations
+        #
+        for nbr, vip in enumerate(vips):
+            self.cnat_test_translation(trs[nbr], nbr, sports, isV6=isV6)
+            self.cnat_test_translation_update(trs[nbr], sports, isV6=isV6)
+            if isV6:
+                self.logger.info(self.vapi.cli(
+                    "sh ip6 fib %s" % self.pg0.remote_ip6))
+            else:
+                self.logger.info(self.vapi.cli(
+                    "sh ip fib %s" % self.pg0.remote_ip4))
+            self.logger.info(self.vapi.cli("sh cnat session verbose"))
+
+        #
+        # turn the scanner back on and wait until the sessions
+        # all disapper
+        #
+        self.vapi.cli("test cnat scanner on")
+
+        n_tries = 0
+        sessions = self.vapi.cnat_session_dump()
+        while (len(sessions) and n_tries < 100):
+            n_tries += 1
+            sessions = self.vapi.cnat_session_dump()
+            self.sleep(2)
+            self.logger.info(self.vapi.cli("show cnat session verbose"))
+
+        self.assertTrue(n_tries < 100)
+        self.vapi.cli("test cnat scanner off")
+
+        #
+        # load some flows again and purge
+        #
+        for vip in vips:
+            for src in self.pg0.remote_hosts:
+                for sport in sports:
+                    # from client to vip
+                    p1 = (Ether(dst=self.pg0.local_mac,
+                                src=src.mac) /
+                          ip_class(src=getattr(src, ip_v), dst=vip.ip) /
+                          vip.l4p(sport=sport, dport=vip.port) /
+                          Raw())
+                    self.send_and_expect(self.pg0,
+                                         p1 * N_PKTS,
+                                         self.pg2)
+
+        for tr in trs:
+            tr.remove_vpp_config()
+
+        self.assertTrue(self.vapi.cnat_session_dump())
+        self.vapi.cnat_session_purge()
+        self.assertFalse(self.vapi.cnat_session_dump())
+
+    def test_icmp(self):
+        vips = [
+            Ep("30.0.0.1", 5555),
+            Ep("30.0.0.2", 5554),
+            Ep("30.0.0.2", 5553, UDP),
+            Ep("30::1", 6666),
+            Ep("30::2", 5553, UDP),
+        ]
+        sport = 1234
+
+        self.pg0.generate_remote_hosts(len(vips))
+        self.pg0.configure_ipv6_neighbors()
+        self.pg0.configure_ipv4_neighbors()
+
+        self.pg1.generate_remote_hosts(len(vips))
+        self.pg1.configure_ipv6_neighbors()
+        self.pg1.configure_ipv4_neighbors()
+
+        self.vapi.cli("test cnat scanner off")
+        trs = []
+        for nbr, vip in enumerate(vips):
+            trs.append(self.cnat_create_translation(vip, nbr))
+
+        self.logger.info(self.vapi.cli("sh cnat client"))
+        self.logger.info(self.vapi.cli("sh cnat translation"))
+
+        for nbr, vip in enumerate(vips):
+            if vip.isV6:
+                client_addr = self.pg0.remote_hosts[0].ip6
+                remote_addr = self.pg1.remote_hosts[nbr].ip6
+                remote2_addr = self.pg2.remote_hosts[0].ip6
+            else:
+                client_addr = self.pg0.remote_hosts[0].ip4
+                remote_addr = self.pg1.remote_hosts[nbr].ip4
+                remote2_addr = self.pg2.remote_hosts[0].ip4
+            IP46 = IPv6 if vip.isV6 else IP
+            # from client to vip
+            p1 = (Ether(dst=self.pg0.local_mac,
+                        src=self.pg0.remote_hosts[0].mac) /
+                  IP46(src=client_addr, dst=vip.ip) /
+                  vip.l4p(sport=sport, dport=vip.port) /
+                  Raw())
+
+            rxs = self.send_and_expect(self.pg0,
+                                       p1 * N_PKTS,
+                                       self.pg1)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, remote_addr)
+                self.assertEqual(rx[vip.l4p].dport, 4000 + nbr)
+                self.assertEqual(rx[IP46].src, client_addr)
+                self.assertEqual(rx[vip.l4p].sport, sport)
+
+            InnerIP = rxs[0][IP46]
+
+            ICMP46 = ICMPv6DestUnreach if vip.isV6 else ICMP
+            ICMPelem = ICMPv6DestUnreach(code=1) if vip.isV6 else ICMP(type=11)
+            # from vip to client, ICMP error
+            p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                  IP46(src=remote_addr, dst=client_addr) /
+                  ICMPelem / InnerIP)
+
+            rxs = self.send_and_expect(self.pg1,
+                                       p1 * N_PKTS,
+                                       self.pg0)
+
+            TCPUDPError = TCPerror if vip.l4p == TCP else UDPerror
+            IP46error = IPerror6 if vip.isV6 else IPerror
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].src, vip.ip)
+                self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
+                self.assertEqual(rx[ICMP46][IP46error].dst, vip.ip)
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPUDPError].sport, sport)
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPUDPError].dport, vip.port)
+
+            # from other remote to client, ICMP error
+            # outside shouldn't be NAT-ed
+            p1 = (Ether(dst=self.pg2.local_mac, src=self.pg2.remote_mac) /
+                  IP46(src=remote2_addr, dst=client_addr) /
+                  ICMPelem / InnerIP)
+
+            rxs = self.send_and_expect(self.pg1,
+                                       p1 * N_PKTS,
+                                       self.pg0)
+
+            TCPUDPError = TCPerror if vip.l4p == TCP else UDPerror
+            IP46error = IPerror6 if vip.isV6 else IPerror
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].src, remote2_addr)
+                self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
+                self.assertEqual(rx[ICMP46][IP46error].dst, vip.ip)
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPUDPError].sport, sport)
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPUDPError].dport, vip.port)
+
+        self.vapi.cnat_session_purge()
+
+    def test_cnat6(self):
+        # """ CNat Translation ipv6 """
+        vips = [
+            Ep("30::1", 5555),
+            Ep("30::2", 5554),
+            Ep("30::2", 5553, UDP),
+        ]
+
+        self.pg0.generate_remote_hosts(len(vips))
+        self.pg0.configure_ipv6_neighbors()
+        self.pg1.generate_remote_hosts(len(vips))
+        self.pg1.configure_ipv6_neighbors()
+
+        self.cnat_translation(vips, isV6=True)
+
+    def test_cnat4(self):
+        # """ CNat Translation ipv4 """
+
+        vips = [
+            Ep("30.0.0.1", 5555),
+            Ep("30.0.0.2", 5554),
+            Ep("30.0.0.2", 5553, UDP),
+        ]
+
+        self.pg0.generate_remote_hosts(len(vips))
+        self.pg0.configure_ipv4_neighbors()
+        self.pg1.generate_remote_hosts(len(vips))
+        self.pg1.configure_ipv4_neighbors()
+
+        self.cnat_translation(vips)
+
+
+class TestCNatSourceNAT(VppTestCase):
+    """ CNat Source NAT """
+    extra_vpp_punt_config = ["cnat", "{",
+                             "session-cleanup-timeout", "0.1",
+                             "session-max-age", "1",
+                             "tcp-max-age", "1",
+                             "scanner", "off", "}"]
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCNatSourceNAT, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCNatSourceNAT, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestCNatSourceNAT, self).setUp()
+
+        self.create_pg_interfaces(range(3))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+        self.pg0.configure_ipv6_neighbors()
+        self.pg0.configure_ipv4_neighbors()
+        self.pg1.generate_remote_hosts(2)
+        self.pg1.configure_ipv4_neighbors()
+        self.pg1.configure_ipv6_neighbors()
+
+        self.vapi.cnat_set_snat_addresses(
+            snat_ip4=self.pg2.remote_hosts[0].ip4,
+            snat_ip6=self.pg2.remote_hosts[0].ip6,
+            sw_if_index=INVALID_INDEX)
+        self.vapi.feature_enable_disable(
+            enable=1,
+            arc_name="ip6-unicast",
+            feature_name="cnat-snat-ip6",
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.feature_enable_disable(
+            enable=1,
+            arc_name="ip4-unicast",
+            feature_name="cnat-snat-ip4",
+            sw_if_index=self.pg0.sw_if_index)
+
+        policie_tbls = VppEnum.vl_api_cnat_snat_policy_table_t
+        self.vapi.cnat_set_snat_policy(
+            policy=VppEnum.vl_api_cnat_snat_policies_t.CNAT_POLICY_IF_PFX)
+        for i in self.pg_interfaces:
+            self.vapi.cnat_snat_policy_add_del_if(
+                sw_if_index=i.sw_if_index, is_add=1,
+                table=policie_tbls.CNAT_POLICY_INCLUDE_V6)
+            self.vapi.cnat_snat_policy_add_del_if(
+                sw_if_index=i.sw_if_index, is_add=1,
+                table=policie_tbls.CNAT_POLICY_INCLUDE_V4)
+
+    def tearDown(self):
+        self.vapi.cnat_session_purge()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestCNatSourceNAT, self).tearDown()
+
+    def test_snat_v6(self):
+        # """ CNat Source Nat v6 """
+        self.sourcenat_test_tcp_udp_conf(TCP, isV6=True)
+        self.sourcenat_test_tcp_udp_conf(UDP, isV6=True)
+        self.sourcenat_test_icmp_err_conf(isV6=True)
+        self.sourcenat_test_icmp_echo6_conf()
+
+    def test_snat_v4(self):
+        # """ CNat Source Nat v4 """
+        self.sourcenat_test_tcp_udp_conf(TCP)
+        self.sourcenat_test_tcp_udp_conf(UDP)
+        self.sourcenat_test_icmp_err_conf()
+        self.sourcenat_test_icmp_echo4_conf()
+
+    def sourcenat_test_icmp_echo6_conf(self):
+        sports = [1234, 1235]
+        dports = [6661, 6662]
+
+        for nbr, remote_host in enumerate(self.pg1.remote_hosts):
+            client_addr = self.pg0.remote_hosts[0].ip6
+            remote_addr = self.pg1.remote_hosts[nbr].ip6
+            src_nat_addr = self.pg2.remote_hosts[0].ip6
+
+            # ping from pods to outside network
+            p1 = (
+                Ether(dst=self.pg0.local_mac,
+                      src=self.pg0.remote_hosts[0].mac) /
+                IPv6(src=client_addr, dst=remote_addr) /
+                ICMPv6EchoRequest(id=0xfeed) /
+                Raw())
+
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+
+            for rx in rxs:
+                self.assertEqual(rx[IPv6].src, src_nat_addr)
+                self.assert_packet_checksums_valid(rx)
+
+            received_id = rx[0][ICMPv6EchoRequest].id
+            # ping reply from outside to pods
+            p2 = (
+                Ether(dst=self.pg1.local_mac,
+                      src=self.pg1.remote_hosts[nbr].mac) /
+                IPv6(src=remote_addr, dst=src_nat_addr) /
+                ICMPv6EchoReply(id=received_id))
+            rxs = self.send_and_expect(
+                self.pg1,
+                p2 * N_PKTS,
+                self.pg0)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IPv6].src, remote_addr)
+                self.assertEqual(rx[ICMPv6EchoReply].id, 0xfeed)
+
+    def sourcenat_test_icmp_echo4_conf(self):
+        sports = [1234, 1235]
+        dports = [6661, 6662]
+
+        for nbr, remote_host in enumerate(self.pg1.remote_hosts):
+            IP46 = IP
+            client_addr = self.pg0.remote_hosts[0].ip4
+            remote_addr = self.pg1.remote_hosts[nbr].ip4
+            src_nat_addr = self.pg2.remote_hosts[0].ip4
+
+            # ping from pods to outside network
+            p1 = (
+                Ether(dst=self.pg0.local_mac,
+                      src=self.pg0.remote_hosts[0].mac) /
+                IP46(src=client_addr, dst=remote_addr) /
+                ICMP(type=8, id=0xfeed) /
+                Raw())
+
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP46].src, src_nat_addr)
+                self.assert_packet_checksums_valid(rx)
+
+            received_id = rx[0][ICMP].id
+            # ping reply from outside to pods
+            p2 = (
+                Ether(dst=self.pg1.local_mac,
+                      src=self.pg1.remote_hosts[nbr].mac) /
+                IP46(src=remote_addr, dst=src_nat_addr) /
+                ICMP(type=0, id=received_id))
+            rxs = self.send_and_expect(
+                self.pg1,
+                p2 * N_PKTS,
+                self.pg0)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].src, remote_addr)
+                self.assertEqual(rx[ICMP].id, 0xfeed)
+
+    def sourcenat_test_icmp_err_conf(self, isV6=False):
+        sports = [1234, 1235]
+        dports = [6661, 6662]
+
+        for nbr, remote_host in enumerate(self.pg1.remote_hosts):
+            if isV6:
+                IP46 = IPv6
+                client_addr = self.pg0.remote_hosts[0].ip6
+                remote_addr = self.pg1.remote_hosts[nbr].ip6
+                src_nat_addr = self.pg2.remote_hosts[0].ip6
+                ICMP46 = ICMPv6DestUnreach
+                ICMPelem = ICMPv6DestUnreach(code=1)
+                IP46error = IPerror6
+            else:
+                IP46 = IP
+                client_addr = self.pg0.remote_hosts[0].ip4
+                remote_addr = self.pg1.remote_hosts[nbr].ip4
+                src_nat_addr = self.pg2.remote_hosts[0].ip4
+                IP46error = IPerror
+                ICMP46 = ICMP
+                ICMPelem = ICMP(type=11)
+
+            # from pods to outside network
+            p1 = (
+                Ether(dst=self.pg0.local_mac,
+                      src=self.pg0.remote_hosts[0].mac) /
+                IP46(src=client_addr, dst=remote_addr) /
+                TCP(sport=sports[nbr], dport=dports[nbr]) /
+                Raw())
+
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, remote_addr)
+                self.assertEqual(rx[TCP].dport, dports[nbr])
+                self.assertEqual(rx[IP46].src, src_nat_addr)
+                sport = rx[TCP].sport
+
+            InnerIP = rxs[0][IP46]
+            # from outside to pods, ICMP error
+            p2 = (
+                Ether(dst=self.pg1.local_mac,
+                      src=self.pg1.remote_hosts[nbr].mac) /
+                IP46(src=remote_addr, dst=src_nat_addr) /
+                ICMPelem / InnerIP)
+
+            rxs = self.send_and_expect(
+                self.pg1,
+                p2 * N_PKTS,
+                self.pg0)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].src, remote_addr)
+                self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
+                self.assertEqual(rx[ICMP46][IP46error].dst, remote_addr)
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPerror].sport, sports[nbr])
+                self.assertEqual(rx[ICMP46][IP46error]
+                                 [TCPerror].dport, dports[nbr])
+
+    def sourcenat_test_tcp_udp_conf(self, l4p, isV6=False):
+        sports = [1234, 1235]
+        dports = [6661, 6662]
+
+        for nbr, remote_host in enumerate(self.pg1.remote_hosts):
+            if isV6:
+                IP46 = IPv6
+                client_addr = self.pg0.remote_hosts[0].ip6
+                remote_addr = self.pg1.remote_hosts[nbr].ip6
+                src_nat_addr = self.pg2.remote_hosts[0].ip6
+                exclude_prefix = ip_network(
+                    "%s/100" % remote_addr, strict=False)
+            else:
+                IP46 = IP
+                client_addr = self.pg0.remote_hosts[0].ip4
+                remote_addr = self.pg1.remote_hosts[nbr].ip4
+                src_nat_addr = self.pg2.remote_hosts[0].ip4
+                exclude_prefix = ip_network(
+                    "%s/16" % remote_addr, strict=False)
+            # from pods to outside network
+            p1 = (
+                Ether(dst=self.pg0.local_mac,
+                      src=self.pg0.remote_hosts[0].mac) /
+                IP46(src=client_addr, dst=remote_addr) /
+                l4p(sport=sports[nbr], dport=dports[nbr]) /
+                Raw())
+
+            self.vapi.cli("trace add pg-input 1")
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+            self.logger.info(self.vapi.cli("show trace max 1"))
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, remote_addr)
+                self.assertEqual(rx[l4p].dport, dports[nbr])
+                self.assertEqual(rx[IP46].src, src_nat_addr)
+                sport = rx[l4p].sport
+
+            # from outside to pods
+            p2 = (
+                Ether(dst=self.pg1.local_mac,
+                      src=self.pg1.remote_hosts[nbr].mac) /
+                IP46(src=remote_addr, dst=src_nat_addr) /
+                l4p(sport=dports[nbr], dport=sport) /
+                Raw())
+
+            rxs = self.send_and_expect(
+                self.pg1,
+                p2 * N_PKTS,
+                self.pg0)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, client_addr)
+                self.assertEqual(rx[l4p].dport, sports[nbr])
+                self.assertEqual(rx[l4p].sport, dports[nbr])
+                self.assertEqual(rx[IP46].src, remote_addr)
+
+            # add remote host to exclude list
+            self.vapi.cnat_snat_policy_add_del_exclude_pfx(
+                prefix=exclude_prefix, is_add=1)
+            self.vapi.cnat_session_purge()
+
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, remote_addr)
+                self.assertEqual(rx[l4p].dport, dports[nbr])
+                self.assertEqual(rx[IP46].src, client_addr)
+
+            # remove remote host from exclude list
+            self.vapi.cnat_snat_policy_add_del_exclude_pfx(
+                prefix=exclude_prefix, is_add=0)
+            self.vapi.cnat_session_purge()
+
+            rxs = self.send_and_expect(
+                self.pg0,
+                p1 * N_PKTS,
+                self.pg1)
+
+            for rx in rxs:
+                self.assert_packet_checksums_valid(rx)
+                self.assertEqual(rx[IP46].dst, remote_addr)
+                self.assertEqual(rx[l4p].dport, dports[nbr])
+                self.assertEqual(rx[IP46].src, src_nat_addr)
+
+            self.vapi.cnat_session_purge()
+
+
+class TestCNatDHCP(VppTestCase):
+    """ CNat Translation """
+    extra_vpp_punt_config = ["cnat", "{",
+                             "session-db-buckets", "64",
+                             "session-cleanup-timeout", "0.1",
+                             "session-max-age", "1",
+                             "tcp-max-age", "1",
+                             "scanner", "off", "}"]
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCNatDHCP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCNatDHCP, cls).tearDownClass()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.admin_down()
+        super(TestCNatDHCP, self).tearDown()
+
+    def create_translation(self, vip_pg, *args, is_v6=False):
+        vip = Ep(sw_if_index=vip_pg.sw_if_index, is_v6=is_v6)
+        paths = []
+        for (src_pg, dst_pg) in args:
+            paths.append(EpTuple(
+                Ep.from_pg(src_pg, is_v6=is_v6),
+                Ep.from_pg(dst_pg, is_v6=is_v6)
+            ))
+        t1 = VppCNatTranslation(self, TCP, vip, paths)
+        t1.add_vpp_config()
+        return t1
+
+    def make_addr(self, sw_if_index, i, is_v6):
+        if is_v6:
+            return "fd01:%x::%u" % (sw_if_index, i + 1)
+        else:
+            return "172.16.%u.%u" % (sw_if_index, i)
+
+    def make_prefix(self, sw_if_index, i, is_v6):
+        if is_v6:
+            return "%s/128" % self.make_addr(sw_if_index, i, is_v6)
+        else:
+            return "%s/32" % self.make_addr(sw_if_index, i, is_v6)
+
+    def check_resolved(self, tr, vip_pg, *args, i=0, is_v6=False):
+        qt1 = tr.query_vpp_config()
+        self.assertEqual(str(qt1.vip.addr), self.make_addr(
+            vip_pg.sw_if_index, i, is_v6))
+        for (src_pg, dst_pg), path in zip(args, qt1.paths):
+            if src_pg:
+                self.assertEqual(str(path.src_ep.addr), self.make_addr(
+                    src_pg.sw_if_index, i, is_v6))
+            if dst_pg:
+                self.assertEqual(str(path.dst_ep.addr), self.make_addr(
+                    dst_pg.sw_if_index, i, is_v6))
+
+    def config_ips(self, rng, is_add=1, is_v6=False):
+        for pg, i in product(self.pg_interfaces, rng):
+            self.vapi.sw_interface_add_del_address(
+                sw_if_index=pg.sw_if_index,
+                prefix=self.make_prefix(pg.sw_if_index, i, is_v6),
+                is_add=is_add)
+
+    def test_dhcp_v4(self):
+        self.create_pg_interfaces(range(5))
+        for i in self.pg_interfaces:
+            i.admin_up()
+        pglist = (self.pg0, (self.pg1, self.pg2), (self.pg1, self.pg4))
+        t1 = self.create_translation(*pglist)
+        self.config_ips([0])
+        self.check_resolved(t1, *pglist)
+        self.config_ips([1])
+        self.config_ips([0], is_add=0)
+        self.check_resolved(t1, *pglist, i=1)
+        self.config_ips([1], is_add=0)
+        t1.remove_vpp_config()
+
+    def test_dhcp_v6(self):
+        self.create_pg_interfaces(range(5))
+        for i in self.pg_interfaces:
+            i.admin_up()
+        pglist = (self.pg0, (self.pg1, self.pg2), (self.pg1, self.pg4))
+        t1 = self.create_translation(*pglist, is_v6=True)
+        self.config_ips([0], is_v6=True)
+        self.check_resolved(t1, *pglist, is_v6=True)
+        self.config_ips([1], is_v6=True)
+        self.config_ips([0], is_add=0, is_v6=True)
+        self.check_resolved(t1, *pglist, i=1, is_v6=True)
+        self.config_ips([1], is_add=0, is_v6=True)
+        t1.remove_vpp_config()
+
+    def test_dhcp_snat(self):
+        self.create_pg_interfaces(range(1))
+        for i in self.pg_interfaces:
+            i.admin_up()
+        self.vapi.cnat_set_snat_addresses(sw_if_index=self.pg0.sw_if_index)
+        self.config_ips([0], is_v6=False)
+        self.config_ips([0], is_v6=True)
+        r = self.vapi.cnat_get_snat_addresses()
+        self.assertEqual(str(r.snat_ip4), self.make_addr(
+            self.pg0.sw_if_index, 0, False))
+        self.assertEqual(str(r.snat_ip6), self.make_addr(
+            self.pg0.sw_if_index, 0, True))
+        self.config_ips([1], is_v6=False)
+        self.config_ips([1], is_v6=True)
+        self.config_ips([0], is_add=0, is_v6=False)
+        self.config_ips([0], is_add=0, is_v6=True)
+        r = self.vapi.cnat_get_snat_addresses()
+        self.assertEqual(str(r.snat_ip4), self.make_addr(
+            self.pg0.sw_if_index, 1, False))
+        self.assertEqual(str(r.snat_ip6), self.make_addr(
+            self.pg0.sw_if_index, 1, True))
+        self.config_ips([1], is_add=0, is_v6=False)
+        self.config_ips([1], is_add=0, is_v6=True)
+        self.vapi.cnat_set_snat_addresses(sw_if_index=INVALID_INDEX)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_counters.py b/test/test_counters.py
new file mode 100644
index 0000000..e4cb856
--- /dev/null
+++ b/test/test_counters.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+from framework import VppTestCase
+from framework import tag_fixme_vpp_workers
+
+
+@tag_fixme_vpp_workers
+class TestCounters(VppTestCase):
+    """ Counters C Unit Tests """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCounters, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCounters, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestCounters, self).setUp()
+
+    def tearDown(self):
+        super(TestCounters, self).tearDown()
+
+    def test_counter_simple_expand(self):
+        """ Simple Counter Expand """
+        error = self.vapi.cli("test counter simple expand")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
+
+    def test_counter_combined_expand(self):
+        """ Combined Counter Expand """
+        error = self.vapi.cli("test counter combined expand")
+
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn('failed', error)
diff --git a/test/test_crypto.py b/test/test_crypto.py
new file mode 100644
index 0000000..aa62dba
--- /dev/null
+++ b/test/test_crypto.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+
+
+class TestCrypto(VppTestCase):
+    """ Crypto Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestCrypto, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestCrypto, cls).tearDownClass()
+
+    def test_crypto(self):
+        """ Crypto Unit Tests """
+        error = self.vapi.cli("test crypto")
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn("FAIL", error)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_det44.py b/test/test_det44.py
new file mode 100644
index 0000000..ced7746
--- /dev/null
+++ b/test/test_det44.py
@@ -0,0 +1,682 @@
+#!/usr/bin/env python3
+
+import socket
+import struct
+import unittest
+import scapy.compat
+from time import sleep
+from framework import VppTestCase, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, UDPerror
+from scapy.layers.l2 import Ether
+from util import ppp
+
+
+class TestDET44(VppTestCase):
+    """ Deterministic NAT Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDET44, cls).setUpClass()
+        cls.vapi.cli("set log class det44 level debug")
+
+        cls.tcp_port_in = 6303
+        cls.tcp_external_port = 6303
+        cls.udp_port_in = 6304
+        cls.udp_external_port = 6304
+        cls.icmp_id_in = 6305
+        cls.nat_addr = '10.0.0.3'
+
+        cls.create_pg_interfaces(range(3))
+        cls.interfaces = list(cls.pg_interfaces)
+
+        for i in cls.interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+        cls.pg0.generate_remote_hosts(2)
+        cls.pg0.configure_ipv4_neighbors()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDET44, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDET44, self).setUp()
+        self.vapi.det44_plugin_enable_disable(enable=1)
+
+    def tearDown(self):
+        super(TestDET44, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.det44_plugin_enable_disable(enable=0)
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show det44 interfaces"))
+        self.logger.info(self.vapi.cli("show det44 timeouts"))
+        self.logger.info(self.vapi.cli("show det44 mappings"))
+        self.logger.info(self.vapi.cli("show det44 sessions"))
+
+    def verify_capture_in(self, capture, in_if):
+        """
+        Verify captured packets on inside network
+
+        :param capture: Captured packets
+        :param in_if: Inside interface
+        """
+        fired = False
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP].dst, in_if.remote_ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                fired = True
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+        if fired:
+            raise
+
+    def verify_ipfix_max_entries_per_user(self, data, limit, src_addr):
+        """
+        Verify IPFIX maximum entries per user exceeded event
+
+        :param data: Decoded IPFIX data records
+        :param limit: Number of maximum entries per user
+        :param src_addr: IPv4 source address
+        """
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        self.assertEqual(scapy.compat.orb(record[230]), 13)
+        # natQuotaExceededEvent
+        self.assertEqual(struct.pack("I", 3), record[466])
+        # maxEntriesPerUser
+        self.assertEqual(struct.pack("I", limit), record[473])
+        # sourceIPv4Address
+        self.assertEqual(socket.inet_pton(socket.AF_INET, src_addr), record[8])
+
+    def initiate_tcp_session(self, in_if, out_if):
+        """
+        Initiates TCP session 3 WAY HAND SHAKE
+
+        :param in_if: Inside interface
+        :param out_if: Outside interface
+        """
+
+        # SYN packet in->out
+        p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+             flags="S"))
+        in_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = out_if.get_capture(1)
+        p = capture[0]
+        self.tcp_port_out = p[TCP].sport
+
+        # SYN + ACK packet out->in
+        p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
+             IP(src=out_if.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+             flags="SA"))
+        out_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        in_if.get_capture(1)
+
+        # ACK packet in->out
+        p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+             flags="A"))
+        in_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        out_if.get_capture(1)
+
+    def create_stream_in(self, in_if, out_if, ttl=64):
+        """
+        Create packet stream for inside network
+
+        :param in_if: Inside interface
+        :param out_if: Outside interface
+        :param ttl: TTL of generated packets
+        """
+        pkts = []
+        # TCP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
+        pkts.append(p)
+
+        # UDP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+             UDP(sport=self.udp_port_in, dport=self.udp_external_port))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+
+        return pkts
+
+    def create_stream_out(self, out_if, dst_ip=None, ttl=64):
+        """
+        Create packet stream for outside network
+
+        :param out_if: Outside interface
+        :param dst_ip: Destination IP address (Default use global NAT address)
+        :param ttl: TTL of generated packets
+        """
+        if dst_ip is None:
+            dst_ip = self.nat_addr
+        pkts = []
+        # TCP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(dport=self.tcp_port_out, sport=self.tcp_external_port))
+        pkts.append(p)
+
+        # UDP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(dport=self.udp_port_out, sport=self.udp_external_port))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=self.icmp_external_id, type='echo-reply'))
+        pkts.append(p)
+
+        return pkts
+
+    def verify_capture_out(self, capture, nat_ip=None):
+        """
+        Verify captured packets on outside network
+
+        :param capture: Captured packets
+        :param nat_ip: Translated IP address (Default use global NAT address)
+        :param same_port: Source port number is not translated (Default False)
+        """
+        if nat_ip is None:
+            nat_ip = self.nat_addr
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, nat_ip)
+                if packet.haslayer(TCP):
+                    self.tcp_port_out = packet[TCP].sport
+                elif packet.haslayer(UDP):
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    self.icmp_external_id = packet[ICMP].id
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+    def test_deterministic_mode(self):
+        """ NAT plugin run deterministic mode """
+        in_addr = '172.16.255.0'
+        out_addr = '172.17.255.50'
+        in_addr_t = '172.16.255.20'
+        in_plen = 24
+        out_plen = 32
+
+        self.vapi.det44_add_del_map(is_add=1, in_addr=in_addr,
+                                    in_plen=in_plen, out_addr=out_addr,
+                                    out_plen=out_plen)
+
+        rep1 = self.vapi.det44_forward(in_addr_t)
+        self.assertEqual(str(rep1.out_addr), out_addr)
+        rep2 = self.vapi.det44_reverse(rep1.out_port_hi, out_addr)
+
+        self.assertEqual(str(rep2.in_addr), in_addr_t)
+
+        deterministic_mappings = self.vapi.det44_map_dump()
+        self.assertEqual(len(deterministic_mappings), 1)
+        dsm = deterministic_mappings[0]
+        self.assertEqual(in_addr, str(dsm.in_addr))
+        self.assertEqual(in_plen, dsm.in_plen)
+        self.assertEqual(out_addr, str(dsm.out_addr))
+        self.assertEqual(out_plen, dsm.out_plen)
+
+    def test_set_timeouts(self):
+        """ Set deterministic NAT timeouts """
+        timeouts_before = self.vapi.det44_get_timeouts()
+
+        self.vapi.det44_set_timeouts(
+            udp=timeouts_before.udp + 10,
+            tcp_established=timeouts_before.tcp_established + 10,
+            tcp_transitory=timeouts_before.tcp_transitory + 10,
+            icmp=timeouts_before.icmp + 10)
+
+        timeouts_after = self.vapi.det44_get_timeouts()
+
+        self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
+        self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
+        self.assertNotEqual(timeouts_before.tcp_established,
+                            timeouts_after.tcp_established)
+        self.assertNotEqual(timeouts_before.tcp_transitory,
+                            timeouts_after.tcp_transitory)
+
+    def test_in(self):
+        """ DET44 translation test (TCP, UDP, ICMP) """
+
+        nat_ip = "10.0.0.10"
+
+        self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+                                    in_plen=32,
+                                    out_addr=socket.inet_aton(nat_ip),
+                                    out_plen=32)
+
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1, nat_ip)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # session dump test
+        sessions = self.vapi.det44_session_dump(self.pg0.remote_ip4)
+        self.assertEqual(len(sessions), 3)
+
+        # TCP session
+        s = sessions[0]
+        self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+        self.assertEqual(s.in_port, self.tcp_port_in)
+        self.assertEqual(s.out_port, self.tcp_port_out)
+        self.assertEqual(s.ext_port, self.tcp_external_port)
+
+        # UDP session
+        s = sessions[1]
+        self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+        self.assertEqual(s.in_port, self.udp_port_in)
+        self.assertEqual(s.out_port, self.udp_port_out)
+        self.assertEqual(s.ext_port, self.udp_external_port)
+
+        # ICMP session
+        s = sessions[2]
+        self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+        self.assertEqual(s.in_port, self.icmp_id_in)
+        self.assertEqual(s.out_port, self.icmp_external_id)
+
+    def test_multiple_users(self):
+        """ Deterministic NAT multiple users """
+
+        nat_ip = "10.0.0.10"
+        port_in = 80
+        external_port = 6303
+
+        host0 = self.pg0.remote_hosts[0]
+        host1 = self.pg0.remote_hosts[1]
+
+        self.vapi.det44_add_del_map(is_add=1, in_addr=host0.ip4, in_plen=24,
+                                    out_addr=socket.inet_aton(nat_ip),
+                                    out_plen=32)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+
+        # host0 to out
+        p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
+             IP(src=host0.ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=port_in, dport=external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, nat_ip)
+            self.assertEqual(ip.dst, self.pg1.remote_ip4)
+            self.assertEqual(tcp.dport, external_port)
+            port_out0 = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # host1 to out
+        p = (Ether(src=host1.mac, dst=self.pg0.local_mac) /
+             IP(src=host1.ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=port_in, dport=external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, nat_ip)
+            self.assertEqual(ip.dst, self.pg1.remote_ip4)
+            self.assertEqual(tcp.dport, external_port)
+            port_out1 = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        dms = self.vapi.det44_map_dump()
+        self.assertEqual(1, len(dms))
+        self.assertEqual(2, dms[0].ses_num)
+
+        # out to host0
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=nat_ip) /
+             TCP(sport=external_port, dport=port_out0))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg1.remote_ip4)
+            self.assertEqual(ip.dst, host0.ip4)
+            self.assertEqual(tcp.dport, port_in)
+            self.assertEqual(tcp.sport, external_port)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # out to host1
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=nat_ip) /
+             TCP(sport=external_port, dport=port_out1))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg1.remote_ip4)
+            self.assertEqual(ip.dst, host1.ip4)
+            self.assertEqual(tcp.dport, port_in)
+            self.assertEqual(tcp.sport, external_port)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet", p))
+            raise
+
+        # session close api test
+        self.vapi.det44_close_session_out(socket.inet_aton(nat_ip),
+                                          port_out1,
+                                          self.pg1.remote_ip4,
+                                          external_port)
+        dms = self.vapi.det44_map_dump()
+        self.assertEqual(dms[0].ses_num, 1)
+
+        self.vapi.det44_close_session_in(host0.ip4,
+                                         port_in,
+                                         self.pg1.remote_ip4,
+                                         external_port)
+        dms = self.vapi.det44_map_dump()
+        self.assertEqual(dms[0].ses_num, 0)
+
+    def test_tcp_session_close_detection_in(self):
+        """ DET44 TCP session close from inside network """
+        self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+                                    in_plen=32,
+                                    out_addr=socket.inet_aton(self.nat_addr),
+                                    out_plen=32)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+
+        self.initiate_tcp_session(self.pg0, self.pg1)
+
+        # close the session from inside
+        try:
+            # FIN packet in -> out
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                     flags="F"))
+            self.pg0.add_stream(p)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg1.get_capture(1)
+
+            pkts = []
+
+            # ACK packet out -> in
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+                     flags="A"))
+            pkts.append(p)
+
+            # FIN packet out -> in
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+                     flags="F"))
+            pkts.append(p)
+
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg0.get_capture(2)
+
+            # ACK packet in -> out
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                     flags="A"))
+            self.pg0.add_stream(p)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg1.get_capture(1)
+
+            # Check if deterministic NAT44 closed the session
+            dms = self.vapi.det44_map_dump()
+            self.assertEqual(0, dms[0].ses_num)
+        except:
+            self.logger.error("TCP session termination failed")
+            raise
+
+    def test_tcp_session_close_detection_out(self):
+        """ Deterministic NAT TCP session close from outside network """
+        self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+                                    in_plen=32,
+                                    out_addr=socket.inet_aton(self.nat_addr),
+                                    out_plen=32)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+
+        self.initiate_tcp_session(self.pg0, self.pg1)
+
+        # close the session from outside
+        try:
+            # FIN packet out -> in
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+                     flags="F"))
+            self.pg1.add_stream(p)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg0.get_capture(1)
+
+            pkts = []
+
+            # ACK packet in -> out
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                     flags="A"))
+            pkts.append(p)
+
+            # ACK packet in -> out
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                     flags="F"))
+            pkts.append(p)
+
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg1.get_capture(2)
+
+            # ACK packet out -> in
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+                     flags="A"))
+            self.pg1.add_stream(p)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.pg0.get_capture(1)
+
+            # Check if deterministic NAT44 closed the session
+            dms = self.vapi.det44_map_dump()
+            self.assertEqual(0, dms[0].ses_num)
+        except:
+            self.logger.error("TCP session termination failed")
+            raise
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_session_timeout(self):
+        """ Deterministic NAT session timeouts """
+        self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+                                    in_plen=32,
+                                    out_addr=socket.inet_aton(self.nat_addr),
+                                    out_plen=32)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+
+        self.initiate_tcp_session(self.pg0, self.pg1)
+        self.vapi.det44_set_timeouts(udp=5, tcp_established=5,
+                                     tcp_transitory=5, icmp=5)
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(len(pkts))
+        sleep(15)
+
+        dms = self.vapi.det44_map_dump()
+        self.assertEqual(0, dms[0].ses_num)
+
+    # TODO: ipfix needs to be separated from NAT base plugin
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_session_limit_per_user(self):
+        """ Deterministic NAT maximum sessions per user limit """
+        self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+                                    in_plen=32,
+                                    out_addr=socket.inet_aton(self.nat_addr),
+                                    out_plen=32)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, is_inside=1)
+        self.vapi.det44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1, is_inside=0)
+        self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4,
+                                     src_address=self.pg2.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10)
+        self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
+                                           enable=1)
+
+        pkts = []
+        for port in range(1025, 2025):
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 UDP(sport=port, dport=port))
+            pkts.append(p)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(len(pkts))
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             UDP(sport=3001, dport=3002))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        # verify ICMP error packet
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        self.assertTrue(p.haslayer(ICMP))
+        icmp = p[ICMP]
+        self.assertEqual(icmp.type, 3)
+        self.assertEqual(icmp.code, 1)
+        self.assertTrue(icmp.haslayer(IPerror))
+        inner_ip = icmp[IPerror]
+        self.assertEqual(inner_ip[UDPerror].sport, 3001)
+        self.assertEqual(inner_ip[UDPerror].dport, 3002)
+
+        dms = self.vapi.det44_map_dump()
+
+        self.assertEqual(1000, dms[0].ses_num)
+
+        # verify IPFIX logging
+        self.vapi.ipfix_flush()
+        sleep(1)
+        capture = self.pg2.get_capture(2)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_max_entries_per_user(data,
+                                                       1000,
+                                                       self.pg0.remote_ip4)
+        self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
+                                           enable=0)
diff --git a/test/test_dhcp.py b/test/test_dhcp.py
new file mode 100644
index 0000000..e17b004
--- /dev/null
+++ b/test/test_dhcp.py
@@ -0,0 +1,1686 @@
+#!/usr/bin/env python3
+
+import unittest
+import socket
+import struct
+import six
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import tag_run_solo
+from vpp_neighbor import VppNeighbor
+from vpp_ip_route import find_route, VppIpTable
+from util import mk_ll_addr
+import scapy.compat
+from scapy.layers.l2 import Ether, getmacbyip, ARP, Dot1Q
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.layers.inet6 import IPv6, in6_getnsmac
+from scapy.utils6 import in6_mactoifaceid
+from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
+from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
+    DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
+    DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr, DHCP6_Request
+from socket import AF_INET, AF_INET6, inet_pton, inet_ntop
+from scapy.utils6 import in6_ptop
+from vpp_papi import mac_pton, VppEnum
+from vpp_sub_interface import VppDot1QSubint
+from vpp_qos import VppQosEgressMap, VppQosMark
+from vpp_dhcp import VppDHCPClient, VppDHCPProxy
+
+
+DHCP4_CLIENT_PORT = 68
+DHCP4_SERVER_PORT = 67
+DHCP6_CLIENT_PORT = 547
+DHCP6_SERVER_PORT = 546
+
+
+@tag_run_solo
+class TestDHCP(VppTestCase):
+    """ DHCP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDHCP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDHCP, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDHCP, self).setUp()
+
+        # create 6 pg interfaces for pg0 to pg5
+        self.create_pg_interfaces(range(6))
+        self.tables = []
+
+        # pg0 to 2 are IP configured in VRF 0, 1 and 2.
+        # pg3 to 5 are non IP-configured in VRF 0, 1 and 2.
+        table_id = 0
+        for table_id in range(1, 4):
+            tbl4 = VppIpTable(self, table_id)
+            tbl4.add_vpp_config()
+            self.tables.append(tbl4)
+            tbl6 = VppIpTable(self, table_id, is_ip6=1)
+            tbl6.add_vpp_config()
+            self.tables.append(tbl6)
+
+        table_id = 0
+        for i in self.pg_interfaces[:3]:
+            i.admin_up()
+            i.set_table_ip4(table_id)
+            i.set_table_ip6(table_id)
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+            table_id += 1
+
+        table_id = 0
+        for i in self.pg_interfaces[3:]:
+            i.admin_up()
+            i.set_table_ip4(table_id)
+            i.set_table_ip6(table_id)
+            table_id += 1
+
+    def tearDown(self):
+        for i in self.pg_interfaces[:3]:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+
+        for i in self.pg_interfaces:
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+            i.admin_down()
+        super(TestDHCP, self).tearDown()
+
+    def verify_dhcp_has_option(self, pkt, option, value):
+        dhcp = pkt[DHCP]
+        found = False
+
+        for i in dhcp.options:
+            if isinstance(i, tuple):
+                if i[0] == option:
+                    self.assertEqual(i[1], value)
+                    found = True
+
+        self.assertTrue(found)
+
+    def validate_relay_options(self, pkt, intf, ip_addr, vpn_id, fib_id, oui):
+        dhcp = pkt[DHCP]
+        found = 0
+        data = []
+        id_len = len(vpn_id)
+
+        for i in dhcp.options:
+            if isinstance(i, tuple):
+                if i[0] == "relay_agent_Information":
+                    #
+                    # There are two sb-options present - each of length 6.
+                    #
+                    data = i[1]
+                    if oui != 0:
+                        self.assertEqual(len(data), 24)
+                    elif len(vpn_id) > 0:
+                        self.assertEqual(len(data), len(vpn_id) + 17)
+                    else:
+                        self.assertEqual(len(data), 12)
+
+                    #
+                    # First sub-option is ID 1, len 4, then encoded
+                    #  sw_if_index. This test uses low valued indicies
+                    # so [2:4] are 0.
+                    # The ID space is VPP internal - so no matching value
+                    # scapy
+                    #
+                    self.assertEqual(six.byte2int(data[0:1]), 1)
+                    self.assertEqual(six.byte2int(data[1:2]), 4)
+                    self.assertEqual(six.byte2int(data[2:3]), 0)
+                    self.assertEqual(six.byte2int(data[3:4]), 0)
+                    self.assertEqual(six.byte2int(data[4:5]), 0)
+                    self.assertEqual(six.byte2int(data[5:6]),
+                                     intf._sw_if_index)
+
+                    #
+                    # next sub-option is the IP address of the client side
+                    # interface.
+                    # sub-option ID=5, length (of a v4 address)=4
+                    #
+                    claddr = socket.inet_pton(AF_INET, ip_addr)
+
+                    self.assertEqual(six.byte2int(data[6:7]), 5)
+                    self.assertEqual(six.byte2int(data[7:8]), 4)
+                    self.assertEqual(data[8], claddr[0])
+                    self.assertEqual(data[9], claddr[1])
+                    self.assertEqual(data[10], claddr[2])
+                    self.assertEqual(data[11], claddr[3])
+
+                    if oui != 0:
+                        # sub-option 151 encodes vss_type 1,
+                        # the 3 byte oui and the 4 byte fib_id
+                        self.assertEqual(id_len, 0)
+                        self.assertEqual(six.byte2int(data[12:13]), 151)
+                        self.assertEqual(six.byte2int(data[13:14]), 8)
+                        self.assertEqual(six.byte2int(data[14:15]), 1)
+                        self.assertEqual(six.byte2int(data[15:16]), 0)
+                        self.assertEqual(six.byte2int(data[16:17]), 0)
+                        self.assertEqual(six.byte2int(data[17:18]), oui)
+                        self.assertEqual(six.byte2int(data[18:19]), 0)
+                        self.assertEqual(six.byte2int(data[19:20]), 0)
+                        self.assertEqual(six.byte2int(data[20:21]), 0)
+                        self.assertEqual(six.byte2int(data[21:22]), fib_id)
+
+                        # VSS control sub-option
+                        self.assertEqual(six.byte2int(data[22:23]), 152)
+                        self.assertEqual(six.byte2int(data[23:24]), 0)
+
+                    if id_len > 0:
+                        # sub-option 151 encode vss_type of 0
+                        # followerd by vpn_id in ascii
+                        self.assertEqual(oui, 0)
+                        self.assertEqual(six.byte2int(data[12:13]), 151)
+                        self.assertEqual(six.byte2int(data[13:14]), id_len + 1)
+                        self.assertEqual(six.byte2int(data[14:15]), 0)
+                        self.assertEqual(data[15:15 + id_len].decode('ascii'),
+                                         vpn_id)
+
+                        # VSS control sub-option
+                        self.assertEqual(six.byte2int(data[15 + len(vpn_id):
+                                                           16 + len(vpn_id)]),
+                                         152)
+                        self.assertEqual(six.byte2int(data[16 + len(vpn_id):
+                                                           17 + len(vpn_id)]),
+                                         0)
+
+                    found = 1
+        self.assertTrue(found)
+
+        return data
+
+    def verify_dhcp_msg_type(self, pkt, name):
+        dhcp = pkt[DHCP]
+        found = False
+        for o in dhcp.options:
+            if isinstance(o, tuple):
+                if o[0] == "message-type" \
+                   and DHCPTypes[o[1]] == name:
+                    found = True
+        self.assertTrue(found)
+
+    def verify_dhcp_offer(self, pkt, intf, vpn_id="", fib_id=0, oui=0):
+        ether = pkt[Ether]
+        self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
+        self.assertEqual(ether.src, intf.local_mac)
+
+        ip = pkt[IP]
+        self.assertEqual(ip.dst, "255.255.255.255")
+        self.assertEqual(ip.src, intf.local_ip4)
+
+        udp = pkt[UDP]
+        self.assertEqual(udp.dport, DHCP4_CLIENT_PORT)
+        self.assertEqual(udp.sport, DHCP4_SERVER_PORT)
+
+        self.verify_dhcp_msg_type(pkt, "offer")
+        data = self.validate_relay_options(pkt, intf, intf.local_ip4,
+                                           vpn_id, fib_id, oui)
+
+    def verify_orig_dhcp_pkt(self, pkt, intf, dscp, l2_bc=True):
+        ether = pkt[Ether]
+        if l2_bc:
+            self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
+        else:
+            self.assertEqual(ether.dst, intf.remote_mac)
+        self.assertEqual(ether.src, intf.local_mac)
+
+        ip = pkt[IP]
+
+        if (l2_bc):
+            self.assertEqual(ip.dst, "255.255.255.255")
+            self.assertEqual(ip.src, "0.0.0.0")
+        else:
+            self.assertEqual(ip.dst, intf.remote_ip4)
+            self.assertEqual(ip.src, intf.local_ip4)
+        self.assertEqual(ip.tos, dscp)
+
+        udp = pkt[UDP]
+        self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
+        self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
+
+    def verify_orig_dhcp_discover(self, pkt, intf, hostname, client_id=None,
+                                  broadcast=True, dscp=0):
+        self.verify_orig_dhcp_pkt(pkt, intf, dscp)
+
+        self.verify_dhcp_msg_type(pkt, "discover")
+        self.verify_dhcp_has_option(pkt, "hostname",
+                                    hostname.encode('ascii'))
+        if client_id:
+            client_id = '\x00' + client_id
+            self.verify_dhcp_has_option(pkt, "client_id",
+                                        client_id.encode('ascii'))
+        bootp = pkt[BOOTP]
+        self.assertEqual(bootp.ciaddr, "0.0.0.0")
+        self.assertEqual(bootp.giaddr, "0.0.0.0")
+        if broadcast:
+            self.assertEqual(bootp.flags, 0x8000)
+        else:
+            self.assertEqual(bootp.flags, 0x0000)
+
+    def verify_orig_dhcp_request(self, pkt, intf, hostname, ip,
+                                 broadcast=True,
+                                 l2_bc=True,
+                                 dscp=0):
+        self.verify_orig_dhcp_pkt(pkt, intf, dscp, l2_bc=l2_bc)
+
+        self.verify_dhcp_msg_type(pkt, "request")
+        self.verify_dhcp_has_option(pkt, "hostname",
+                                    hostname.encode('ascii'))
+        self.verify_dhcp_has_option(pkt, "requested_addr", ip)
+        bootp = pkt[BOOTP]
+
+        if l2_bc:
+            self.assertEqual(bootp.ciaddr, "0.0.0.0")
+        else:
+            self.assertEqual(bootp.ciaddr, intf.local_ip4)
+        self.assertEqual(bootp.giaddr, "0.0.0.0")
+
+        if broadcast:
+            self.assertEqual(bootp.flags, 0x8000)
+        else:
+            self.assertEqual(bootp.flags, 0x0000)
+
+    def verify_relayed_dhcp_discover(self, pkt, intf, src_intf=None,
+                                     fib_id=0, oui=0,
+                                     vpn_id="",
+                                     dst_mac=None, dst_ip=None):
+        if not dst_mac:
+            dst_mac = intf.remote_mac
+        if not dst_ip:
+            dst_ip = intf.remote_ip4
+
+        ether = pkt[Ether]
+        self.assertEqual(ether.dst, dst_mac)
+        self.assertEqual(ether.src, intf.local_mac)
+
+        ip = pkt[IP]
+        self.assertEqual(ip.dst, dst_ip)
+        self.assertEqual(ip.src, intf.local_ip4)
+
+        udp = pkt[UDP]
+        self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
+        self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
+
+        dhcp = pkt[DHCP]
+
+        is_discover = False
+        for o in dhcp.options:
+            if isinstance(o, tuple):
+                if o[0] == "message-type" \
+                   and DHCPTypes[o[1]] == "discover":
+                    is_discover = True
+        self.assertTrue(is_discover)
+
+        data = self.validate_relay_options(pkt, src_intf,
+                                           src_intf.local_ip4,
+                                           vpn_id,
+                                           fib_id, oui)
+        return data
+
+    def verify_dhcp6_solicit(self, pkt, intf,
+                             peer_ip, peer_mac,
+                             vpn_id="",
+                             fib_id=0,
+                             oui=0,
+                             dst_mac=None,
+                             dst_ip=None):
+        if not dst_mac:
+            dst_mac = intf.remote_mac
+        if not dst_ip:
+            dst_ip = in6_ptop(intf.remote_ip6)
+
+        ether = pkt[Ether]
+        self.assertEqual(ether.dst, dst_mac)
+        self.assertEqual(ether.src, intf.local_mac)
+
+        ip = pkt[IPv6]
+        self.assertEqual(in6_ptop(ip.dst), dst_ip)
+        self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
+
+        udp = pkt[UDP]
+        self.assertEqual(udp.dport, DHCP6_CLIENT_PORT)
+        self.assertEqual(udp.sport, DHCP6_SERVER_PORT)
+
+        relay = pkt[DHCP6_RelayForward]
+        self.assertEqual(in6_ptop(relay.peeraddr), in6_ptop(peer_ip))
+        oid = pkt[DHCP6OptIfaceId]
+        cll = pkt[DHCP6OptClientLinkLayerAddr]
+        self.assertEqual(cll.optlen, 8)
+        self.assertEqual(cll.lltype, 1)
+        self.assertEqual(cll.clladdr, peer_mac)
+
+        id_len = len(vpn_id)
+
+        if fib_id != 0:
+            self.assertEqual(id_len, 0)
+            vss = pkt[DHCP6OptVSS]
+            self.assertEqual(vss.optlen, 8)
+            self.assertEqual(vss.type, 1)
+            # the OUI and FIB-id are really 3 and 4 bytes resp.
+            # but the tested range is small
+            self.assertEqual(six.byte2int(vss.data[0:1]), 0)
+            self.assertEqual(six.byte2int(vss.data[1:2]), 0)
+            self.assertEqual(six.byte2int(vss.data[2:3]), oui)
+            self.assertEqual(six.byte2int(vss.data[3:4]), 0)
+            self.assertEqual(six.byte2int(vss.data[4:5]), 0)
+            self.assertEqual(six.byte2int(vss.data[5:6]), 0)
+            self.assertEqual(six.byte2int(vss.data[6:7]), fib_id)
+
+        if id_len > 0:
+            self.assertEqual(oui, 0)
+            vss = pkt[DHCP6OptVSS]
+            self.assertEqual(vss.optlen, id_len + 1)
+            self.assertEqual(vss.type, 0)
+            self.assertEqual(vss.data[0:id_len].decode('ascii'),
+                             vpn_id)
+
+        # the relay message should be an encoded Solicit
+        msg = pkt[DHCP6OptRelayMsg]
+        sol = DHCP6_Solicit()
+        self.assertEqual(msg.optlen, len(sol))
+        self.assertEqual(sol, msg[1])
+
+    def verify_dhcp6_advert(self, pkt, intf, peer):
+        ether = pkt[Ether]
+        self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
+        self.assertEqual(ether.src, intf.local_mac)
+
+        ip = pkt[IPv6]
+        self.assertEqual(in6_ptop(ip.dst), in6_ptop(peer))
+        self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
+
+        udp = pkt[UDP]
+        self.assertEqual(udp.dport, DHCP6_SERVER_PORT)
+        self.assertEqual(udp.sport, DHCP6_CLIENT_PORT)
+
+        # not sure why this is not decoding
+        # adv = pkt[DHCP6_Advertise]
+
+    def wait_for_no_route(self, address, length,
+                          n_tries=50, s_time=1):
+        while (n_tries):
+            if not find_route(self, address, length):
+                return True
+            n_tries = n_tries - 1
+            self.sleep(s_time)
+
+        return False
+
+    def test_dhcp_proxy(self):
+        """ DHCPv4 Proxy """
+
+        #
+        # Verify no response to DHCP request without DHCP config
+        #
+        p_disc_vrf0 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                             src=self.pg3.remote_mac) /
+                       IP(src="0.0.0.0", dst="255.255.255.255") /
+                       UDP(sport=DHCP4_CLIENT_PORT,
+                           dport=DHCP4_SERVER_PORT) /
+                       BOOTP(op=1) /
+                       DHCP(options=[('message-type', 'discover'), ('end')]))
+        pkts_disc_vrf0 = [p_disc_vrf0]
+        p_disc_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                             src=self.pg4.remote_mac) /
+                       IP(src="0.0.0.0", dst="255.255.255.255") /
+                       UDP(sport=DHCP4_CLIENT_PORT,
+                           dport=DHCP4_SERVER_PORT) /
+                       BOOTP(op=1) /
+                       DHCP(options=[('message-type', 'discover'), ('end')]))
+        pkts_disc_vrf1 = [p_disc_vrf1]
+        p_disc_vrf2 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                             src=self.pg5.remote_mac) /
+                       IP(src="0.0.0.0", dst="255.255.255.255") /
+                       UDP(sport=DHCP4_CLIENT_PORT,
+                           dport=DHCP4_SERVER_PORT) /
+                       BOOTP(op=1) /
+                       DHCP(options=[('message-type', 'discover'), ('end')]))
+        pkts_disc_vrf2 = [p_disc_vrf2]
+
+        self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
+                                        "DHCP with no configuration")
+        self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
+                                        "DHCP with no configuration")
+        self.send_and_assert_no_replies(self.pg5, pkts_disc_vrf2,
+                                        "DHCP with no configuration")
+
+        #
+        # Enable DHCP proxy in VRF 0
+        #
+        server_addr = self.pg0.remote_ip4
+        src_addr = self.pg0.local_ip4
+
+        Proxy = VppDHCPProxy(self, server_addr, src_addr, rx_vrf_id=0)
+        Proxy.add_vpp_config()
+
+        #
+        # Discover packets from the client are dropped because there is no
+        # IP address configured on the client facing interface
+        #
+        self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
+                                        "Discover DHCP no relay address")
+
+        #
+        # Inject a response from the server
+        #  dropped, because there is no IP addrees on the
+        #  client interfce to fill in the option.
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+             UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+             BOOTP(op=1) /
+             DHCP(options=[('message-type', 'offer'), ('end')]))
+        pkts = [p]
+
+        self.send_and_assert_no_replies(self.pg3, pkts,
+                                        "Offer DHCP no relay address")
+
+        #
+        # configure an IP address on the client facing interface
+        #
+        self.pg3.config_ip4()
+
+        #
+        # Try again with a discover packet
+        # Rx'd packet should be to the server address and from the configured
+        # source address
+        # UDP source ports are unchanged
+        # we've no option 82 config so that should be absent
+        #
+        self.pg3.add_stream(pkts_disc_vrf0)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(1)
+        rx = rx[0]
+
+        option_82 = self.verify_relayed_dhcp_discover(rx, self.pg0,
+                                                      src_intf=self.pg3)
+
+        #
+        # Create an DHCP offer reply from the server with a correctly formatted
+        # option 82. i.e. send back what we just captured
+        # The offer, sent mcast to the client, still has option 82.
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+             UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+             BOOTP(op=1) /
+             DHCP(options=[('message-type', 'offer'),
+                           ('relay_agent_Information', option_82),
+                           ('end')]))
+        pkts = [p]
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+        rx = rx[0]
+
+        self.verify_dhcp_offer(rx, self.pg3)
+
+        #
+        # Bogus Option 82:
+        #
+        # 1. not our IP address = not checked by VPP? so offer is replayed
+        #    to client
+        bad_ip = option_82[0:8] + scapy.compat.chb(33) + option_82[9:]
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+             UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+             BOOTP(op=1) /
+             DHCP(options=[('message-type', 'offer'),
+                           ('relay_agent_Information', bad_ip),
+                           ('end')]))
+        pkts = [p]
+        self.send_and_assert_no_replies(self.pg0, pkts,
+                                        "DHCP offer option 82 bad address")
+
+        # 2. Not a sw_if_index VPP knows
+        bad_if_index = option_82[0:2] + scapy.compat.chb(33) + option_82[3:]
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+             UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+             BOOTP(op=1) /
+             DHCP(options=[('message-type', 'offer'),
+                           ('relay_agent_Information', bad_if_index),
+                           ('end')]))
+        pkts = [p]
+        self.send_and_assert_no_replies(self.pg0, pkts,
+                                        "DHCP offer option 82 bad if index")
+
+        #
+        # Send a DHCP request in VRF 1. should be dropped.
+        #
+        self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
+                                        "DHCP with no configuration VRF 1")
+
+        #
+        # Delete the DHCP config in VRF 0
+        # Should now drop requests.
+        #
+        Proxy.remove_vpp_config()
+
+        self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
+                                        "DHCP config removed VRF 0")
+        self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
+                                        "DHCP config removed VRF 1")
+
+        #
+        # Add DHCP config for VRF 1 & 2
+        #
+        server_addr1 = self.pg1.remote_ip4
+        src_addr1 = self.pg1.local_ip4
+        Proxy1 = VppDHCPProxy(
+            self,
+            server_addr1,
+            src_addr1,
+            rx_vrf_id=1,
+            server_vrf_id=1)
+        Proxy1.add_vpp_config()
+
+        server_addr2 = self.pg2.remote_ip4
+        src_addr2 = self.pg2.local_ip4
+        Proxy2 = VppDHCPProxy(
+            self,
+            server_addr2,
+            src_addr2,
+            rx_vrf_id=2,
+            server_vrf_id=2)
+        Proxy2.add_vpp_config()
+
+        #
+        # Confim DHCP requests ok in VRF 1 & 2.
+        #  - dropped on IP config on client interface
+        #
+        self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
+                                        "DHCP config removed VRF 1")
+        self.send_and_assert_no_replies(self.pg5, pkts_disc_vrf2,
+                                        "DHCP config removed VRF 2")
+
+        #
+        # configure an IP address on the client facing interface
+        #
+        self.pg4.config_ip4()
+        self.pg4.add_stream(pkts_disc_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        rx = self.pg1.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg1, src_intf=self.pg4)
+
+        self.pg5.config_ip4()
+        self.pg5.add_stream(pkts_disc_vrf2)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        rx = self.pg2.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg2, src_intf=self.pg5)
+
+        #
+        # Add VSS config
+        #  table=1, vss_type=1, vpn_index=1, oui=4
+        #  table=2, vss_type=0, vpn_id = "ip4-table-2"
+        self.vapi.dhcp_proxy_set_vss(tbl_id=1, vss_type=1,
+                                     vpn_index=1, oui=4, is_add=1)
+        self.vapi.dhcp_proxy_set_vss(tbl_id=2, vss_type=0,
+                                     vpn_ascii_id="ip4-table-2", is_add=1)
+
+        self.pg4.add_stream(pkts_disc_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg1,
+                                          src_intf=self.pg4,
+                                          fib_id=1, oui=4)
+
+        self.pg5.add_stream(pkts_disc_vrf2)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg2.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg2,
+                                          src_intf=self.pg5,
+                                          vpn_id="ip4-table-2")
+
+        #
+        # Add a second DHCP server in VRF 1
+        #  expect clients messages to be relay to both configured servers
+        #
+        self.pg1.generate_remote_hosts(2)
+        server_addr12 = self.pg1.remote_hosts[1].ip4
+
+        Proxy12 = VppDHCPProxy(
+            self,
+            server_addr12,
+            src_addr,
+            rx_vrf_id=1,
+            server_vrf_id=1)
+        Proxy12.add_vpp_config()
+
+        #
+        # We'll need an ARP entry for the server to send it packets
+        #
+        arp_entry = VppNeighbor(self,
+                                self.pg1.sw_if_index,
+                                self.pg1.remote_hosts[1].mac,
+                                self.pg1.remote_hosts[1].ip4)
+        arp_entry.add_vpp_config()
+
+        #
+        # Send a discover from the client. expect two relayed messages
+        # The frist packet is sent to the second server
+        # We're not enforcing that here, it's just the way it is.
+        #
+        self.pg4.add_stream(pkts_disc_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(2)
+
+        option_82 = self.verify_relayed_dhcp_discover(
+            rx[0], self.pg1,
+            src_intf=self.pg4,
+            dst_mac=self.pg1.remote_hosts[1].mac,
+            dst_ip=self.pg1.remote_hosts[1].ip4,
+            fib_id=1, oui=4)
+        self.verify_relayed_dhcp_discover(rx[1], self.pg1,
+                                          src_intf=self.pg4,
+                                          fib_id=1, oui=4)
+
+        #
+        # Send both packets back. Client gets both.
+        #
+        p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) /
+              UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+              BOOTP(op=1) /
+              DHCP(options=[('message-type', 'offer'),
+                            ('relay_agent_Information', option_82),
+                            ('end')]))
+        p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IP(src=self.pg1.remote_hosts[1].ip4, dst=self.pg1.local_ip4) /
+              UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+              BOOTP(op=1) /
+              DHCP(options=[('message-type', 'offer'),
+                            ('relay_agent_Information', option_82),
+                            ('end')]))
+        pkts = [p1, p2]
+
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg4.get_capture(2)
+
+        self.verify_dhcp_offer(rx[0], self.pg4, fib_id=1, oui=4)
+        self.verify_dhcp_offer(rx[1], self.pg4, fib_id=1, oui=4)
+
+        #
+        # Ensure offers from non-servers are dropeed
+        #
+        p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IP(src="8.8.8.8", dst=self.pg1.local_ip4) /
+              UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+              BOOTP(op=1) /
+              DHCP(options=[('message-type', 'offer'),
+                            ('relay_agent_Information', option_82),
+                            ('end')]))
+        self.send_and_assert_no_replies(self.pg1, p2,
+                                        "DHCP offer from non-server")
+
+        #
+        # Ensure only the discover is sent to multiple servers
+        #
+        p_req_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                            src=self.pg4.remote_mac) /
+                      IP(src="0.0.0.0", dst="255.255.255.255") /
+                      UDP(sport=DHCP4_CLIENT_PORT,
+                          dport=DHCP4_SERVER_PORT) /
+                      BOOTP(op=1) /
+                      DHCP(options=[('message-type', 'request'),
+                                    ('end')]))
+
+        self.pg4.add_stream(p_req_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        #
+        # Remove the second DHCP server
+        #
+        Proxy12.remove_vpp_config()
+
+        #
+        # Test we can still relay with the first
+        #
+        self.pg4.add_stream(pkts_disc_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg1,
+                                          src_intf=self.pg4,
+                                          fib_id=1, oui=4)
+
+        #
+        # Remove the VSS config
+        #  relayed DHCP has default vlaues in the option.
+        #
+        self.vapi.dhcp_proxy_set_vss(tbl_id=1, is_add=0)
+        self.vapi.dhcp_proxy_set_vss(tbl_id=2, is_add=0)
+
+        self.pg4.add_stream(pkts_disc_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+        rx = rx[0]
+        self.verify_relayed_dhcp_discover(rx, self.pg1, src_intf=self.pg4)
+
+        #
+        # remove DHCP config to cleanup
+        #
+        Proxy1.remove_vpp_config()
+        Proxy2.remove_vpp_config()
+
+        self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
+                                        "DHCP cleanup VRF 0")
+        self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
+                                        "DHCP cleanup VRF 1")
+        self.send_and_assert_no_replies(self.pg5, pkts_disc_vrf2,
+                                        "DHCP cleanup VRF 2")
+
+        self.pg3.unconfig_ip4()
+        self.pg4.unconfig_ip4()
+        self.pg5.unconfig_ip4()
+
+    def test_dhcp6_proxy(self):
+        """ DHCPv6 Proxy"""
+        #
+        # Verify no response to DHCP request without DHCP config
+        #
+        dhcp_solicit_dst = "ff02::1:2"
+        dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg3.remote_mac)
+        dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg4.remote_mac)
+        dhcp_solicit_src_vrf2 = mk_ll_addr(self.pg5.remote_mac)
+        server_addr_vrf0 = self.pg0.remote_ip6
+        src_addr_vrf0 = self.pg0.local_ip6
+        server_addr_vrf1 = self.pg1.remote_ip6
+        src_addr_vrf1 = self.pg1.local_ip6
+        server_addr_vrf2 = self.pg2.remote_ip6
+        src_addr_vrf2 = self.pg2.local_ip6
+
+        dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
+        p_solicit_vrf0 = (Ether(dst=dmac, src=self.pg3.remote_mac) /
+                          IPv6(src=dhcp_solicit_src_vrf0,
+                               dst=dhcp_solicit_dst) /
+                          UDP(sport=DHCP6_SERVER_PORT,
+                              dport=DHCP6_CLIENT_PORT) /
+                          DHCP6_Solicit())
+        p_solicit_vrf1 = (Ether(dst=dmac, src=self.pg4.remote_mac) /
+                          IPv6(src=dhcp_solicit_src_vrf1,
+                               dst=dhcp_solicit_dst) /
+                          UDP(sport=DHCP6_SERVER_PORT,
+                              dport=DHCP6_CLIENT_PORT) /
+                          DHCP6_Solicit())
+        p_solicit_vrf2 = (Ether(dst=dmac, src=self.pg5.remote_mac) /
+                          IPv6(src=dhcp_solicit_src_vrf2,
+                               dst=dhcp_solicit_dst) /
+                          UDP(sport=DHCP6_SERVER_PORT,
+                              dport=DHCP6_CLIENT_PORT) /
+                          DHCP6_Solicit())
+
+        self.send_and_assert_no_replies(self.pg3, p_solicit_vrf0,
+                                        "DHCP with no configuration")
+        self.send_and_assert_no_replies(self.pg4, p_solicit_vrf1,
+                                        "DHCP with no configuration")
+        self.send_and_assert_no_replies(self.pg5, p_solicit_vrf2,
+                                        "DHCP with no configuration")
+
+        #
+        # DHCPv6 config in VRF 0.
+        # Packets still dropped because the client facing interface has no
+        # IPv6 config
+        #
+        Proxy = VppDHCPProxy(
+            self,
+            server_addr_vrf0,
+            src_addr_vrf0,
+            rx_vrf_id=0,
+            server_vrf_id=0)
+        Proxy.add_vpp_config()
+
+        self.send_and_assert_no_replies(self.pg3, p_solicit_vrf0,
+                                        "DHCP with no configuration")
+        self.send_and_assert_no_replies(self.pg4, p_solicit_vrf1,
+                                        "DHCP with no configuration")
+
+        #
+        # configure an IP address on the client facing interface
+        #
+        self.pg3.config_ip6()
+
+        #
+        # Now the DHCP requests are relayed to the server
+        #
+        self.pg3.add_stream(p_solicit_vrf0)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg0,
+                                  dhcp_solicit_src_vrf0,
+                                  self.pg3.remote_mac)
+
+        #
+        # Exception cases for rejected relay responses
+        #
+
+        # 1 - not a relay reply
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_Advertise())
+        self.send_and_assert_no_replies(self.pg3, p_adv_vrf0,
+                                        "DHCP6 not a relay reply")
+
+        # 2 - no relay message option
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply() /
+                      DHCP6_Advertise())
+        self.send_and_assert_no_replies(self.pg3, p_adv_vrf0,
+                                        "DHCP not a relay message")
+
+        # 3 - no circuit ID
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply() /
+                      DHCP6OptRelayMsg(optlen=0) /
+                      DHCP6_Advertise())
+        self.send_and_assert_no_replies(self.pg3, p_adv_vrf0,
+                                        "DHCP6 no circuit ID")
+        # 4 - wrong circuit ID
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply() /
+                      DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
+                      DHCP6OptRelayMsg(optlen=0) /
+                      DHCP6_Advertise())
+        self.send_and_assert_no_replies(self.pg3, p_adv_vrf0,
+                                        "DHCP6 wrong circuit ID")
+
+        #
+        # Send the relay response (the advertisement)
+        #   - no peer address
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply() /
+                      DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
+                      DHCP6OptRelayMsg(optlen=0) /
+                      DHCP6_Advertise(trid=1) /
+                      DHCP6OptStatusCode(statuscode=0))
+        pkts_adv_vrf0 = [p_adv_vrf0]
+
+        self.pg0.add_stream(pkts_adv_vrf0)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_dhcp6_advert(rx[0], self.pg3, "::")
+
+        #
+        # Send the relay response (the advertisement)
+        #   - with peer address
+        p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                      IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf0) /
+                      DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
+                      DHCP6OptRelayMsg(optlen=0) /
+                      DHCP6_Advertise(trid=1) /
+                      DHCP6OptStatusCode(statuscode=0))
+        pkts_adv_vrf0 = [p_adv_vrf0]
+
+        self.pg0.add_stream(pkts_adv_vrf0)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf0)
+
+        #
+        # Add all the config for VRF 1 & 2
+        #
+        Proxy1 = VppDHCPProxy(
+            self,
+            server_addr_vrf1,
+            src_addr_vrf1,
+            rx_vrf_id=1,
+            server_vrf_id=1)
+        Proxy1.add_vpp_config()
+        self.pg4.config_ip6()
+
+        Proxy2 = VppDHCPProxy(
+            self,
+            server_addr_vrf2,
+            src_addr_vrf2,
+            rx_vrf_id=2,
+            server_vrf_id=2)
+        Proxy2.add_vpp_config()
+        self.pg5.config_ip6()
+
+        #
+        # VRF 1 solicit
+        #
+        self.pg4.add_stream(p_solicit_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac)
+
+        #
+        # VRF 2 solicit
+        #
+        self.pg5.add_stream(p_solicit_vrf2)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg2.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg2,
+                                  dhcp_solicit_src_vrf2,
+                                  self.pg5.remote_mac)
+
+        #
+        # VRF 1 Advert
+        #
+        p_adv_vrf1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                      IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
+                      UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+                      DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+                      DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
+                      DHCP6OptRelayMsg(optlen=0) /
+                      DHCP6_Advertise(trid=1) /
+                      DHCP6OptStatusCode(statuscode=0))
+        pkts_adv_vrf1 = [p_adv_vrf1]
+
+        self.pg1.add_stream(pkts_adv_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg4.get_capture(1)
+
+        self.verify_dhcp6_advert(rx[0], self.pg4, dhcp_solicit_src_vrf1)
+
+        #
+        # Add VSS config
+        #
+        self.vapi.dhcp_proxy_set_vss(
+            tbl_id=1, vss_type=1, oui=4, vpn_index=1, is_ipv6=1, is_add=1)
+        self.vapi.dhcp_proxy_set_vss(
+            tbl_id=2,
+            vss_type=0,
+            vpn_ascii_id="IPv6-table-2",
+            is_ipv6=1,
+            is_add=1)
+
+        self.pg4.add_stream(p_solicit_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac,
+                                  fib_id=1,
+                                  oui=4)
+
+        self.pg5.add_stream(p_solicit_vrf2)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg2.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg2,
+                                  dhcp_solicit_src_vrf2,
+                                  self.pg5.remote_mac,
+                                  vpn_id="IPv6-table-2")
+
+        #
+        # Remove the VSS config
+        #  relayed DHCP has default vlaues in the option.
+        #
+        self.vapi.dhcp_proxy_set_vss(tbl_id=1, is_ipv6=1, is_add=0)
+
+        self.pg4.add_stream(p_solicit_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac)
+
+        #
+        # Add a second DHCP server in VRF 1
+        #  expect clients messages to be relay to both configured servers
+        #
+        self.pg1.generate_remote_hosts(2)
+        server_addr12 = self.pg1.remote_hosts[1].ip6
+
+        Proxy12 = VppDHCPProxy(
+            self,
+            server_addr12,
+            src_addr_vrf1,
+            rx_vrf_id=1,
+            server_vrf_id=1)
+        Proxy12.add_vpp_config()
+
+        #
+        # We'll need an ND entry for the server to send it packets
+        #
+        nd_entry = VppNeighbor(self,
+                               self.pg1.sw_if_index,
+                               self.pg1.remote_hosts[1].mac,
+                               self.pg1.remote_hosts[1].ip6)
+        nd_entry.add_vpp_config()
+
+        #
+        # Send a discover from the client. expect two relayed messages
+        # The frist packet is sent to the second server
+        # We're not enforcing that here, it's just the way it is.
+        #
+        self.pg4.add_stream(p_solicit_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(2)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac)
+        self.verify_dhcp6_solicit(rx[1], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac,
+                                  dst_mac=self.pg1.remote_hosts[1].mac,
+                                  dst_ip=self.pg1.remote_hosts[1].ip6)
+
+        #
+        # Send both packets back. Client gets both.
+        #
+        p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
+              UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+              DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+              DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
+              DHCP6OptRelayMsg(optlen=0) /
+              DHCP6_Advertise(trid=1) /
+              DHCP6OptStatusCode(statuscode=0))
+        p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
+              IPv6(dst=self.pg1.local_ip6, src=self.pg1._remote_hosts[1].ip6) /
+              UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+              DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+              DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
+              DHCP6OptRelayMsg(optlen=0) /
+              DHCP6_Advertise(trid=1) /
+              DHCP6OptStatusCode(statuscode=0))
+
+        pkts = [p1, p2]
+
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg4.get_capture(2)
+
+        self.verify_dhcp6_advert(rx[0], self.pg4, dhcp_solicit_src_vrf1)
+        self.verify_dhcp6_advert(rx[1], self.pg4, dhcp_solicit_src_vrf1)
+
+        #
+        # Ensure only solicit messages are duplicated
+        #
+        p_request_vrf1 = (Ether(dst=dmac, src=self.pg4.remote_mac) /
+                          IPv6(src=dhcp_solicit_src_vrf1,
+                               dst=dhcp_solicit_dst) /
+                          UDP(sport=DHCP6_SERVER_PORT,
+                              dport=DHCP6_CLIENT_PORT) /
+                          DHCP6_Request())
+
+        self.pg4.add_stream(p_request_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        #
+        # Test we drop DHCP packets from addresses that are not configured as
+        # DHCP servers
+        #
+        p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
+              IPv6(dst=self.pg1.local_ip6, src="3001::1") /
+              UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+              DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+              DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
+              DHCP6OptRelayMsg(optlen=0) /
+              DHCP6_Advertise(trid=1) /
+              DHCP6OptStatusCode(statuscode=0))
+        self.send_and_assert_no_replies(self.pg1, p2,
+                                        "DHCP6 not from server")
+
+        #
+        # Remove the second DHCP server
+        #
+        Proxy12.remove_vpp_config()
+
+        #
+        # Test we can still relay with the first
+        #
+        self.pg4.add_stream(p_solicit_vrf1)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+
+        self.verify_dhcp6_solicit(rx[0], self.pg1,
+                                  dhcp_solicit_src_vrf1,
+                                  self.pg4.remote_mac)
+
+        #
+        # Cleanup
+        #
+        Proxy.remove_vpp_config()
+        Proxy1.remove_vpp_config()
+        Proxy2.remove_vpp_config()
+
+        self.pg3.unconfig_ip6()
+        self.pg4.unconfig_ip6()
+        self.pg5.unconfig_ip6()
+
+    def test_dhcp_client(self):
+        """ DHCP Client"""
+
+        vdscp = VppEnum.vl_api_ip_dscp_t
+        hostname = 'universal-dp'
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        #
+        # Configure DHCP client on PG3 and capture the discover sent
+        #
+        Client = VppDHCPClient(self, self.pg3.sw_if_index, hostname)
+        Client.add_vpp_config()
+        self.assertTrue(Client.query_vpp_config())
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname)
+
+        #
+        # Send back on offer, expect the request
+        #
+        p_offer = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                   IP(src=self.pg3.remote_ip4, dst="255.255.255.255") /
+                   UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                   BOOTP(op=1,
+                         yiaddr=self.pg3.local_ip4,
+                         chaddr=mac_pton(self.pg3.local_mac)) /
+                   DHCP(options=[('message-type', 'offer'),
+                                 ('server_id', self.pg3.remote_ip4),
+                                 'end']))
+
+        self.pg3.add_stream(p_offer)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+        self.verify_orig_dhcp_request(rx[0], self.pg3, hostname,
+                                      self.pg3.local_ip4)
+
+        #
+        # Send an acknowledgment
+        #
+        p_ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 IP(src=self.pg3.remote_ip4, dst="255.255.255.255") /
+                 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                 BOOTP(op=1, yiaddr=self.pg3.local_ip4,
+                       chaddr=mac_pton(self.pg3.local_mac)) /
+                 DHCP(options=[('message-type', 'ack'),
+                               ('subnet_mask', "255.255.255.0"),
+                               ('router', self.pg3.remote_ip4),
+                               ('server_id', self.pg3.remote_ip4),
+                               ('lease_time', 43200),
+                               'end']))
+
+        self.pg3.add_stream(p_ack)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # We'll get an ARP request for the router address
+        #
+        rx = self.pg3.get_capture(1)
+
+        self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+        self.pg_enable_capture(self.pg_interfaces)
+
+        #
+        # At the end of this procedure there should be a connected route
+        # in the FIB
+        #
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+
+        #
+        # remove the DHCP config
+        #
+        Client.remove_vpp_config()
+
+        #
+        # and now the route should be gone
+        #
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+        #
+        # Start the procedure again. this time have VPP send the client-ID
+        # and set the DSCP value
+        #
+        self.pg3.admin_down()
+        self.sleep(1)
+        self.pg3.admin_up()
+        Client.set_client(self.pg3.sw_if_index, hostname,
+                          id=self.pg3.local_mac,
+                          dscp=vdscp.IP_API_DSCP_EF)
+        Client.add_vpp_config()
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname,
+                                       self.pg3.local_mac,
+                                       dscp=vdscp.IP_API_DSCP_EF)
+
+        # TODO: VPP DHCP client should not accept DHCP OFFER message with
+        # the XID (Transaction ID) not matching the XID of the most recent
+        # DHCP DISCOVERY message.
+        # Such DHCP OFFER message must be silently discarded - RFC2131.
+        # Reported in Jira ticket: VPP-99
+        self.pg3.add_stream(p_offer)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+        self.verify_orig_dhcp_request(rx[0], self.pg3, hostname,
+                                      self.pg3.local_ip4,
+                                      dscp=vdscp.IP_API_DSCP_EF)
+
+        #
+        # unicast the ack to the offered address
+        #
+        p_ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+                 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                 BOOTP(op=1, yiaddr=self.pg3.local_ip4,
+                       chaddr=mac_pton(self.pg3.local_mac)) /
+                 DHCP(options=[('message-type', 'ack'),
+                               ('subnet_mask', "255.255.255.0"),
+                               ('router', self.pg3.remote_ip4),
+                               ('server_id', self.pg3.remote_ip4),
+                               ('lease_time', 43200),
+                               'end']))
+
+        self.pg3.add_stream(p_ack)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # We'll get an ARP request for the router address
+        #
+        rx = self.pg3.get_capture(1)
+
+        self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+        self.pg_enable_capture(self.pg_interfaces)
+
+        #
+        # At the end of this procedure there should be a connected route
+        # in the FIB
+        #
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+
+        #
+        # remove the DHCP config
+        #
+        Client.remove_vpp_config()
+
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+        #
+        # Rince and repeat, this time with VPP configured not to set
+        # the braodcast flag in the discover and request messages,
+        # and for the server to unicast the responses.
+        #
+        # Configure DHCP client on PG3 and capture the discover sent
+        #
+        Client.set_client(
+            self.pg3.sw_if_index,
+            hostname,
+            set_broadcast_flag=False)
+        Client.add_vpp_config()
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname,
+                                       broadcast=False)
+
+        #
+        # Send back on offer, unicasted to the offered address.
+        # Expect the request.
+        #
+        p_offer = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                   IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+                   UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                   BOOTP(op=1, yiaddr=self.pg3.local_ip4,
+                         chaddr=mac_pton(self.pg3.local_mac)) /
+                   DHCP(options=[('message-type', 'offer'),
+                                 ('server_id', self.pg3.remote_ip4),
+                                 'end']))
+
+        self.pg3.add_stream(p_offer)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+        self.verify_orig_dhcp_request(rx[0], self.pg3, hostname,
+                                      self.pg3.local_ip4,
+                                      broadcast=False)
+
+        #
+        # Send an acknowledgment, the lease renewal time is 2 seconds
+        # so we should expect the renew straight after
+        #
+        p_ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+                 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                 BOOTP(op=1, yiaddr=self.pg3.local_ip4,
+                       chaddr=mac_pton(self.pg3.local_mac)) /
+                 DHCP(options=[('message-type', 'ack'),
+                               ('subnet_mask', "255.255.255.0"),
+                               ('router', self.pg3.remote_ip4),
+                               ('server_id', self.pg3.remote_ip4),
+                               ('lease_time', 43200),
+                               ('renewal_time', 2),
+                               'end']))
+
+        self.pg3.add_stream(p_ack)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # We'll get an ARP request for the router address
+        #
+        rx = self.pg3.get_capture(1)
+
+        self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+        self.pg_enable_capture(self.pg_interfaces)
+
+        #
+        # At the end of this procedure there should be a connected route
+        # in the FIB
+        #
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+
+        #
+        # read the DHCP client details from a dump
+        #
+        clients = self.vapi.dhcp_client_dump()
+
+        self.assertEqual(clients[0].client.sw_if_index,
+                         self.pg3.sw_if_index)
+        self.assertEqual(clients[0].lease.sw_if_index,
+                         self.pg3.sw_if_index)
+        self.assertEqual(clients[0].client.hostname, hostname)
+        self.assertEqual(clients[0].lease.hostname, hostname)
+        # 0 = DISCOVER, 1 = REQUEST, 2 = BOUND
+        self.assertEqual(clients[0].lease.state, 2)
+        self.assertEqual(clients[0].lease.mask_width, 24)
+        self.assertEqual(str(clients[0].lease.router_address),
+                         self.pg3.remote_ip4)
+        self.assertEqual(str(clients[0].lease.host_address),
+                         self.pg3.local_ip4)
+
+        #
+        # wait for the unicasted renewal
+        #  the first attempt will be an ARP packet, since we have not yet
+        #  responded to VPP's request
+        #
+        self.logger.info(self.vapi.cli("sh dhcp client intfc pg3 verbose"))
+        rx = self.pg3.get_capture(1, timeout=10)
+
+        self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+
+        # respond to the arp
+        p_arp = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 ARP(op="is-at",
+                     hwdst=self.pg3.local_mac,
+                     hwsrc=self.pg3.remote_mac,
+                     pdst=self.pg3.local_ip4,
+                     psrc=self.pg3.remote_ip4))
+        self.pg3.add_stream(p_arp)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # the next packet is the unicasted renewal
+        rx = self.pg3.get_capture(1, timeout=10)
+        self.verify_orig_dhcp_request(rx[0], self.pg3, hostname,
+                                      self.pg3.local_ip4,
+                                      l2_bc=False,
+                                      broadcast=False)
+
+        # send an ACK with different data from the original offer *
+        self.pg3.generate_remote_hosts(4)
+        p_ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+                 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                 BOOTP(op=1, yiaddr=self.pg3.remote_hosts[3].ip4,
+                       chaddr=mac_pton(self.pg3.local_mac)) /
+                 DHCP(options=[('message-type', 'ack'),
+                               ('subnet_mask', "255.255.255.0"),
+                               ('router', self.pg3.remote_hosts[1].ip4),
+                               ('server_id', self.pg3.remote_hosts[2].ip4),
+                               ('lease_time', 43200),
+                               ('renewal_time', 2),
+                               'end']))
+
+        self.pg3.add_stream(p_ack)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # read the DHCP client details from a dump
+        #
+        clients = self.vapi.dhcp_client_dump()
+
+        self.assertEqual(clients[0].client.sw_if_index,
+                         self.pg3.sw_if_index)
+        self.assertEqual(clients[0].lease.sw_if_index,
+                         self.pg3.sw_if_index)
+        self.assertEqual(clients[0].client.hostname, hostname)
+        self.assertEqual(clients[0].lease.hostname, hostname)
+        # 0 = DISCOVER, 1 = REQUEST, 2 = BOUND
+        self.assertEqual(clients[0].lease.state, 2)
+        self.assertEqual(clients[0].lease.mask_width, 24)
+        self.assertEqual(str(clients[0].lease.router_address),
+                         self.pg3.remote_hosts[1].ip4)
+        self.assertEqual(str(clients[0].lease.host_address),
+                         self.pg3.remote_hosts[3].ip4)
+
+        #
+        # remove the DHCP config
+        #
+        Client.remove_vpp_config()
+
+        #
+        # and now the route should be gone
+        #
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+        self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+        #
+        # Start the procedure again. Use requested lease time option.
+        # this time wait for the lease to expire and the client to
+        # self-destruct
+        #
+        hostname += "-2"
+        self.pg3.admin_down()
+        self.sleep(1)
+        self.pg3.admin_up()
+        self.pg_enable_capture(self.pg_interfaces)
+        Client.set_client(self.pg3.sw_if_index, hostname)
+        Client.add_vpp_config()
+
+        rx = self.pg3.get_capture(1)
+
+        self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname)
+
+        #
+        # Send back on offer with requested lease time, expect the request
+        #
+        lease_time = 1
+        p_offer = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                   IP(src=self.pg3.remote_ip4, dst='255.255.255.255') /
+                   UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                   BOOTP(op=1,
+                         yiaddr=self.pg3.local_ip4,
+                         chaddr=mac_pton(self.pg3.local_mac)) /
+                   DHCP(options=[('message-type', 'offer'),
+                                 ('server_id', self.pg3.remote_ip4),
+                                 ('lease_time', lease_time),
+                                 'end']))
+
+        self.pg3.add_stream(p_offer)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg3.get_capture(1)
+        self.verify_orig_dhcp_request(rx[0], self.pg3, hostname,
+                                      self.pg3.local_ip4)
+
+        #
+        # Send an acknowledgment
+        #
+        p_ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+                 IP(src=self.pg3.remote_ip4, dst='255.255.255.255') /
+                 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT) /
+                 BOOTP(op=1, yiaddr=self.pg3.local_ip4,
+                       chaddr=mac_pton(self.pg3.local_mac)) /
+                 DHCP(options=[('message-type', 'ack'),
+                               ('subnet_mask', '255.255.255.0'),
+                               ('router', self.pg3.remote_ip4),
+                               ('server_id', self.pg3.remote_ip4),
+                               ('lease_time', lease_time),
+                               'end']))
+
+        self.pg3.add_stream(p_ack)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # We'll get an ARP request for the router address
+        #
+        rx = self.pg3.get_capture(1)
+
+        self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+
+        #
+        # At the end of this procedure there should be a connected route
+        # in the FIB
+        #
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+        self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+
+        #
+        # the route should be gone after the lease expires
+        #
+        self.assertTrue(self.wait_for_no_route(self.pg3.local_ip4, 32))
+        self.assertTrue(self.wait_for_no_route(self.pg3.local_ip4, 24))
+
+        #
+        # remove the DHCP config
+        #
+        Client.remove_vpp_config()
+
+    def test_dhcp_client_vlan(self):
+        """ DHCP Client w/ VLAN"""
+
+        vdscp = VppEnum.vl_api_ip_dscp_t
+        vqos = VppEnum.vl_api_qos_source_t
+        hostname = 'universal-dp'
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        vlan_100 = VppDot1QSubint(self, self.pg3, 100)
+        vlan_100.admin_up()
+
+        output = [scapy.compat.chb(4)] * 256
+        os = b''.join(output)
+        rows = [{'outputs': os},
+                {'outputs': os},
+                {'outputs': os},
+                {'outputs': os}]
+
+        qem1 = VppQosEgressMap(self, 1, rows).add_vpp_config()
+        qm1 = VppQosMark(self, vlan_100, qem1,
+                         vqos.QOS_API_SOURCE_VLAN).add_vpp_config()
+
+        #
+        # Configure DHCP client on PG3 and capture the discover sent
+        #
+        Client = VppDHCPClient(
+            self,
+            vlan_100.sw_if_index,
+            hostname,
+            dscp=vdscp.IP_API_DSCP_EF)
+        Client.add_vpp_config()
+
+        rx = self.pg3.get_capture(1)
+
+        self.assertEqual(rx[0][Dot1Q].vlan, 100)
+        self.assertEqual(rx[0][Dot1Q].prio, 2)
+
+        self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname,
+                                       dscp=vdscp.IP_API_DSCP_EF)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_dhcp6.py b/test/test_dhcp6.py
new file mode 100644
index 0000000..57eb113
--- /dev/null
+++ b/test/test_dhcp6.py
@@ -0,0 +1,805 @@
+from socket import AF_INET6, inet_ntop, inet_pton
+
+from scapy.layers.dhcp6 import DHCP6_Advertise, DHCP6OptClientId, \
+    DHCP6OptStatusCode, DHCP6OptPref, DHCP6OptIA_PD, DHCP6OptIAPrefix, \
+    DHCP6OptServerId, DHCP6_Solicit, DHCP6_Reply, DHCP6_Request, DHCP6_Renew, \
+    DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime, DHCP6OptIA_NA, \
+    DHCP6OptIAAddress
+from scapy.layers.inet6 import IPv6, Ether, UDP
+from scapy.utils6 import in6_mactoifaceid
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase
+from framework import tag_run_solo
+from vpp_papi import VppEnum
+import util
+import os
+
+
+def ip6_normalize(ip6):
+    return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
+
+
+class TestDHCPv6DataPlane(VppTestCase):
+    """ DHCPv6 Data Plane Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDHCPv6DataPlane, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDHCPv6DataPlane, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDHCPv6DataPlane, self).setUp()
+
+        self.create_pg_interfaces(range(1))
+        self.interfaces = list(self.pg_interfaces)
+        for i in self.interfaces:
+            i.admin_up()
+            i.config_ip6()
+
+        self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
+
+    def tearDown(self):
+        for i in self.interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestDHCPv6DataPlane, self).tearDown()
+
+    def test_dhcp_ia_na_send_solicit_receive_advertise(self):
+        """ Verify DHCPv6 IA NA Solicit packet and Advertise event """
+
+        self.vapi.dhcp6_clients_enable_disable(enable=1)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        address = {'address': '1:2:3::5',
+                   'preferred_time': 60,
+                   'valid_time': 120}
+        self.vapi.dhcp6_send_client_message(
+            server_index=0xffffffff,
+            mrc=1,
+            msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT,
+            sw_if_index=self.pg0.sw_if_index,
+            T1=20,
+            T2=40,
+            addresses=[address],
+            n_addresses=len(
+                [address]))
+        rx_list = self.pg0.get_capture(1)
+        self.assertEqual(len(rx_list), 1)
+        packet = rx_list[0]
+
+        self.assertEqual(packet.haslayer(IPv6), 1)
+        self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
+
+        client_duid = packet[DHCP6OptClientId].duid
+        trid = packet[DHCP6_Solicit].trid
+
+        dst = ip6_normalize(packet[IPv6].dst)
+        dst2 = ip6_normalize("ff02::1:2")
+        self.assert_equal(dst, dst2)
+        src = ip6_normalize(packet[IPv6].src)
+        src2 = ip6_normalize(self.pg0.local_ip6_ll)
+        self.assert_equal(src, src2)
+        ia_na = packet[DHCP6OptIA_NA]
+        self.assert_equal(ia_na.T1, 20)
+        self.assert_equal(ia_na.T2, 40)
+        self.assert_equal(len(ia_na.ianaopts), 1)
+        address = ia_na.ianaopts[0]
+        self.assert_equal(address.addr, '1:2:3::5')
+        self.assert_equal(address.preflft, 60)
+        self.assert_equal(address.validlft, 120)
+
+        self.vapi.want_dhcp6_reply_events(enable_disable=1,
+                                          pid=os.getpid())
+
+        try:
+            ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=60,
+                                           validlft=120)
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
+                      dst=self.pg0.local_ip6_ll) /
+                 UDP(sport=547, dport=546) /
+                 DHCP6_Advertise(trid=trid) /
+                 DHCP6OptServerId(duid=self.server_duid) /
+                 DHCP6OptClientId(duid=client_duid) /
+                 DHCP6OptPref(prefval=7) /
+                 DHCP6OptStatusCode(statuscode=1) /
+                 DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
+                 )
+            self.pg0.add_stream([p])
+            self.pg_start()
+
+            ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
+
+            self.assert_equal(ev.preference, 7)
+            self.assert_equal(ev.status_code, 1)
+            self.assert_equal(ev.T1, 20)
+            self.assert_equal(ev.T2, 40)
+
+            reported_address = ev.addresses[0]
+            address = ia_na_opts.getfieldval("addr")
+            self.assert_equal(str(reported_address.address), address)
+            self.assert_equal(reported_address.preferred_time,
+                              ia_na_opts.getfieldval("preflft"))
+            self.assert_equal(reported_address.valid_time,
+                              ia_na_opts.getfieldval("validlft"))
+
+        finally:
+            self.vapi.want_dhcp6_reply_events(enable_disable=0)
+        self.vapi.dhcp6_clients_enable_disable(enable=0)
+
+    def test_dhcp_pd_send_solicit_receive_advertise(self):
+        """ Verify DHCPv6 PD Solicit packet and Advertise event """
+
+        self.vapi.dhcp6_clients_enable_disable(enable=1)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        prefix = {'prefix': {'address': '1:2:3::', 'len': 50},
+                  'preferred_time': 60,
+                  'valid_time': 120}
+        prefixes = [prefix]
+        self.vapi.dhcp6_pd_send_client_message(
+            server_index=0xffffffff,
+            mrc=1,
+            msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT,
+            sw_if_index=self.pg0.sw_if_index,
+            T1=20,
+            T2=40,
+            prefixes=prefixes,
+            n_prefixes=len(prefixes))
+        rx_list = self.pg0.get_capture(1)
+        self.assertEqual(len(rx_list), 1)
+        packet = rx_list[0]
+
+        self.assertEqual(packet.haslayer(IPv6), 1)
+        self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
+
+        client_duid = packet[DHCP6OptClientId].duid
+        trid = packet[DHCP6_Solicit].trid
+
+        dst = ip6_normalize(packet[IPv6].dst)
+        dst2 = ip6_normalize("ff02::1:2")
+        self.assert_equal(dst, dst2)
+        src = ip6_normalize(packet[IPv6].src)
+        src2 = ip6_normalize(self.pg0.local_ip6_ll)
+        self.assert_equal(src, src2)
+        ia_pd = packet[DHCP6OptIA_PD]
+        self.assert_equal(ia_pd.T1, 20)
+        self.assert_equal(ia_pd.T2, 40)
+        self.assert_equal(len(ia_pd.iapdopt), 1)
+        prefix = ia_pd.iapdopt[0]
+        self.assert_equal(prefix.prefix, '1:2:3::')
+        self.assert_equal(prefix.plen, 50)
+        self.assert_equal(prefix.preflft, 60)
+        self.assert_equal(prefix.validlft, 120)
+
+        self.vapi.want_dhcp6_pd_reply_events(enable_disable=1,
+                                             pid=os.getpid())
+
+        try:
+            ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
+                                          validlft=120)
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
+                      dst=self.pg0.local_ip6_ll) /
+                 UDP(sport=547, dport=546) /
+                 DHCP6_Advertise(trid=trid) /
+                 DHCP6OptServerId(duid=self.server_duid) /
+                 DHCP6OptClientId(duid=client_duid) /
+                 DHCP6OptPref(prefval=7) /
+                 DHCP6OptStatusCode(statuscode=1) /
+                 DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
+                 )
+            self.pg0.add_stream([p])
+            self.pg_start()
+
+            ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
+
+            self.assert_equal(ev.preference, 7)
+            self.assert_equal(ev.status_code, 1)
+            self.assert_equal(ev.T1, 20)
+            self.assert_equal(ev.T2, 40)
+
+            reported_prefix = ev.prefixes[0]
+            prefix = ia_pd_opts.getfieldval("prefix")
+            self.assert_equal(
+                str(reported_prefix.prefix).split('/')[0], prefix)
+            self.assert_equal(int(str(reported_prefix.prefix).split('/')[1]),
+                              ia_pd_opts.getfieldval("plen"))
+            self.assert_equal(reported_prefix.preferred_time,
+                              ia_pd_opts.getfieldval("preflft"))
+            self.assert_equal(reported_prefix.valid_time,
+                              ia_pd_opts.getfieldval("validlft"))
+
+        finally:
+            self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
+        self.vapi.dhcp6_clients_enable_disable(enable=0)
+
+
+@tag_run_solo
+class TestDHCPv6IANAControlPlane(VppTestCase):
+    """ DHCPv6 IA NA Control Plane Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDHCPv6IANAControlPlane, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDHCPv6IANAControlPlane, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDHCPv6IANAControlPlane, self).setUp()
+
+        self.create_pg_interfaces(range(1))
+        self.interfaces = list(self.pg_interfaces)
+        for i in self.interfaces:
+            i.admin_up()
+
+        self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
+        self.client_duid = None
+        self.T1 = 1
+        self.T2 = 2
+
+        fib = self.vapi.ip_route_dump(0, True)
+        self.initial_addresses = set(self.get_interface_addresses(fib,
+                                                                  self.pg0))
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.vapi.dhcp6_client_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                              enable=1)
+
+    def tearDown(self):
+        self.vapi.dhcp6_client_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                              enable=0)
+
+        for i in self.interfaces:
+            i.admin_down()
+
+        super(TestDHCPv6IANAControlPlane, self).tearDown()
+
+    @staticmethod
+    def get_interface_addresses(fib, pg):
+        lst = []
+        for entry in fib:
+            if entry.route.prefix.prefixlen == 128:
+                path = entry.route.paths[0]
+                if path.sw_if_index == pg.sw_if_index:
+                    lst.append(str(entry.route.prefix.network_address))
+        return lst
+
+    def get_addresses(self):
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        return addresses.difference(self.initial_addresses)
+
+    def validate_duid_ll(self, duid):
+        DUID_LL(duid)
+
+    def validate_packet(self, packet, msg_type, is_resend=False):
+        try:
+            self.assertEqual(packet.haslayer(msg_type), 1)
+            client_duid = packet[DHCP6OptClientId].duid
+            if self.client_duid is None:
+                self.client_duid = client_duid
+                self.validate_duid_ll(client_duid)
+            else:
+                self.assertEqual(self.client_duid, client_duid)
+            if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
+                server_duid = packet[DHCP6OptServerId].duid
+                self.assertEqual(server_duid, self.server_duid)
+            if is_resend:
+                self.assertEqual(self.trid, packet[msg_type].trid)
+            else:
+                self.trid = packet[msg_type].trid
+            ip = packet[IPv6]
+            udp = packet[UDP]
+            self.assertEqual(ip.dst, 'ff02::1:2')
+            self.assertEqual(udp.sport, 546)
+            self.assertEqual(udp.dport, 547)
+            dhcpv6 = packet[msg_type]
+            elapsed_time = dhcpv6[DHCP6OptElapsedTime]
+            if (is_resend):
+                self.assertNotEqual(elapsed_time.elapsedtime, 0)
+            else:
+                self.assertEqual(elapsed_time.elapsedtime, 0)
+        except BaseException:
+            packet.show()
+            raise
+
+    def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
+        if timeout is None:
+            timeout = 3
+        rx_list = self.pg0.get_capture(1, timeout=timeout)
+        packet = rx_list[0]
+        self.validate_packet(packet, msg_type, is_resend=is_resend)
+
+    def wait_for_solicit(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
+
+    def wait_for_request(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
+
+    def wait_for_renew(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
+
+    def wait_for_rebind(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
+
+    def wait_for_release(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
+
+    def send_packet(self, msg_type, t1=None, t2=None, ianaopts=None):
+        if t1 is None:
+            t1 = self.T1
+        if t2 is None:
+            t2 = self.T2
+        if ianaopts is None:
+            opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2)
+        else:
+            opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2, ianaopts=ianaopts)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
+                  dst=self.pg0.local_ip6_ll) /
+             UDP(sport=547, dport=546) /
+             msg_type(trid=self.trid) /
+             DHCP6OptServerId(duid=self.server_duid) /
+             DHCP6OptClientId(duid=self.client_duid) /
+             opt_ia_na
+             )
+        self.pg0.add_stream([p])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+    def send_advertise(self, t1=None, t2=None, ianaopts=None):
+        self.send_packet(DHCP6_Advertise, t1, t2, ianaopts)
+
+    def send_reply(self, t1=None, t2=None, ianaopts=None):
+        self.send_packet(DHCP6_Reply, t1, t2, ianaopts)
+
+    def test_T1_and_T2_timeouts(self):
+        """ Test T1 and T2 timeouts """
+
+        self.wait_for_solicit()
+        self.send_advertise()
+        self.wait_for_request()
+        self.send_reply()
+
+        self.sleep(1)
+
+        self.wait_for_renew()
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        self.sleep(1)
+
+        self.wait_for_rebind()
+
+    def test_addresses(self):
+        """ Test handling of addresses """
+
+        ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=1,
+                                       validlft=2)
+
+        self.wait_for_solicit()
+        self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
+        self.wait_for_request()
+        self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
+        self.sleep(0.1)
+
+        # check FIB for new address
+        new_addresses = self.get_addresses()
+        self.assertEqual(len(new_addresses), 1)
+        addr = list(new_addresses)[0]
+        self.assertEqual(addr, '7:8::2')
+
+        self.sleep(2)
+
+        # check that the address is deleted
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(self.initial_addresses)
+        self.assertEqual(len(new_addresses), 0)
+
+    def test_sending_client_messages_solicit(self):
+        """ VPP receives messages from DHCPv6 client """
+
+        self.wait_for_solicit()
+        self.send_packet(DHCP6_Solicit)
+        self.send_packet(DHCP6_Request)
+        self.send_packet(DHCP6_Renew)
+        self.send_packet(DHCP6_Rebind)
+        self.sleep(1)
+        self.wait_for_solicit(is_resend=True)
+
+    def test_sending_inappropriate_packets(self):
+        """ Server sends messages with inappropriate message types """
+
+        self.wait_for_solicit()
+        self.send_reply()
+        self.wait_for_solicit(is_resend=True)
+        self.send_advertise()
+        self.wait_for_request()
+        self.send_advertise()
+        self.wait_for_request(is_resend=True)
+        self.send_reply()
+        self.wait_for_renew()
+
+    def test_no_address_available_in_advertise(self):
+        """ Advertise message contains NoAddrsAvail status code """
+
+        self.wait_for_solicit()
+        noavail = DHCP6OptStatusCode(statuscode=2)  # NoAddrsAvail
+        self.send_advertise(ianaopts=noavail)
+        self.wait_for_solicit(is_resend=True)
+
+    def test_preferred_greater_than_valid_lifetime(self):
+        """ Preferred lifetime is greater than valid lifetime """
+
+        self.wait_for_solicit()
+        self.send_advertise()
+        self.wait_for_request()
+        ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=3)
+        self.send_reply(ianaopts=ia_na_opts)
+
+        self.sleep(0.5)
+
+        # check FIB contains no addresses
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(self.initial_addresses)
+        self.assertEqual(len(new_addresses), 0)
+
+    def test_T1_greater_than_T2(self):
+        """ T1 is greater than T2 """
+
+        self.wait_for_solicit()
+        self.send_advertise()
+        self.wait_for_request()
+        ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=8)
+        self.send_reply(t1=80, t2=40, ianaopts=ia_na_opts)
+
+        self.sleep(0.5)
+
+        # check FIB contains no addresses
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(self.initial_addresses)
+        self.assertEqual(len(new_addresses), 0)
+
+
+@tag_fixme_vpp_workers
+class TestDHCPv6PDControlPlane(VppTestCase):
+    """ DHCPv6 PD Control Plane Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDHCPv6PDControlPlane, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDHCPv6PDControlPlane, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDHCPv6PDControlPlane, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+        self.interfaces = list(self.pg_interfaces)
+        for i in self.interfaces:
+            i.admin_up()
+
+        self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
+        self.client_duid = None
+        self.T1 = 1
+        self.T2 = 2
+
+        fib = self.vapi.ip_route_dump(0, True)
+        self.initial_addresses = set(self.get_interface_addresses(fib,
+                                                                  self.pg1))
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.prefix_group = 'my-pd-prefix-group'
+
+        self.vapi.dhcp6_pd_client_enable_disable(
+            enable=1,
+            sw_if_index=self.pg0.sw_if_index,
+            prefix_group=self.prefix_group)
+
+    def tearDown(self):
+        self.vapi.dhcp6_pd_client_enable_disable(self.pg0.sw_if_index,
+                                                 enable=0)
+
+        for i in self.interfaces:
+            i.admin_down()
+
+        super(TestDHCPv6PDControlPlane, self).tearDown()
+
+    @staticmethod
+    def get_interface_addresses(fib, pg):
+        lst = []
+        for entry in fib:
+            if entry.route.prefix.prefixlen == 128:
+                path = entry.route.paths[0]
+                if path.sw_if_index == pg.sw_if_index:
+                    lst.append(str(entry.route.prefix.network_address))
+        return lst
+
+    def get_addresses(self):
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg1))
+        return addresses.difference(self.initial_addresses)
+
+    def validate_duid_ll(self, duid):
+        DUID_LL(duid)
+
+    def validate_packet(self, packet, msg_type, is_resend=False):
+        try:
+            self.assertEqual(packet.haslayer(msg_type), 1)
+            client_duid = packet[DHCP6OptClientId].duid
+            if self.client_duid is None:
+                self.client_duid = client_duid
+                self.validate_duid_ll(client_duid)
+            else:
+                self.assertEqual(self.client_duid, client_duid)
+            if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
+                server_duid = packet[DHCP6OptServerId].duid
+                self.assertEqual(server_duid, self.server_duid)
+            if is_resend:
+                self.assertEqual(self.trid, packet[msg_type].trid)
+            else:
+                self.trid = packet[msg_type].trid
+            ip = packet[IPv6]
+            udp = packet[UDP]
+            self.assertEqual(ip.dst, 'ff02::1:2')
+            self.assertEqual(udp.sport, 546)
+            self.assertEqual(udp.dport, 547)
+            dhcpv6 = packet[msg_type]
+            elapsed_time = dhcpv6[DHCP6OptElapsedTime]
+            if (is_resend):
+                self.assertNotEqual(elapsed_time.elapsedtime, 0)
+            else:
+                self.assertEqual(elapsed_time.elapsedtime, 0)
+        except BaseException:
+            packet.show()
+            raise
+
+    def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
+        if timeout is None:
+            timeout = 3
+        rx_list = self.pg0.get_capture(1, timeout=timeout)
+        packet = rx_list[0]
+        self.validate_packet(packet, msg_type, is_resend=is_resend)
+
+    def wait_for_solicit(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
+
+    def wait_for_request(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
+
+    def wait_for_renew(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
+
+    def wait_for_rebind(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
+
+    def wait_for_release(self, timeout=None, is_resend=False):
+        self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
+
+    def send_packet(self, msg_type, t1=None, t2=None, iapdopt=None):
+        if t1 is None:
+            t1 = self.T1
+        if t2 is None:
+            t2 = self.T2
+        if iapdopt is None:
+            opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2)
+        else:
+            opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2, iapdopt=iapdopt)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
+                  dst=self.pg0.local_ip6_ll) /
+             UDP(sport=547, dport=546) /
+             msg_type(trid=self.trid) /
+             DHCP6OptServerId(duid=self.server_duid) /
+             DHCP6OptClientId(duid=self.client_duid) /
+             opt_ia_pd
+             )
+        self.pg0.add_stream([p])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+    def send_advertise(self, t1=None, t2=None, iapdopt=None):
+        self.send_packet(DHCP6_Advertise, t1, t2, iapdopt)
+
+    def send_reply(self, t1=None, t2=None, iapdopt=None):
+        self.send_packet(DHCP6_Reply, t1, t2, iapdopt)
+
+    def test_T1_and_T2_timeouts(self):
+        """ Test T1 and T2 timeouts """
+
+        self.wait_for_solicit()
+        self.send_advertise()
+        self.wait_for_request()
+        self.send_reply()
+
+        self.sleep(1)
+
+        self.wait_for_renew()
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        self.sleep(1)
+
+        self.wait_for_rebind()
+
+    def test_prefixes(self):
+        """ Test handling of prefixes """
+
+        address1 = '::2:0:0:0:405/60'
+        address2 = '::76:0:0:0:406/62'
+        try:
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                address_with_prefix=address1,
+                prefix_group=self.prefix_group)
+
+            ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=2,
+                                          validlft=3)
+
+            self.wait_for_solicit()
+            self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
+            self.wait_for_request()
+            self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
+            self.sleep(0.1)
+
+            # check FIB for new address
+            new_addresses = self.get_addresses()
+            self.assertEqual(len(new_addresses), 1)
+            addr = list(new_addresses)[0]
+            self.assertEqual(addr, '7:8:0:2::405')
+
+            self.sleep(1)
+
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                address_with_prefix=address2,
+                prefix_group=self.prefix_group)
+
+            self.sleep(1)
+
+            # check FIB contains 2 addresses
+            fib = self.vapi.ip_route_dump(0, True)
+            addresses = set(self.get_interface_addresses(fib, self.pg1))
+            new_addresses = addresses.difference(self.initial_addresses)
+            self.assertEqual(len(new_addresses), 2)
+            addr1 = list(new_addresses)[0]
+            addr2 = list(new_addresses)[1]
+            if addr1 == '7:8:0:76::406':
+                addr1, addr2 = addr2, addr1
+            self.assertEqual(addr1, '7:8:0:2::405')
+            self.assertEqual(addr2, '7:8:0:76::406')
+
+            self.sleep(1)
+
+            # check that the addresses are deleted
+            fib = self.vapi.ip_route_dump(0, True)
+            addresses = set(self.get_interface_addresses(fib, self.pg1))
+            new_addresses = addresses.difference(self.initial_addresses)
+            self.assertEqual(len(new_addresses), 0)
+
+        finally:
+            if address1 is not None:
+                self.vapi.ip6_add_del_address_using_prefix(
+                    sw_if_index=self.pg1.sw_if_index,
+                    address_with_prefix=address1,
+                    prefix_group=self.prefix_group, is_add=0)
+            if address2 is not None:
+                self.vapi.ip6_add_del_address_using_prefix(
+                    sw_if_index=self.pg1.sw_if_index,
+                    address_with_prefix=address2,
+                    prefix_group=self.prefix_group, is_add=0)
+
+    def test_sending_client_messages_solicit(self):
+        """ VPP receives messages from DHCPv6 client """
+
+        self.wait_for_solicit()
+        self.send_packet(DHCP6_Solicit)
+        self.send_packet(DHCP6_Request)
+        self.send_packet(DHCP6_Renew)
+        self.send_packet(DHCP6_Rebind)
+        self.sleep(1)
+        self.wait_for_solicit(is_resend=True)
+
+    def test_sending_inappropriate_packets(self):
+        """ Server sends messages with inappropriate message types """
+
+        self.wait_for_solicit()
+        self.send_reply()
+        self.wait_for_solicit(is_resend=True)
+        self.send_advertise()
+        self.wait_for_request()
+        self.send_advertise()
+        self.wait_for_request(is_resend=True)
+        self.send_reply()
+        self.wait_for_renew()
+
+    def test_no_prefix_available_in_advertise(self):
+        """ Advertise message contains NoPrefixAvail status code """
+
+        self.wait_for_solicit()
+        noavail = DHCP6OptStatusCode(statuscode=6)  # NoPrefixAvail
+        self.send_advertise(iapdopt=noavail)
+        self.wait_for_solicit(is_resend=True)
+
+    def test_preferred_greater_than_valid_lifetime(self):
+        """ Preferred lifetime is greater than valid lifetime """
+
+        address1 = '::2:0:0:0:405/60'
+        try:
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                address_with_prefix=address1,
+                prefix_group=self.prefix_group)
+
+            self.wait_for_solicit()
+            self.send_advertise()
+            self.wait_for_request()
+            ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
+                                          validlft=3)
+            self.send_reply(iapdopt=ia_pd_opts)
+
+            self.sleep(0.5)
+
+            # check FIB contains no addresses
+            fib = self.vapi.ip_route_dump(0, True)
+            addresses = set(self.get_interface_addresses(fib, self.pg1))
+            new_addresses = addresses.difference(self.initial_addresses)
+            self.assertEqual(len(new_addresses), 0)
+
+        finally:
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                address_with_prefix=address1,
+                prefix_group=self.prefix_group,
+                is_add=0)
+
+    def test_T1_greater_than_T2(self):
+        """ T1 is greater than T2 """
+
+        address1 = '::2:0:0:0:405/60'
+        try:
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                address_with_prefix=address1,
+                prefix_group=self.prefix_group)
+
+            self.wait_for_solicit()
+            self.send_advertise()
+            self.wait_for_request()
+            ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
+                                          validlft=8)
+            self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts)
+
+            self.sleep(0.5)
+
+            # check FIB contains no addresses
+            fib = self.vapi.ip_route_dump(0, True)
+            addresses = set(self.get_interface_addresses(fib, self.pg1))
+            new_addresses = addresses.difference(self.initial_addresses)
+            self.assertEqual(len(new_addresses), 0)
+
+        finally:
+            self.vapi.ip6_add_del_address_using_prefix(
+                sw_if_index=self.pg1.sw_if_index,
+                prefix_group=self.prefix_group,
+                address_with_prefix=address1,
+                is_add=False)
diff --git a/test/test_dns.py b/test/test_dns.py
new file mode 100644
index 0000000..fb8958c
--- /dev/null
+++ b/test/test_dns.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+from ipaddress import *
+
+import scapy.compat
+from scapy.contrib.mpls import MPLS
+from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.dns import DNSRR, DNS, DNSQR
+
+
+class TestDns(VppTestCase):
+    """ Dns Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDns, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDns, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDns, self).setUp()
+
+        self.create_pg_interfaces(range(1))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+    def tearDown(self):
+        super(TestDns, self).tearDown()
+
+    def create_stream(self, src_if):
+        """Create input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for.
+        """
+        good_request = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                        IP(src=src_if.remote_ip4) /
+                        UDP(sport=1234, dport=53) /
+                        DNS(rd=1, qd=DNSQR(qname="bozo.clown.org")))
+
+        bad_request = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                       IP(src=src_if.remote_ip4) /
+                       UDP(sport=1234, dport=53) /
+                       DNS(rd=1, qd=DNSQR(qname="no.clown.org")))
+        pkts = [good_request, bad_request]
+        return pkts
+
+    def verify_capture(self, dst_if, capture):
+        """Verify captured input packet stream for defined interface.
+
+        :param VppInterface dst_if: Interface to verify captured packet stream
+            for.
+        :param list capture: Captured packet stream.
+        """
+        self.logger.info("Verifying capture on interface %s" % dst_if.name)
+        for packet in capture:
+            dns = packet[DNS]
+            self.assertEqual(dns.an[0].rdata, '1.2.3.4')
+
+    def test_dns_unittest(self):
+        """ DNS Name Resolver Basic Functional Test """
+
+        # Set up an upstream name resolver. We won't actually go there
+        self.vapi.dns_name_server_add_del(
+            is_ip6=0, is_add=1, server_address=IPv4Address(u'8.8.8.8').packed)
+
+        # Enable name resolution
+        self.vapi.dns_enable_disable(enable=1)
+
+        # Manually add a static dns cache entry
+        self.logger.info(self.vapi.cli("dns cache add bozo.clown.org 1.2.3.4"))
+
+        # Test the binary API
+        rv = self.vapi.dns_resolve_name(name=b'bozo.clown.org')
+        self.assertEqual(rv.ip4_address, IPv4Address(u'1.2.3.4').packed)
+
+        # Configure 127.0.0.1/8 on the pg interface
+        self.vapi.sw_interface_add_del_address(
+            sw_if_index=self.pg0.sw_if_index,
+            prefix="127.0.0.1/8")
+
+        # Send a couple of DNS request packets, one for bozo.clown.org
+        # and one for no.clown.org which won't resolve
+
+        pkts = self.create_stream(self.pg0)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+
+        self.pg_start()
+        pkts = self.pg0.get_capture(1)
+        self.verify_capture(self.pg0, pkts)
+
+        # Make sure that the cache contents are correct
+        str = self.vapi.cli("show dns cache verbose")
+        self.assertIn('1.2.3.4', str)
+        self.assertIn('[P] no.clown.org:', str)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_dslite.py b/test/test_dslite.py
new file mode 100644
index 0000000..2b4f4aa
--- /dev/null
+++ b/test/test_dslite.py
@@ -0,0 +1,341 @@
+#!/usr/bin/env python3
+
+import socket
+import unittest
+import struct
+import random
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+
+import scapy.compat
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
+    ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
+from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
+from scapy.layers.l2 import Ether, ARP, GRE
+from scapy.data import IP_PROTOS
+from scapy.packet import bind_layers, Raw
+from util import ppp
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from time import sleep
+from util import ip4_range
+from vpp_papi import mac_pton
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogFacility, SyslogSeverity
+from io import BytesIO
+from vpp_papi import VppEnum
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
+from vpp_neighbor import VppNeighbor
+from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
+    IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
+    PacketListField
+from ipaddress import IPv6Network
+
+
+@tag_fixme_vpp_workers
+class TestDSlite(VppTestCase):
+    """ DS-Lite Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDSlite, cls).setUpClass()
+
+        try:
+            cls.nat_addr = '10.0.0.3'
+
+            cls.create_pg_interfaces(range(3))
+            cls.pg0.admin_up()
+            cls.pg0.config_ip4()
+            cls.pg0.resolve_arp()
+            cls.pg1.admin_up()
+            cls.pg1.config_ip6()
+            cls.pg1.generate_remote_hosts(2)
+            cls.pg1.configure_ipv6_neighbors()
+            cls.pg2.admin_up()
+            cls.pg2.config_ip4()
+            cls.pg2.resolve_arp()
+
+        except Exception:
+            super(TestDSlite, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDSlite, cls).tearDownClass()
+
+    def verify_syslog_apmadd(self, data, isaddr, isport, xsaddr, xsport,
+                             sv6enc, proto):
+        message = data.decode('utf-8')
+        try:
+            message = SyslogMessage.parse(message)
+        except ParseError as e:
+            self.logger.error(e)
+        else:
+            self.assertEqual(message.severity, SyslogSeverity.info)
+            self.assertEqual(message.appname, 'NAT')
+            self.assertEqual(message.msgid, 'APMADD')
+            sd_params = message.sd.get('napmap')
+            self.assertTrue(sd_params is not None)
+            self.assertEqual(sd_params.get('IATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('ISADDR'), isaddr)
+            self.assertEqual(sd_params.get('ISPORT'), "%d" % isport)
+            self.assertEqual(sd_params.get('XATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('XSADDR'), xsaddr)
+            self.assertEqual(sd_params.get('XSPORT'), "%d" % xsport)
+            self.assertEqual(sd_params.get('PROTO'), "%d" % proto)
+            self.assertTrue(sd_params.get('SSUBIX') is not None)
+            self.assertEqual(sd_params.get('SV6ENC'), sv6enc)
+
+    def test_dslite(self):
+        """ Test DS-Lite """
+        nat_config = self.vapi.nat_show_config()
+        self.assertEqual(0, nat_config.dslite_ce)
+
+        self.vapi.dslite_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                 end_addr=self.nat_addr,
+                                                 is_add=1)
+        aftr_ip4 = '192.0.0.1'
+        aftr_ip6 = '2001:db8:85a3::8a2e:370:1'
+        self.vapi.dslite_set_aftr_addr(ip4_addr=aftr_ip4, ip6_addr=aftr_ip6)
+        self.vapi.syslog_set_sender(self.pg2.local_ip4, self.pg2.remote_ip4)
+
+        # UDP
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[0].ip6) /
+             IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
+             UDP(sport=20000, dport=10000))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        capture = capture[0]
+        self.assertFalse(capture.haslayer(IPv6))
+        self.assertEqual(capture[IP].src, self.nat_addr)
+        self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
+        self.assertNotEqual(capture[UDP].sport, 20000)
+        self.assertEqual(capture[UDP].dport, 10000)
+        self.assert_packet_checksums_valid(capture)
+        out_port = capture[UDP].sport
+        capture = self.pg2.get_capture(1)
+        self.verify_syslog_apmadd(capture[0][Raw].load, '192.168.1.1',
+                                  20000, self.nat_addr, out_port,
+                                  self.pg1.remote_hosts[0].ip6, IP_PROTOS.udp)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
+             UDP(sport=10000, dport=out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, aftr_ip6)
+        self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)
+        self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
+        self.assertEqual(capture[IP].dst, '192.168.1.1')
+        self.assertEqual(capture[UDP].sport, 10000)
+        self.assertEqual(capture[UDP].dport, 20000)
+        self.assert_packet_checksums_valid(capture)
+
+        # TCP
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[1].ip6) /
+             IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
+             TCP(sport=20001, dport=10001))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        capture = capture[0]
+        self.assertFalse(capture.haslayer(IPv6))
+        self.assertEqual(capture[IP].src, self.nat_addr)
+        self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
+        self.assertNotEqual(capture[TCP].sport, 20001)
+        self.assertEqual(capture[TCP].dport, 10001)
+        self.assert_packet_checksums_valid(capture)
+        out_port = capture[TCP].sport
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
+             TCP(sport=10001, dport=out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, aftr_ip6)
+        self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
+        self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
+        self.assertEqual(capture[IP].dst, '192.168.1.1')
+        self.assertEqual(capture[TCP].sport, 10001)
+        self.assertEqual(capture[TCP].dport, 20001)
+        self.assert_packet_checksums_valid(capture)
+
+        # ICMP
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[1].ip6) /
+             IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
+             ICMP(id=4000, type='echo-request'))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        capture = capture[0]
+        self.assertFalse(capture.haslayer(IPv6))
+        self.assertEqual(capture[IP].src, self.nat_addr)
+        self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
+        self.assertNotEqual(capture[ICMP].id, 4000)
+        self.assert_packet_checksums_valid(capture)
+        out_id = capture[ICMP].id
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
+             ICMP(id=out_id, type='echo-reply'))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, aftr_ip6)
+        self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
+        self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
+        self.assertEqual(capture[IP].dst, '192.168.1.1')
+        self.assertEqual(capture[ICMP].id, 4000)
+        self.assert_packet_checksums_valid(capture)
+
+        # ping DS-Lite AFTR tunnel endpoint address
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_hosts[1].ip6, dst=aftr_ip6) /
+             ICMPv6EchoRequest())
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, aftr_ip6)
+        self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
+        self.assertTrue(capture.haslayer(ICMPv6EchoReply))
+
+        b4s = self.statistics.get_counter('/dslite/total-b4s')
+        self.assertEqual(b4s[0][0], 2)
+        sessions = self.statistics.get_counter('/dslite/total-sessions')
+        self.assertEqual(sessions[0][0], 3)
+
+    def tearDown(self):
+        super(TestDSlite, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show dslite pool"))
+        self.logger.info(
+            self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
+        self.logger.info(self.vapi.cli("show dslite sessions"))
+
+
+class TestDSliteCE(VppTestCase):
+    """ DS-Lite CE Test Cases """
+
+    @classmethod
+    def setUpConstants(cls):
+        super(TestDSliteCE, cls).setUpConstants()
+        cls.vpp_cmdline.extend(["dslite", "{", "ce", "}"])
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDSliteCE, cls).setUpClass()
+
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg0.admin_up()
+            cls.pg0.config_ip4()
+            cls.pg0.resolve_arp()
+            cls.pg1.admin_up()
+            cls.pg1.config_ip6()
+            cls.pg1.generate_remote_hosts(1)
+            cls.pg1.configure_ipv6_neighbors()
+
+        except Exception:
+            super(TestDSliteCE, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDSliteCE, cls).tearDownClass()
+
+    def test_dslite_ce(self):
+        """ Test DS-Lite CE """
+
+        # TODO: add message to retrieve dslite config
+        # nat_config = self.vapi.nat_show_config()
+        # self.assertEqual(1, nat_config.dslite_ce)
+
+        b4_ip4 = '192.0.0.2'
+        b4_ip6 = '2001:db8:62aa::375e:f4c1:1'
+        self.vapi.dslite_set_b4_addr(ip4_addr=b4_ip4, ip6_addr=b4_ip6)
+
+        aftr_ip4 = '192.0.0.1'
+        aftr_ip6 = '2001:db8:85a3::8a2e:370:1'
+        aftr_ip6_n = socket.inet_pton(socket.AF_INET6, aftr_ip6)
+        self.vapi.dslite_set_aftr_addr(ip4_addr=aftr_ip4, ip6_addr=aftr_ip6)
+
+        r1 = VppIpRoute(self, aftr_ip6, 128,
+                        [VppRoutePath(self.pg1.remote_ip6,
+                                      self.pg1.sw_if_index)])
+        r1.add_vpp_config()
+
+        # UDP encapsulation
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(dst=self.pg1.remote_ip4, src=self.pg0.remote_ip4) /
+             UDP(sport=10000, dport=20000))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, b4_ip6)
+        self.assertEqual(capture[IPv6].dst, aftr_ip6)
+        self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
+        self.assertEqual(capture[IP].dst, self.pg1.remote_ip4)
+        self.assertEqual(capture[UDP].sport, 10000)
+        self.assertEqual(capture[UDP].dport, 20000)
+        self.assert_packet_checksums_valid(capture)
+
+        # UDP decapsulation
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(dst=b4_ip6, src=aftr_ip6) /
+             IP(dst=self.pg0.remote_ip4, src=self.pg1.remote_ip4) /
+             UDP(sport=20000, dport=10000))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        capture = capture[0]
+        self.assertFalse(capture.haslayer(IPv6))
+        self.assertEqual(capture[IP].src, self.pg1.remote_ip4)
+        self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
+        self.assertEqual(capture[UDP].sport, 20000)
+        self.assertEqual(capture[UDP].dport, 10000)
+        self.assert_packet_checksums_valid(capture)
+
+        # ping DS-Lite B4 tunnel endpoint address
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_hosts[0].ip6, dst=b4_ip6) /
+             ICMPv6EchoRequest())
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        capture = capture[0]
+        self.assertEqual(capture[IPv6].src, b4_ip6)
+        self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)
+        self.assertTrue(capture.haslayer(ICMPv6EchoReply))
+
+    def tearDown(self):
+        super(TestDSliteCE, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(
+            self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
+        self.logger.info(
+            self.vapi.cli("show dslite b4-tunnel-endpoint-address"))
diff --git a/test/test_dvr.py b/test/test_dvr.py
new file mode 100644
index 0000000..8531b85
--- /dev/null
+++ b/test/test_dvr.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python3
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
+from vpp_l2 import L2_PORT_TYPE
+from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet import IP, UDP
+from socket import AF_INET, inet_pton
+from ipaddress import IPv4Network
+
+NUM_PKTS = 67
+
+
+class TestDVR(VppTestCase):
+    """ Distributed Virtual Router """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDVR, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDVR, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDVR, self).setUp()
+
+        self.create_pg_interfaces(range(4))
+        self.create_loopback_interfaces(1)
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+        self.loop0.config_ip4()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.admin_down()
+        self.loop0.unconfig_ip4()
+
+        super(TestDVR, self).tearDown()
+
+    def assert_same_mac_addr(self, tx, rx):
+        t_eth = tx[Ether]
+        for p in rx:
+            r_eth = p[Ether]
+            self.assertEqual(t_eth.src, r_eth.src)
+            self.assertEqual(t_eth.dst, r_eth.dst)
+
+    def assert_has_vlan_tag(self, tag, rx):
+        for p in rx:
+            r_1q = p[Dot1Q]
+            self.assertEqual(tag, r_1q.vlan)
+
+    def assert_has_no_tag(self, rx):
+        for p in rx:
+            self.assertFalse(p.haslayer(Dot1Q))
+
+    def test_dvr(self):
+        """ Distributed Virtual Router """
+
+        #
+        # A packet destined to an IP address that is L2 bridged via
+        # a non-tag interface
+        #
+        ip_non_tag_bridged = "10.10.10.10"
+        ip_tag_bridged = "10.10.10.11"
+        any_src_addr = "1.1.1.1"
+
+        pkt_no_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.loop0.local_mac) /
+                      IP(src=any_src_addr,
+                         dst=ip_non_tag_bridged) /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_tag = (Ether(src=self.pg0.remote_mac,
+                         dst=self.loop0.local_mac) /
+                   IP(src=any_src_addr,
+                      dst=ip_tag_bridged) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))
+
+        #
+        # Two sub-interfaces so we can test VLAN tag push/pop
+        #
+        sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
+        sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
+        sub_if_on_pg2.admin_up()
+        sub_if_on_pg3.admin_up()
+
+        #
+        # Put all the interfaces into a new bridge domain
+        #
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+            port_type=L2_PORT_TYPE.BVI)
+
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=92)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=93)
+
+        #
+        # Add routes to bridge the traffic via a tagged an nontagged interface
+        #
+        route_no_tag = VppIpRoute(
+            self, ip_non_tag_bridged, 32,
+            [VppRoutePath("0.0.0.0",
+                          self.pg1.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_no_tag.add_vpp_config()
+
+        #
+        # Inject the packet that arrives and leaves on a non-tagged interface
+        # Since it's 'bridged' expect that the MAC headed is unchanged.
+        #
+        rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_no_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        #
+        # Add routes to bridge the traffic via a tagged interface
+        #
+        route_with_tag = VppIpRoute(
+            self, ip_tag_bridged, 32,
+            [VppRoutePath("0.0.0.0",
+                          sub_if_on_pg3.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_with_tag.add_vpp_config()
+
+        #
+        # Inject the packet that arrives non-tag and leaves on a tagged
+        # interface
+        #
+        rx = self.send_and_expect(self.pg0, pkt_tag * NUM_PKTS, self.pg3)
+        self.assert_same_mac_addr(pkt_tag, rx)
+        self.assert_has_vlan_tag(93, rx)
+
+        #
+        # Tag to tag
+        #
+        pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
+                                dst=self.loop0.local_mac) /
+                          Dot1Q(vlan=92) /
+                          IP(src=any_src_addr,
+                             dst=ip_tag_bridged) /
+                          UDP(sport=1234, dport=1234) /
+                          Raw(b'\xa5' * 100))
+
+        rx = self.send_and_expect(self.pg2,
+                                  pkt_tag_to_tag * NUM_PKTS,
+                                  self.pg3)
+        self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+        self.assert_has_vlan_tag(93, rx)
+
+        #
+        # Tag to non-Tag
+        #
+        pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
+                                    dst=self.loop0.local_mac) /
+                              Dot1Q(vlan=92) /
+                              IP(src=any_src_addr,
+                                 dst=ip_non_tag_bridged) /
+                              UDP(sport=1234, dport=1234) /
+                              Raw(b'\xa5' * 100))
+
+        rx = self.send_and_expect(self.pg2,
+                                  pkt_tag_to_non_tag * NUM_PKTS,
+                                  self.pg1)
+        self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        #
+        # Add an output L3 ACL that will block the traffic
+        #
+        rule_1 = AclRule(is_permit=0, proto=17, ports=1234,
+                         src_prefix=IPv4Network((any_src_addr, 32)),
+                         dst_prefix=IPv4Network((ip_non_tag_bridged, 32)))
+        acl = VppAcl(self, rules=[rule_1])
+        acl.add_vpp_config()
+
+        #
+        # Apply the ACL on the output interface
+        #
+        acl_if1 = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+                                  n_input=0, acls=[acl])
+        acl_if1.add_vpp_config()
+
+        #
+        # Send packet's that should match the ACL and be dropped
+        #
+        rx = self.send_and_assert_no_replies(self.pg2,
+                                             pkt_tag_to_non_tag * NUM_PKTS)
+
+        #
+        # cleanup
+        #
+        acl_if1.remove_vpp_config()
+        acl.remove_vpp_config()
+
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+            port_type=L2_PORT_TYPE.BVI, enable=0)
+
+        #
+        # Do a FIB dump to make sure the paths are correctly reported as DVR
+        #
+        routes = self.vapi.ip_route_dump(0)
+
+        for r in routes:
+            if (ip_tag_bridged == str(r.route.prefix.network_address)):
+                self.assertEqual(r.route.paths[0].sw_if_index,
+                                 sub_if_on_pg3.sw_if_index)
+                self.assertEqual(r.route.paths[0].type,
+                                 FibPathType.FIB_PATH_TYPE_DVR)
+            if (ip_non_tag_bridged == str(r.route.prefix.network_address)):
+                self.assertEqual(r.route.paths[0].sw_if_index,
+                                 self.pg1.sw_if_index)
+                self.assertEqual(r.route.paths[0].type,
+                                 FibPathType.FIB_PATH_TYPE_DVR)
+
+        #
+        # the explicit route delete is require so it happens before
+        # the sbu-interface delete. subinterface delete is required
+        # because that object type does not use the object registry
+        #
+        route_no_tag.remove_vpp_config()
+        route_with_tag.remove_vpp_config()
+        sub_if_on_pg3.remove_vpp_config()
+        sub_if_on_pg2.remove_vpp_config()
+
+    def test_l2_emulation(self):
+        """ L2 Emulation """
+
+        #
+        # non distinct L3 packets, in the tag/non-tag combos
+        #
+        pkt_no_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.pg1.remote_mac) /
+                      IP(src="2.2.2.2",
+                         dst="1.1.1.1") /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_to_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.pg2.remote_mac) /
+                      IP(src="2.2.2.2",
+                         dst="1.1.1.2") /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_from_tag = (Ether(src=self.pg3.remote_mac,
+                              dst=self.pg2.remote_mac) /
+                        Dot1Q(vlan=93) /
+                        IP(src="2.2.2.2",
+                           dst="1.1.1.1") /
+                        UDP(sport=1234, dport=1234) /
+                        Raw(b'\xa5' * 100))
+        pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
+                                 dst=self.pg2.remote_mac) /
+                           Dot1Q(vlan=93) /
+                           IP(src="2.2.2.2",
+                              dst="1.1.1.2") /
+                           UDP(sport=1234, dport=1234) /
+                           Raw(b'\xa5' * 100))
+        pkt_bcast = (Ether(src=self.pg0.remote_mac,
+                           dst="ff:ff:ff:ff:ff:ff") /
+                     IP(src="2.2.2.2",
+                        dst="255.255.255.255") /
+                     UDP(sport=1234, dport=1234) /
+                     Raw(b'\xa5' * 100))
+
+        #
+        # A couple of sub-interfaces for tags
+        #
+        sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
+        sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
+        sub_if_on_pg2.admin_up()
+        sub_if_on_pg3.admin_up()
+
+        #
+        # Put all the interfaces into a new bridge domain
+        #
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=92)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=93)
+
+        #
+        # Disable UU flooding, learning and ARP termination. makes this test
+        # easier as unicast packets are dropped if not extracted.
+        #
+        self.vapi.bridge_flags(bd_id=1, is_set=0,
+                               flags=(1 << 0) | (1 << 3) | (1 << 4))
+
+        #
+        # Add a DVR route to steer traffic at L3
+        #
+        route_1 = VppIpRoute(
+            self, "1.1.1.1", 32,
+            [VppRoutePath("0.0.0.0",
+                          self.pg1.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_2 = VppIpRoute(
+            self, "1.1.1.2", 32,
+            [VppRoutePath("0.0.0.0",
+                          sub_if_on_pg2.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_1.add_vpp_config()
+        route_2.add_vpp_config()
+
+        #
+        # packets are dropped because bridge does not flood unknown unicast
+        #
+        self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
+
+        #
+        # Enable L3 extraction on pgs
+        #
+        self.vapi.l2_emulation(self.pg0.sw_if_index)
+        self.vapi.l2_emulation(self.pg1.sw_if_index)
+        self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index)
+        self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index)
+
+        #
+        # now we expect the packet forward according to the DVR route
+        #
+        rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_no_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        rx = self.send_and_expect(self.pg0, pkt_to_tag * NUM_PKTS, self.pg2)
+        self.assert_same_mac_addr(pkt_to_tag, rx)
+        self.assert_has_vlan_tag(92, rx)
+
+        rx = self.send_and_expect(self.pg3, pkt_from_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_from_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        rx = self.send_and_expect(self.pg3,
+                                  pkt_from_to_tag * NUM_PKTS,
+                                  self.pg2)
+        self.assert_same_mac_addr(pkt_from_tag, rx)
+        self.assert_has_vlan_tag(92, rx)
+
+        #
+        # but broadcast packets are still flooded
+        #
+        self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
+
+        #
+        # cleanup
+        #
+        self.vapi.l2_emulation(self.pg0.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(self.pg1.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index,
+                               enable=0)
+
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
+
+        route_1.remove_vpp_config()
+        route_2.remove_vpp_config()
+        sub_if_on_pg3.remove_vpp_config()
+        sub_if_on_pg2.remove_vpp_config()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_endian.py b/test/test_endian.py
new file mode 100644
index 0000000..462ee2b
--- /dev/null
+++ b/test/test_endian.py
@@ -0,0 +1,38 @@
+#  Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import framework
+import vpp_papi_provider
+
+F64_ONE = 1.0
+
+
+class TestEndian(framework.VppTestCase):
+    """TestEndian"""
+
+    def test_f64_endian_value(self):
+        try:
+            rv = self.vapi.get_f64_endian_value(f64_one=F64_ONE)
+            self.assertEqual(rv.f64_one_result, F64_ONE,
+                             "client incorrectly deserializes f64 values.  "
+                             "Expected: %r. Received: %r." % (
+                                 F64_ONE, rv.f64_one_result))
+        except vpp_papi_provider.UnexpectedApiReturnValueError:
+            self.fail('client incorrectly serializes f64 values.')
+
+    def test_get_f64_increment_by_one(self):
+        expected = 43.0
+        rv = self.vapi.get_f64_increment_by_one(f64_value=42.0)
+        self.assertEqual(rv.f64_value, expected, 'Expected %r, received:%r.'
+                         % (expected, rv.f64_value))
diff --git a/test/test_fib.py b/test/test_fib.py
new file mode 100644
index 0000000..7c08722
--- /dev/null
+++ b/test/test_fib.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+
+
+@tag_fixme_vpp_workers
+class TestFIB(VppTestCase):
+    """ FIB Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestFIB, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestFIB, cls).tearDownClass()
+
+    def test_fib(self):
+        """ FIB Unit Tests """
+        error = self.vapi.cli("test fib")
+
+        # shameless test of CLIs to bump lcov results...
+        # no i mean to ensure they don't crash
+        self.logger.info(self.vapi.cli("sh fib source"))
+        self.logger.info(self.vapi.cli("sh fib source prio"))
+        self.logger.info(self.vapi.cli("sh fib memory"))
+        self.logger.info(self.vapi.cli("sh fib entry"))
+        self.logger.info(self.vapi.cli("sh fib entry 0"))
+        self.logger.info(self.vapi.cli("sh fib entry 10000"))
+        self.logger.info(self.vapi.cli("sh fib entry-delegate"))
+        self.logger.info(self.vapi.cli("sh fib paths"))
+        self.logger.info(self.vapi.cli("sh fib paths 0"))
+        self.logger.info(self.vapi.cli("sh fib paths 10000"))
+        self.logger.info(self.vapi.cli("sh fib path-list"))
+        self.logger.info(self.vapi.cli("sh fib path-list 0"))
+        self.logger.info(self.vapi.cli("sh fib path-list 10000"))
+        self.logger.info(self.vapi.cli("sh fib walk"))
+        self.logger.info(self.vapi.cli("sh fib uRPF"))
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn("Failed", error)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_flowprobe.py b/test/test_flowprobe.py
new file mode 100644
index 0000000..517729d
--- /dev/null
+++ b/test/test_flowprobe.py
@@ -0,0 +1,1094 @@
+#!/usr/bin/env python3
+from __future__ import print_function
+import binascii
+import random
+import socket
+import unittest
+import time
+import re
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, TCP, UDP
+from scapy.layers.inet6 import IPv6
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import tag_run_solo
+from vpp_object import VppObject
+from vpp_pg_interface import CaptureTimeoutError
+from util import ppp
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_papi.macaddress import mac_ntop
+from socket import inet_ntop
+from vpp_papi import VppEnum
+
+
+class VppCFLOW(VppObject):
+    """CFLOW object for IPFIX exporter and Flowprobe feature"""
+
+    def __init__(self, test, intf='pg2', active=0, passive=0, timeout=100,
+                 mtu=1024, datapath='l2', layer='l2 l3 l4'):
+        self._test = test
+        self._intf = intf
+        self._active = active
+        if passive == 0 or passive < active:
+            self._passive = active+1
+        else:
+            self._passive = passive
+        self._datapath = datapath           # l2 ip4 ip6
+        self._collect = layer               # l2 l3 l4
+        self._timeout = timeout
+        self._mtu = mtu
+        self._configured = False
+
+    def add_vpp_config(self):
+        self.enable_exporter()
+        l2_flag = 0
+        l3_flag = 0
+        l4_flag = 0
+        if 'l2' in self._collect.lower():
+            l2_flag = (VppEnum.vl_api_flowprobe_record_flags_t.
+                       FLOWPROBE_RECORD_FLAG_L2)
+        if 'l3' in self._collect.lower():
+            l3_flag = (VppEnum.vl_api_flowprobe_record_flags_t.
+                       FLOWPROBE_RECORD_FLAG_L3)
+        if 'l4' in self._collect.lower():
+            l4_flag = (VppEnum.vl_api_flowprobe_record_flags_t.
+                       FLOWPROBE_RECORD_FLAG_L4)
+        self._test.vapi.flowprobe_params(
+            record_flags=(l2_flag | l3_flag | l4_flag),
+            active_timer=self._active, passive_timer=self._passive)
+        self.enable_flowprobe_feature()
+        self._test.vapi.cli("ipfix flush")
+        self._configured = True
+
+    def remove_vpp_config(self):
+        self.disable_exporter()
+        self.disable_flowprobe_feature()
+        self._test.vapi.cli("ipfix flush")
+        self._configured = False
+
+    def enable_exporter(self):
+        self._test.vapi.set_ipfix_exporter(
+            collector_address=self._test.pg0.remote_ip4,
+            src_address=self._test.pg0.local_ip4,
+            path_mtu=self._mtu,
+            template_interval=self._timeout)
+
+    def enable_flowprobe_feature(self):
+        self._test.vapi.ppcli("flowprobe feature add-del %s %s" %
+                              (self._intf, self._datapath))
+
+    def disable_exporter(self):
+        self._test.vapi.cli("set ipfix exporter collector 0.0.0.0")
+
+    def disable_flowprobe_feature(self):
+        self._test.vapi.cli("flowprobe feature add-del %s %s disable" %
+                            (self._intf, self._datapath))
+
+    def object_id(self):
+        return "ipfix-collector-%s-%s" % (self._src, self.dst)
+
+    def query_vpp_config(self):
+        return self._configured
+
+    def verify_templates(self, decoder=None, timeout=1, count=3):
+        templates = []
+        p = self._test.wait_for_cflow_packet(self._test.collector, 2, timeout)
+        self._test.assertTrue(p.haslayer(IPFIX))
+        if decoder is not None and p.haslayer(Template):
+            templates.append(p[Template].templateID)
+            decoder.add_template(p.getlayer(Template))
+        if count > 1:
+            p = self._test.wait_for_cflow_packet(self._test.collector, 2)
+            self._test.assertTrue(p.haslayer(IPFIX))
+            if decoder is not None and p.haslayer(Template):
+                templates.append(p[Template].templateID)
+                decoder.add_template(p.getlayer(Template))
+        if count > 2:
+            p = self._test.wait_for_cflow_packet(self._test.collector, 2)
+            self._test.assertTrue(p.haslayer(IPFIX))
+            if decoder is not None and p.haslayer(Template):
+                templates.append(p[Template].templateID)
+                decoder.add_template(p.getlayer(Template))
+        return templates
+
+
+class MethodHolder(VppTestCase):
+    """ Flow-per-packet plugin: test L2, IP4, IP6 reporting """
+
+    # Test variables
+    debug_print = False
+    max_number_of_packets = 10
+    pkts = []
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        Perform standard class setup (defined by class method setUpClass in
+        class VppTestCase) before running the test case, set test case related
+        variables and configure VPP.
+        """
+        super(MethodHolder, cls).setUpClass()
+        try:
+            # Create pg interfaces
+            cls.create_pg_interfaces(range(9))
+
+            # Packet sizes
+            cls.pg_if_packet_sizes = [64, 512, 1518, 9018]
+
+            # Create BD with MAC learning and unknown unicast flooding disabled
+            # and put interfaces to this BD
+            cls.vapi.bridge_domain_add_del(bd_id=1, uu_flood=1, learn=1)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1._sw_if_index, bd_id=1)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg2._sw_if_index, bd_id=1)
+
+            # Set up all interfaces
+            for i in cls.pg_interfaces:
+                i.admin_up()
+
+            cls.pg0.config_ip4()
+            cls.pg0.configure_ipv4_neighbors()
+            cls.collector = cls.pg0
+
+            cls.pg1.config_ip4()
+            cls.pg1.resolve_arp()
+            cls.pg2.config_ip4()
+            cls.pg2.resolve_arp()
+            cls.pg3.config_ip4()
+            cls.pg3.resolve_arp()
+            cls.pg4.config_ip4()
+            cls.pg4.resolve_arp()
+            cls.pg7.config_ip4()
+            cls.pg8.config_ip4()
+            cls.pg8.configure_ipv4_neighbors()
+
+            cls.pg5.config_ip6()
+            cls.pg5.resolve_ndp()
+            cls.pg5.disable_ipv6_ra()
+            cls.pg6.config_ip6()
+            cls.pg6.resolve_ndp()
+            cls.pg6.disable_ipv6_ra()
+        except Exception:
+            super(MethodHolder, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(MethodHolder, cls).tearDownClass()
+
+    def create_stream(self, src_if=None, dst_if=None, packets=None,
+                      size=None, ip_ver='v4'):
+        """Create a packet stream to tickle the plugin
+
+        :param VppInterface src_if: Source interface for packet stream
+        :param VppInterface src_if: Dst interface for packet stream
+        """
+        if src_if is None:
+            src_if = self.pg1
+        if dst_if is None:
+            dst_if = self.pg2
+        self.pkts = []
+        if packets is None:
+            packets = random.randint(1, self.max_number_of_packets)
+        pkt_size = size
+        for p in range(0, packets):
+            if size is None:
+                pkt_size = random.choice(self.pg_if_packet_sizes)
+            info = self.create_packet_info(src_if, dst_if)
+            payload = self.info_to_payload(info)
+            p = Ether(src=src_if.remote_mac, dst=src_if.local_mac)
+            if ip_ver == 'v4':
+                p /= IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4)
+            else:
+                p /= IPv6(src=src_if.remote_ip6, dst=dst_if.remote_ip6)
+            p /= UDP(sport=1234, dport=4321)
+            p /= Raw(payload)
+            info.data = p.copy()
+            self.extend_packet(p, pkt_size)
+            self.pkts.append(p)
+
+    def verify_cflow_data(self, decoder, capture, cflow):
+        octets = 0
+        packets = 0
+        for p in capture:
+            octets += p[IP].len
+            packets += 1
+        if cflow.haslayer(Data):
+            data = decoder.decode_data_set(cflow.getlayer(Set))
+            for record in data:
+                self.assertEqual(int(binascii.hexlify(record[1]), 16), octets)
+                self.assertEqual(int(binascii.hexlify(record[2]), 16), packets)
+
+    def send_packets(self, src_if=None, dst_if=None):
+        if src_if is None:
+            src_if = self.pg1
+        if dst_if is None:
+            dst_if = self.pg2
+        self.pg_enable_capture([dst_if])
+        src_if.add_stream(self.pkts)
+        self.pg_start()
+        return dst_if.get_capture(len(self.pkts))
+
+    def verify_cflow_data_detail(self, decoder, capture, cflow,
+                                 data_set={1: 'octets', 2: 'packets'},
+                                 ip_ver='v4'):
+        if self.debug_print:
+            print(capture[0].show())
+        if cflow.haslayer(Data):
+            data = decoder.decode_data_set(cflow.getlayer(Set))
+            if self.debug_print:
+                print(data)
+            if ip_ver == 'v4':
+                ip_layer = capture[0][IP]
+            else:
+                ip_layer = capture[0][IPv6]
+            if data_set is not None:
+                for record in data:
+                    # skip flow if ingress/egress interface is 0
+                    if int(binascii.hexlify(record[10]), 16) == 0:
+                        continue
+                    if int(binascii.hexlify(record[14]), 16) == 0:
+                        continue
+
+                    for field in data_set:
+                        if field not in record.keys():
+                            continue
+                        value = data_set[field]
+                        if value == 'octets':
+                            value = ip_layer.len
+                            if ip_ver == 'v6':
+                                value += 40        # ??? is this correct
+                        elif value == 'packets':
+                            value = 1
+                        elif value == 'src_ip':
+                            if ip_ver == 'v4':
+                                ip = socket.inet_pton(socket.AF_INET,
+                                                      ip_layer.src)
+                            else:
+                                ip = socket.inet_pton(socket.AF_INET6,
+                                                      ip_layer.src)
+                            value = int(binascii.hexlify(ip), 16)
+                        elif value == 'dst_ip':
+                            if ip_ver == 'v4':
+                                ip = socket.inet_pton(socket.AF_INET,
+                                                      ip_layer.dst)
+                            else:
+                                ip = socket.inet_pton(socket.AF_INET6,
+                                                      ip_layer.dst)
+                            value = int(binascii.hexlify(ip), 16)
+                        elif value == 'sport':
+                            value = int(capture[0][UDP].sport)
+                        elif value == 'dport':
+                            value = int(capture[0][UDP].dport)
+                        self.assertEqual(int(binascii.hexlify(
+                            record[field]), 16),
+                                         value)
+
+    def verify_cflow_data_notimer(self, decoder, capture, cflows):
+        idx = 0
+        for cflow in cflows:
+            if cflow.haslayer(Data):
+                data = decoder.decode_data_set(cflow.getlayer(Set))
+            else:
+                raise Exception("No CFLOW data")
+
+            for rec in data:
+                p = capture[idx]
+                idx += 1
+                self.assertEqual(p[IP].len, int(
+                    binascii.hexlify(rec[1]), 16))
+                self.assertEqual(1, int(
+                    binascii.hexlify(rec[2]), 16))
+        self.assertEqual(len(capture), idx)
+
+    def wait_for_cflow_packet(self, collector_intf, set_id=2, timeout=1,
+                              expected=True):
+        """ wait for CFLOW packet and verify its correctness
+
+        :param timeout: how long to wait
+
+        :returns: tuple (packet, time spent waiting for packet)
+        """
+        self.logger.info("IPFIX: Waiting for CFLOW packet")
+        deadline = time.time() + timeout
+        counter = 0
+        # self.logger.debug(self.vapi.ppcli("show flow table"))
+        while True:
+            counter += 1
+            # sanity check
+            self.assert_in_range(counter, 0, 100, "number of packets ignored")
+            time_left = deadline - time.time()
+            try:
+                if time_left < 0 and expected:
+                    # self.logger.debug(self.vapi.ppcli("show flow table"))
+                    raise CaptureTimeoutError(
+                          "Packet did not arrive within timeout")
+                p = collector_intf.wait_for_packet(timeout=time_left)
+            except CaptureTimeoutError:
+                if expected:
+                    # self.logger.debug(self.vapi.ppcli("show flow table"))
+                    raise CaptureTimeoutError(
+                          "Packet did not arrive within timeout")
+                else:
+                    return
+            if not expected:
+                raise CaptureTimeoutError("Packet arrived even not expected")
+            self.assertEqual(p[Set].setID, set_id)
+            # self.logger.debug(self.vapi.ppcli("show flow table"))
+            self.logger.debug(ppp("IPFIX: Got packet:", p))
+            break
+        return p
+
+
+@tag_run_solo
+@tag_fixme_vpp_workers
+class Flowprobe(MethodHolder):
+    """Template verification, timer tests"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(Flowprobe, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(Flowprobe, cls).tearDownClass()
+
+    def test_0001(self):
+        """ timer less than template timeout"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, active=2)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream(packets=1)
+        self.send_packets()
+        capture = self.pg2.get_capture(1)
+
+        # make sure the one packet we expect actually showed up
+        cflow = self.wait_for_cflow_packet(self.collector, templates[1], 15)
+        self.verify_cflow_data(ipfix_decoder, capture, cflow)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+    def test_0002(self):
+        """ timer greater than template timeout"""
+        self.logger.info("FFP_TEST_START_0002")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, timeout=3, active=4)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        ipfix.verify_templates()
+
+        self.create_stream(packets=2)
+        self.send_packets()
+        capture = self.pg2.get_capture(2)
+
+        # next set of template packet should arrive after 20 seconds
+        # template packet should arrive within 20 s
+        templates = ipfix.verify_templates(ipfix_decoder, timeout=5)
+
+        # make sure the one packet we expect actually showed up
+        cflow = self.wait_for_cflow_packet(self.collector, templates[1], 15)
+        self.verify_cflow_data(ipfix_decoder, capture, cflow)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0002")
+
+    def test_cflow_packet(self):
+        """verify cflow packet fields"""
+        self.logger.info("FFP_TEST_START_0000")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg8', datapath="ip4",
+                         layer='l2 l3 l4', active=2)
+        ipfix.add_vpp_config()
+
+        route_9001 = VppIpRoute(self, "9.0.0.0", 24,
+                                [VppRoutePath(self.pg8._remote_hosts[0].ip4,
+                                              self.pg8.sw_if_index)])
+        route_9001.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.pkts = [(Ether(dst=self.pg7.local_mac,
+                            src=self.pg7.remote_mac) /
+                      IP(src=self.pg7.remote_ip4, dst="9.0.0.100") /
+                      TCP(sport=1234, dport=4321, flags=80) /
+                      Raw(b'\xa5' * 100))]
+
+        nowUTC = int(time.time())
+        nowUNIX = nowUTC+2208988800
+        self.send_packets(src_if=self.pg7, dst_if=self.pg8)
+
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0], 10)
+        self.collector.get_capture(2)
+
+        if cflow[0].haslayer(IPFIX):
+            self.assertEqual(cflow[IPFIX].version, 10)
+            self.assertEqual(cflow[IPFIX].observationDomainID, 1)
+            self.assertEqual(cflow[IPFIX].sequenceNumber, 0)
+            self.assertAlmostEqual(cflow[IPFIX].exportTime, nowUTC, delta=5)
+        if cflow.haslayer(Data):
+            record = ipfix_decoder.decode_data_set(cflow[0].getlayer(Set))[0]
+            # ingress interface
+            self.assertEqual(int(binascii.hexlify(record[10]), 16), 8)
+            # egress interface
+            self.assertEqual(int(binascii.hexlify(record[14]), 16), 9)
+            # packets
+            self.assertEqual(int(binascii.hexlify(record[2]), 16), 1)
+            # src mac
+            self.assertEqual(mac_ntop(record[56]), self.pg8.local_mac)
+            # dst mac
+            self.assertEqual(mac_ntop(record[80]), self.pg8.remote_mac)
+            flowTimestamp = int(binascii.hexlify(record[156]), 16) >> 32
+            # flow start timestamp
+            self.assertAlmostEqual(flowTimestamp, nowUNIX, delta=1)
+            flowTimestamp = int(binascii.hexlify(record[157]), 16) >> 32
+            # flow end timestamp
+            self.assertAlmostEqual(flowTimestamp, nowUNIX, delta=1)
+            # ethernet type
+            self.assertEqual(int(binascii.hexlify(record[256]), 16), 8)
+            # src ip
+            self.assertEqual(inet_ntop(socket.AF_INET, record[8]),
+                             self.pg7.remote_ip4)
+            # dst ip
+            self.assertEqual(inet_ntop(socket.AF_INET, record[12]),
+                             "9.0.0.100")
+            # protocol (TCP)
+            self.assertEqual(int(binascii.hexlify(record[4]), 16), 6)
+            # src port
+            self.assertEqual(int(binascii.hexlify(record[7]), 16), 1234)
+            # dst port
+            self.assertEqual(int(binascii.hexlify(record[11]), 16), 4321)
+            # tcp flags
+            self.assertEqual(int(binascii.hexlify(record[6]), 16), 80)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0000")
+
+
+@tag_fixme_vpp_workers
+class Datapath(MethodHolder):
+    """collect information on Ethernet, IP4 and IP6 datapath (no timers)"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(Datapath, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(Datapath, cls).tearDownClass()
+
+    def test_templatesL2(self):
+        """ verify template on L2 datapath"""
+        self.logger.info("FFP_TEST_START_0000")
+        self.pg_enable_capture(self.pg_interfaces)
+
+        ipfix = VppCFLOW(test=self, layer='l2')
+        ipfix.add_vpp_config()
+
+        # template packet should arrive immediately
+        self.vapi.ipfix_flush()
+        ipfix.verify_templates(timeout=3, count=1)
+        self.collector.get_capture(1)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0000")
+
+    def test_L2onL2(self):
+        """ L2 data on L2 datapath"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, layer='l2')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(packets=1)
+        capture = self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 256: 8})
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+    def test_L3onL2(self):
+        """ L3 data on L2 datapath"""
+        self.logger.info("FFP_TEST_START_0002")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, layer='l3')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=2)
+
+        self.create_stream(packets=1)
+        capture = self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 4: 17,
+                                       8: 'src_ip', 12: 'dst_ip'})
+
+        self.collector.get_capture(3)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0002")
+
+    def test_L4onL2(self):
+        """ L4 data on L2 datapath"""
+        self.logger.info("FFP_TEST_START_0003")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, layer='l4')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=2)
+
+        self.create_stream(packets=1)
+        capture = self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 7: 'sport', 11: 'dport'})
+
+        self.collector.get_capture(3)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0003")
+
+    def test_templatesIp4(self):
+        """ verify templates on IP4 datapath"""
+        self.logger.info("FFP_TEST_START_0000")
+
+        self.pg_enable_capture(self.pg_interfaces)
+
+        ipfix = VppCFLOW(test=self, datapath='ip4')
+        ipfix.add_vpp_config()
+
+        # template packet should arrive immediately
+        self.vapi.ipfix_flush()
+        ipfix.verify_templates(timeout=3, count=1)
+        self.collector.get_capture(1)
+
+        ipfix.remove_vpp_config()
+
+        self.logger.info("FFP_TEST_FINISH_0000")
+
+    def test_L2onIP4(self):
+        """ L2 data on IP4 datapath"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg4', layer='l2', datapath='ip4')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg3, dst_if=self.pg4, packets=1)
+        capture = self.send_packets(src_if=self.pg3, dst_if=self.pg4)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 256: 8})
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+    def test_L3onIP4(self):
+        """ L3 data on IP4 datapath"""
+        self.logger.info("FFP_TEST_START_0002")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg4', layer='l3', datapath='ip4')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg3, dst_if=self.pg4, packets=1)
+        capture = self.send_packets(src_if=self.pg3, dst_if=self.pg4)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {1: 'octets', 2: 'packets',
+                                       8: 'src_ip', 12: 'dst_ip'})
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0002")
+
+    def test_L4onIP4(self):
+        """ L4 data on IP4 datapath"""
+        self.logger.info("FFP_TEST_START_0003")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg4', layer='l4', datapath='ip4')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg3, dst_if=self.pg4, packets=1)
+        capture = self.send_packets(src_if=self.pg3, dst_if=self.pg4)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 7: 'sport', 11: 'dport'})
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0003")
+
+    def test_templatesIP6(self):
+        """ verify templates on IP6 datapath"""
+        self.logger.info("FFP_TEST_START_0000")
+        self.pg_enable_capture(self.pg_interfaces)
+
+        ipfix = VppCFLOW(test=self, datapath='ip6')
+        ipfix.add_vpp_config()
+
+        # template packet should arrive immediately
+        ipfix.verify_templates(count=1)
+        self.collector.get_capture(1)
+
+        ipfix.remove_vpp_config()
+
+        self.logger.info("FFP_TEST_FINISH_0000")
+
+    def test_L2onIP6(self):
+        """ L2 data on IP6 datapath"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg6', layer='l2', datapath='ip6')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg5, dst_if=self.pg6, packets=1,
+                           ip_ver='IPv6')
+        capture = self.send_packets(src_if=self.pg5, dst_if=self.pg6)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 256: 56710},
+                                      ip_ver='v6')
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+    def test_L3onIP6(self):
+        """ L3 data on IP6 datapath"""
+        self.logger.info("FFP_TEST_START_0002")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg6', layer='l3', datapath='ip6')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg5, dst_if=self.pg6, packets=1,
+                           ip_ver='IPv6')
+        capture = self.send_packets(src_if=self.pg5, dst_if=self.pg6)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets',
+                                       27: 'src_ip', 28: 'dst_ip'},
+                                      ip_ver='v6')
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0002")
+
+    def test_L4onIP6(self):
+        """ L4 data on IP6 datapath"""
+        self.logger.info("FFP_TEST_START_0003")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, intf='pg6', layer='l4', datapath='ip6')
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+        self.create_stream(src_if=self.pg5, dst_if=self.pg6, packets=1,
+                           ip_ver='IPv6')
+        capture = self.send_packets(src_if=self.pg5, dst_if=self.pg6)
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[0])
+        self.verify_cflow_data_detail(ipfix_decoder, capture, cflow,
+                                      {2: 'packets', 7: 'sport', 11: 'dport'},
+                                      ip_ver='v6')
+
+        # expected two templates and one cflow packet
+        self.collector.get_capture(2)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0003")
+
+    def test_0001(self):
+        """ no timers, one CFLOW packet, 9 Flows inside"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream(packets=9)
+        capture = self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        cflow = self.wait_for_cflow_packet(self.collector, templates[1])
+        self.verify_cflow_data_notimer(ipfix_decoder, capture, [cflow])
+        self.collector.get_capture(4)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+    def test_0002(self):
+        """ no timers, two CFLOW packets (mtu=256), 3 Flows in each"""
+        self.logger.info("FFP_TEST_START_0002")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self, mtu=256)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        self.vapi.ipfix_flush()
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream(packets=6)
+        capture = self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        cflows = []
+        self.vapi.ipfix_flush()
+        cflows.append(self.wait_for_cflow_packet(self.collector,
+                                                 templates[1]))
+        cflows.append(self.wait_for_cflow_packet(self.collector,
+                                                 templates[1]))
+        self.verify_cflow_data_notimer(ipfix_decoder, capture, cflows)
+        self.collector.get_capture(5)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0002")
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class DisableIPFIX(MethodHolder):
+    """Disable IPFIX"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(DisableIPFIX, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(DisableIPFIX, cls).tearDownClass()
+
+    def test_0001(self):
+        """ disable IPFIX after first packets"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream()
+        self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1])
+        self.collector.get_capture(4)
+
+        # disable IPFIX
+        ipfix.disable_exporter()
+        self.pg_enable_capture([self.collector])
+
+        self.send_packets()
+
+        # make sure no one packet arrived in 1 minute
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1],
+                                   expected=False)
+        self.collector.get_capture(0)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class ReenableIPFIX(MethodHolder):
+    """Re-enable IPFIX"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(ReenableIPFIX, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(ReenableIPFIX, cls).tearDownClass()
+
+    def test_0011(self):
+        """ disable IPFIX after first packets and re-enable after few packets
+        """
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream(packets=5)
+        self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1])
+        self.collector.get_capture(4)
+
+        # disable IPFIX
+        ipfix.disable_exporter()
+        self.vapi.ipfix_flush()
+        self.pg_enable_capture([self.collector])
+
+        self.send_packets()
+
+        # make sure no one packet arrived in active timer span
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1],
+                                   expected=False)
+        self.collector.get_capture(0)
+        self.pg2.get_capture(5)
+
+        # enable IPFIX
+        ipfix.enable_exporter()
+
+        capture = self.collector.get_capture(4)
+        nr_templates = 0
+        nr_data = 0
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            if p.haslayer(Template):
+                nr_templates += 1
+        self.assertTrue(nr_templates, 3)
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            if p.haslayer(Data):
+                nr_data += 1
+        self.assertTrue(nr_templates, 1)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class DisableFP(MethodHolder):
+    """Disable Flowprobe feature"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(DisableFP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(DisableFP, cls).tearDownClass()
+
+    def test_0001(self):
+        """ disable flowprobe feature after first packets"""
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+        ipfix = VppCFLOW(test=self)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        templates = ipfix.verify_templates(ipfix_decoder)
+
+        self.create_stream()
+        self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1])
+        self.collector.get_capture(4)
+
+        # disable IPFIX
+        ipfix.disable_flowprobe_feature()
+        self.pg_enable_capture([self.collector])
+
+        self.send_packets()
+
+        # make sure no one packet arrived in active timer span
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1],
+                                   expected=False)
+        self.collector.get_capture(0)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class ReenableFP(MethodHolder):
+    """Re-enable Flowprobe feature"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(ReenableFP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(ReenableFP, cls).tearDownClass()
+
+    def test_0001(self):
+        """ disable flowprobe feature after first packets and re-enable
+        after few packets """
+        self.logger.info("FFP_TEST_START_0001")
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pkts = []
+
+        ipfix = VppCFLOW(test=self)
+        ipfix.add_vpp_config()
+
+        ipfix_decoder = IPFIXDecoder()
+        # template packet should arrive immediately
+        self.vapi.ipfix_flush()
+        templates = ipfix.verify_templates(ipfix_decoder, timeout=3)
+
+        self.create_stream()
+        self.send_packets()
+
+        # make sure the one packet we expect actually showed up
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1], 5)
+        self.collector.get_capture(4)
+
+        # disable FPP feature
+        ipfix.disable_flowprobe_feature()
+        self.pg_enable_capture([self.collector])
+
+        self.send_packets()
+
+        # make sure no one packet arrived in active timer span
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1], 5,
+                                   expected=False)
+        self.collector.get_capture(0)
+
+        # enable FPP feature
+        ipfix.enable_flowprobe_feature()
+        self.vapi.ipfix_flush()
+        templates = ipfix.verify_templates(ipfix_decoder, timeout=3)
+
+        self.send_packets()
+
+        # make sure the next packets (templates and data) we expect actually
+        # showed up
+        self.vapi.ipfix_flush()
+        self.wait_for_cflow_packet(self.collector, templates[1], 5)
+        self.collector.get_capture(4)
+
+        ipfix.remove_vpp_config()
+        self.logger.info("FFP_TEST_FINISH_0001")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_gbp.py b/test/test_gbp.py
new file mode 100644
index 0000000..21d0770
--- /dev/null
+++ b/test/test_gbp.py
@@ -0,0 +1,5926 @@
+#!/usr/bin/env python3
+import typing
+from socket import AF_INET6, inet_pton, inet_ntop
+import unittest
+from ipaddress import ip_address, IPv4Network, IPv6Network
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, ARP, Dot1Q
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.layers.inet6 import (
+    IPv6,
+    ICMPv6ND_NS,
+    ICMPv6NDOptSrcLLAddr,
+    ICMPv6ND_NA,
+    ICMPv6EchoRequest,
+)
+from scapy.utils6 import in6_getnsma, in6_getnsmac
+from scapy.layers.vxlan import VXLAN
+from scapy.data import ETH_P_IP, ETH_P_IPV6
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+from vpp_object import VppObject
+from vpp_interface import VppInterface
+from vpp_ip_route import (
+    VppIpRoute,
+    VppRoutePath,
+    VppIpTable,
+    VppIpInterfaceAddress,
+    VppIpInterfaceBind,
+    find_route,
+    FibPathProto,
+    FibPathType,
+)
+from vpp_l2 import (
+    VppBridgeDomain,
+    VppBridgeDomainPort,
+    VppBridgeDomainArpEntry,
+    VppL2FibEntry,
+    find_bridge_domain_port,
+    VppL2Vtr,
+)
+from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
+from vpp_ip import DpoProto, get_dpo_proto
+from vpp_papi import VppEnum, MACAddress
+from vpp_vxlan_gbp_tunnel import find_vxlan_gbp_tunnel, INDEX_INVALID, \
+    VppVxlanGbpTunnel
+from vpp_neighbor import VppNeighbor
+from vpp_acl import AclRule, VppAcl
+
+NUM_PKTS = 67
+
+
+def find_gbp_endpoint(test, sw_if_index=None, ip=None, mac=None,
+                      tep=None, sclass=None, flags=None):
+    if ip:
+        vip = ip
+    if mac:
+        vmac = MACAddress(mac)
+
+    eps = test.vapi.gbp_endpoint_dump()
+
+    for ep in eps:
+        if tep:
+            src = tep[0]
+            dst = tep[1]
+            if src != str(ep.endpoint.tun.src) or \
+               dst != str(ep.endpoint.tun.dst):
+                continue
+        if sw_if_index:
+            if ep.endpoint.sw_if_index != sw_if_index:
+                continue
+        if sclass:
+            if ep.endpoint.sclass != sclass:
+                continue
+        if flags:
+            if flags != (flags & ep.endpoint.flags):
+                continue
+        if ip:
+            for eip in ep.endpoint.ips:
+                if vip == str(eip):
+                    return True
+        if mac:
+            if vmac == ep.endpoint.mac:
+                return True
+
+    return False
+
+
+def find_gbp_vxlan(test: VppTestCase, vni):
+    ts = test.vapi.gbp_vxlan_tunnel_dump()
+    for t in ts:
+        if t.tunnel.vni == vni:
+            return True
+    return False
+
+
+class VppGbpEndpoint(VppObject):
+    """
+    GBP Endpoint
+    """
+
+    @property
+    def mac(self):
+        return str(self.vmac)
+
+    @property
+    def ip4(self):
+        return self._ip4
+
+    @property
+    def fip4(self):
+        return self._fip4
+
+    @property
+    def ip6(self):
+        return self._ip6
+
+    @property
+    def fip6(self):
+        return self._fip6
+
+    @property
+    def ips(self):
+        return [self.ip4, self.ip6]
+
+    @property
+    def fips(self):
+        return [self.fip4, self.fip6]
+
+    def __init__(self, test, itf, epg, recirc, ip4, fip4, ip6, fip6,
+                 flags=0,
+                 tun_src="0.0.0.0",
+                 tun_dst="0.0.0.0",
+                 mac=True):
+        self._test = test
+        self.itf = itf
+        self.handle = None
+        self.epg = epg
+        self.recirc = recirc
+
+        self._ip4 = ip4
+        self._fip4 = fip4
+        self._ip6 = ip6
+        self._fip6 = fip6
+
+        if mac:
+            self.vmac = MACAddress(self.itf.remote_mac)
+        else:
+            self.vmac = MACAddress("00:00:00:00:00:00")
+
+        self.flags = flags
+        self.tun_src = tun_src
+        self.tun_dst = tun_dst
+
+    def encode(self):
+        ips = [self.ip4, self.ip6]
+        return {
+            "sw_if_index": self.itf.sw_if_index,
+            "ips": ips,
+            "n_ips": len(ips),
+            "mac": self.vmac.packed,
+            "sclass": self.epg.sclass,
+            "flags": self.flags,
+            "tun": {
+                "src": self.tun_src,
+                "dst": self.tun_dst,
+            },
+        }
+
+    def add_vpp_config(self):
+        res = self._test.vapi.gbp_endpoint_add(
+            endpoint=self.encode(),
+        )
+        self.handle = res.handle
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_endpoint_del(handle=self.handle)
+
+    def object_id(self):
+        return "gbp-endpoint:[%d==%d:%s:%d]" % (self.handle,
+                                                self.itf.sw_if_index,
+                                                self.ip4,
+                                                self.epg.sclass)
+
+    def query_vpp_config(self):
+        return find_gbp_endpoint(self._test,
+                                 self.itf.sw_if_index,
+                                 self.ip4)
+
+
+class VppGbpRecirc(VppObject):
+    """
+    GBP Recirculation Interface
+    """
+
+    def __init__(self, test, epg, recirc, is_ext=False):
+        self._test = test
+        self.recirc = recirc
+        self.epg = epg
+        self.is_ext = is_ext
+
+    def encode(self):
+        return {
+            "is_ext": self.is_ext,
+            "sw_if_index": self.recirc.sw_if_index,
+            "sclass": self.epg.sclass,
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_recirc_add_del(
+            1,
+            recirc=self.encode(),
+        )
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_recirc_add_del(
+            0,
+            recirc=self.encode(),
+        )
+
+    def object_id(self):
+        return "gbp-recirc:[%d]" % (self.recirc.sw_if_index)
+
+    def query_vpp_config(self):
+        rs = self._test.vapi.gbp_recirc_dump()
+        for r in rs:
+            if r.recirc.sw_if_index == self.recirc.sw_if_index:
+                return True
+        return False
+
+
+class VppGbpExtItf(VppObject):
+    """
+    GBP ExtItfulation Interface
+    """
+
+    def __init__(self, test, itf, bd, rd, anon=False):
+        self._test = test
+        self.itf = itf
+        self.bd = bd
+        self.rd = rd
+        self.flags = 1 if anon else 0
+
+    def encode(self):
+        return {
+            "sw_if_index": self.itf.sw_if_index,
+            "bd_id": self.bd.bd_id,
+            "rd_id": self.rd.rd_id,
+            "flags": self.flags,
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_ext_itf_add_del(
+            1,
+            ext_itf=self.encode(),
+        )
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_ext_itf_add_del(
+            0,
+            ext_itf=self.encode(),
+        )
+
+    def object_id(self):
+        return "gbp-ext-itf:[%d]%s" % (self.itf.sw_if_index,
+                                       " [anon]" if self.flags else "")
+
+    def query_vpp_config(self):
+        rs = self._test.vapi.gbp_ext_itf_dump()
+        for r in rs:
+            if r.ext_itf.sw_if_index == self.itf.sw_if_index:
+                return True
+        return False
+
+
+class VppGbpSubnet(VppObject):
+    """
+    GBP Subnet
+    """
+
+    def __init__(self, test, rd, address, address_len,
+                 type, sw_if_index=0xffffffff, sclass=0xffff):
+        # TODO: replace hardcoded defaults when vpp_papi supports
+        #  defaults in typedefs
+        self._test = test
+        self.rd_id = rd.rd_id
+        a = ip_address(address)
+        if 4 == a.version:
+            self.prefix = IPv4Network("%s/%d" % (address, address_len),
+                                      strict=False)
+        else:
+            self.prefix = IPv6Network("%s/%d" % (address, address_len),
+                                      strict=False)
+        self.type = type
+        self.sw_if_index = sw_if_index
+        self.sclass = sclass
+
+    def encode(self):
+        return {
+            "type": self.type,
+            "sw_if_index": self.sw_if_index,
+            "sclass": self.sclass,
+            "prefix": self.prefix,
+            "rd_id": self.rd_id,
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_subnet_add_del(
+            is_add=1,
+            subnet=self.encode(),
+        )
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_subnet_add_del(
+            is_add=0,
+            subnet=self.encode()
+        )
+
+    def object_id(self):
+        return "gbp-subnet:[%d-%s]" % (self.rd_id, self.prefix)
+
+    def query_vpp_config(self):
+        ss = self._test.vapi.gbp_subnet_dump()
+        for s in ss:
+            if s.subnet.rd_id == self.rd_id and \
+                    s.subnet.type == self.type and \
+                    s.subnet.prefix == self.prefix:
+                return True
+        return False
+
+
+class VppGbpEndpointRetention(object):
+    def __init__(self, remote_ep_timeout=0xffffffff):
+        self.remote_ep_timeout = remote_ep_timeout
+
+    def encode(self):
+        return {'remote_ep_timeout': self.remote_ep_timeout}
+
+
+class VppGbpEndpointGroup(VppObject):
+    """
+    GBP Endpoint Group
+    """
+
+    def __init__(self, test, vnid, sclass, rd, bd, uplink,
+                 bvi, bvi_ip4, bvi_ip6=None,
+                 retention=VppGbpEndpointRetention()):
+        self._test = test
+        self.uplink = uplink
+        self.bvi = bvi
+        self.bvi_ip4 = bvi_ip4
+        self.bvi_ip6 = bvi_ip6
+        self.vnid = vnid
+        self.bd = bd  # VppGbpBridgeDomain
+        self.rd = rd
+        self.sclass = sclass
+        if 0 == self.sclass:
+            self.sclass = 0xffff
+        self.retention = retention
+
+    def encode(self) -> dict:
+        return {
+            "uplink_sw_if_index": self.uplink.sw_if_index
+            if self.uplink else INDEX_INVALID,
+            "bd_id": self.bd.bd.bd_id,
+            "rd_id": self.rd.rd_id,
+            "vnid": self.vnid,
+            "sclass": self.sclass,
+            "retention": self.retention.encode(),
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_endpoint_group_add(epg=self.encode())
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_endpoint_group_del(sclass=self.sclass)
+
+    def object_id(self) -> str:
+        return "gbp-endpoint-group:[%d]" % (self.vnid)
+
+    def query_vpp_config(self) -> bool:
+        epgs = self._test.vapi.gbp_endpoint_group_dump()
+        for epg in epgs:
+            if epg.epg.vnid == self.vnid:
+                return True
+        return False
+
+
+class VppGbpBridgeDomain(VppObject):
+    """
+    GBP Bridge Domain
+    """
+
+    def __init__(self, test, bd, rd, bvi,
+                 uu_fwd: typing.Optional[VppVxlanGbpTunnel] = None,
+                 bm_flood=None, learn=True,
+                 uu_drop=False, bm_drop=False,
+                 ucast_arp=False):
+        self._test = test
+        self.bvi = bvi
+        self.uu_fwd = uu_fwd
+        self.bm_flood = bm_flood
+        self.bd = bd
+        self.rd = rd
+
+        e = VppEnum.vl_api_gbp_bridge_domain_flags_t
+
+        self.flags = e.GBP_BD_API_FLAG_NONE
+        if not learn:
+            self.flags |= e.GBP_BD_API_FLAG_DO_NOT_LEARN
+        if uu_drop:
+            self.flags |= e.GBP_BD_API_FLAG_UU_FWD_DROP
+        if bm_drop:
+            self.flags |= e.GBP_BD_API_FLAG_MCAST_DROP
+        if ucast_arp:
+            self.flags |= e.GBP_BD_API_FLAG_UCAST_ARP
+
+    def encode(self) -> dict:
+        return {
+            "flags": self.flags,
+            "bvi_sw_if_index": self.bvi.sw_if_index,
+            "uu_fwd_sw_if_index": self.uu_fwd.sw_if_index
+            if self.uu_fwd else INDEX_INVALID,
+            "bm_flood_sw_if_index": self.bm_flood.sw_if_index
+            if self.bm_flood else INDEX_INVALID,
+            "bd_id": self.bd.bd_id,
+            "rd_id": self.rd.rd_id,
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_bridge_domain_add(
+            bd=self.encode(),
+        )
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_bridge_domain_del(bd_id=self.bd.bd_id)
+
+    def object_id(self) -> str:
+        return "gbp-bridge-domain:[%d]" % (self.bd.bd_id)
+
+    def query_vpp_config(self) -> bool:
+        bds = self._test.vapi.gbp_bridge_domain_dump()
+        for bd in bds:
+            if bd.bd.bd_id == self.bd.bd_id:
+                return True
+        return False
+
+
+class VppGbpRouteDomain(VppObject):
+    """
+    GBP Route Domain
+    """
+
+    def __init__(self, test, rd_id, scope, t4, t6, ip4_uu=None, ip6_uu=None):
+        self._test = test
+        self.rd_id = rd_id
+        self.scope = scope
+        self.t4 = t4
+        self.t6 = t6
+        self.ip4_uu = ip4_uu
+        self.ip6_uu = ip6_uu
+
+    def encode(self) -> dict:
+        return {
+            "rd_id": self.rd_id,
+            "scope": self.scope,
+            "ip4_table_id": self.t4.table_id,
+            "ip6_table_id": self.t6.table_id,
+            "ip4_uu_sw_if_index": self.ip4_uu.sw_if_index
+            if self.ip4_uu else INDEX_INVALID,
+            "ip6_uu_sw_if_index": self.ip6_uu.sw_if_index
+            if self.ip6_uu else INDEX_INVALID,
+
+        }
+
+    def add_vpp_config(self):
+        self._test.vapi.gbp_route_domain_add(
+            rd=self.encode(),
+        )
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_route_domain_del(rd_id=self.rd_id)
+
+    def object_id(self):
+        return "gbp-route-domain:[%d]" % (self.rd_id)
+
+    def query_vpp_config(self):
+        rds = self._test.vapi.gbp_route_domain_dump()
+        for rd in rds:
+            if rd.rd.rd_id == self.rd_id:
+                return True
+        return False
+
+
+class VppGbpContractNextHop:
+    def __init__(self, mac, bd, ip, rd):
+        self.mac = mac
+        self.ip = ip
+        self.bd = bd
+        self.rd = rd
+
+    def encode(self) -> dict:
+        return {
+            "ip": self.ip,
+            "mac": self.mac.packed,
+            "bd_id": self.bd.bd.bd_id,
+            "rd_id": self.rd.rd_id,
+        }
+
+
+class VppGbpContractRule:
+    def __init__(self, action, hash_mode, nhs=None):
+        self.action = action
+        self.hash_mode = hash_mode
+        self.nhs = [] if nhs is None else nhs
+
+    def encode(self) -> dict:
+        nhs = []
+        for nh in self.nhs:
+            nhs.append(nh.encode())
+        while len(nhs) < 8:
+            nhs.append({})
+        return {'action': self.action,
+                'nh_set': {
+                    'hash_mode': self.hash_mode,
+                    'n_nhs': len(self.nhs),
+                    'nhs': nhs}}
+
+    def __repr__(self):
+        return '<VppGbpContractRule action=%s, hash_mode=%s>' % (
+            self.action, self.hash_mode)
+
+
+class VppGbpContract(VppObject):
+    """
+    GBP Contract
+    """
+
+    def __init__(self, test, scope, sclass, dclass, acl_index,
+                 rules: list, allowed_ethertypes: list):
+        self._test = test
+        self.scope = scope
+        self.acl_index = acl_index
+        self.sclass = sclass
+        self.dclass = dclass
+        self.rules = rules
+        self.allowed_ethertypes = allowed_ethertypes
+        while (len(self.allowed_ethertypes) < 16):
+            self.allowed_ethertypes.append(0)
+
+    def encode(self) -> dict:
+        rules = []
+        for r in self.rules:
+            rules.append(r.encode())
+        return {
+            'acl_index': self.acl_index,
+            'scope': self.scope,
+            'sclass': self.sclass,
+            'dclass': self.dclass,
+            'n_rules': len(rules),
+            'rules': rules,
+            'n_ether_types': len(self.allowed_ethertypes),
+            'allowed_ethertypes': self.allowed_ethertypes,
+        }
+
+    def add_vpp_config(self):
+        r = self._test.vapi.gbp_contract_add_del(
+            is_add=1,
+            contract=self.encode()
+        )
+
+        self.stats_index = r.stats_index
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_contract_add_del(
+            is_add=0,
+            contract=self.encode(),
+        )
+
+    def object_id(self):
+        return "gbp-contract:[%d:%d:%d:%d]" % (self.scope,
+                                               self.sclass,
+                                               self.dclass,
+                                               self.acl_index)
+
+    def query_vpp_config(self):
+        cs = self._test.vapi.gbp_contract_dump()
+        for c in cs:
+            if c.contract.scope == self.scope \
+               and c.contract.sclass == self.sclass \
+               and c.contract.dclass == self.dclass:
+                return True
+        return False
+
+    def get_drop_stats(self):
+        c = self._test.statistics.get_counter("/net/gbp/contract/drop")
+        return c[0][self.stats_index]
+
+    def get_permit_stats(self):
+        c = self._test.statistics.get_counter("/net/gbp/contract/permit")
+        return c[0][self.stats_index]
+
+
+class VppGbpVxlanTunnel(VppInterface):
+    """
+    GBP VXLAN tunnel
+    """
+
+    def __init__(self, test, vni, bd_rd_id, mode, src):
+        super(VppGbpVxlanTunnel, self).__init__(test)
+        self._test = test
+        self.vni = vni
+        self.bd_rd_id = bd_rd_id
+        self.mode = mode
+        self.src = src
+
+    def encode(self) -> dict:
+        return {
+            "vni": self.vni,
+            "mode": self.mode,
+            "bd_rd_id": self.bd_rd_id,
+            "src": self.src,
+        }
+
+    def add_vpp_config(self):
+        r = self._test.vapi.gbp_vxlan_tunnel_add(
+            tunnel=self.encode(),
+        )
+        self.set_sw_if_index(r.sw_if_index)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.gbp_vxlan_tunnel_del(vni=self.vni)
+
+    def object_id(self):
+        return "gbp-vxlan:%d" % (self.sw_if_index)
+
+    def query_vpp_config(self):
+        return find_gbp_vxlan(self._test, self.vni)
+
+
+@tag_fixme_vpp_workers
+class TestGBP(VppTestCase):
+    """ GBP Test Case """
+
+    @property
+    def nat_config_flags(self):
+        return VppEnum.vl_api_nat_config_flags_t
+
+    @property
+    def nat44_config_flags(self):
+        return VppEnum.vl_api_nat44_config_flags_t
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestGBP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestGBP, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestGBP, self).setUp()
+
+        self.create_pg_interfaces(range(9))
+        self.create_loopback_interfaces(8)
+
+        self.router_mac = MACAddress("00:11:22:33:44:55")
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+        for i in self.lo_interfaces:
+            i.admin_up()
+
+        self.vlan_100 = VppDot1QSubint(self, self.pg0, 100)
+        self.vlan_100.admin_up()
+        self.vlan_101 = VppDot1QSubint(self, self.pg0, 101)
+        self.vlan_101.admin_up()
+        self.vlan_102 = VppDot1QSubint(self, self.pg0, 102)
+        self.vlan_102.admin_up()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.admin_down()
+        super(TestGBP, self).tearDown()
+        for i in self.lo_interfaces:
+            i.remove_vpp_config()
+        self.lo_interfaces = []
+        self.vlan_102.remove_vpp_config()
+        self.vlan_101.remove_vpp_config()
+        self.vlan_100.remove_vpp_config()
+
+    def send_and_expect_bridged(self, src, tx, dst):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IP].src, tx[0][IP].src)
+            self.assertEqual(r[IP].dst, tx[0][IP].dst)
+        return rx
+
+    def send_and_expect_bridged6(self, src, tx, dst):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IPv6].src, tx[0][IPv6].src)
+            self.assertEqual(r[IPv6].dst, tx[0][IPv6].dst)
+        return rx
+
+    def send_and_expect_routed(self, src, tx, dst, src_mac):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, src_mac)
+            self.assertEqual(r[Ether].dst, dst.remote_mac)
+            self.assertEqual(r[IP].src, tx[0][IP].src)
+            self.assertEqual(r[IP].dst, tx[0][IP].dst)
+        return rx
+
+    def send_and_expect_routed6(self, src, tx, dst, src_mac):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, src_mac)
+            self.assertEqual(r[Ether].dst, dst.remote_mac)
+            self.assertEqual(r[IPv6].src, tx[0][IPv6].src)
+            self.assertEqual(r[IPv6].dst, tx[0][IPv6].dst)
+        return rx
+
+    def send_and_expect_natted(self, src, tx, dst, src_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IP].src, src_ip)
+            self.assertEqual(r[IP].dst, tx[0][IP].dst)
+        return rx
+
+    def send_and_expect_natted6(self, src, tx, dst, src_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IPv6].src, src_ip)
+            self.assertEqual(r[IPv6].dst, tx[0][IPv6].dst)
+        return rx
+
+    def send_and_expect_unnatted(self, src, tx, dst, dst_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IP].dst, dst_ip)
+            self.assertEqual(r[IP].src, tx[0][IP].src)
+        return rx
+
+    def send_and_expect_unnatted6(self, src, tx, dst, dst_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[IPv6].dst, dst_ip)
+            self.assertEqual(r[IPv6].src, tx[0][IPv6].src)
+        return rx
+
+    def send_and_expect_double_natted(self, src, tx, dst, src_ip, dst_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, str(self.router_mac))
+            self.assertEqual(r[Ether].dst, dst.remote_mac)
+            self.assertEqual(r[IP].dst, dst_ip)
+            self.assertEqual(r[IP].src, src_ip)
+        return rx
+
+    def send_and_expect_double_natted6(self, src, tx, dst, src_ip, dst_ip):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, str(self.router_mac))
+            self.assertEqual(r[Ether].dst, dst.remote_mac)
+            self.assertEqual(r[IPv6].dst, dst_ip)
+            self.assertEqual(r[IPv6].src, src_ip)
+        return rx
+
+    def send_and_expect_no_arp(self, src, tx, dst):
+        self.pg_send(src, tx)
+        dst.get_capture(0, timeout=1)
+        dst.assert_nothing_captured(remark="")
+
+    def send_and_expect_arp(self, src, tx, dst):
+        rx = self.send_and_expect(src, tx, dst)
+
+        for r in rx:
+            self.assertEqual(r[Ether].src, tx[0][Ether].src)
+            self.assertEqual(r[Ether].dst, tx[0][Ether].dst)
+            self.assertEqual(r[ARP].psrc, tx[0][ARP].psrc)
+            self.assertEqual(r[ARP].pdst, tx[0][ARP].pdst)
+            self.assertEqual(r[ARP].hwsrc, tx[0][ARP].hwsrc)
+            self.assertEqual(r[ARP].hwdst, tx[0][ARP].hwdst)
+        return rx
+
+    def test_gbp(self):
+        """ Group Based Policy """
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+
+        #
+        # Route Domains
+        #
+        gt4 = VppIpTable(self, 0)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 0, is_ip6=True)
+        gt6.add_vpp_config()
+        nt4 = VppIpTable(self, 20)
+        nt4.add_vpp_config()
+        nt6 = VppIpTable(self, 20, is_ip6=True)
+        nt6.add_vpp_config()
+
+        rd0 = VppGbpRouteDomain(self, 0, 400, gt4, gt6, None, None)
+        rd20 = VppGbpRouteDomain(self, 20, 420, nt4, nt6, None, None)
+
+        rd0.add_vpp_config()
+        rd20.add_vpp_config()
+
+        #
+        # Bridge Domains
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd2 = VppBridgeDomain(self, 2)
+        bd20 = VppBridgeDomain(self, 20)
+
+        bd1.add_vpp_config()
+        bd2.add_vpp_config()
+        bd20.add_vpp_config()
+
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd0, self.loop0)
+        gbd2 = VppGbpBridgeDomain(self, bd2, rd0, self.loop1)
+        gbd20 = VppGbpBridgeDomain(self, bd20, rd20, self.loop2)
+
+        gbd1.add_vpp_config()
+        gbd2.add_vpp_config()
+        gbd20.add_vpp_config()
+
+        #
+        # 3 EPGs, 2 of which share a BD.
+        # 2 NAT EPGs, one for floating-IP subnets, the other for internet
+        #
+        epgs = [VppGbpEndpointGroup(self, 220, 1220, rd0, gbd1,
+                                    self.pg4, self.loop0,
+                                    "10.0.0.128", "2001:10::128"),
+                VppGbpEndpointGroup(self, 221, 1221, rd0, gbd1,
+                                    self.pg5, self.loop0,
+                                    "10.0.1.128", "2001:10:1::128"),
+                VppGbpEndpointGroup(self, 222, 1222, rd0, gbd2,
+                                    self.pg6, self.loop1,
+                                    "10.0.2.128", "2001:10:2::128"),
+                VppGbpEndpointGroup(self, 333, 1333, rd20, gbd20,
+                                    self.pg7, self.loop2,
+                                    "11.0.0.128", "3001::128"),
+                VppGbpEndpointGroup(self, 444, 1444, rd20, gbd20,
+                                    self.pg8, self.loop2,
+                                    "11.0.0.129", "3001::129")]
+        recircs = [VppGbpRecirc(self, epgs[0], self.loop3),
+                   VppGbpRecirc(self, epgs[1], self.loop4),
+                   VppGbpRecirc(self, epgs[2], self.loop5),
+                   VppGbpRecirc(self, epgs[3], self.loop6, is_ext=True),
+                   VppGbpRecirc(self, epgs[4], self.loop7, is_ext=True)]
+
+        epg_nat = epgs[3]
+        recirc_nat = recircs[3]
+
+        #
+        # 4 end-points, 2 in the same subnet, 3 in the same BD
+        #
+        eps = [VppGbpEndpoint(self, self.pg0,
+                              epgs[0], recircs[0],
+                              "10.0.0.1", "11.0.0.1",
+                              "2001:10::1", "3001::1"),
+               VppGbpEndpoint(self, self.pg1,
+                              epgs[0], recircs[0],
+                              "10.0.0.2", "11.0.0.2",
+                              "2001:10::2", "3001::2"),
+               VppGbpEndpoint(self, self.pg2,
+                              epgs[1], recircs[1],
+                              "10.0.1.1", "11.0.0.3",
+                              "2001:10:1::1", "3001::3"),
+               VppGbpEndpoint(self, self.pg3,
+                              epgs[2], recircs[2],
+                              "10.0.2.1", "11.0.0.4",
+                              "2001:10:2::1", "3001::4")]
+
+        self.vapi.nat44_ed_plugin_enable_disable(enable=1)
+        self.vapi.nat66_plugin_enable_disable(enable=1)
+
+        #
+        # Config related to each of the EPGs
+        #
+        for epg in epgs:
+            # IP config on the BVI interfaces
+            if epg != epgs[1] and epg != epgs[4]:
+                b4 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t4).add_vpp_config()
+                b6 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t6).add_vpp_config()
+                epg.bvi.set_mac(self.router_mac)
+
+                # The BVIs are NAT inside interfaces
+                flags = self.nat_config_flags.NAT_IS_INSIDE
+                self.vapi.nat44_interface_add_del_feature(
+                    sw_if_index=epg.bvi.sw_if_index,
+                    flags=flags, is_add=1)
+                self.vapi.nat66_add_del_interface(
+                    sw_if_index=epg.bvi.sw_if_index,
+                    flags=flags, is_add=1)
+
+            if_ip4 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip4, 32,
+                                           bind=b4).add_vpp_config()
+            if_ip6 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip6, 128,
+                                           bind=b6).add_vpp_config()
+
+            # EPG uplink interfaces in the RD
+            VppIpInterfaceBind(self, epg.uplink, epg.rd.t4).add_vpp_config()
+            VppIpInterfaceBind(self, epg.uplink, epg.rd.t6).add_vpp_config()
+
+            # add the BD ARP termination entry for BVI IP
+            epg.bd_arp_ip4 = VppBridgeDomainArpEntry(self, epg.bd.bd,
+                                                     str(self.router_mac),
+                                                     epg.bvi_ip4)
+            epg.bd_arp_ip6 = VppBridgeDomainArpEntry(self, epg.bd.bd,
+                                                     str(self.router_mac),
+                                                     epg.bvi_ip6)
+            epg.bd_arp_ip4.add_vpp_config()
+            epg.bd_arp_ip6.add_vpp_config()
+
+            # EPG in VPP
+            epg.add_vpp_config()
+
+        for recirc in recircs:
+            # EPG's ingress recirculation interface maps to its RD
+            VppIpInterfaceBind(self, recirc.recirc,
+                               recirc.epg.rd.t4).add_vpp_config()
+            VppIpInterfaceBind(self, recirc.recirc,
+                               recirc.epg.rd.t6).add_vpp_config()
+
+            self.vapi.nat44_interface_add_del_feature(
+                sw_if_index=recirc.recirc.sw_if_index, is_add=1)
+            self.vapi.nat66_add_del_interface(
+                sw_if_index=recirc.recirc.sw_if_index, is_add=1)
+
+            recirc.add_vpp_config()
+
+        for recirc in recircs:
+            self.assertTrue(find_bridge_domain_port(self,
+                                                    recirc.epg.bd.bd.bd_id,
+                                                    recirc.recirc.sw_if_index))
+
+        for ep in eps:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            #
+            # routes to the endpoints. We need these since there are no
+            # adj-fibs due to the fact the the BVI address has /32 and
+            # the subnet is not attached.
+            #
+            for (ip, fip) in zip(ep.ips, ep.fips):
+                # Add static mappings for each EP from the 10/8 to 11/8 network
+                if ip_address(ip).version == 4:
+                    flags = self.nat_config_flags.NAT_IS_ADDR_ONLY
+                    self.vapi.nat44_add_del_static_mapping(
+                        is_add=1,
+                        local_ip_address=ip,
+                        external_ip_address=fip,
+                        external_sw_if_index=0xFFFFFFFF,
+                        vrf_id=0,
+                        flags=flags)
+                else:
+                    self.vapi.nat66_add_del_static_mapping(
+                        local_ip_address=ip,
+                        external_ip_address=fip,
+                        vrf_id=0, is_add=1)
+
+            # VPP EP create ...
+            ep.add_vpp_config()
+
+            self.logger.info(self.vapi.cli("sh gbp endpoint"))
+
+            # ... results in a Gratuitous ARP/ND on the EPG's uplink
+            rx = ep.epg.uplink.get_capture(len(ep.ips), timeout=0.2)
+
+            for ii, ip in enumerate(ep.ips):
+                p = rx[ii]
+
+                if ip_address(ip).version == 6:
+                    self.assertTrue(p.haslayer(ICMPv6ND_NA))
+                    self.assertEqual(p[ICMPv6ND_NA].tgt, ip)
+                else:
+                    self.assertTrue(p.haslayer(ARP))
+                    self.assertEqual(p[ARP].psrc, ip)
+                    self.assertEqual(p[ARP].pdst, ip)
+
+            # add the BD ARP termination entry for floating IP
+            for fip in ep.fips:
+                ba = VppBridgeDomainArpEntry(self, epg_nat.bd.bd, ep.mac,
+                                             fip)
+                ba.add_vpp_config()
+
+                # floating IPs route via EPG recirc
+                r = VppIpRoute(
+                    self, fip, ip_address(fip).max_prefixlen,
+                    [VppRoutePath(fip,
+                                  ep.recirc.recirc.sw_if_index,
+                                  type=FibPathType.FIB_PATH_TYPE_DVR,
+                                  proto=get_dpo_proto(fip))],
+                    table_id=20)
+                r.add_vpp_config()
+
+            # L2 FIB entries in the NAT EPG BD to bridge the packets from
+            # the outside direct to the internal EPG
+            lf = VppL2FibEntry(self, epg_nat.bd.bd, ep.mac,
+                               ep.recirc.recirc, bvi_mac=0)
+            lf.add_vpp_config()
+
+        #
+        # ARP packets for unknown IP are sent to the EPG uplink
+        #
+        pkt_arp = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                         src=self.pg0.remote_mac) /
+                   ARP(op="who-has",
+                       hwdst="ff:ff:ff:ff:ff:ff",
+                       hwsrc=self.pg0.remote_mac,
+                       pdst="10.0.0.88",
+                       psrc="10.0.0.99"))
+
+        self.vapi.cli("clear trace")
+        self.pg0.add_stream(pkt_arp)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rxd = epgs[0].uplink.get_capture(1)
+
+        #
+        # ARP/ND packets get a response
+        #
+        pkt_arp = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                         src=self.pg0.remote_mac) /
+                   ARP(op="who-has",
+                       hwdst="ff:ff:ff:ff:ff:ff",
+                       hwsrc=self.pg0.remote_mac,
+                       pdst=epgs[0].bvi_ip4,
+                       psrc=eps[0].ip4))
+
+        self.send_and_expect(self.pg0, [pkt_arp], self.pg0)
+
+        nsma = in6_getnsma(inet_pton(AF_INET6, eps[0].ip6))
+        d = inet_ntop(AF_INET6, nsma)
+        pkt_nd = (Ether(dst=in6_getnsmac(nsma),
+                        src=self.pg0.remote_mac) /
+                  IPv6(dst=d, src=eps[0].ip6) /
+                  ICMPv6ND_NS(tgt=epgs[0].bvi_ip6) /
+                  ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        self.send_and_expect(self.pg0, [pkt_nd], self.pg0)
+
+        #
+        # broadcast packets are flooded
+        #
+        pkt_bcast = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                           src=self.pg0.remote_mac) /
+                     IP(src=eps[0].ip4, dst="232.1.1.1") /
+                     UDP(sport=1234, dport=1234) /
+                     Raw(b'\xa5' * 100))
+
+        self.vapi.cli("clear trace")
+        self.pg0.add_stream(pkt_bcast)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rxd = eps[1].itf.get_capture(1)
+        self.assertEqual(rxd[0][Ether].dst, pkt_bcast[Ether].dst)
+        rxd = epgs[0].uplink.get_capture(1)
+        self.assertEqual(rxd[0][Ether].dst, pkt_bcast[Ether].dst)
+
+        #
+        # packets to non-local L3 destinations dropped
+        #
+        pkt_intra_epg_220_ip4 = (Ether(src=self.pg0.remote_mac,
+                                       dst=str(self.router_mac)) /
+                                 IP(src=eps[0].ip4,
+                                    dst="10.0.0.99") /
+                                 UDP(sport=1234, dport=1234) /
+                                 Raw(b'\xa5' * 100))
+        pkt_inter_epg_222_ip4 = (Ether(src=self.pg0.remote_mac,
+                                       dst=str(self.router_mac)) /
+                                 IP(src=eps[0].ip4,
+                                    dst="10.0.1.99") /
+                                 UDP(sport=1234, dport=1234) /
+                                 Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(self.pg0,
+                                        pkt_intra_epg_220_ip4 * NUM_PKTS)
+
+        pkt_inter_epg_222_ip6 = (Ether(src=self.pg0.remote_mac,
+                                       dst=str(self.router_mac)) /
+                                 IPv6(src=eps[0].ip6,
+                                      dst="2001:10::99") /
+                                 UDP(sport=1234, dport=1234) /
+                                 Raw(b'\xa5' * 100))
+        self.send_and_assert_no_replies(self.pg0,
+                                        pkt_inter_epg_222_ip6 * NUM_PKTS)
+
+        #
+        # Add the subnet routes
+        #
+        s41 = VppGbpSubnet(
+            self, rd0, "10.0.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s42 = VppGbpSubnet(
+            self, rd0, "10.0.1.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s43 = VppGbpSubnet(
+            self, rd0, "10.0.2.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s61 = VppGbpSubnet(
+            self, rd0, "2001:10::1", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s62 = VppGbpSubnet(
+            self, rd0, "2001:10:1::1", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s63 = VppGbpSubnet(
+            self, rd0, "2001:10:2::1", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_INTERNAL)
+        s41.add_vpp_config()
+        s42.add_vpp_config()
+        s43.add_vpp_config()
+        s61.add_vpp_config()
+        s62.add_vpp_config()
+        s63.add_vpp_config()
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_intra_epg_220_ip4 * NUM_PKTS,
+                                     eps[0].epg.uplink)
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_inter_epg_222_ip4 * NUM_PKTS,
+                                     eps[0].epg.uplink)
+        self.send_and_expect_bridged6(eps[0].itf,
+                                      pkt_inter_epg_222_ip6 * NUM_PKTS,
+                                      eps[0].epg.uplink)
+
+        self.logger.info(self.vapi.cli("sh ip fib 11.0.0.2"))
+        self.logger.info(self.vapi.cli("sh gbp endpoint-group"))
+        self.logger.info(self.vapi.cli("sh gbp endpoint"))
+        self.logger.info(self.vapi.cli("sh gbp recirc"))
+        self.logger.info(self.vapi.cli("sh int"))
+        self.logger.info(self.vapi.cli("sh int addr"))
+        self.logger.info(self.vapi.cli("sh int feat loop6"))
+        self.logger.info(self.vapi.cli("sh vlib graph ip4-gbp-src-classify"))
+        self.logger.info(self.vapi.cli("sh int feat loop3"))
+        self.logger.info(self.vapi.cli("sh int feat pg0"))
+
+        #
+        # Packet destined to unknown unicast is sent on the epg uplink ...
+        #
+        pkt_intra_epg_220_to_uplink = (Ether(src=self.pg0.remote_mac,
+                                             dst="00:00:00:33:44:55") /
+                                       IP(src=eps[0].ip4,
+                                          dst="10.0.0.99") /
+                                       UDP(sport=1234, dport=1234) /
+                                       Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_intra_epg_220_to_uplink * NUM_PKTS,
+                                     eps[0].epg.uplink)
+        # ... and nowhere else
+        self.pg1.get_capture(0, timeout=0.1)
+        self.pg1.assert_nothing_captured(remark="Flood onto other VMS")
+
+        pkt_intra_epg_221_to_uplink = (Ether(src=self.pg2.remote_mac,
+                                             dst="00:00:00:33:44:66") /
+                                       IP(src=eps[0].ip4,
+                                          dst="10.0.0.99") /
+                                       UDP(sport=1234, dport=1234) /
+                                       Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged(eps[2].itf,
+                                     pkt_intra_epg_221_to_uplink * NUM_PKTS,
+                                     eps[2].epg.uplink)
+
+        #
+        # Packets from the uplink are forwarded in the absence of a contract
+        #
+        pkt_intra_epg_220_from_uplink = (Ether(src="00:00:00:33:44:55",
+                                               dst=self.pg0.remote_mac) /
+                                         IP(src=eps[0].ip4,
+                                            dst="10.0.0.99") /
+                                         UDP(sport=1234, dport=1234) /
+                                         Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged(self.pg4,
+                                     pkt_intra_epg_220_from_uplink * NUM_PKTS,
+                                     self.pg0)
+
+        #
+        # in the absence of policy, endpoints in the same EPG
+        # can communicate
+        #
+        pkt_intra_epg = (Ether(src=self.pg0.remote_mac,
+                               dst=self.pg1.remote_mac) /
+                         IP(src=eps[0].ip4,
+                            dst=eps[1].ip4) /
+                         UDP(sport=1234, dport=1234) /
+                         Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged(self.pg0,
+                                     pkt_intra_epg * NUM_PKTS,
+                                     self.pg1)
+
+        #
+        # in the absence of policy, endpoints in the different EPG
+        # cannot communicate
+        #
+        pkt_inter_epg_220_to_221 = (Ether(src=self.pg0.remote_mac,
+                                          dst=self.pg2.remote_mac) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[2].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
+                                          dst=self.pg0.remote_mac) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        pkt_inter_epg_220_to_222 = (Ether(src=self.pg0.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[3].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_221 * NUM_PKTS)
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_222 * NUM_PKTS)
+
+        #
+        # A uni-directional contract from EPG 220 -> 221
+        #
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
+        c1 = VppGbpContract(
+            self, 400, epgs[0].sclass, epgs[1].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_inter_epg_220_to_221 * NUM_PKTS,
+                                     eps[2].itf)
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_222 * NUM_PKTS)
+
+        #
+        # contract for the return direction
+        #
+        c2 = VppGbpContract(
+            self, 400, epgs[1].sclass, epgs[0].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_inter_epg_220_to_221 * NUM_PKTS,
+                                     eps[2].itf)
+        self.send_and_expect_bridged(eps[2].itf,
+                                     pkt_inter_epg_221_to_220 * NUM_PKTS,
+                                     eps[0].itf)
+
+        ds = c2.get_drop_stats()
+        self.assertEqual(ds['packets'], 0)
+        ps = c2.get_permit_stats()
+        self.assertEqual(ps['packets'], NUM_PKTS)
+
+        #
+        # the contract does not allow non-IP
+        #
+        pkt_non_ip_inter_epg_220_to_221 = (Ether(src=self.pg0.remote_mac,
+                                                 dst=self.pg2.remote_mac) /
+                                           ARP())
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_non_ip_inter_epg_220_to_221 * 17)
+
+        #
+        # check that inter group is still disabled for the groups
+        # not in the contract.
+        #
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_222 * NUM_PKTS)
+
+        #
+        # A uni-directional contract from EPG 220 -> 222 'L3 routed'
+        #
+        c3 = VppGbpContract(
+            self, 400, epgs[0].sclass, epgs[2].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh gbp contract"))
+
+        self.send_and_expect_routed(eps[0].itf,
+                                    pkt_inter_epg_220_to_222 * NUM_PKTS,
+                                    eps[3].itf,
+                                    str(self.router_mac))
+        #
+        # remove both contracts, traffic stops in both directions
+        #
+        c2.remove_vpp_config()
+        c1.remove_vpp_config()
+        c3.remove_vpp_config()
+        acl.remove_vpp_config()
+
+        self.send_and_assert_no_replies(eps[2].itf,
+                                        pkt_inter_epg_221_to_220 * NUM_PKTS)
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_221 * NUM_PKTS)
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_intra_epg * NUM_PKTS,
+                                     eps[1].itf)
+
+        #
+        # EPs to the outside world
+        #
+
+        # in the EP's RD an external subnet via the NAT EPG's recirc
+        se1 = VppGbpSubnet(
+            self, rd0, "0.0.0.0", 0,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=recirc_nat.recirc.sw_if_index,
+            sclass=epg_nat.sclass)
+        se2 = VppGbpSubnet(
+            self, rd0, "11.0.0.0", 8,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=recirc_nat.recirc.sw_if_index,
+            sclass=epg_nat.sclass)
+        se16 = VppGbpSubnet(
+            self, rd0, "::", 0,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=recirc_nat.recirc.sw_if_index,
+            sclass=epg_nat.sclass)
+        # in the NAT RD an external subnet via the NAT EPG's uplink
+        se3 = VppGbpSubnet(
+            self, rd20, "0.0.0.0", 0,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=epg_nat.uplink.sw_if_index,
+            sclass=epg_nat.sclass)
+        se36 = VppGbpSubnet(
+            self, rd20, "::", 0,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=epg_nat.uplink.sw_if_index,
+            sclass=epg_nat.sclass)
+        se4 = VppGbpSubnet(
+            self, rd20, "11.0.0.0", 8,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_STITCHED_EXTERNAL,
+            sw_if_index=epg_nat.uplink.sw_if_index,
+            sclass=epg_nat.sclass)
+        se1.add_vpp_config()
+        se2.add_vpp_config()
+        se16.add_vpp_config()
+        se3.add_vpp_config()
+        se36.add_vpp_config()
+        se4.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh ip fib 0.0.0.0/0"))
+        self.logger.info(self.vapi.cli("sh ip fib 11.0.0.1"))
+        self.logger.info(self.vapi.cli("sh ip6 fib ::/0"))
+        self.logger.info(self.vapi.cli("sh ip6 fib %s" %
+                                       eps[0].fip6))
+
+        #
+        # From an EP to an outside address: IN2OUT
+        #
+        pkt_inter_epg_220_to_global = (Ether(src=self.pg0.remote_mac,
+                                             dst=str(self.router_mac)) /
+                                       IP(src=eps[0].ip4,
+                                          dst="1.1.1.1") /
+                                       UDP(sport=1234, dport=1234) /
+                                       Raw(b'\xa5' * 100))
+
+        # no policy yet
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_global * NUM_PKTS)
+        rule = AclRule(is_permit=1, proto=17, ports=1234)
+        rule2 = AclRule(is_permit=1, proto=17, ports=1234,
+                        src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)))
+        acl2 = VppAcl(self, rules=[rule, rule2])
+        acl2.add_vpp_config()
+
+        c4 = VppGbpContract(
+            self, 400, epgs[0].sclass, epgs[3].sclass, acl2.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c4.add_vpp_config()
+
+        self.send_and_expect_natted(eps[0].itf,
+                                    pkt_inter_epg_220_to_global * NUM_PKTS,
+                                    self.pg7,
+                                    eps[0].fip4)
+
+        pkt_inter_epg_220_to_global = (Ether(src=self.pg0.remote_mac,
+                                             dst=str(self.router_mac)) /
+                                       IPv6(src=eps[0].ip6,
+                                            dst="6001::1") /
+                                       UDP(sport=1234, dport=1234) /
+                                       Raw(b'\xa5' * 100))
+
+        self.send_and_expect_natted6(self.pg0,
+                                     pkt_inter_epg_220_to_global * NUM_PKTS,
+                                     self.pg7,
+                                     eps[0].fip6)
+        #
+        # From a global address to an EP: OUT2IN
+        #
+        pkt_inter_epg_220_from_global = (Ether(src=str(self.router_mac),
+                                               dst=self.pg0.remote_mac) /
+                                         IP(dst=eps[0].fip4,
+                                            src="1.1.1.1") /
+                                         UDP(sport=1234, dport=1234) /
+                                         Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(
+            self.pg7, pkt_inter_epg_220_from_global * NUM_PKTS)
+
+        c5 = VppGbpContract(
+            self, 400, epgs[3].sclass, epgs[0].sclass, acl2.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c5.add_vpp_config()
+
+        self.send_and_expect_unnatted(self.pg7,
+                                      pkt_inter_epg_220_from_global * NUM_PKTS,
+                                      eps[0].itf,
+                                      eps[0].ip4)
+
+        pkt_inter_epg_220_from_global = (Ether(src=str(self.router_mac),
+                                               dst=self.pg0.remote_mac) /
+                                         IPv6(dst=eps[0].fip6,
+                                              src="6001::1") /
+                                         UDP(sport=1234, dport=1234) /
+                                         Raw(b'\xa5' * 100))
+
+        self.send_and_expect_unnatted6(
+            self.pg7,
+            pkt_inter_epg_220_from_global * NUM_PKTS,
+            eps[0].itf,
+            eps[0].ip6)
+
+        #
+        # From a local VM to another local VM using resp. public addresses:
+        #  IN2OUT2IN
+        #
+        pkt_intra_epg_220_global = (Ether(src=self.pg0.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[1].fip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_expect_double_natted(eps[0].itf,
+                                           pkt_intra_epg_220_global * NUM_PKTS,
+                                           eps[1].itf,
+                                           eps[0].fip4,
+                                           eps[1].ip4)
+
+        pkt_intra_epg_220_global = (Ether(src=self.pg0.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IPv6(src=eps[0].ip6,
+                                         dst=eps[1].fip6) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_expect_double_natted6(
+            eps[0].itf,
+            pkt_intra_epg_220_global * NUM_PKTS,
+            eps[1].itf,
+            eps[0].fip6,
+            eps[1].ip6)
+
+        #
+        # cleanup
+        #
+        self.vapi.nat44_ed_plugin_enable_disable(enable=0)
+        self.vapi.nat66_plugin_enable_disable(enable=0)
+
+    def wait_for_ep_timeout(self, sw_if_index=None, ip=None, mac=None,
+                            tep=None, n_tries=100, s_time=1):
+        # only learnt EP can timeout
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        flags = ep_flags.GBP_API_ENDPOINT_FLAG_LEARNT
+        while (n_tries):
+            if not find_gbp_endpoint(self, sw_if_index, ip, mac, tep=tep,
+                                     flags=flags):
+                return True
+            n_tries = n_tries - 1
+            self.sleep(s_time)
+        self.assertFalse(find_gbp_endpoint(self, sw_if_index, ip, mac, tep=tep,
+                                           flags=flags))
+        return False
+
+    def test_gbp_learn_l2(self):
+        """ GBP L2 Endpoint Learning """
+
+        drop_no_contract = self.statistics.get_err_counter(
+            '/err/gbp-policy-port/drop-no-contract')
+        allow_intra_class = self.statistics.get_err_counter(
+            '/err/gbp-policy-port/allow-intra-sclass')
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        learnt = [{'mac': '00:00:11:11:11:01',
+                   'ip': '10.0.0.1',
+                   'ip6': '2001:10::2'},
+                  {'mac': '00:00:11:11:11:02',
+                   'ip': '10.0.0.2',
+                   'ip6': '2001:10::3'}]
+
+        #
+        # IP tables
+        #
+        gt4 = VppIpTable(self, 1)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 1, is_ip6=True)
+        gt6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 1, 401, gt4, gt6)
+        rd1.add_vpp_config()
+
+        #
+        # Pg2 hosts the vxlan tunnel, hosts on pg2 to act as TEPs
+        # Pg3 hosts the IP4 UU-flood VXLAN tunnel
+        # Pg4 hosts the IP6 UU-flood VXLAN tunnel
+        #
+        self.pg2.config_ip4()
+        self.pg2.resolve_arp()
+        self.pg2.generate_remote_hosts(4)
+        self.pg2.configure_ipv4_neighbors()
+        self.pg3.config_ip4()
+        self.pg3.resolve_arp()
+        self.pg4.config_ip4()
+        self.pg4.resolve_arp()
+
+        #
+        # Add a mcast destination VXLAN-GBP tunnel for B&M traffic
+        #
+        tun_bm = VppVxlanGbpTunnel(self, self.pg4.local_ip4,
+                                   "239.1.1.1", 88,
+                                   mcast_itf=self.pg4)
+        tun_bm.add_vpp_config()
+
+        #
+        # a GBP bridge domain with a BVI and a UU-flood interface
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0,
+                                  self.pg3, tun_bm)
+        gbd1.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+
+        # ... and has a /32 applied
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
+        ip_addr.add_vpp_config()
+
+        #
+        # The Endpoint-group in which we are learning endpoints
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 112, rd1, gbd1,
+                                      None, self.loop0,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(4))
+        epg_220.add_vpp_config()
+        epg_330 = VppGbpEndpointGroup(self, 330, 113, rd1, gbd1,
+                                      None, self.loop1,
+                                      "10.0.1.128",
+                                      "2001:11::128",
+                                      VppGbpEndpointRetention(4))
+        epg_330.add_vpp_config()
+
+        #
+        # The VXLAN GBP tunnel is a bridge-port and has L2 endpoint
+        # learning enabled
+        #
+        vx_tun_l2_1 = VppGbpVxlanTunnel(
+            self, 99, bd1.bd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L2,
+            self.pg2.local_ip4)
+        vx_tun_l2_1.add_vpp_config()
+
+        #
+        # A static endpoint that the learnt endpoints are trying to
+        # talk to
+        #
+        ep = VppGbpEndpoint(self, self.pg0,
+                            epg_220, None,
+                            "10.0.0.127", "11.0.0.127",
+                            "2001:10::1", "3001::1")
+        ep.add_vpp_config()
+
+        self.assertTrue(find_route(self, ep.ip4, 32, table_id=1))
+
+        # a packet with an sclass from an unknown EPG
+        p = (Ether(src=self.pg2.remote_mac,
+                   dst=self.pg2.local_mac) /
+             IP(src=self.pg2.remote_hosts[0].ip4,
+                dst=self.pg2.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=99, gpid=88, flags=0x88) /
+             Ether(src=learnt[0]["mac"], dst=ep.mac) /
+             IP(src=learnt[0]["ip"], dst=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(self.pg2, p)
+
+        self.logger.info(self.vapi.cli("sh error"))
+        self.assert_error_counter_equal(
+            '/err/gbp-policy-port/drop-no-contract',
+            drop_no_contract + 1)
+
+        #
+        # we should not have learnt a new tunnel endpoint, since
+        # the EPG was not learnt.
+        #
+        self.assertEqual(INDEX_INVALID,
+                         find_vxlan_gbp_tunnel(self,
+                                               self.pg2.local_ip4,
+                                               self.pg2.remote_hosts[0].ip4,
+                                               99))
+
+        # ep is not learnt, because the EPG is unknown
+        self.assertEqual(len(self.vapi.gbp_endpoint_dump()), 1)
+
+        #
+        # Learn new EPs from IP packets
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=112, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[1].ip4,
+                99)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            #
+            # the EP is learnt via the learnt TEP
+            # both from its MAC and its IP
+            #
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              ip=l['ip']))
+
+        self.assert_error_counter_equal(
+            '/err/gbp-policy-port/allow-intra-sclass',
+            allow_intra_class + 2)
+
+        self.logger.info(self.vapi.cli("show gbp endpoint"))
+        self.logger.info(self.vapi.cli("show gbp vxlan"))
+        self.logger.info(self.vapi.cli("show ip mfib"))
+
+        #
+        # If we sleep for the threshold time, the learnt endpoints should
+        # age out
+        #
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+
+        #
+        # Learn new EPs from GARP packets received on the BD's mcast tunnel
+        #
+        for ii, l in enumerate(learnt):
+            # add some junk in the reserved field of the vxlan-header
+            # next to the VNI. we should accept since reserved bits are
+            # ignored on rx.
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst="239.1.1.1") /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=88, reserved2=0x80, gpid=112, flags=0x88) /
+                 Ether(src=l['mac'], dst="ff:ff:ff:ff:ff:ff") /
+                 ARP(op="who-has",
+                     psrc=l['ip'], pdst=l['ip'],
+                     hwsrc=l['mac'], hwdst="ff:ff:ff:ff:ff:ff"))
+
+            rx = self.send_and_expect(self.pg4, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[1].ip4,
+                99)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            #
+            # the EP is learnt via the learnt TEP
+            # both from its MAC and its IP
+            #
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              ip=l['ip']))
+
+        #
+        # wait for the learnt endpoints to age out
+        #
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+
+        #
+        # Learn new EPs from L2 packets
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=112, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[1].ip4,
+                99)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            #
+            # the EP is learnt via the learnt TEP
+            # both from its MAC and its IP
+            #
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+
+        self.logger.info(self.vapi.cli("show gbp endpoint"))
+        self.logger.info(self.vapi.cli("show gbp vxlan"))
+        self.logger.info(self.vapi.cli("show vxlan-gbp tunnel"))
+
+        #
+        # wait for the learnt endpoints to age out
+        #
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+
+        #
+        # repeat. the do not learn bit is set so the EPs are not learnt
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=112, flags=0x88, gpflags="D") /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+        for l in learnt:
+            self.assertFalse(find_gbp_endpoint(self,
+                                               vx_tun_l2_1.sw_if_index,
+                                               mac=l['mac']))
+
+        #
+        # repeat
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            # set a reserved bit in addition to the G and I
+            # reserved bits should not be checked on rx.
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=112, flags=0xc8) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+
+        #
+        # Static EP replies to dynamics
+        #
+        self.logger.info(self.vapi.cli("sh l2fib bd_id 1"))
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=l['mac']) /
+                 IP(dst=l['ip'], src=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * 17, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[1].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 112)
+                self.assertEqual(rx[VXLAN].vni, 99)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+
+        #
+        # repeat in the other EPG
+        # there's no contract between 220 and 330, but the A-bit is set
+        # so the packet is cleared for delivery
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=113, flags=0x88, gpflags='A') /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+
+        #
+        # static EP cannot reach the learnt EPs since there is no contract
+        # only test 1 EP as the others could timeout
+        #
+        p = (Ether(src=ep.mac, dst=l['mac']) /
+             IP(dst=learnt[0]['ip'], src=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(self.pg0, [p])
+
+        #
+        # refresh the entries after the check for no replies above
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=113, flags=0x88, gpflags='A') /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l2_1.sw_if_index,
+                                              mac=l['mac']))
+
+        #
+        # Add the contract so they can talk
+        #
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
+        c1 = VppGbpContract(
+            self, 401, epg_220.sclass, epg_330.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=l['mac']) /
+                 IP(dst=l['ip'], src=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            self.send_and_expect(self.pg0, [p], self.pg2)
+
+        #
+        # send UU packets from the local EP
+        #
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+        self.logger.info(self.vapi.cli("sh bridge-domain 1 detail"))
+        p_uu = (Ether(src=ep.mac, dst="00:11:11:11:11:11") /
+                IP(dst="10.0.0.133", src=ep.ip4) /
+                UDP(sport=1234, dport=1234) /
+                Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(ep.itf, [p_uu], gbd1.uu_fwd)
+
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+
+        p_bm = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
+                IP(dst="10.0.0.133", src=ep.ip4) /
+                UDP(sport=1234, dport=1234) /
+                Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect_only(ep.itf, [p_bm], tun_bm.mcast_itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].src, self.pg4.local_ip4)
+            self.assertEqual(rx[IP].dst, "239.1.1.1")
+            self.assertEqual(rx[UDP].dport, 48879)
+            # the UDP source port is a random value for hashing
+            self.assertEqual(rx[VXLAN].gpid, 112)
+            self.assertEqual(rx[VXLAN].vni, 88)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            self.assertFalse(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
+        c2 = VppGbpContract(
+            self, 401, epg_330.sclass, epg_220.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+        #
+        # Check v6 Endpoints learning
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=113, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(
+                self,
+                vx_tun_l2_1.sw_if_index,
+                ip=l['ip6'],
+                tep=[self.pg2.local_ip4,
+                     self.pg2.remote_hosts[1].ip4]))
+
+        self.logger.info(self.vapi.cli("sh int"))
+        self.logger.info(self.vapi.cli("sh vxlan-gbp tunnel"))
+        self.logger.info(self.vapi.cli("sh gbp vxlan"))
+        self.logger.info(self.vapi.cli("sh gbp endpoint"))
+        self.logger.info(self.vapi.cli("sh gbp interface"))
+
+        #
+        # EP moves to a different TEP
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[2].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=113, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * 1, self.pg0)
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(
+                self,
+                vx_tun_l2_1.sw_if_index,
+                sclass=113,
+                mac=l['mac'],
+                tep=[self.pg2.local_ip4,
+                     self.pg2.remote_hosts[2].ip4]))
+
+        #
+        # v6 remote EP reachability
+        #
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=l['mac']) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[2].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 112)
+                self.assertEqual(rx[VXLAN].vni, 99)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+                self.assertEqual(rx[IPv6].dst, l['ip6'])
+
+        #
+        # EP changes sclass
+        #
+        for l in learnt:
+            # a packet with an sclass from a known EPG
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[2].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=112, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, p * 1, self.pg0)
+            rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+            self.assertTrue(find_gbp_endpoint(
+                self,
+                vx_tun_l2_1.sw_if_index,
+                mac=l['mac'],
+                sclass=112,
+                tep=[self.pg2.local_ip4,
+                     self.pg2.remote_hosts[2].ip4]))
+
+        #
+        # check reachability and contract intra-epg
+        #
+        allow_intra_class = self.statistics.get_err_counter(
+            '/err/gbp-policy-mac/allow-intra-sclass')
+
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=l['mac']) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[2].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                self.assertEqual(rx[VXLAN].gpid, 112)
+                self.assertEqual(rx[VXLAN].vni, 99)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+                self.assertEqual(rx[IPv6].dst, l['ip6'])
+
+            allow_intra_class += NUM_PKTS
+
+        self.assert_error_counter_equal(
+            '/err/gbp-policy-mac/allow-intra-sclass',
+            allow_intra_class)
+
+        #
+        # clean up
+        #
+        for l in learnt:
+            self.wait_for_ep_timeout(vx_tun_l2_1.sw_if_index,
+                                     mac=l['mac'])
+        self.pg2.unconfig_ip4()
+        self.pg3.unconfig_ip4()
+        self.pg4.unconfig_ip4()
+
+    def test_gbp_contract(self):
+        """ GBP Contracts """
+
+        #
+        # Route Domains
+        #
+        gt4 = VppIpTable(self, 0)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 0, is_ip6=True)
+        gt6.add_vpp_config()
+
+        rd0 = VppGbpRouteDomain(self, 0, 400, gt4, gt6, None, None)
+
+        rd0.add_vpp_config()
+
+        #
+        # Bridge Domains
+        #
+        bd1 = VppBridgeDomain(self, 1, arp_term=0)
+        bd2 = VppBridgeDomain(self, 2, arp_term=0)
+
+        bd1.add_vpp_config()
+        bd2.add_vpp_config()
+
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd0, self.loop0)
+        gbd2 = VppGbpBridgeDomain(self, bd2, rd0, self.loop1)
+
+        gbd1.add_vpp_config()
+        gbd2.add_vpp_config()
+
+        #
+        # 3 EPGs, 2 of which share a BD.
+        #
+        epgs = [VppGbpEndpointGroup(self, 220, 1220, rd0, gbd1,
+                                    None, self.loop0,
+                                    "10.0.0.128", "2001:10::128"),
+                VppGbpEndpointGroup(self, 221, 1221, rd0, gbd1,
+                                    None, self.loop0,
+                                    "10.0.1.128", "2001:10:1::128"),
+                VppGbpEndpointGroup(self, 222, 1222, rd0, gbd2,
+                                    None, self.loop1,
+                                    "10.0.2.128", "2001:10:2::128")]
+        #
+        # 4 end-points, 2 in the same subnet, 3 in the same BD
+        #
+        eps = [VppGbpEndpoint(self, self.pg0,
+                              epgs[0], None,
+                              "10.0.0.1", "11.0.0.1",
+                              "2001:10::1", "3001::1"),
+               VppGbpEndpoint(self, self.pg1,
+                              epgs[0], None,
+                              "10.0.0.2", "11.0.0.2",
+                              "2001:10::2", "3001::2"),
+               VppGbpEndpoint(self, self.pg2,
+                              epgs[1], None,
+                              "10.0.1.1", "11.0.0.3",
+                              "2001:10:1::1", "3001::3"),
+               VppGbpEndpoint(self, self.pg3,
+                              epgs[2], None,
+                              "10.0.2.1", "11.0.0.4",
+                              "2001:10:2::1", "3001::4")]
+
+        #
+        # Config related to each of the EPGs
+        #
+        for epg in epgs:
+            # IP config on the BVI interfaces
+            if epg != epgs[1]:
+                b4 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t4).add_vpp_config()
+                b6 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t6).add_vpp_config()
+                epg.bvi.set_mac(self.router_mac)
+
+            if_ip4 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip4, 32,
+                                           bind=b4).add_vpp_config()
+            if_ip6 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip6, 128,
+                                           bind=b6).add_vpp_config()
+
+            # add the BD ARP termination entry for BVI IP
+            epg.bd_arp_ip4 = VppBridgeDomainArpEntry(self, epg.bd.bd,
+                                                     str(self.router_mac),
+                                                     epg.bvi_ip4)
+            epg.bd_arp_ip4.add_vpp_config()
+
+            # EPG in VPP
+            epg.add_vpp_config()
+
+        #
+        # config ep
+        #
+        for ep in eps:
+            ep.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("show gbp endpoint"))
+        self.logger.info(self.vapi.cli("show interface"))
+        self.logger.info(self.vapi.cli("show br"))
+
+        #
+        # Intra epg allowed without contract
+        #
+        pkt_intra_epg_220_to_220 = (Ether(src=self.pg0.remote_mac,
+                                          dst=self.pg1.remote_mac) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[1].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged(self.pg0,
+                                     pkt_intra_epg_220_to_220 * 65,
+                                     self.pg1)
+
+        pkt_intra_epg_220_to_220 = (Ether(src=self.pg0.remote_mac,
+                                          dst=self.pg1.remote_mac) /
+                                    IPv6(src=eps[0].ip6,
+                                         dst=eps[1].ip6) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_expect_bridged6(self.pg0,
+                                      pkt_intra_epg_220_to_220 * 65,
+                                      self.pg1)
+
+        #
+        # Inter epg denied without contract
+        #
+        pkt_inter_epg_220_to_221 = (Ether(src=self.pg0.remote_mac,
+                                          dst=self.pg2.remote_mac) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[2].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(self.pg0, pkt_inter_epg_220_to_221)
+
+        #
+        # A uni-directional contract from EPG 220 -> 221
+        #
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        rule3 = AclRule(is_permit=1, proto=1)
+        acl = VppAcl(self, rules=[rule, rule2, rule3])
+        acl.add_vpp_config()
+
+        c1 = VppGbpContract(
+            self, 400, epgs[0].sclass, epgs[1].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_inter_epg_220_to_221 * 65,
+                                     eps[2].itf)
+
+        pkt_inter_epg_220_to_222 = (Ether(src=self.pg0.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[3].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        self.send_and_assert_no_replies(eps[0].itf,
+                                        pkt_inter_epg_220_to_222 * 65)
+
+        #
+        # ping router IP in different BD
+        #
+        pkt_router_ping_220_to_221 = (Ether(src=self.pg0.remote_mac,
+                                            dst=str(self.router_mac)) /
+                                      IP(src=eps[0].ip4,
+                                         dst=epgs[1].bvi_ip4) /
+                                      ICMP(type='echo-request'))
+
+        self.send_and_expect(self.pg0, [pkt_router_ping_220_to_221], self.pg0)
+
+        pkt_router_ping_220_to_221 = (Ether(src=self.pg0.remote_mac,
+                                            dst=str(self.router_mac)) /
+                                      IPv6(src=eps[0].ip6,
+                                           dst=epgs[1].bvi_ip6) /
+                                      ICMPv6EchoRequest())
+
+        self.send_and_expect(self.pg0, [pkt_router_ping_220_to_221], self.pg0)
+
+        #
+        # contract for the return direction
+        #
+        c2 = VppGbpContract(
+            self, 400, epgs[1].sclass, epgs[0].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        self.send_and_expect_bridged(eps[0].itf,
+                                     pkt_inter_epg_220_to_221 * 65,
+                                     eps[2].itf)
+        pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
+                                          dst=self.pg0.remote_mac) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        self.send_and_expect_bridged(eps[2].itf,
+                                     pkt_inter_epg_221_to_220 * 65,
+                                     eps[0].itf)
+        pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        self.send_and_expect_routed(eps[2].itf,
+                                    pkt_inter_epg_221_to_220 * 65,
+                                    eps[0].itf,
+                                    str(self.router_mac))
+        pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
+                                          dst=str(self.router_mac)) /
+                                    IPv6(src=eps[2].ip6,
+                                         dst=eps[0].ip6) /
+                                    UDP(sport=1234, dport=1234) /
+                                    Raw(b'\xa5' * 100))
+        self.send_and_expect_routed6(eps[2].itf,
+                                     pkt_inter_epg_221_to_220 * 65,
+                                     eps[0].itf,
+                                     str(self.router_mac))
+
+        #
+        # contract between 220 and 222 uni-direction
+        #
+        c3 = VppGbpContract(
+            self, 400, epgs[0].sclass, epgs[2].sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        self.send_and_expect(eps[0].itf,
+                             pkt_inter_epg_220_to_222 * 65,
+                             eps[3].itf)
+
+        c3.remove_vpp_config()
+        c1.remove_vpp_config()
+        c2.remove_vpp_config()
+        acl.remove_vpp_config()
+
+    def test_gbp_bd_drop_flags(self):
+        """ GBP BD drop flags """
+
+        #
+        # IP tables
+        #
+        gt4 = VppIpTable(self, 1)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 1, is_ip6=True)
+        gt6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 1, 401, gt4, gt6)
+        rd1.add_vpp_config()
+
+        #
+        # a GBP bridge domain with a BVI only
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0,
+                                  None, None,
+                                  uu_drop=True, bm_drop=True)
+        gbd1.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+
+        # ... and has a /32 applied
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
+
+        #
+        # The Endpoint-group
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 112, rd1, gbd1,
+                                      None, self.loop0,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(3))
+        epg_220.add_vpp_config()
+
+        ep = VppGbpEndpoint(self, self.pg0,
+                            epg_220, None,
+                            "10.0.0.127", "11.0.0.127",
+                            "2001:10::1", "3001::1")
+        ep.add_vpp_config()
+
+        #
+        # send UU/BM packet from the local EP with UU drop and BM drop enabled
+        # in bd
+        #
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+        p_uu = (Ether(src=ep.mac, dst="00:11:11:11:11:11") /
+                IP(dst="10.0.0.133", src=ep.ip4) /
+                UDP(sport=1234, dport=1234) /
+                Raw(b'\xa5' * 100))
+        self.send_and_assert_no_replies(ep.itf, [p_uu])
+
+        p_bm = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
+                IP(dst="10.0.0.133", src=ep.ip4) /
+                UDP(sport=1234, dport=1234) /
+                Raw(b'\xa5' * 100))
+        self.send_and_assert_no_replies(ep.itf, [p_bm])
+
+        self.pg3.unconfig_ip4()
+
+        self.logger.info(self.vapi.cli("sh int"))
+
+    def test_gbp_bd_arp_flags(self):
+        """ GBP BD arp flags """
+
+        #
+        # IP tables
+        #
+        gt4 = VppIpTable(self, 1)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 1, is_ip6=True)
+        gt6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 1, 401, gt4, gt6)
+        rd1.add_vpp_config()
+
+        #
+        # Pg4 hosts the IP6 UU-flood VXLAN tunnel
+        #
+        self.pg4.config_ip4()
+        self.pg4.resolve_arp()
+
+        #
+        # Add a mcast destination VXLAN-GBP tunnel for B&M traffic
+        #
+        tun_uu = VppVxlanGbpTunnel(self, self.pg4.local_ip4,
+                                   "239.1.1.1", 88,
+                                   mcast_itf=self.pg4)
+        tun_uu.add_vpp_config()
+
+        #
+        # a GBP bridge domain with a BVI and a UU-flood interface
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0,
+                                  tun_uu, None,
+                                  ucast_arp=True)
+        gbd1.add_vpp_config()
+
+        # ... and has a /32 applied
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
+
+        #
+        # The Endpoint-group
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 112, rd1, gbd1,
+                                      None, self.loop0,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(2))
+        epg_220.add_vpp_config()
+
+        ep = VppGbpEndpoint(self, self.pg0,
+                            epg_220, None,
+                            "10.0.0.127", "11.0.0.127",
+                            "2001:10::1", "3001::1")
+        ep.add_vpp_config()
+
+        #
+        # send ARP packet from the local EP expect it on the uu interface
+        #
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+        p_arp = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
+                 ARP(op="who-has",
+                     psrc=ep.ip4, pdst="10.0.0.99",
+                     hwsrc=ep.mac,
+                     hwdst="ff:ff:ff:ff:ff:ff"))
+        self.send_and_expect(ep.itf, [p_arp], self.pg4)
+
+        self.pg4.unconfig_ip4()
+
+    def test_gbp_learn_vlan_l2(self):
+        """ GBP L2 Endpoint w/ VLANs"""
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        learnt = [{'mac': '00:00:11:11:11:01',
+                   'ip': '10.0.0.1',
+                   'ip6': '2001:10::2'},
+                  {'mac': '00:00:11:11:11:02',
+                   'ip': '10.0.0.2',
+                   'ip6': '2001:10::3'}]
+
+        #
+        # IP tables
+        #
+        gt4 = VppIpTable(self, 1)
+        gt4.add_vpp_config()
+        gt6 = VppIpTable(self, 1, is_ip6=True)
+        gt6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 1, 401, gt4, gt6)
+        rd1.add_vpp_config()
+
+        #
+        # Pg2 hosts the vxlan tunnel, hosts on pg2 to act as TEPs
+        #
+        self.pg2.config_ip4()
+        self.pg2.resolve_arp()
+        self.pg2.generate_remote_hosts(4)
+        self.pg2.configure_ipv4_neighbors()
+        self.pg3.config_ip4()
+        self.pg3.resolve_arp()
+
+        #
+        # The EP will be on a vlan sub-interface
+        #
+        vlan_11 = VppDot1QSubint(self, self.pg0, 11)
+        vlan_11.admin_up()
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=vlan_11.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=11)
+
+        bd_uu_fwd = VppVxlanGbpTunnel(self, self.pg3.local_ip4,
+                                      self.pg3.remote_ip4, 116)
+        bd_uu_fwd.add_vpp_config()
+
+        #
+        # a GBP bridge domain with a BVI and a UU-flood interface
+        # The BD is marked as do not learn, so no endpoints are ever
+        # learnt in this BD.
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0, bd_uu_fwd,
+                                  learn=False)
+        gbd1.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+
+        # ... and has a /32 applied
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
+
+        #
+        # The Endpoint-group in which we are learning endpoints
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 441, rd1, gbd1,
+                                      None, self.loop0,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(4))
+        epg_220.add_vpp_config()
+
+        #
+        # The VXLAN GBP tunnel is a bridge-port and has L2 endpoint
+        # learning enabled
+        #
+        vx_tun_l2_1 = VppGbpVxlanTunnel(
+            self, 99, bd1.bd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L2,
+            self.pg2.local_ip4)
+        vx_tun_l2_1.add_vpp_config()
+
+        #
+        # A static endpoint that the learnt endpoints are trying to
+        # talk to
+        #
+        ep = VppGbpEndpoint(self, vlan_11,
+                            epg_220, None,
+                            "10.0.0.127", "11.0.0.127",
+                            "2001:10::1", "3001::1")
+        ep.add_vpp_config()
+
+        self.assertTrue(find_route(self, ep.ip4, 32, table_id=1))
+
+        #
+        # Send to the static EP
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=99, gpid=441, flags=0x88) /
+                 Ether(src=l['mac'], dst=ep.mac) /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            #
+            # packet to EP has the EP's vlan tag
+            #
+            for rx in rxs:
+                self.assertEqual(rx[Dot1Q].vlan, 11)
+
+            #
+            # the EP is not learnt since the BD setting prevents it
+            # also no TEP too
+            #
+            self.assertFalse(find_gbp_endpoint(self,
+                                               vx_tun_l2_1.sw_if_index,
+                                               mac=l['mac']))
+            self.assertEqual(INDEX_INVALID,
+                             find_vxlan_gbp_tunnel(
+                                 self,
+                                 self.pg2.local_ip4,
+                                 self.pg2.remote_hosts[1].ip4,
+                                 99))
+
+        self.assertEqual(len(self.vapi.gbp_endpoint_dump()), 1)
+
+        #
+        # static to remotes
+        # we didn't learn the remotes so they are sent to the UU-fwd
+        #
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=l['mac']) /
+                 Dot1Q(vlan=11) /
+                 IP(dst=l['ip'], src=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * 17, self.pg3)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg3.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg3.remote_ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 441)
+                self.assertEqual(rx[VXLAN].vni, 116)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertFalse(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+
+        self.pg2.unconfig_ip4()
+        self.pg3.unconfig_ip4()
+
+    def test_gbp_learn_l3(self):
+        """ GBP L3 Endpoint Learning """
+
+        self.vapi.cli("set logging class gbp level debug")
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        routed_dst_mac = "00:0c:0c:0c:0c:0c"
+        routed_src_mac = "00:22:bd:f8:19:ff"
+
+        learnt = [{'mac': '00:00:11:11:11:02',
+                   'ip': '10.0.1.2',
+                   'ip6': '2001:10::2'},
+                  {'mac': '00:00:11:11:11:03',
+                   'ip': '10.0.1.3',
+                   'ip6': '2001:10::3'}]
+
+        #
+        # IP tables
+        #
+        t4 = VppIpTable(self, 1)
+        t4.add_vpp_config()
+        t6 = VppIpTable(self, 1, True)
+        t6.add_vpp_config()
+
+        tun_ip4_uu = VppVxlanGbpTunnel(self, self.pg4.local_ip4,
+                                       self.pg4.remote_ip4, 114)
+        tun_ip6_uu = VppVxlanGbpTunnel(self, self.pg4.local_ip4,
+                                       self.pg4.remote_ip4, 116)
+        tun_ip4_uu.add_vpp_config()
+        tun_ip6_uu.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 2, 401, t4, t6, tun_ip4_uu, tun_ip6_uu)
+        rd1.add_vpp_config()
+
+        self.loop0.set_mac(self.router_mac)
+
+        #
+        # Bind the BVI to the RD
+        #
+        b4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+
+        #
+        # Pg2 hosts the vxlan tunnel
+        # hosts on pg2 to act as TEPs
+        # pg3 is BD uu-fwd
+        # pg4 is RD uu-fwd
+        #
+        self.pg2.config_ip4()
+        self.pg2.resolve_arp()
+        self.pg2.generate_remote_hosts(4)
+        self.pg2.configure_ipv4_neighbors()
+        self.pg3.config_ip4()
+        self.pg3.resolve_arp()
+        self.pg4.config_ip4()
+        self.pg4.resolve_arp()
+
+        #
+        # a GBP bridge domain with a BVI and a UU-flood interface
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0, self.pg3)
+        gbd1.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh bridge 1 detail"))
+        self.logger.info(self.vapi.cli("sh gbp bridge"))
+        self.logger.info(self.vapi.cli("sh gbp route"))
+
+        # ... and has a /32 and /128 applied
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 32,
+                                         bind=b4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "2001:10::128", 128,
+                                         bind=b6).add_vpp_config()
+
+        #
+        # The Endpoint-group in which we are learning endpoints
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 441, rd1, gbd1,
+                                      None, self.loop0,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(4))
+        epg_220.add_vpp_config()
+
+        #
+        # The VXLAN GBP tunnel is in L3 mode with learning enabled
+        #
+        vx_tun_l3 = VppGbpVxlanTunnel(
+            self, 101, rd1.rd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L3,
+            self.pg2.local_ip4)
+        vx_tun_l3.add_vpp_config()
+
+        #
+        # A static endpoint that the learnt endpoints are trying to
+        # talk to
+        #
+        ep = VppGbpEndpoint(self, self.pg0,
+                            epg_220, None,
+                            "10.0.0.127", "11.0.0.127",
+                            "2001:10::1", "3001::1")
+        ep.add_vpp_config()
+
+        #
+        # learn some remote IPv4 EPs
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=101, gpid=441, flags=0x88) /
+                 Ether(src=l['mac'], dst="00:00:00:11:11:11") /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[1].ip4,
+                vx_tun_l3.vni)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            # endpoint learnt via the parent GBP-vxlan interface
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l3._sw_if_index,
+                                              ip=l['ip']))
+
+        #
+        # Static IPv4 EP replies to learnt
+        #
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+                 IP(dst=l['ip'], src=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * 1, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[1].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 441)
+                self.assertEqual(rx[VXLAN].vni, 101)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+
+                inner = rx[VXLAN].payload
+
+                self.assertEqual(inner[Ether].src, routed_src_mac)
+                self.assertEqual(inner[Ether].dst, routed_dst_mac)
+                self.assertEqual(inner[IP].src, ep.ip4)
+                self.assertEqual(inner[IP].dst, l['ip'])
+
+        for l in learnt:
+            self.assertFalse(find_gbp_endpoint(self,
+                                               tep1_sw_if_index,
+                                               ip=l['ip']))
+
+        #
+        # learn some remote IPv6 EPs
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[1].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=101, gpid=441, flags=0x88) /
+                 Ether(src=l['mac'], dst="00:00:00:11:11:11") /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[1].ip4,
+                vx_tun_l3.vni)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            self.logger.info(self.vapi.cli("show gbp bridge"))
+            self.logger.info(self.vapi.cli("show vxlan-gbp tunnel"))
+            self.logger.info(self.vapi.cli("show gbp vxlan"))
+            self.logger.info(self.vapi.cli("show int addr"))
+
+            # endpoint learnt via the TEP
+            self.assertTrue(find_gbp_endpoint(self, ip=l['ip6']))
+
+        self.logger.info(self.vapi.cli("show gbp endpoint"))
+        self.logger.info(self.vapi.cli("show ip fib index 1 %s" % l['ip']))
+
+        #
+        # Static EP replies to learnt
+        #
+        for l in learnt:
+            p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[1].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 441)
+                self.assertEqual(rx[VXLAN].vni, 101)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+
+                inner = rx[VXLAN].payload
+
+                self.assertEqual(inner[Ether].src, routed_src_mac)
+                self.assertEqual(inner[Ether].dst, routed_dst_mac)
+                self.assertEqual(inner[IPv6].src, ep.ip6)
+                self.assertEqual(inner[IPv6].dst, l['ip6'])
+
+        self.logger.info(self.vapi.cli("sh gbp endpoint"))
+        for l in learnt:
+            self.wait_for_ep_timeout(ip=l['ip'])
+
+        #
+        # Static sends to unknown EP with no route
+        #
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(dst="10.0.0.99", src=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        self.send_and_assert_no_replies(self.pg0, [p])
+
+        #
+        # Add a route to static EP's v4 and v6 subnet
+        #
+        se_10_24 = VppGbpSubnet(
+            self, rd1, "10.0.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_TRANSPORT)
+        se_10_24.add_vpp_config()
+
+        #
+        # static pings router
+        #
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(dst=epg_220.bvi_ip4, src=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
+
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IPv6(dst=epg_220.bvi_ip6, src=ep.ip6) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
+
+        #
+        # packets to address in the subnet are sent on the uu-fwd
+        #
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(dst="10.0.0.99", src=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, [p], self.pg4)
+        for rx in rxs:
+            self.assertEqual(rx[IP].src, self.pg4.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg4.remote_ip4)
+            self.assertEqual(rx[UDP].dport, 48879)
+            # the UDP source port is a random value for hashing
+            self.assertEqual(rx[VXLAN].gpid, 441)
+            self.assertEqual(rx[VXLAN].vni, 114)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # policy is not applied to packets sent to the uu-fwd interfaces
+            self.assertFalse(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+        #
+        # learn some remote IPv4 EPs
+        #
+        for ii, l in enumerate(learnt):
+            # a packet with an sclass from a known EPG
+            # arriving on an unknown TEP
+            p = (Ether(src=self.pg2.remote_mac,
+                       dst=self.pg2.local_mac) /
+                 IP(src=self.pg2.remote_hosts[2].ip4,
+                    dst=self.pg2.local_ip4) /
+                 UDP(sport=1234, dport=48879) /
+                 VXLAN(vni=101, gpid=441, flags=0x88) /
+                 Ether(src=l['mac'], dst="00:00:00:11:11:11") /
+                 IP(src=l['ip'], dst=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+            # the new TEP
+            tep1_sw_if_index = find_vxlan_gbp_tunnel(
+                self,
+                self.pg2.local_ip4,
+                self.pg2.remote_hosts[2].ip4,
+                vx_tun_l3.vni)
+            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)
+
+            # endpoint learnt via the parent GBP-vxlan interface
+            self.assertTrue(find_gbp_endpoint(self,
+                                              vx_tun_l3._sw_if_index,
+                                              ip=l['ip']))
+
+        #
+        # Add a remote endpoint from the API
+        #
+        rep_88 = VppGbpEndpoint(self, vx_tun_l3,
+                                epg_220, None,
+                                "10.0.0.88", "11.0.0.88",
+                                "2001:10::88", "3001::88",
+                                ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                                self.pg2.local_ip4,
+                                self.pg2.remote_hosts[2].ip4,
+                                mac=None)
+        rep_88.add_vpp_config()
+
+        #
+        # Add a remote endpoint from the API that matches an existing one
+        # this is a lower priority, hence the packet is sent to the DP leanrt
+        # TEP
+        #
+        rep_2 = VppGbpEndpoint(self, vx_tun_l3,
+                               epg_220, None,
+                               learnt[0]['ip'], "11.0.0.101",
+                               learnt[0]['ip6'], "3001::101",
+                               ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                               self.pg2.local_ip4,
+                               self.pg2.remote_hosts[1].ip4,
+                               mac=None)
+        rep_2.add_vpp_config()
+
+        #
+        # Add a route to the learned EP's v4 subnet
+        #  packets should be send on the v4/v6 uu=fwd interface resp.
+        #
+        se_10_1_24 = VppGbpSubnet(
+            self, rd1, "10.0.1.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_TRANSPORT)
+        se_10_1_24.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("show gbp endpoint"))
+
+        ips = ["10.0.0.88", learnt[0]['ip']]
+        for ip in ips:
+            p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+                 IP(dst=ip, src=ep.ip4) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(b'\xa5' * 100))
+
+            rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+            for rx in rxs:
+                self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+                self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[2].ip4)
+                self.assertEqual(rx[UDP].dport, 48879)
+                # the UDP source port is a random value for hashing
+                self.assertEqual(rx[VXLAN].gpid, 441)
+                self.assertEqual(rx[VXLAN].vni, 101)
+                self.assertTrue(rx[VXLAN].flags.G)
+                self.assertTrue(rx[VXLAN].flags.Instance)
+                self.assertTrue(rx[VXLAN].gpflags.A)
+                self.assertFalse(rx[VXLAN].gpflags.D)
+
+                inner = rx[VXLAN].payload
+
+                self.assertEqual(inner[Ether].src, routed_src_mac)
+                self.assertEqual(inner[Ether].dst, routed_dst_mac)
+                self.assertEqual(inner[IP].src, ep.ip4)
+                self.assertEqual(inner[IP].dst, ip)
+
+        #
+        # remove the API remote EPs, only API sourced is gone, the DP
+        # learnt one remains
+        #
+        rep_88.remove_vpp_config()
+        rep_2.remove_vpp_config()
+
+        self.assertTrue(find_gbp_endpoint(self, ip=rep_2.ip4))
+
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(src=ep.ip4, dst=rep_2.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(self.pg0, [p], self.pg2)
+
+        self.assertFalse(find_gbp_endpoint(self, ip=rep_88.ip4))
+
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(src=ep.ip4, dst=rep_88.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(self.pg0, [p], self.pg4)
+
+        #
+        # to appease the testcase we cannot have the registered EP still
+        # present (because it's DP learnt) when the TC ends so wait until
+        # it is removed
+        #
+        self.wait_for_ep_timeout(ip=rep_88.ip4)
+        self.wait_for_ep_timeout(ip=rep_2.ip4)
+
+        #
+        # Same as above, learn a remote EP via CP and DP
+        # this time remove the DP one first. expect the CP data to remain
+        #
+        rep_3 = VppGbpEndpoint(self, vx_tun_l3,
+                               epg_220, None,
+                               "10.0.1.4", "11.0.0.103",
+                               "2001::10:3", "3001::103",
+                               ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                               self.pg2.local_ip4,
+                               self.pg2.remote_hosts[1].ip4,
+                               mac=None)
+        rep_3.add_vpp_config()
+
+        p = (Ether(src=self.pg2.remote_mac,
+                   dst=self.pg2.local_mac) /
+             IP(src=self.pg2.remote_hosts[2].ip4,
+                dst=self.pg2.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=101, gpid=441, flags=0x88) /
+             Ether(src=l['mac'], dst="00:00:00:11:11:11") /
+             IP(src="10.0.1.4", dst=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
+
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip=rep_3.ip4,
+                                          tep=[self.pg2.local_ip4,
+                                               self.pg2.remote_hosts[2].ip4]))
+
+        p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
+             IP(dst="10.0.1.4", src=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+        # host 2 is the DP learned TEP
+        for rx in rxs:
+            self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[2].ip4)
+
+        self.wait_for_ep_timeout(ip=rep_3.ip4,
+                                 tep=[self.pg2.local_ip4,
+                                      self.pg2.remote_hosts[2].ip4])
+
+        rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
+
+        # host 1 is the CP learned TEP
+        for rx in rxs:
+            self.assertEqual(rx[IP].src, self.pg2.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[1].ip4)
+
+        #
+        # shutdown with learnt endpoint present
+        #
+        p = (Ether(src=self.pg2.remote_mac,
+                   dst=self.pg2.local_mac) /
+             IP(src=self.pg2.remote_hosts[1].ip4,
+                dst=self.pg2.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=101, gpid=441, flags=0x88) /
+             Ether(src=l['mac'], dst="00:00:00:11:11:11") /
+             IP(src=learnt[1]['ip'], dst=ep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rx = self.send_and_expect(self.pg2, [p], self.pg0)
+
+        # endpoint learnt via the parent GBP-vxlan interface
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip=l['ip']))
+
+        #
+        # TODO
+        # remote endpoint becomes local
+        #
+        self.pg2.unconfig_ip4()
+        self.pg3.unconfig_ip4()
+        self.pg4.unconfig_ip4()
+
+    def test_gbp_redirect(self):
+        """ GBP Endpoint Redirect """
+
+        self.vapi.cli("set logging class gbp level debug")
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        routed_dst_mac = "00:0c:0c:0c:0c:0c"
+        routed_src_mac = "00:22:bd:f8:19:ff"
+
+        learnt = [{'mac': '00:00:11:11:11:02',
+                   'ip': '10.0.1.2',
+                   'ip6': '2001:10::2'},
+                  {'mac': '00:00:11:11:11:03',
+                   'ip': '10.0.1.3',
+                   'ip6': '2001:10::3'}]
+
+        #
+        # IP tables
+        #
+        t4 = VppIpTable(self, 1)
+        t4.add_vpp_config()
+        t6 = VppIpTable(self, 1, True)
+        t6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 2, 402, t4, t6)
+        rd1.add_vpp_config()
+
+        self.loop0.set_mac(self.router_mac)
+
+        #
+        # Bind the BVI to the RD
+        #
+        b_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+
+        #
+        # Pg7 hosts a BD's UU-fwd
+        #
+        self.pg7.config_ip4()
+        self.pg7.resolve_arp()
+
+        #
+        # a GBP bridge domains for the EPs
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0)
+        gbd1.add_vpp_config()
+
+        bd2 = VppBridgeDomain(self, 2)
+        bd2.add_vpp_config()
+        gbd2 = VppGbpBridgeDomain(self, bd2, rd1, self.loop1)
+        gbd2.add_vpp_config()
+
+        # ... and has a /32 and /128 applied
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 32,
+                                         bind=b_ip4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "2001:10::128", 128,
+                                         bind=b_ip6).add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd2.bvi,
+                                         "10.0.1.128", 32).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd2.bvi,
+                                         "2001:11::128", 128).add_vpp_config()
+
+        #
+        # The Endpoint-groups in which we are learning endpoints
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 440, rd1, gbd1,
+                                      None, gbd1.bvi,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(60))
+        epg_220.add_vpp_config()
+        epg_221 = VppGbpEndpointGroup(self, 221, 441, rd1, gbd2,
+                                      None, gbd2.bvi,
+                                      "10.0.1.128",
+                                      "2001:11::128",
+                                      VppGbpEndpointRetention(60))
+        epg_221.add_vpp_config()
+        epg_222 = VppGbpEndpointGroup(self, 222, 442, rd1, gbd1,
+                                      None, gbd1.bvi,
+                                      "10.0.2.128",
+                                      "2001:12::128",
+                                      VppGbpEndpointRetention(60))
+        epg_222.add_vpp_config()
+
+        #
+        # a GBP bridge domains for the SEPs
+        #
+        bd_uu1 = VppVxlanGbpTunnel(self, self.pg7.local_ip4,
+                                   self.pg7.remote_ip4, 116)
+        bd_uu1.add_vpp_config()
+        bd_uu2 = VppVxlanGbpTunnel(self, self.pg7.local_ip4,
+                                   self.pg7.remote_ip4, 117)
+        bd_uu2.add_vpp_config()
+
+        bd3 = VppBridgeDomain(self, 3)
+        bd3.add_vpp_config()
+        gbd3 = VppGbpBridgeDomain(self, bd3, rd1, self.loop2,
+                                  bd_uu1, learn=False)
+        gbd3.add_vpp_config()
+        bd4 = VppBridgeDomain(self, 4)
+        bd4.add_vpp_config()
+        gbd4 = VppGbpBridgeDomain(self, bd4, rd1, self.loop3,
+                                  bd_uu2, learn=False)
+        gbd4.add_vpp_config()
+
+        #
+        # EPGs in which the service endpoints exist
+        #
+        epg_320 = VppGbpEndpointGroup(self, 320, 550, rd1, gbd3,
+                                      None, gbd1.bvi,
+                                      "12.0.0.128",
+                                      "4001:10::128",
+                                      VppGbpEndpointRetention(60))
+        epg_320.add_vpp_config()
+        epg_321 = VppGbpEndpointGroup(self, 321, 551, rd1, gbd4,
+                                      None, gbd2.bvi,
+                                      "12.0.1.128",
+                                      "4001:11::128",
+                                      VppGbpEndpointRetention(60))
+        epg_321.add_vpp_config()
+
+        #
+        # three local endpoints
+        #
+        ep1 = VppGbpEndpoint(self, self.pg0,
+                             epg_220, None,
+                             "10.0.0.1", "11.0.0.1",
+                             "2001:10::1", "3001:10::1")
+        ep1.add_vpp_config()
+        ep2 = VppGbpEndpoint(self, self.pg1,
+                             epg_221, None,
+                             "10.0.1.1", "11.0.1.1",
+                             "2001:11::1", "3001:11::1")
+        ep2.add_vpp_config()
+        ep3 = VppGbpEndpoint(self, self.pg2,
+                             epg_222, None,
+                             "10.0.2.2", "11.0.2.2",
+                             "2001:12::1", "3001:12::1")
+        ep3.add_vpp_config()
+
+        #
+        # service endpoints
+        #
+        sep1 = VppGbpEndpoint(self, self.pg3,
+                              epg_320, None,
+                              "12.0.0.1", "13.0.0.1",
+                              "4001:10::1", "5001:10::1")
+        sep1.add_vpp_config()
+        sep2 = VppGbpEndpoint(self, self.pg4,
+                              epg_320, None,
+                              "12.0.0.2", "13.0.0.2",
+                              "4001:10::2", "5001:10::2")
+        sep2.add_vpp_config()
+        sep3 = VppGbpEndpoint(self, self.pg5,
+                              epg_321, None,
+                              "12.0.1.1", "13.0.1.1",
+                              "4001:11::1", "5001:11::1")
+        sep3.add_vpp_config()
+        # this EP is not installed immediately
+        sep4 = VppGbpEndpoint(self, self.pg6,
+                              epg_321, None,
+                              "12.0.1.2", "13.0.1.2",
+                              "4001:11::2", "5001:11::2")
+
+        #
+        # an L2 switch packet between local EPs in different EPGs
+        #  different dest ports on each so the are LB hashed differently
+        #
+        p4 = [(Ether(src=ep1.mac, dst=ep3.mac) /
+               IP(src=ep1.ip4, dst=ep3.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep3.mac, dst=ep1.mac) /
+               IP(src=ep3.ip4, dst=ep1.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+        p6 = [(Ether(src=ep1.mac, dst=ep3.mac) /
+               IPv6(src=ep1.ip6, dst=ep3.ip6) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep3.mac, dst=ep1.mac) /
+               IPv6(src=ep3.ip6, dst=ep1.ip6) /
+               UDP(sport=1234, dport=1230) /
+               Raw(b'\xa5' * 100))]
+
+        # should be dropped since no contract yet
+        self.send_and_assert_no_replies(self.pg0, [p4[0]])
+        self.send_and_assert_no_replies(self.pg0, [p6[0]])
+
+        #
+        # Add a contract with a rule to load-balance redirect via SEP1 and SEP2
+        # one of the next-hops is via an EP that is not known
+        #
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
+
+        #
+        # test the src-ip hash mode
+        #
+        c1 = VppGbpContract(
+            self, 402, epg_220.sclass, epg_222.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        c2 = VppGbpContract(
+            self, 402, epg_222.sclass, epg_220.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        #
+        # send again with the contract preset, now packets arrive
+        # at SEP1 or SEP2 depending on the hashing
+        #
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep3.ip4)
+
+        rxs = self.send_and_expect(self.pg2, p4[1] * 17, sep2.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep2.mac)
+            self.assertEqual(rx[IP].src, ep3.ip4)
+            self.assertEqual(rx[IP].dst, ep1.ip4)
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 117)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep4.mac)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep3.ip6)
+
+        rxs = self.send_and_expect(self.pg2, p6[1] * 17, sep3.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep3.mac)
+            self.assertEqual(rx[IPv6].src, ep3.ip6)
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
+
+        #
+        # programme the unknown EP
+        #
+        sep4.add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, sep4.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep4.mac)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
+            self.assertEqual(rx[IPv6].dst, ep3.ip6)
+
+        #
+        # and revert back to unprogrammed
+        #
+        sep4.remove_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 117)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep4.mac)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep3.ip6)
+
+        c1.remove_vpp_config()
+        c2.remove_vpp_config()
+
+        #
+        # test the symmetric hash mode
+        #
+        c1 = VppGbpContract(
+            self, 402, epg_220.sclass, epg_222.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        c2 = VppGbpContract(
+            self, 402, epg_222.sclass, epg_220.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        #
+        # send again with the contract preset, now packets arrive
+        # at SEP1 for both directions
+        #
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep3.ip4)
+
+        rxs = self.send_and_expect(self.pg2, p4[1] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep3.ip4)
+            self.assertEqual(rx[IP].dst, ep1.ip4)
+
+        #
+        # programme the unknown EP for the L3 tests
+        #
+        sep4.add_vpp_config()
+
+        #
+        # an L3 switch packet between local EPs in different EPGs
+        #  different dest ports on each so the are LB hashed differently
+        #
+        p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IP(src=ep1.ip4, dst=ep2.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep2.mac, dst=str(self.router_mac)) /
+               IP(src=ep2.ip4, dst=ep1.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+        p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IPv6(src=ep1.ip6, dst=ep2.ip6) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep2.mac, dst=str(self.router_mac)) /
+               IPv6(src=ep2.ip6, dst=ep1.ip6) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+
+        c3 = VppGbpContract(
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
+
+        #
+        # learn a remote EP in EPG 221
+        #   packets coming from unknown remote EPs will be leant & redirected
+        #
+        vx_tun_l3 = VppGbpVxlanTunnel(
+            self, 444, rd1.rd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L3,
+            self.pg2.local_ip4)
+        vx_tun_l3.add_vpp_config()
+
+        c4 = VppGbpContract(
+            self, 402, epg_221.sclass, epg_220.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c4.add_vpp_config()
+
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=444, gpid=441, flags=0x88) /
+             Ether(src="00:22:22:22:22:33", dst=str(self.router_mac)) /
+             IP(src="10.0.0.88", dst=ep1.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        # unknown remote EP to local EP redirected
+        rxs = self.send_and_expect(self.pg7, [p], sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, "10.0.0.88")
+            self.assertEqual(rx[IP].dst, ep1.ip4)
+
+        # endpoint learnt via the parent GBP-vxlan interface
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip="10.0.0.88"))
+
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=444, gpid=441, flags=0x88) /
+             Ether(src="00:22:22:22:22:33", dst=str(self.router_mac)) /
+             IPv6(src="2001:10::88", dst=ep1.ip6) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        # unknown remote EP to local EP redirected (ipv6)
+        rxs = self.send_and_expect(self.pg7, [p], sep3.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep3.mac)
+            self.assertEqual(rx[IPv6].src, "2001:10::88")
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
+
+        # endpoint learnt via the parent GBP-vxlan interface
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip="2001:10::88"))
+
+        #
+        # L3 switch from local to remote EP
+        #
+        p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IP(src=ep1.ip4, dst="10.0.0.88") /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+        p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IPv6(src=ep1.ip6, dst="2001:10::88") /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, "10.0.0.88")
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, sep4.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep4.mac)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
+            self.assertEqual(rx[IPv6].dst, "2001:10::88")
+
+        #
+        # test the dst-ip hash mode
+        #
+        c5 = VppGbpContract(
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd),
+                 VppGbpContractNextHop(sep2.vmac, sep2.epg.bd,
+                                       sep2.ip4, sep2.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                    [VppGbpContractNextHop(sep3.vmac, sep3.epg.bd,
+                                           sep3.ip6, sep3.epg.rd),
+                     VppGbpContractNextHop(sep4.vmac, sep4.epg.bd,
+                                           sep4.ip6, sep4.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c5.add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, "10.0.0.88")
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, sep3.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep3.mac)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
+            self.assertEqual(rx[IPv6].dst, "2001:10::88")
+
+        #
+        # a programmed remote SEP in EPG 320
+        #
+
+        # gbp vxlan tunnel for the remote SEP
+        vx_tun_l3_sep = VppGbpVxlanTunnel(
+            self, 555, rd1.rd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L3,
+            self.pg2.local_ip4)
+        vx_tun_l3_sep.add_vpp_config()
+
+        # remote SEP
+        sep5 = VppGbpEndpoint(self, vx_tun_l3_sep,
+                              epg_320, None,
+                              "12.0.0.10", "13.0.0.10",
+                              "4001:10::10", "5001:10::10",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                              self.pg7.local_ip4,
+                              self.pg7.remote_ip4,
+                              mac=None)
+        sep5.add_vpp_config()
+
+        #
+        # local l3out redirect tests
+        #
+
+        # add local l3out
+        # the external bd
+        self.loop4.set_mac(self.router_mac)
+        b_lo4_ip4 = VppIpInterfaceBind(self, self.loop4, t4).add_vpp_config()
+        b_lo4_ip6 = VppIpInterfaceBind(self, self.loop4, t6).add_vpp_config()
+        ebd = VppBridgeDomain(self, 100)
+        ebd.add_vpp_config()
+        gebd = VppGbpBridgeDomain(self, ebd, rd1, self.loop4, None, None)
+        gebd.add_vpp_config()
+        # the external epg
+        eepg = VppGbpEndpointGroup(self, 888, 765, rd1, gebd,
+                                   None, gebd.bvi,
+                                   "10.1.0.128",
+                                   "2001:10:1::128",
+                                   VppGbpEndpointRetention(60))
+        eepg.add_vpp_config()
+        # add subnets to BVI
+        VppIpInterfaceAddress(
+            self,
+            gebd.bvi,
+            "10.1.0.128",
+            24, bind=b_lo4_ip4).add_vpp_config()
+        VppIpInterfaceAddress(
+            self,
+            gebd.bvi,
+            "2001:10:1::128",
+            64, bind=b_lo4_ip6).add_vpp_config()
+        # ... which are L3-out subnets
+        VppGbpSubnet(self, rd1, "10.1.0.0", 24,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=765).add_vpp_config()
+        VppGbpSubnet(self, rd1, "2001:10:1::128", 64,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=765).add_vpp_config()
+        # external endpoints
+        VppL2Vtr(self, self.vlan_100, L2_VTR_OP.L2_POP_1).add_vpp_config()
+        eep1 = VppGbpEndpoint(self, self.vlan_100, eepg, None, "10.1.0.1",
+                              "11.1.0.1", "2001:10:1::1", "3001:10:1::1",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_EXTERNAL)
+        eep1.add_vpp_config()
+        VppL2Vtr(self, self.vlan_101, L2_VTR_OP.L2_POP_1).add_vpp_config()
+        eep2 = VppGbpEndpoint(self, self.vlan_101, eepg, None, "10.1.0.2",
+                              "11.1.0.2", "2001:10:1::2", "3001:10:1::2",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_EXTERNAL)
+        eep2.add_vpp_config()
+
+        # external subnets reachable though eep1 and eep2 respectively
+        VppIpRoute(self, "10.220.0.0", 24,
+                   [VppRoutePath(eep1.ip4, eep1.epg.bvi.sw_if_index)],
+                   table_id=t4.table_id).add_vpp_config()
+        VppGbpSubnet(self, rd1, "10.220.0.0", 24,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=4220).add_vpp_config()
+        VppIpRoute(self, "10:220::", 64,
+                   [VppRoutePath(eep1.ip6, eep1.epg.bvi.sw_if_index)],
+                   table_id=t6.table_id).add_vpp_config()
+        VppGbpSubnet(self, rd1, "10:220::", 64,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=4220).add_vpp_config()
+        VppIpRoute(self, "10.221.0.0", 24,
+                   [VppRoutePath(eep2.ip4, eep2.epg.bvi.sw_if_index)],
+                   table_id=t4.table_id).add_vpp_config()
+        VppGbpSubnet(self, rd1, "10.221.0.0", 24,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=4221).add_vpp_config()
+        VppIpRoute(self, "10:221::", 64,
+                   [VppRoutePath(eep2.ip6, eep2.epg.bvi.sw_if_index)],
+                   table_id=t6.table_id).add_vpp_config()
+        VppGbpSubnet(self, rd1, "10:221::", 64,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+                     sclass=4221).add_vpp_config()
+
+        #
+        # l3out redirect to remote (known, then unknown) SEP
+        #
+
+        # packets from 1 external subnet to the other
+        p = [(Ether(src=eep1.mac, dst=self.router_mac) /
+              Dot1Q(vlan=100) /
+              IP(src="10.220.0.17", dst="10.221.0.65") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (Ether(src=eep1.mac, dst=self.router_mac) /
+              Dot1Q(vlan=100) /
+              IPv6(src="10:220::17", dst="10:221::65") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))]
+
+        # packets should be dropped in absence of contract
+        self.send_and_assert_no_replies(self.pg0, p)
+
+        # contract redirecting to sep5
+        VppGbpContract(
+            self, 402, 4220, 4221, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                [VppGbpContractNextHop(sep5.vmac, sep5.epg.bd,
+                                       sep5.ip4, sep5.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                    [VppGbpContractNextHop(sep5.vmac, sep5.epg.bd,
+                                           sep5.ip6, sep5.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6]).add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg7)
+
+        for rx, tx in zip(rxs, p):
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            # this should use the programmed remote leaf TEP
+            self.assertEqual(rx[VXLAN].vni, 555)
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            rxip = rx[VXLAN][Ether].payload
+            txip = tx[Dot1Q].payload
+            self.assertEqual(rxip.src, txip.src)
+            self.assertEqual(rxip.dst, txip.dst)
+
+        # remote SEP: it is now an unknown remote SEP and should go
+        # to spine proxy
+        sep5.remove_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg7)
+
+        for rx, tx in zip(rxs, p):
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            # this should use the spine proxy TEP
+            self.assertEqual(rx[VXLAN].vni, epg_320.bd.uu_fwd.vni)
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            rxip = rx[VXLAN][Ether].payload
+            txip = tx[Dot1Q].payload
+            self.assertEqual(rxip.src, txip.src)
+            self.assertEqual(rxip.dst, txip.dst)
+
+        #
+        # l3out redirect to local SEP
+        #
+
+        # change the contract between l3out to redirect to local SEPs
+        # instead of remote SEP
+        VppGbpContract(
+            self, 402, 4220, 4221, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                    [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                           sep1.ip6, sep1.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6]).add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p, sep1.itf)
+        for rx, tx in zip(rxs, p):
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            rxip = rx[Ether].payload
+            txip = tx[Ether].payload
+            self.assertEqual(rxip.src, txip.src)
+            self.assertEqual(rxip.dst, txip.dst)
+
+        #
+        # redirect remote EP to remote (known then unknown) SEP
+        #
+
+        # remote SEP known again
+        sep5.add_vpp_config()
+
+        # contract to redirect to learnt SEP
+        VppGbpContract(
+            self, 402, epg_221.sclass, epg_222.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                [VppGbpContractNextHop(sep5.vmac, sep5.epg.bd,
+                                       sep5.ip4, sep5.epg.rd)]),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
+                    [VppGbpContractNextHop(sep5.vmac, sep5.epg.bd,
+                                           sep5.ip6, sep5.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6]).add_vpp_config()
+
+        # packets from unknown EP 221 to known EP in EPG 222
+        # should be redirected to known remote SEP
+        base = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+                IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+                UDP(sport=1234, dport=48879) /
+                VXLAN(vni=444, gpid=441, flags=0x88) /
+                Ether(src="00:22:22:22:22:44", dst=str(self.router_mac)))
+        p = [(base /
+              IP(src="10.0.1.100", dst=ep3.ip4) /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (base /
+              IPv6(src="2001:10::100", dst=ep3.ip6) /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))]
+
+        # unknown remote EP to local EP redirected to known remote SEP
+        rxs = self.send_and_expect(self.pg7, p, self.pg7)
+
+        for rx, tx in zip(rxs, p):
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            # this should use the programmed remote leaf TEP
+            self.assertEqual(rx[VXLAN].vni, 555)
+            self.assertEqual(rx[VXLAN].gpid, epg_221.sclass)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+            rxip = rx[VXLAN][Ether].payload
+            txip = tx[VXLAN][Ether].payload
+            self.assertEqual(rxip.src, txip.src)
+            self.assertEqual(rxip.dst, txip.dst)
+
+        # endpoint learnt via the parent GBP-vxlan interface
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip="10.0.1.100"))
+        self.assertTrue(find_gbp_endpoint(self,
+                                          vx_tun_l3._sw_if_index,
+                                          ip="2001:10::100"))
+
+        # remote SEP: it is now an unknown remote SEP and should go
+        # to spine proxy
+        sep5.remove_vpp_config()
+
+        # remote EP (coming from spine proxy) to local EP redirected to
+        # known remote SEP
+        rxs = self.send_and_expect(self.pg7, p, self.pg7)
+
+        for rx, tx in zip(rxs, p):
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            # this should use the spine proxy TEP
+            self.assertEqual(rx[VXLAN].vni, epg_320.bd.uu_fwd.vni)
+            self.assertEqual(rx[VXLAN].gpid, epg_221.sclass)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+            rxip = rx[VXLAN][Ether].payload
+            txip = tx[VXLAN][Ether].payload
+            self.assertEqual(rxip.src, txip.src)
+            self.assertEqual(rxip.dst, txip.dst)
+
+        #
+        # cleanup
+        #
+        self.pg7.unconfig_ip4()
+
+    def test_gbp_redirect_extended(self):
+        """ GBP Endpoint Redirect Extended """
+
+        self.vapi.cli("set logging class gbp level debug")
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        routed_dst_mac = "00:0c:0c:0c:0c:0c"
+        routed_src_mac = "00:22:bd:f8:19:ff"
+
+        learnt = [{'mac': '00:00:11:11:11:02',
+                   'ip': '10.0.1.2',
+                   'ip6': '2001:10::2'},
+                  {'mac': '00:00:11:11:11:03',
+                   'ip': '10.0.1.3',
+                   'ip6': '2001:10::3'}]
+
+        #
+        # IP tables
+        #
+        t4 = VppIpTable(self, 1)
+        t4.add_vpp_config()
+        t6 = VppIpTable(self, 1, True)
+        t6.add_vpp_config()
+
+        # create IPv4 and IPv6 RD UU VxLAN-GBP TEP and bind them to the right
+        # VRF
+        rd_uu4 = VppVxlanGbpTunnel(
+            self,
+            self.pg7.local_ip4,
+            self.pg7.remote_ip4,
+            114,
+            mode=(VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                  VXLAN_GBP_API_TUNNEL_MODE_L3))
+        rd_uu4.add_vpp_config()
+        VppIpInterfaceBind(self, rd_uu4, t4).add_vpp_config()
+
+        rd_uu6 = VppVxlanGbpTunnel(
+            self,
+            self.pg7.local_ip4,
+            self.pg7.remote_ip4,
+            115,
+            mode=(VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                  VXLAN_GBP_API_TUNNEL_MODE_L3))
+        rd_uu6.add_vpp_config()
+        VppIpInterfaceBind(self, rd_uu6, t4).add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 2, 402, t4, t6, rd_uu4, rd_uu6)
+        rd1.add_vpp_config()
+
+        self.loop0.set_mac(self.router_mac)
+        self.loop1.set_mac(self.router_mac)
+        self.loop2.set_mac(self.router_mac)
+
+        #
+        # Bind the BVI to the RD
+        #
+        b_lo0_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_lo0_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        b_lo1_ip4 = VppIpInterfaceBind(self, self.loop1, t4).add_vpp_config()
+        b_lo1_ip6 = VppIpInterfaceBind(self, self.loop1, t6).add_vpp_config()
+        b_lo2_ip4 = VppIpInterfaceBind(self, self.loop2, t4).add_vpp_config()
+        b_lo2_ip6 = VppIpInterfaceBind(self, self.loop2, t6).add_vpp_config()
+
+        #
+        # Pg7 hosts a BD's UU-fwd
+        #
+        self.pg7.config_ip4()
+        self.pg7.resolve_arp()
+
+        #
+        # a GBP bridge domains for the EPs
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0)
+        gbd1.add_vpp_config()
+
+        bd2 = VppBridgeDomain(self, 2)
+        bd2.add_vpp_config()
+        gbd2 = VppGbpBridgeDomain(self, bd2, rd1, self.loop1)
+        gbd2.add_vpp_config()
+
+        # ... and has a /32 and /128 applied
+        ip4_addr1 = VppIpInterfaceAddress(self, gbd1.bvi,
+                                          "10.0.0.128", 32,
+                                          bind=b_lo0_ip4).add_vpp_config()
+        ip6_addr1 = VppIpInterfaceAddress(self, gbd1.bvi,
+                                          "2001:10::128", 128,
+                                          bind=b_lo0_ip6).add_vpp_config()
+        ip4_addr2 = VppIpInterfaceAddress(self, gbd2.bvi,
+                                          "10.0.1.128", 32,
+                                          bind=b_lo1_ip4).add_vpp_config()
+        ip6_addr2 = VppIpInterfaceAddress(self, gbd2.bvi,
+                                          "2001:11::128", 128,
+                                          bind=b_lo1_ip6).add_vpp_config()
+
+        #
+        # The Endpoint-groups
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 440, rd1, gbd1,
+                                      None, gbd1.bvi,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(60))
+        epg_220.add_vpp_config()
+        epg_221 = VppGbpEndpointGroup(self, 221, 441, rd1, gbd2,
+                                      None, gbd2.bvi,
+                                      "10.0.1.128",
+                                      "2001:11::128",
+                                      VppGbpEndpointRetention(60))
+        epg_221.add_vpp_config()
+
+        #
+        # a GBP bridge domains for the SEPs
+        #
+        bd_uu3 = VppVxlanGbpTunnel(self, self.pg7.local_ip4,
+                                   self.pg7.remote_ip4, 116)
+        bd_uu3.add_vpp_config()
+
+        bd3 = VppBridgeDomain(self, 3)
+        bd3.add_vpp_config()
+        gbd3 = VppGbpBridgeDomain(self, bd3, rd1, self.loop2,
+                                  bd_uu3, learn=False)
+        gbd3.add_vpp_config()
+
+        ip4_addr3 = VppIpInterfaceAddress(self, gbd3.bvi,
+                                          "12.0.0.128", 32,
+                                          bind=b_lo2_ip4).add_vpp_config()
+        ip6_addr3 = VppIpInterfaceAddress(self, gbd3.bvi,
+                                          "4001:10::128", 128,
+                                          bind=b_lo2_ip6).add_vpp_config()
+
+        #
+        # self.logger.info(self.vapi.cli("show gbp bridge"))
+        # self.logger.info(self.vapi.cli("show vxlan-gbp tunnel"))
+        # self.logger.info(self.vapi.cli("show gbp vxlan"))
+        # self.logger.info(self.vapi.cli("show int addr"))
+        #
+
+        #
+        # EPGs in which the service endpoints exist
+        #
+        epg_320 = VppGbpEndpointGroup(self, 320, 550, rd1, gbd3,
+                                      None, gbd3.bvi,
+                                      "12.0.0.128",
+                                      "4001:10::128",
+                                      VppGbpEndpointRetention(60))
+        epg_320.add_vpp_config()
+
+        #
+        # endpoints
+        #
+        ep1 = VppGbpEndpoint(self, self.pg0,
+                             epg_220, None,
+                             "10.0.0.1", "11.0.0.1",
+                             "2001:10::1", "3001:10::1")
+        ep1.add_vpp_config()
+        ep2 = VppGbpEndpoint(self, self.pg1,
+                             epg_221, None,
+                             "10.0.1.1", "11.0.1.1",
+                             "2001:11::1", "3001:11::1")
+        ep2.add_vpp_config()
+
+        #
+        # service endpoints
+        #
+        sep1 = VppGbpEndpoint(self, self.pg3,
+                              epg_320, None,
+                              "12.0.0.1", "13.0.0.1",
+                              "4001:10::1", "5001:10::1")
+        sep2 = VppGbpEndpoint(self, self.pg4,
+                              epg_320, None,
+                              "12.0.0.2", "13.0.0.2",
+                              "4001:10::2", "5001:10::2")
+
+        # sep1 and sep2 are not added to config yet
+        # they are unknown for now
+
+        #
+        # add routes to EPG subnets
+        #
+        VppGbpSubnet(self, rd1, "10.0.0.0", 24,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_TRANSPORT
+                     ).add_vpp_config()
+        VppGbpSubnet(self, rd1, "10.0.1.0", 24,
+                     VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_TRANSPORT
+                     ).add_vpp_config()
+
+        #
+        # Local host to known local host in different BD
+        # with SFC contract (source and destination are in
+        # one node and service endpoint in another node)
+        #
+        p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IP(src=ep1.ip4, dst=ep2.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep2.mac, dst=str(self.router_mac)) /
+               IP(src=ep2.ip4, dst=ep1.ip4) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))]
+        p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
+               IPv6(src=ep1.ip6, dst=ep2.ip6) /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100)),
+              (Ether(src=ep2.mac, dst=str(self.router_mac)) /
+               IPv6(src=ep2.ip6, dst=ep1.ip6) /
+               UDP(sport=1234, dport=1230) /
+               Raw(b'\xa5' * 100))]
+
+        # should be dropped since no contract yet
+        self.send_and_assert_no_replies(self.pg0, [p4[0]])
+        self.send_and_assert_no_replies(self.pg0, [p6[0]])
+
+        #
+        # Add a contract with a rule to load-balance redirect via SEP1 and SEP2
+        # one of the next-hops is via an EP that is not known
+        #
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
+
+        #
+        # test the src-ip hash mode
+        #
+        c1 = VppGbpContract(
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd)]),
+             VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip6, sep1.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        c2 = VppGbpContract(
+            self, 402, epg_221.sclass, epg_220.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip4, sep1.epg.rd)]),
+             VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
+                [VppGbpContractNextHop(sep1.vmac, sep1.epg.bd,
+                                       sep1.ip6, sep1.epg.rd)])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+
+        # ep1 <--> ep2 redirected through sep1
+        # sep1 is unknown
+        # packet is redirected to sep bd and then go through sep bd UU
+
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 116)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep1.mac)
+            self.assertEqual(inner[IP].src, ep1.ip4)
+            self.assertEqual(inner[IP].dst, ep2.ip4)
+
+        rxs = self.send_and_expect(self.pg1, p4[1] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 116)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep1.mac)
+            self.assertEqual(inner[IP].src, ep2.ip4)
+            self.assertEqual(inner[IP].dst, ep1.ip4)
+
+        rxs = self.send_and_expect(self.pg0, p6[0] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 116)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep1.mac)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep2.ip6)
+
+        rxs = self.send_and_expect(self.pg1, p6[1] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 116)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, sep1.mac)
+            self.assertEqual(inner[IPv6].src, ep2.ip6)
+            self.assertEqual(inner[IPv6].dst, ep1.ip6)
+
+        # configure sep1: it is now local
+        # packets between ep1 and ep2 are redirected locally
+        sep1.add_vpp_config()
+
+        rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
+
+        rxs = self.send_and_expect(self.pg1, p6[1] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, routed_src_mac)
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IPv6].src, ep2.ip6)
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
+
+        # packet coming from the l2 spine-proxy to sep1
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=116, gpid=440, gpflags=0x08, flags=0x88) /
+             Ether(src=str(self.router_mac), dst=sep1.mac) /
+             IP(src=ep1.ip4, dst=ep2.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, [p] * 17, sep1.itf)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, sep1.mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
+
+        # contract for SEP to communicate with dst EP
+        c3 = VppGbpContract(
+            self, 402, epg_320.sclass, epg_221.sclass, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC),
+             VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC)],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        # temporarily remove ep2, so that ep2 is remote & unknown
+        ep2.remove_vpp_config()
+
+        # packet going back from sep1 to its original dest (ep2)
+        # as ep2 is now unknown (see above), it must go through
+        # the rd UU (packet is routed)
+
+        p1 = (Ether(src=sep1.mac, dst=self.router_mac) /
+              IP(src=ep1.ip4, dst=ep2.ip4) /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg3, [p1] * 17, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 114)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # redirect policy has been applied
+            inner = rx[VXLAN].payload
+            self.assertEqual(inner[Ether].src, routed_src_mac)
+            self.assertEqual(inner[Ether].dst, routed_dst_mac)
+            self.assertEqual(inner[IP].src, ep1.ip4)
+            self.assertEqual(inner[IP].dst, ep2.ip4)
+
+        self.logger.info(self.vapi.cli("show bridge 3 detail"))
+        sep1.remove_vpp_config()
+
+        self.logger.info(self.vapi.cli("show bridge 1 detail"))
+        self.logger.info(self.vapi.cli("show bridge 2 detail"))
+
+        # re-add ep2: it is local again :)
+        ep2.add_vpp_config()
+
+        # packet coming back from the remote sep through rd UU
+        p2 = (Ether(src=self.pg7.remote_mac,
+                    dst=self.pg7.local_mac) /
+              IP(src=self.pg7.remote_ip4,
+                 dst=self.pg7.local_ip4) /
+              UDP(sport=1234, dport=48879) /
+              VXLAN(vni=114, gpid=441, gpflags=0x09, flags=0x88) /
+              Ether(src=str(self.router_mac), dst=self.router_mac) /
+              IP(src=ep1.ip4, dst=ep2.ip4) /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, [p2], self.pg1)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
+
+        #
+        # bd_uu2.add_vpp_config()
+        #
+
+        #
+        # cleanup
+        #
+        c1.remove_vpp_config()
+        c2.remove_vpp_config()
+        c3.remove_vpp_config()
+        self.pg7.unconfig_ip4()
+
+    def test_gbp_l3_out(self):
+        """ GBP L3 Out """
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        self.vapi.cli("set logging class gbp level debug")
+
+        routed_dst_mac = "00:0c:0c:0c:0c:0c"
+        routed_src_mac = "00:22:bd:f8:19:ff"
+
+        #
+        # IP tables
+        #
+        t4 = VppIpTable(self, 1)
+        t4.add_vpp_config()
+        t6 = VppIpTable(self, 1, True)
+        t6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 2, 55, t4, t6)
+        rd1.add_vpp_config()
+
+        self.loop0.set_mac(self.router_mac)
+
+        #
+        # Bind the BVI to the RD
+        #
+        b_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+
+        #
+        # Pg7 hosts a BD's BUM
+        # Pg1 some other l3 interface
+        #
+        self.pg7.config_ip4()
+        self.pg7.resolve_arp()
+
+        #
+        # a multicast vxlan-gbp tunnel for broadcast in the BD
+        #
+        tun_bm = VppVxlanGbpTunnel(self, self.pg7.local_ip4,
+                                   "239.1.1.1", 88,
+                                   mcast_itf=self.pg7)
+        tun_bm.add_vpp_config()
+
+        #
+        # a GBP external bridge domains for the EPs
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0, None, tun_bm)
+        gbd1.add_vpp_config()
+
+        #
+        # The Endpoint-groups in which the external endpoints exist
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 113, rd1, gbd1,
+                                      None, gbd1.bvi,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(4))
+        epg_220.add_vpp_config()
+
+        # the BVIs have the subnets applied ...
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128",
+                                         24, bind=b_ip4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128",
+                                         64, bind=b_ip6).add_vpp_config()
+
+        # ... which are L3-out subnets
+        l3o_1 = VppGbpSubnet(
+            self, rd1, "10.0.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=113)
+        l3o_1.add_vpp_config()
+
+        #
+        # an external interface attached to the outside world and the
+        # external BD
+        #
+        VppL2Vtr(self, self.vlan_100, L2_VTR_OP.L2_POP_1).add_vpp_config()
+        VppL2Vtr(self, self.vlan_101, L2_VTR_OP.L2_POP_1).add_vpp_config()
+        vlan_144 = VppDot1QSubint(self, self.pg0, 144)
+        vlan_144.admin_up()
+        # vlan_102 is not poped
+
+        #
+        # an unicast vxlan-gbp for inter-RD traffic
+        #
+        vx_tun_l3 = VppGbpVxlanTunnel(
+            self, 444, rd1.rd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L3,
+            self.pg2.local_ip4)
+        vx_tun_l3.add_vpp_config()
+
+        #
+        # External Endpoints
+        #
+        eep1 = VppGbpEndpoint(self, self.vlan_100,
+                              epg_220, None,
+                              "10.0.0.1", "11.0.0.1",
+                              "2001:10::1", "3001::1",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_EXTERNAL)
+        eep1.add_vpp_config()
+        eep2 = VppGbpEndpoint(self, self.vlan_101,
+                              epg_220, None,
+                              "10.0.0.2", "11.0.0.2",
+                              "2001:10::2", "3001::2",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_EXTERNAL)
+        eep2.add_vpp_config()
+        eep3 = VppGbpEndpoint(self, self.vlan_102,
+                              epg_220, None,
+                              "10.0.0.3", "11.0.0.3",
+                              "2001:10::3", "3001::3",
+                              ep_flags.GBP_API_ENDPOINT_FLAG_EXTERNAL)
+        eep3.add_vpp_config()
+
+        #
+        # A remote external endpoint
+        #
+        rep = VppGbpEndpoint(self, vx_tun_l3,
+                             epg_220, None,
+                             "10.0.0.101", "11.0.0.101",
+                             "2001:10::101", "3001::101",
+                             ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                             self.pg7.local_ip4,
+                             self.pg7.remote_ip4,
+                             mac=None)
+        rep.add_vpp_config()
+
+        #
+        # EP1 impersonating EP3 is dropped
+        #
+        p = (Ether(src=eep1.mac, dst="ff:ff:ff:ff:ff:ff") /
+             Dot1Q(vlan=100) /
+             ARP(op="who-has",
+                 psrc="10.0.0.3", pdst="10.0.0.128",
+                 hwsrc=eep1.mac, hwdst="ff:ff:ff:ff:ff:ff"))
+        self.send_and_assert_no_replies(self.pg0, p)
+
+        #
+        # ARP packet from External EPs are accepted and replied to
+        #
+        p_arp = (Ether(src=eep1.mac, dst="ff:ff:ff:ff:ff:ff") /
+                 Dot1Q(vlan=100) /
+                 ARP(op="who-has",
+                     psrc=eep1.ip4, pdst="10.0.0.128",
+                     hwsrc=eep1.mac, hwdst="ff:ff:ff:ff:ff:ff"))
+        rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0)
+
+        #
+        # ARP packet from host in remote subnet are accepted and replied to
+        #
+        p_arp = (Ether(src=eep3.mac, dst="ff:ff:ff:ff:ff:ff") /
+                 Dot1Q(vlan=102) /
+                 ARP(op="who-has",
+                     psrc=eep3.ip4, pdst="10.0.0.128",
+                     hwsrc=eep3.mac, hwdst="ff:ff:ff:ff:ff:ff"))
+        rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0)
+
+        #
+        # packets destined to unknown addresses in the BVI's subnet
+        # are ARP'd for
+        #
+        p4 = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IP(src="10.0.0.1", dst="10.0.0.88") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))
+        p6 = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IPv6(src="2001:10::1", dst="2001:10::88") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p4 * 1, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            # self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, "239.1.1.1")
+            self.assertEqual(rx[VXLAN].vni, 88)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # policy was applied to the original IP packet
+            self.assertEqual(rx[VXLAN].gpid, 113)
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            self.assertFalse(rx[VXLAN].gpflags.D)
+
+            inner = rx[VXLAN].payload
+
+            self.assertTrue(inner.haslayer(ARP))
+
+        #
+        # remote to external
+        #
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=444, gpid=113, flags=0x88) /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.0.0.101", dst="10.0.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
+
+        #
+        # local EP pings router
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src=eep1.ip4, dst="10.0.0.128") /
+             ICMP(type='echo-request'))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, eep1.mac)
+            self.assertEqual(rx[Dot1Q].vlan, 100)
+
+        #
+        # local EP pings other local EP
+        #
+        p = (Ether(src=eep1.mac, dst=eep2.mac) /
+             Dot1Q(vlan=100) /
+             IP(src=eep1.ip4, dst=eep2.ip4) /
+             ICMP(type='echo-request'))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, eep1.mac)
+            self.assertEqual(rx[Ether].dst, eep2.mac)
+            self.assertEqual(rx[Dot1Q].vlan, 101)
+
+        #
+        # local EP pings router w/o vlan tag poped
+        #
+        p = (Ether(src=eep3.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=102) /
+             IP(src=eep3.ip4, dst="10.0.0.128") /
+             ICMP(type='echo-request'))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, self.vlan_102.remote_mac)
+
+        #
+        # A ip4 subnet reachable through the external EP1
+        #
+        ip_220 = VppIpRoute(self, "10.220.0.0", 24,
+                            [VppRoutePath(eep1.ip4,
+                                          eep1.epg.bvi.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_220.add_vpp_config()
+
+        l3o_220 = VppGbpSubnet(
+            self, rd1, "10.220.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4220)
+        l3o_220.add_vpp_config()
+
+        #
+        # An ip6 subnet reachable through the external EP1
+        #
+        ip6_220 = VppIpRoute(self, "10:220::", 64,
+                             [VppRoutePath(eep1.ip6,
+                                           eep1.epg.bvi.sw_if_index)],
+                             table_id=t6.table_id)
+        ip6_220.add_vpp_config()
+
+        l3o6_220 = VppGbpSubnet(
+            self, rd1, "10:220::", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4220)
+        l3o6_220.add_vpp_config()
+
+        #
+        # A subnet reachable through the external EP2
+        #
+        ip_221 = VppIpRoute(self, "10.221.0.0", 24,
+                            [VppRoutePath(eep2.ip4,
+                                          eep2.epg.bvi.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_221.add_vpp_config()
+
+        l3o_221 = VppGbpSubnet(
+            self, rd1, "10.221.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4221)
+        l3o_221.add_vpp_config()
+
+        #
+        # ping between hosts in remote subnets
+        #  dropped without a contract
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.221.0.1") /
+             ICMP(type='echo-request'))
+
+        self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # contract for the external nets to communicate
+        #
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
+
+        #
+        # A contract with the wrong scope is not matched
+        #
+        c_44 = VppGbpContract(
+            self, 44, 4220, 4221, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+             VppGbpContractRule(
+                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                 [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c_44.add_vpp_config()
+        self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        c1 = VppGbpContract(
+            self, 55, 4220, 4221, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        #
+        # Contracts allowing ext-net 200 to talk with external EPs
+        #
+        c2 = VppGbpContract(
+            self, 55, 4220, 113, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+        c3 = VppGbpContract(
+            self, 55, 113, 4220, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        #
+        # ping between hosts in remote subnets
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.221.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, eep2.mac)
+            self.assertEqual(rx[Dot1Q].vlan, 101)
+
+        # we did not learn these external hosts
+        self.assertFalse(find_gbp_endpoint(self, ip="10.220.0.1"))
+        self.assertFalse(find_gbp_endpoint(self, ip="10.221.0.1"))
+
+        #
+        # from remote external EP to local external EP
+        #
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=444, gpid=113, flags=0x88) /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.0.0.101", dst="10.220.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
+
+        #
+        # ping from an external host to the remote external EP
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst=rep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            # self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 444)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # the sclass of the ext-net the packet came from
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            # policy was applied to the original IP packet
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            # since it's an external host the reciever should not learn it
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            inner = rx[VXLAN].payload
+            self.assertEqual(inner[IP].src, "10.220.0.1")
+            self.assertEqual(inner[IP].dst, rep.ip4)
+
+        #
+        # An external subnet reachable via the remote external EP
+        #
+
+        #
+        # first the VXLAN-GBP tunnel over which it is reached
+        #
+        vx_tun_r1 = VppVxlanGbpTunnel(
+            self, self.pg7.local_ip4,
+            self.pg7.remote_ip4, 445,
+            mode=(VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                  VXLAN_GBP_API_TUNNEL_MODE_L3))
+        vx_tun_r1.add_vpp_config()
+        VppIpInterfaceBind(self, vx_tun_r1, t4).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh vxlan-gbp tunnel"))
+
+        #
+        # then the special adj to resolve through on that tunnel
+        #
+        n1 = VppNeighbor(self,
+                         vx_tun_r1.sw_if_index,
+                         "00:0c:0c:0c:0c:0c",
+                         self.pg7.remote_ip4)
+        n1.add_vpp_config()
+
+        #
+        # the route via the adj above
+        #
+        ip_222 = VppIpRoute(self, "10.222.0.0", 24,
+                            [VppRoutePath(self.pg7.remote_ip4,
+                                          vx_tun_r1.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_222.add_vpp_config()
+
+        l3o_222 = VppGbpSubnet(
+            self, rd1, "10.222.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4222)
+        l3o_222.add_vpp_config()
+
+        #
+        # ping between hosts in local and remote external subnets
+        #  dropped without a contract
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.222.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # Add contracts ext-nets for 220 -> 222
+        #
+        c4 = VppGbpContract(
+            self, 55, 4220, 4222, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c4.add_vpp_config()
+
+        #
+        # ping from host in local to remote external subnets
+        #
+        p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.222.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 3, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 445)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # the sclass of the ext-net the packet came from
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            # policy was applied to the original IP packet
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            # since it's an external host the reciever should not learn it
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            inner = rx[VXLAN].payload
+            self.assertEqual(inner[Ether].dst, "00:0c:0c:0c:0c:0c")
+            self.assertEqual(inner[IP].src, "10.220.0.1")
+            self.assertEqual(inner[IP].dst, "10.222.0.1")
+
+        #
+        # make the external subnet ECMP
+        #
+        vx_tun_r2 = VppVxlanGbpTunnel(
+            self, self.pg7.local_ip4,
+            self.pg7.remote_ip4, 446,
+            mode=(VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                  VXLAN_GBP_API_TUNNEL_MODE_L3))
+        vx_tun_r2.add_vpp_config()
+        VppIpInterfaceBind(self, vx_tun_r2, t4).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh vxlan-gbp tunnel"))
+
+        n2 = VppNeighbor(self,
+                         vx_tun_r2.sw_if_index,
+                         "00:0c:0c:0c:0c:0c",
+                         self.pg7.remote_ip4)
+        n2.add_vpp_config()
+
+        ip_222.modify([VppRoutePath(self.pg7.remote_ip4,
+                                    vx_tun_r1.sw_if_index),
+                       VppRoutePath(self.pg7.remote_ip4,
+                                    vx_tun_r2.sw_if_index)])
+
+        #
+        # now expect load-balance
+        #
+        p = [(Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IP(src="10.220.0.1", dst="10.222.0.1") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IP(src="10.220.0.1", dst="10.222.0.1") /
+              UDP(sport=1222, dport=1235) /
+              Raw(b'\xa5' * 100))]
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg7)
+
+        self.assertEqual(rxs[0][VXLAN].vni, 445)
+        self.assertEqual(rxs[1][VXLAN].vni, 446)
+
+        #
+        # Same LB test for v6
+        #
+        n3 = VppNeighbor(self,
+                         vx_tun_r1.sw_if_index,
+                         "00:0c:0c:0c:0c:0c",
+                         self.pg7.remote_ip6)
+        n3.add_vpp_config()
+        n4 = VppNeighbor(self,
+                         vx_tun_r2.sw_if_index,
+                         "00:0c:0c:0c:0c:0c",
+                         self.pg7.remote_ip6)
+        n4.add_vpp_config()
+
+        ip_222_6 = VppIpRoute(self, "10:222::", 64,
+                              [VppRoutePath(self.pg7.remote_ip6,
+                                            vx_tun_r1.sw_if_index),
+                               VppRoutePath(self.pg7.remote_ip6,
+                                            vx_tun_r2.sw_if_index)],
+                              table_id=t6.table_id)
+        ip_222_6.add_vpp_config()
+
+        l3o_222_6 = VppGbpSubnet(
+            self, rd1, "10:222::", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4222)
+        l3o_222_6.add_vpp_config()
+
+        p = [(Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IPv6(src="10:220::1", dst="10:222::1") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (Ether(src=eep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=100) /
+              IPv6(src="10:220::1", dst="10:222::1") /
+              UDP(sport=7777, dport=8881) /
+              Raw(b'\xa5' * 100))]
+
+        self.logger.info(self.vapi.cli("sh ip6 fib 10:222::1"))
+        rxs = self.send_and_expect(self.pg0, p, self.pg7)
+
+        self.assertEqual(rxs[0][VXLAN].vni, 445)
+        self.assertEqual(rxs[1][VXLAN].vni, 446)
+
+        #
+        # ping from host in remote to local external subnets
+        # there's no contract for this, but the A bit is set.
+        #
+        p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=445, gpid=4222, flags=0x88, gpflags='A') /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.222.0.1", dst="10.220.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, p * 3, self.pg0)
+        self.assertFalse(find_gbp_endpoint(self, ip="10.222.0.1"))
+
+        #
+        # ping from host in remote to remote external subnets
+        #   this is dropped by reflection check.
+        #
+        p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=445, gpid=4222, flags=0x88, gpflags='A') /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.222.0.1", dst="10.222.0.2") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
+
+        p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=445, gpid=4222, flags=0x88, gpflags='A') /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IPv6(src="10:222::1", dst="10:222::2") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
+
+        #
+        # local EP
+        #
+        lep1 = VppGbpEndpoint(self, vlan_144,
+                              epg_220, None,
+                              "10.0.0.44", "11.0.0.44",
+                              "2001:10::44", "3001::44")
+        lep1.add_vpp_config()
+
+        #
+        # local EP to local ip4 external subnet
+        #
+        p = (Ether(src=lep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=144) /
+             IP(src=lep1.ip4, dst="10.220.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, eep1.mac)
+            self.assertEqual(rx[Dot1Q].vlan, 100)
+
+        #
+        # local EP to local ip6 external subnet
+        #
+        p = (Ether(src=lep1.mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=144) /
+             IPv6(src=lep1.ip6, dst="10:220::1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, eep1.mac)
+            self.assertEqual(rx[Dot1Q].vlan, 100)
+
+        #
+        # ip4 and ip6 subnets that load-balance
+        #
+        ip_20 = VppIpRoute(self, "10.20.0.0", 24,
+                           [VppRoutePath(eep1.ip4,
+                                         eep1.epg.bvi.sw_if_index),
+                            VppRoutePath(eep2.ip4,
+                                         eep2.epg.bvi.sw_if_index)],
+                           table_id=t4.table_id)
+        ip_20.add_vpp_config()
+
+        l3o_20 = VppGbpSubnet(
+            self, rd1, "10.20.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4220)
+        l3o_20.add_vpp_config()
+
+        ip6_20 = VppIpRoute(self, "10:20::", 64,
+                            [VppRoutePath(eep1.ip6,
+                                          eep1.epg.bvi.sw_if_index),
+                             VppRoutePath(eep2.ip6,
+                                          eep2.epg.bvi.sw_if_index)],
+                            table_id=t6.table_id)
+        ip6_20.add_vpp_config()
+
+        l3o6_20 = VppGbpSubnet(
+            self, rd1, "10:20::", 64,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4220)
+        l3o6_20.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh ip fib 10.20.0.1"))
+        self.logger.info(self.vapi.cli("sh ip6 fib 10:20::1"))
+
+        # two ip6 packets whose port are chosen so they load-balance
+        p = [(Ether(src=lep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=144) /
+              IPv6(src=lep1.ip6, dst="10:20::1") /
+              UDP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 100)),
+             (Ether(src=lep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=144) /
+              IPv6(src=lep1.ip6, dst="10:20::1") /
+              UDP(sport=124, dport=1230) /
+              Raw(b'\xa5' * 100))]
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg0, 2)
+
+        self.assertEqual(rxs[0][Dot1Q].vlan, 101)
+        self.assertEqual(rxs[1][Dot1Q].vlan, 100)
+
+        # two ip4 packets whose port are chosen so they load-balance
+        p = [(Ether(src=lep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=144) /
+              IP(src=lep1.ip4, dst="10.20.0.1") /
+              UDP(sport=1235, dport=1235) /
+              Raw(b'\xa5' * 100)),
+             (Ether(src=lep1.mac, dst=str(self.router_mac)) /
+              Dot1Q(vlan=144) /
+              IP(src=lep1.ip4, dst="10.20.0.1") /
+              UDP(sport=124, dport=1230) /
+              Raw(b'\xa5' * 100))]
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg0, 2)
+
+        self.assertEqual(rxs[0][Dot1Q].vlan, 101)
+        self.assertEqual(rxs[1][Dot1Q].vlan, 100)
+
+        #
+        # cleanup
+        #
+        ip_222.remove_vpp_config()
+        self.pg7.unconfig_ip4()
+        self.vlan_101.set_vtr(L2_VTR_OP.L2_DISABLED)
+        self.vlan_100.set_vtr(L2_VTR_OP.L2_DISABLED)
+
+    def test_gbp_anon_l3_out(self):
+        """ GBP Anonymous L3 Out """
+
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        self.vapi.cli("set logging class gbp level debug")
+
+        routed_dst_mac = "00:0c:0c:0c:0c:0c"
+        routed_src_mac = "00:22:bd:f8:19:ff"
+
+        #
+        # IP tables
+        #
+        t4 = VppIpTable(self, 1)
+        t4.add_vpp_config()
+        t6 = VppIpTable(self, 1, True)
+        t6.add_vpp_config()
+
+        rd1 = VppGbpRouteDomain(self, 2, 55, t4, t6)
+        rd1.add_vpp_config()
+
+        self.loop0.set_mac(self.router_mac)
+
+        #
+        # Bind the BVI to the RD
+        #
+        bind_l0_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        bind_l0_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+
+        #
+        # Pg7 hosts a BD's BUM
+        # Pg1 some other l3 interface
+        #
+        self.pg7.config_ip4()
+        self.pg7.resolve_arp()
+
+        #
+        # a GBP external bridge domains for the EPs
+        #
+        bd1 = VppBridgeDomain(self, 1)
+        bd1.add_vpp_config()
+        gbd1 = VppGbpBridgeDomain(self, bd1, rd1, self.loop0, None, None)
+        gbd1.add_vpp_config()
+
+        #
+        # The Endpoint-groups in which the external endpoints exist
+        #
+        epg_220 = VppGbpEndpointGroup(self, 220, 113, rd1, gbd1,
+                                      None, gbd1.bvi,
+                                      "10.0.0.128",
+                                      "2001:10::128",
+                                      VppGbpEndpointRetention(4))
+        epg_220.add_vpp_config()
+
+        # the BVIs have the subnet applied ...
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 24,
+                                         bind=bind_l0_ip4).add_vpp_config()
+
+        # ... which is an Anonymous L3-out subnets
+        l3o_1 = VppGbpSubnet(
+            self, rd1, "10.0.0.0", 24,
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_ANON_L3_OUT,
+            sclass=113)
+        l3o_1.add_vpp_config()
+
+        #
+        # an external interface attached to the outside world and the
+        # external BD
+        #
+        VppL2Vtr(self, self.vlan_100, L2_VTR_OP.L2_POP_1).add_vpp_config()
+        VppL2Vtr(self, self.vlan_101, L2_VTR_OP.L2_POP_1).add_vpp_config()
+
+        #
+        # vlan_100 and vlan_101 are anonymous l3-out interfaces
+        #
+        ext_itf = VppGbpExtItf(self, self.vlan_100, bd1, rd1, anon=True)
+        ext_itf.add_vpp_config()
+        ext_itf = VppGbpExtItf(self, self.vlan_101, bd1, rd1, anon=True)
+        ext_itf.add_vpp_config()
+
+        #
+        # an unicast vxlan-gbp for inter-RD traffic
+        #
+        vx_tun_l3 = VppGbpVxlanTunnel(
+            self, 444, rd1.rd_id,
+            VppEnum.vl_api_gbp_vxlan_tunnel_mode_t.GBP_VXLAN_TUNNEL_MODE_L3,
+            self.pg2.local_ip4)
+        vx_tun_l3.add_vpp_config()
+
+        #
+        # A remote external endpoint
+        #
+        rep = VppGbpEndpoint(self, vx_tun_l3,
+                             epg_220, None,
+                             "10.0.0.201", "11.0.0.201",
+                             "2001:10::201", "3001::101",
+                             ep_flags.GBP_API_ENDPOINT_FLAG_REMOTE,
+                             self.pg7.local_ip4,
+                             self.pg7.remote_ip4,
+                             mac=None)
+        rep.add_vpp_config()
+
+        #
+        # ARP packet from host in external subnet are accepted, flooded and
+        # replied to. We expect 2 packets:
+        #   - APR request flooded over the other vlan subif
+        #   - ARP reply from BVI
+        #
+        p_arp = (Ether(src=self.vlan_100.remote_mac,
+                       dst="ff:ff:ff:ff:ff:ff") /
+                 Dot1Q(vlan=100) /
+                 ARP(op="who-has",
+                     psrc="10.0.0.100",
+                     pdst="10.0.0.128",
+                     hwsrc=self.vlan_100.remote_mac,
+                     hwdst="ff:ff:ff:ff:ff:ff"))
+        rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0, n_rx=2)
+
+        p_arp = (Ether(src=self.vlan_101.remote_mac,
+                       dst="ff:ff:ff:ff:ff:ff") /
+                 Dot1Q(vlan=101) /
+                 ARP(op="who-has",
+                     psrc='10.0.0.101',
+                     pdst="10.0.0.128",
+                     hwsrc=self.vlan_101.remote_mac,
+                     hwdst="ff:ff:ff:ff:ff:ff"))
+        rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0, n_rx=2)
+
+        #
+        # remote to external
+        #
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=vx_tun_l3.vni, gpid=epg_220.sclass, flags=0x88) /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src=str(rep.ip4), dst="10.0.0.100") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
+
+        #
+        # local EP pings router
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.0.0.100", dst="10.0.0.128") /
+             ICMP(type='echo-request'))
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, self.vlan_100.remote_mac)
+            self.assertEqual(rx[Dot1Q].vlan, 100)
+
+        #
+        # local EP pings other local EP
+        #
+        p = (Ether(src=self.vlan_100.remote_mac,
+                   dst=self.vlan_101.remote_mac) /
+             Dot1Q(vlan=100) /
+             IP(src="10.0.0.100", dst="10.0.0.101") /
+             ICMP(type='echo-request'))
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.vlan_100.remote_mac)
+            self.assertEqual(rx[Ether].dst, self.vlan_101.remote_mac)
+            self.assertEqual(rx[Dot1Q].vlan, 101)
+
+        #
+        # A subnet reachable through an external router on vlan 100
+        #
+        ip_220 = VppIpRoute(self, "10.220.0.0", 24,
+                            [VppRoutePath("10.0.0.100",
+                                          epg_220.bvi.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_220.add_vpp_config()
+
+        l3o_220 = VppGbpSubnet(
+            self, rd1, "10.220.0.0", 24,
+            # note: this a "regular" L3 out subnet (not connected)
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4220)
+        l3o_220.add_vpp_config()
+
+        #
+        # A subnet reachable through an external router on vlan 101
+        #
+        ip_221 = VppIpRoute(self, "10.221.0.0", 24,
+                            [VppRoutePath("10.0.0.101",
+                                          epg_220.bvi.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_221.add_vpp_config()
+
+        l3o_221 = VppGbpSubnet(
+            self, rd1, "10.221.0.0", 24,
+            # note: this a "regular" L3 out subnet (not connected)
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4221)
+        l3o_221.add_vpp_config()
+
+        #
+        # ping between hosts in remote subnets
+        #  dropped without a contract
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.221.0.1") /
+             ICMP(type='echo-request'))
+
+        rxs = self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # contract for the external nets to communicate
+        #
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
+
+        c1 = VppGbpContract(
+            self, 55, 4220, 4221, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c1.add_vpp_config()
+
+        #
+        # Contracts allowing ext-net 200 to talk with external EPs
+        #
+        c2 = VppGbpContract(
+            self, 55, 4220, 113, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c2.add_vpp_config()
+        c3 = VppGbpContract(
+            self, 55, 113, 4220, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c3.add_vpp_config()
+
+        #
+        # ping between hosts in remote subnets
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.221.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, str(self.router_mac))
+            self.assertEqual(rx[Ether].dst, self.vlan_101.remote_mac)
+            self.assertEqual(rx[Dot1Q].vlan, 101)
+
+        # we did not learn these external hosts
+        self.assertFalse(find_gbp_endpoint(self, ip="10.220.0.1"))
+        self.assertFalse(find_gbp_endpoint(self, ip="10.221.0.1"))
+
+        #
+        # from remote external EP to local external EP
+        #
+        p = (Ether(src=self.pg7.remote_mac,
+                   dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4,
+                dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=444, gpid=113, flags=0x88) /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src=rep.ip4, dst="10.220.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
+
+        #
+        # ping from an external host to the remote external EP
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst=rep.ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 1, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            # self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 444)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # the sclass of the ext-net the packet came from
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            # policy was applied to the original IP packet
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            # since it's an external host the reciever should not learn it
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            inner = rx[VXLAN].payload
+            self.assertEqual(inner[IP].src, "10.220.0.1")
+            self.assertEqual(inner[IP].dst, rep.ip4)
+
+        #
+        # An external subnet reachable via the remote external EP
+        #
+
+        #
+        # first the VXLAN-GBP tunnel over which it is reached
+        #
+        vx_tun_r = VppVxlanGbpTunnel(
+            self, self.pg7.local_ip4,
+            self.pg7.remote_ip4, 445,
+            mode=(VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                  VXLAN_GBP_API_TUNNEL_MODE_L3))
+        vx_tun_r.add_vpp_config()
+        VppIpInterfaceBind(self, vx_tun_r, t4).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh vxlan-gbp tunnel"))
+
+        #
+        # then the special adj to resolve through on that tunnel
+        #
+        n1 = VppNeighbor(self,
+                         vx_tun_r.sw_if_index,
+                         "00:0c:0c:0c:0c:0c",
+                         self.pg7.remote_ip4)
+        n1.add_vpp_config()
+
+        #
+        # the route via the adj above
+        #
+        ip_222 = VppIpRoute(self, "10.222.0.0", 24,
+                            [VppRoutePath(self.pg7.remote_ip4,
+                                          vx_tun_r.sw_if_index)],
+                            table_id=t4.table_id)
+        ip_222.add_vpp_config()
+
+        l3o_222 = VppGbpSubnet(
+            self, rd1, "10.222.0.0", 24,
+            # note: this a "regular" l3out subnet (not connected)
+            VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
+            sclass=4222)
+        l3o_222.add_vpp_config()
+
+        #
+        # ping between hosts in local and remote external subnets
+        #  dropped without a contract
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.222.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # Add contracts ext-nets for 220 -> 222
+        #
+        c4 = VppGbpContract(
+            self, 55, 4220, 4222, acl.acl_index,
+            [VppGbpContractRule(
+                VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                []),
+                VppGbpContractRule(
+                    VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
+                    VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
+                    [])],
+            [ETH_P_IP, ETH_P_IPV6])
+        c4.add_vpp_config()
+
+        #
+        # ping from host in local to remote external subnets
+        #
+        p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
+             Dot1Q(vlan=100) /
+             IP(src="10.220.0.1", dst="10.222.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg0, p * 3, self.pg7)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg7.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg7.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg7.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg7.remote_ip4)
+            self.assertEqual(rx[VXLAN].vni, 445)
+            self.assertTrue(rx[VXLAN].flags.G)
+            self.assertTrue(rx[VXLAN].flags.Instance)
+            # the sclass of the ext-net the packet came from
+            self.assertEqual(rx[VXLAN].gpid, 4220)
+            # policy was applied to the original IP packet
+            self.assertTrue(rx[VXLAN].gpflags.A)
+            # since it's an external host the reciever should not learn it
+            self.assertTrue(rx[VXLAN].gpflags.D)
+            inner = rx[VXLAN].payload
+            self.assertEqual(inner[Ether].dst, "00:0c:0c:0c:0c:0c")
+            self.assertEqual(inner[IP].src, "10.220.0.1")
+            self.assertEqual(inner[IP].dst, "10.222.0.1")
+
+        #
+        # ping from host in remote to local external subnets
+        # there's no contract for this, but the A bit is set.
+        #
+        p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=445, gpid=4222, flags=0x88, gpflags='A') /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.222.0.1", dst="10.220.0.1") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_expect(self.pg7, p * 3, self.pg0)
+        self.assertFalse(find_gbp_endpoint(self, ip="10.222.0.1"))
+
+        #
+        # ping from host in remote to remote external subnets
+        #   this is dropped by reflection check.
+        #
+        p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+             IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+             UDP(sport=1234, dport=48879) /
+             VXLAN(vni=445, gpid=4222, flags=0x88, gpflags='A') /
+             Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+             IP(src="10.222.0.1", dst="10.222.0.2") /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+
+        rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
+
+        #
+        # cleanup
+        #
+        self.vlan_101.set_vtr(L2_VTR_OP.L2_DISABLED)
+        self.vlan_100.set_vtr(L2_VTR_OP.L2_DISABLED)
+        self.pg7.unconfig_ip4()
+        # make sure the programmed EP is no longer learnt from DP
+        self.wait_for_ep_timeout(sw_if_index=rep.itf.sw_if_index, ip=rep.ip4)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_geneve.py b/test/test_geneve.py
new file mode 100644
index 0000000..9ce1f8f
--- /dev/null
+++ b/test/test_geneve.py
@@ -0,0 +1,307 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.contrib.geneve import GENEVE
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+
+class TestGeneve(BridgeDomain, VppTestCase):
+    """ GENEVE Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+
+        """
+        Encapsulate the original payload frame by adding GENEVE header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                GENEVE(vni=vni) /
+                pkt)
+
+    def ip_range(self, start, end):
+        """ range of remote ip's """
+        return ip4_range(self.pg0.remote_ip4, start, end)
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding GENEVE header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IP(src=src_ip, dst=self.mcast_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                GENEVE(vni=vni) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing GENEVE header
+        """
+        # check if is set I flag
+        # self.assertEqual(pkt[GENEVE].flags, int('0x8', 16))
+        return pkt[GENEVE].payload
+
+    # Method for checking GENEVE encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # TODO: add error messages
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify GENEVE tunnel source IP is VPP_IP and destination IP is MY_IP.
+        self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+            else:
+                self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+        # Verify UDP destination port is GENEVE 4789, source UDP port could be
+        #  arbitrary.
+        self.assertEqual(pkt[UDP].dport, type(self).dport)
+        # TODO: checksum check
+        # Verify VNI
+        self.assertEqual(pkt[GENEVE].vni, vni)
+
+    @classmethod
+    def create_geneve_flood_test_bd(cls, vni, n_ucast_tunnels):
+        # Create 10 ucast geneve tunnels under bd
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_ucast_tunnels
+        next_hop_address = cls.pg0.remote_ip4
+        for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+                                  ip_range_end):
+            # add host route so dest_ip4 will not be resolved
+            rip = VppIpRoute(cls, dest_ip4, 32,
+                             [VppRoutePath(next_hop_address,
+                                           INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+            r = cls.vapi.geneve_add_del_tunnel(
+                local_address=cls.pg0.local_ip4, remote_address=dest_ip4,
+                vni=vni)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=vni)
+
+    @classmethod
+    def add_del_shared_mcast_dst_load(cls, is_add):
+        """
+        add or del tunnels sharing the same mcast dst
+        to test geneve ref_count mechanism
+        """
+        n_shared_dst_tunnels = 10
+        vni_start = 10000
+        vni_end = vni_start + n_shared_dst_tunnels
+        for vni in range(vni_start, vni_end):
+            r = cls.vapi.geneve_add_del_tunnel(
+                local_address=cls.pg0.local_ip4,
+                remote_address=cls.mcast_ip4, mcast_sw_if_index=1,
+                is_add=is_add, vni=vni)
+            if r.sw_if_index == 0xffffffff:
+                raise ValueError("bad sw_if_index: ~0")
+
+    @classmethod
+    def add_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=1)
+
+    @classmethod
+    def del_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=0)
+
+    @classmethod
+    def add_del_mcast_tunnels_load(cls, is_add):
+        """
+        add or del tunnels to test geneve stability
+        """
+        n_distinct_dst_tunnels = 10
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_distinct_dst_tunnels
+        for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+                                  ip_range_end):
+            vni = int(dest_ip4.split('.')[3])
+            cls.vapi.geneve_add_del_tunnel(local_address=cls.pg0.local_ip4,
+                                           remote_address=dest_ip4,
+                                           mcast_sw_if_index=1, is_add=is_add,
+                                           vni=vni)
+
+    @classmethod
+    def add_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=0)
+
+    # Class method to start the GENEVE test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestGeneve, cls).setUpClass()
+
+        try:
+            cls.dport = 6081
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip4()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_arp()
+
+            # Our Multicast address
+            cls.mcast_ip4 = '239.1.1.1'
+            cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+
+            # Create GENEVE VTEP on VPP pg0, and put geneve_tunnel0 and pg1
+            #  into BD.
+            cls.single_tunnel_vni = 0xabcde
+            cls.single_tunnel_bd = 1
+            r = cls.vapi.geneve_add_del_tunnel(
+                local_address=cls.pg0.local_ip4,
+                remote_address=cls.pg0.remote_ip4, vni=cls.single_tunnel_vni)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd)
+
+            # Setup vni 2 to test multicast flooding
+            cls.n_ucast_tunnels = 10
+            cls.mcast_flood_bd = 2
+            cls.create_geneve_flood_test_bd(cls.mcast_flood_bd,
+                                            cls.n_ucast_tunnels)
+            r = cls.vapi.geneve_add_del_tunnel(
+                local_address=cls.pg0.local_ip4,
+                remote_address=cls.mcast_ip4, mcast_sw_if_index=1,
+                vni=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd)
+
+            # Add and delete mcast tunnels to check stability
+            cls.add_shared_mcast_dst_load()
+            cls.add_mcast_tunnels_load()
+            cls.del_shared_mcast_dst_load()
+            cls.del_mcast_tunnels_load()
+
+            # Setup vni 3 to test unicast flooding
+            cls.ucast_flood_bd = 3
+            cls.create_geneve_flood_test_bd(cls.ucast_flood_bd,
+                                            cls.n_ucast_tunnels)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd)
+        except Exception:
+            super(TestGeneve, cls).tearDownClass()
+            raise
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+    def tearDown(self):
+        super(TestGeneve, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+        self.logger.info(self.vapi.cli("show geneve tunnel"))
+
+
+class TestGeneveL3(VppTestCase):
+    """ GENEVE L3 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestGeneveL3, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.interfaces = list(cls.pg_interfaces)
+
+            for i in cls.interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.resolve_arp()
+        except Exception:
+            super(TestGeneveL3, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestGeneveL3, cls).tearDownClass()
+
+    def tearDown(self):
+        super(TestGeneveL3, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show geneve tunnel"))
+        self.logger.info(self.vapi.cli("show ip neighbor"))
+
+    def test_l3_packet(self):
+        vni = 1234
+        r = self.vapi.add_node_next(node_name="geneve4-input",
+                                    next_name="ethernet-input")
+        r = self.vapi.geneve_add_del_tunnel2(
+            is_add=1,
+            local_address=self.pg0.local_ip4,
+            remote_address=self.pg0.remote_ip4,
+            vni=vni,
+            l3_mode=1,
+            decap_next_index=r.next_index)
+
+        self.vapi.sw_interface_add_del_address(
+            sw_if_index=r.sw_if_index, prefix="10.0.0.1/24")
+
+        pkt = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") /
+               IP(src='10.0.0.2', dst='10.0.0.1') /
+               ICMP())
+
+        encap = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                 UDP(sport=6081, dport=6081, chksum=0) /
+                 GENEVE(vni=vni))
+
+        arp = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") /
+               ARP(op="is-at", hwsrc=self.pg0.remote_mac,
+                   hwdst="d0:0b:ee:d0:00:00", psrc="10.0.0.2",
+                   pdst="10.0.0.1"))
+
+        rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0)
+        rx = self.send_and_assert_no_replies(self.pg0, encap/arp*1, self.pg0)
+        rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0)
+        self.assertEqual(rx[0][ICMP].type, 0)  # echo reply
+
+        r = self.vapi.geneve_add_del_tunnel2(
+            is_add=0,
+            local_address=self.pg0.local_ip4,
+            remote_address=self.pg0.remote_ip4,
+            vni=vni)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_gre.py b/test/test_gre.py
new file mode 100644
index 0000000..ba20ba8
--- /dev/null
+++ b/test/test_gre.py
@@ -0,0 +1,1296 @@
+#!/usr/bin/env python3
+
+import unittest
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q, GRE
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+from scapy.volatile import RandMAC, RandIP
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
+from vpp_gre_interface import VppGreInterface
+from vpp_teib import VppTeib
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, FibPathProto, \
+    VppMplsLabel
+from vpp_mpls_tunnel_interface import VppMPLSTunnelInterface
+from util import ppp, ppc
+from vpp_papi import VppEnum
+
+
+@tag_fixme_vpp_workers
+class TestGREInputNodes(VppTestCase):
+    """ GRE Input Nodes Test Case """
+
+    def setUp(self):
+        super(TestGREInputNodes, self).setUp()
+
+        # create 3 pg interfaces - set one in a non-default table.
+        self.create_pg_interfaces(range(1))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.admin_down()
+        super(TestGREInputNodes, self).tearDown()
+
+    def test_gre_input_node(self):
+        """ GRE gre input nodes not registerd unless configured """
+        pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+               GRE())
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+        # no tunnel created, gre-input not registered
+        err = self.statistics.get_counter(
+            '/err/ip4-local/unknown ip protocol')[0]
+        self.assertEqual(err, 1)
+        err_count = err
+
+        # create gre tunnel
+        gre_if = VppGreInterface(self, self.pg0.local_ip4, "1.1.1.2")
+        gre_if.add_vpp_config()
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+        # tunnel created, gre-input registered
+        err = self.statistics.get_counter(
+            '/err/ip4-local/unknown ip protocol')[0]
+        # expect no new errors
+        self.assertEqual(err, err_count)
+
+
+class TestGRE(VppTestCase):
+    """ GRE Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestGRE, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestGRE, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestGRE, self).setUp()
+
+        # create 3 pg interfaces - set one in a non-default table.
+        self.create_pg_interfaces(range(5))
+
+        self.tbl = VppIpTable(self, 1)
+        self.tbl.add_vpp_config()
+        self.pg1.set_table_ip4(1)
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+        self.pg1.config_ip4()
+        self.pg1.resolve_arp()
+        self.pg2.config_ip6()
+        self.pg2.resolve_ndp()
+        self.pg3.config_ip4()
+        self.pg3.resolve_arp()
+        self.pg4.config_ip4()
+        self.pg4.resolve_arp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        self.pg1.set_table_ip4(0)
+        super(TestGRE, self).tearDown()
+
+    def create_stream_ip4(self, src_if, src_ip, dst_ip, dscp=0, ecn=0):
+        pkts = []
+        tos = (dscp << 2) | ecn
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=src_ip, dst=dst_ip, tos=tos) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_stream_ip6(self, src_if, src_ip, dst_ip, dscp=0, ecn=0):
+        pkts = []
+        tc = (dscp << 2) | ecn
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IPv6(src=src_ip, dst=dst_ip, tc=tc) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_tunnel_stream_4o4(self, src_if,
+                                 tunnel_src, tunnel_dst,
+                                 src_ip, dst_ip):
+        pkts = []
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=tunnel_src, dst=tunnel_dst) /
+                 GRE() /
+                 IP(src=src_ip, dst=dst_ip) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_tunnel_stream_6o4(self, src_if,
+                                 tunnel_src, tunnel_dst,
+                                 src_ip, dst_ip):
+        pkts = []
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=tunnel_src, dst=tunnel_dst) /
+                 GRE() /
+                 IPv6(src=src_ip, dst=dst_ip) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_tunnel_stream_6o6(self, src_if,
+                                 tunnel_src, tunnel_dst,
+                                 src_ip, dst_ip):
+        pkts = []
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IPv6(src=tunnel_src, dst=tunnel_dst) /
+                 GRE() /
+                 IPv6(src=src_ip, dst=dst_ip) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_tunnel_stream_l2o4(self, src_if,
+                                  tunnel_src, tunnel_dst):
+        pkts = []
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=tunnel_src, dst=tunnel_dst) /
+                 GRE() /
+                 Ether(dst=RandMAC('*:*:*:*:*:*'),
+                       src=RandMAC('*:*:*:*:*:*')) /
+                 IP(src=scapy.compat.raw(RandIP()),
+                    dst=scapy.compat.raw(RandIP())) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def create_tunnel_stream_vlano4(self, src_if,
+                                    tunnel_src, tunnel_dst, vlan):
+        pkts = []
+        for i in range(0, 257):
+            info = self.create_packet_info(src_if, src_if)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=tunnel_src, dst=tunnel_dst) /
+                 GRE() /
+                 Ether(dst=RandMAC('*:*:*:*:*:*'),
+                       src=RandMAC('*:*:*:*:*:*')) /
+                 Dot1Q(vlan=vlan) /
+                 IP(src=scapy.compat.raw(RandIP()),
+                    dst=scapy.compat.raw(RandIP())) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            pkts.append(p)
+        return pkts
+
+    def verify_tunneled_4o4(self, src_if, capture, sent,
+                            tunnel_src, tunnel_dst,
+                            dscp=0, ecn=0):
+
+        self.assertEqual(len(capture), len(sent))
+        tos = (dscp << 2) | ecn
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+                self.assertEqual(rx_ip.tos, tos)
+                self.assertEqual(rx_ip.len, len(rx_ip))
+
+                rx_gre = rx[GRE]
+                rx_ip = rx_gre[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                # IP processing post pop has decremented the TTL
+                self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_tunneled_6o6(self, src_if, capture, sent,
+                            tunnel_src, tunnel_dst,
+                            dscp=0, ecn=0):
+
+        self.assertEqual(len(capture), len(sent))
+        tc = (dscp << 2) | ecn
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IPv6]
+                rx_ip = rx[IPv6]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+                self.assertEqual(rx_ip.tc, tc)
+
+                rx_gre = GRE(scapy.compat.raw(rx_ip[IPv6].payload))
+
+                self.assertEqual(rx_ip.plen, len(rx_gre))
+
+                rx_ip = rx_gre[IPv6]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_tunneled_4o6(self, src_if, capture, sent,
+                            tunnel_src, tunnel_dst):
+
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                rx_ip = rx[IPv6]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+
+                rx_gre = GRE(scapy.compat.raw(rx_ip[IPv6].payload))
+
+                self.assertEqual(rx_ip.plen, len(rx_gre))
+
+                tx_ip = tx[IP]
+                rx_ip = rx_gre[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_tunneled_6o4(self, src_if, capture, sent,
+                            tunnel_src, tunnel_dst):
+
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+                self.assertEqual(rx_ip.len, len(rx_ip))
+
+                rx_gre = GRE(scapy.compat.raw(rx_ip[IP].payload))
+                rx_ip = rx_gre[IPv6]
+                tx_ip = tx[IPv6]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_tunneled_l2o4(self, src_if, capture, sent,
+                             tunnel_src, tunnel_dst):
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+                self.assertEqual(rx_ip.len, len(rx_ip))
+
+                rx_gre = rx[GRE]
+                rx_l2 = rx_gre[Ether]
+                rx_ip = rx_l2[IP]
+                tx_gre = tx[GRE]
+                tx_l2 = tx_gre[Ether]
+                tx_ip = tx_l2[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                # bridged, not L3 forwarded, so no TTL decrement
+                self.assertEqual(rx_ip.ttl, tx_ip.ttl)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_tunneled_vlano4(self, src_if, capture, sent,
+                               tunnel_src, tunnel_dst, vlan):
+        try:
+            self.assertEqual(len(capture), len(sent))
+        except:
+            ppc("Unexpected packets captured:", capture)
+            raise
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tunnel_src)
+                self.assertEqual(rx_ip.dst, tunnel_dst)
+
+                rx_gre = rx[GRE]
+                rx_l2 = rx_gre[Ether]
+                rx_vlan = rx_l2[Dot1Q]
+                rx_ip = rx_l2[IP]
+
+                self.assertEqual(rx_vlan.vlan, vlan)
+
+                tx_gre = tx[GRE]
+                tx_l2 = tx_gre[Ether]
+                tx_ip = tx_l2[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                # bridged, not L3 forwarded, so no TTL decrement
+                self.assertEqual(rx_ip.ttl, tx_ip.ttl)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_decapped_4o4(self, src_if, capture, sent):
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+                tx_gre = tx[GRE]
+                tx_ip = tx_gre[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                # IP processing post pop has decremented the TTL
+                self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_decapped_6o4(self, src_if, capture, sent):
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IPv6]
+                tx_gre = tx[GRE]
+                tx_ip = tx_gre[IPv6]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_decapped_6o6(self, src_if, capture, sent):
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IPv6]
+                rx_ip = rx[IPv6]
+                tx_gre = tx[GRE]
+                tx_ip = tx_gre[IPv6]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+                self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def test_gre(self):
+        """ GRE IPv4 tunnel Tests """
+
+        #
+        # Create an L3 GRE tunnel.
+        #  - set it admin up
+        #  - assign an IP Addres
+        #  - Add a route via the tunnel
+        #
+        gre_if = VppGreInterface(self,
+                                 self.pg0.local_ip4,
+                                 "1.1.1.2")
+        gre_if.add_vpp_config()
+
+        #
+        # The double create (create the same tunnel twice) should fail,
+        # and we should still be able to use the original
+        #
+        try:
+            gre_if.add_vpp_config()
+        except Exception:
+            pass
+        else:
+            self.fail("Double GRE tunnel add does not fail")
+
+        gre_if.admin_up()
+        gre_if.config_ip4()
+
+        route_via_tun = VppIpRoute(self, "4.4.4.4", 32,
+                                   [VppRoutePath("0.0.0.0",
+                                                 gre_if.sw_if_index)])
+
+        route_via_tun.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the tunnel
+        #  - they are all dropped since the tunnel's destintation IP
+        #    is unresolved - or resolves via the default route - which
+        #    which is a drop.
+        #
+        tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4")
+
+        self.send_and_assert_no_replies(self.pg0, tx)
+
+        #
+        # Add a route that resolves the tunnel's destination
+        #
+        route_tun_dst = VppIpRoute(self, "1.1.1.2", 32,
+                                   [VppRoutePath(self.pg0.remote_ip4,
+                                                 self.pg0.sw_if_index)])
+        route_tun_dst.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the tunnel
+        #  - packets are GRE encapped
+        #
+        tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4")
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_4o4(self.pg0, rx, tx,
+                                 self.pg0.local_ip4, "1.1.1.2")
+
+        #
+        # Send tunneled packets that match the created tunnel and
+        # are decapped and forwarded
+        #
+        tx = self.create_tunnel_stream_4o4(self.pg0,
+                                           "1.1.1.2",
+                                           self.pg0.local_ip4,
+                                           self.pg0.local_ip4,
+                                           self.pg0.remote_ip4)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_decapped_4o4(self.pg0, rx, tx)
+
+        #
+        # Send tunneled packets that do not match the tunnel's src
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_tunnel_stream_4o4(self.pg0,
+                                           "1.1.1.3",
+                                           self.pg0.local_ip4,
+                                           self.pg0.local_ip4,
+                                           self.pg0.remote_ip4)
+        self.send_and_assert_no_replies(
+            self.pg0, tx,
+            remark="GRE packets forwarded despite no SRC address match")
+
+        #
+        # Configure IPv6 on the PG interface so we can route IPv6
+        # packets
+        #
+        self.pg0.config_ip6()
+        self.pg0.resolve_ndp()
+
+        #
+        # Send IPv6 tunnel encapslated packets
+        #  - dropped since IPv6 is not enabled on the tunnel
+        #
+        tx = self.create_tunnel_stream_6o4(self.pg0,
+                                           "1.1.1.2",
+                                           self.pg0.local_ip4,
+                                           self.pg0.local_ip6,
+                                           self.pg0.remote_ip6)
+        self.send_and_assert_no_replies(self.pg0, tx,
+                                        "IPv6 GRE packets forwarded "
+                                        "despite IPv6 not enabled on tunnel")
+
+        #
+        # Enable IPv6 on the tunnel
+        #
+        gre_if.config_ip6()
+
+        #
+        # Send IPv6 tunnel encapslated packets
+        #  - forwarded since IPv6 is enabled on the tunnel
+        #
+        tx = self.create_tunnel_stream_6o4(self.pg0,
+                                           "1.1.1.2",
+                                           self.pg0.local_ip4,
+                                           self.pg0.local_ip6,
+                                           self.pg0.remote_ip6)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_decapped_6o4(self.pg0, rx, tx)
+
+        #
+        # Send v6 packets for v4 encap
+        #
+        route6_via_tun = VppIpRoute(
+            self, "2001::1", 128,
+            [VppRoutePath("::",
+                          gre_if.sw_if_index,
+                          proto=DpoProto.DPO_PROTO_IP6)])
+        route6_via_tun.add_vpp_config()
+
+        tx = self.create_stream_ip6(self.pg0, "2001::2", "2001::1")
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+
+        self.verify_tunneled_6o4(self.pg0, rx, tx,
+                                 self.pg0.local_ip4, "1.1.1.2")
+
+        #
+        # add a labelled route through the tunnel
+        #
+        label_via_tun = VppIpRoute(self, "5.4.3.2", 32,
+                                   [VppRoutePath("0.0.0.0",
+                                                 gre_if.sw_if_index,
+                                                 labels=[VppMplsLabel(33)])])
+        label_via_tun.add_vpp_config()
+
+        tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "5.4.3.2")
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_4o4(self.pg0, rx, tx,
+                                 self.pg0.local_ip4, "1.1.1.2")
+
+        #
+        # an MPLS tunnel over the GRE tunnel add a route through
+        # the mpls tunnel
+        #
+        mpls_tun = VppMPLSTunnelInterface(
+            self,
+            [VppRoutePath("0.0.0.0",
+                          gre_if.sw_if_index,
+                          labels=[VppMplsLabel(44),
+                                  VppMplsLabel(46)])])
+        mpls_tun.add_vpp_config()
+        mpls_tun.admin_up()
+
+        label_via_mpls = VppIpRoute(self, "5.4.3.1", 32,
+                                    [VppRoutePath("0.0.0.0",
+                                                  mpls_tun.sw_if_index,
+                                                  labels=[VppMplsLabel(33)])])
+        label_via_mpls.add_vpp_config()
+
+        tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "5.4.3.1")
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_4o4(self.pg0, rx, tx,
+                                 self.pg0.local_ip4, "1.1.1.2")
+
+        mpls_tun_l2 = VppMPLSTunnelInterface(
+            self,
+            [VppRoutePath("0.0.0.0",
+                          gre_if.sw_if_index,
+                          labels=[VppMplsLabel(44),
+                                  VppMplsLabel(46)])],
+            is_l2=1)
+        mpls_tun_l2.add_vpp_config()
+        mpls_tun_l2.admin_up()
+
+        #
+        # test case cleanup
+        #
+        route_tun_dst.remove_vpp_config()
+        route_via_tun.remove_vpp_config()
+        route6_via_tun.remove_vpp_config()
+        label_via_mpls.remove_vpp_config()
+        label_via_tun.remove_vpp_config()
+        mpls_tun.remove_vpp_config()
+        mpls_tun_l2.remove_vpp_config()
+        gre_if.remove_vpp_config()
+
+        self.pg0.unconfig_ip6()
+
+    def test_gre6(self):
+        """ GRE IPv6 tunnel Tests """
+
+        self.pg1.config_ip6()
+        self.pg1.resolve_ndp()
+
+        #
+        # Create an L3 GRE tunnel.
+        #  - set it admin up
+        #  - assign an IP Address
+        #  - Add a route via the tunnel
+        #
+        gre_if = VppGreInterface(self,
+                                 self.pg2.local_ip6,
+                                 "1002::1")
+        gre_if.add_vpp_config()
+        gre_if.admin_up()
+        gre_if.config_ip6()
+
+        route_via_tun = VppIpRoute(self, "4004::1", 128,
+                                   [VppRoutePath("0::0",
+                                                 gre_if.sw_if_index)])
+
+        route_via_tun.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the tunnel
+        #  - they are all dropped since the tunnel's destintation IP
+        #    is unresolved - or resolves via the default route - which
+        #    which is a drop.
+        #
+        tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1")
+        self.send_and_assert_no_replies(
+            self.pg2, tx,
+            "GRE packets forwarded without DIP resolved")
+
+        #
+        # Add a route that resolves the tunnel's destination
+        #
+        route_tun_dst = VppIpRoute(self, "1002::1", 128,
+                                   [VppRoutePath(self.pg2.remote_ip6,
+                                                 self.pg2.sw_if_index)])
+        route_tun_dst.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the tunnel
+        #  - packets are GRE encapped
+        #
+        tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1")
+        rx = self.send_and_expect(self.pg2, tx, self.pg2)
+        self.verify_tunneled_6o6(self.pg2, rx, tx,
+                                 self.pg2.local_ip6, "1002::1")
+
+        #
+        # Test decap. decapped packets go out pg1
+        #
+        tx = self.create_tunnel_stream_6o6(self.pg2,
+                                           "1002::1",
+                                           self.pg2.local_ip6,
+                                           "2001::1",
+                                           self.pg1.remote_ip6)
+        rx = self.send_and_expect(self.pg2, tx, self.pg1)
+
+        #
+        # RX'd packet is UDP over IPv6, test the GRE header is gone.
+        #
+        self.assertFalse(rx[0].haslayer(GRE))
+        self.assertEqual(rx[0][IPv6].dst, self.pg1.remote_ip6)
+
+        #
+        # Send v4 over v6
+        #
+        route4_via_tun = VppIpRoute(self, "1.1.1.1", 32,
+                                    [VppRoutePath("0.0.0.0",
+                                                  gre_if.sw_if_index)])
+        route4_via_tun.add_vpp_config()
+
+        tx = self.create_stream_ip4(self.pg0, "1.1.1.2", "1.1.1.1")
+        rx = self.send_and_expect(self.pg0, tx, self.pg2)
+
+        self.verify_tunneled_4o6(self.pg0, rx, tx,
+                                 self.pg2.local_ip6, "1002::1")
+
+        #
+        # test case cleanup
+        #
+        route_tun_dst.remove_vpp_config()
+        route_via_tun.remove_vpp_config()
+        route4_via_tun.remove_vpp_config()
+        gre_if.remove_vpp_config()
+
+        self.pg2.unconfig_ip6()
+        self.pg1.unconfig_ip6()
+
+    def test_gre_vrf(self):
+        """ GRE tunnel VRF Tests """
+
+        e = VppEnum.vl_api_tunnel_encap_decap_flags_t
+
+        #
+        # Create an L3 GRE tunnel whose destination is in the non-default
+        # table. The underlay is thus non-default - the overlay is still
+        # the default.
+        #  - set it admin up
+        #  - assign an IP Addres
+        #
+        gre_if = VppGreInterface(
+            self, self.pg1.local_ip4,
+            "2.2.2.2",
+            outer_table_id=1,
+            flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP |
+                   e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
+
+        gre_if.add_vpp_config()
+        gre_if.admin_up()
+        gre_if.config_ip4()
+
+        #
+        # Add a route via the tunnel - in the overlay
+        #
+        route_via_tun = VppIpRoute(self, "9.9.9.9", 32,
+                                   [VppRoutePath("0.0.0.0",
+                                                 gre_if.sw_if_index)])
+        route_via_tun.add_vpp_config()
+
+        #
+        # Add a route that resolves the tunnel's destination - in the
+        # underlay table
+        #
+        route_tun_dst = VppIpRoute(self, "2.2.2.2", 32, table_id=1,
+                                   paths=[VppRoutePath(self.pg1.remote_ip4,
+                                                       self.pg1.sw_if_index)])
+        route_tun_dst.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the tunnel
+        # packets are sent in on pg0 which is in the default table
+        #  - packets are GRE encapped
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "9.9.9.9",
+                                    dscp=5, ecn=3)
+        rx = self.send_and_expect(self.pg0, tx, self.pg1)
+        self.verify_tunneled_4o4(self.pg1, rx, tx,
+                                 self.pg1.local_ip4, "2.2.2.2",
+                                 dscp=5, ecn=3)
+
+        #
+        # Send tunneled packets that match the created tunnel and
+        # are decapped and forwarded. This tests the decap lookup
+        # does not happen in the encap table
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_tunnel_stream_4o4(self.pg1,
+                                           "2.2.2.2",
+                                           self.pg1.local_ip4,
+                                           self.pg0.local_ip4,
+                                           self.pg0.remote_ip4)
+        rx = self.send_and_expect(self.pg1, tx, self.pg0)
+        self.verify_decapped_4o4(self.pg0, rx, tx)
+
+        #
+        # Send tunneled packets that match the created tunnel
+        # but arrive on an interface that is not in the tunnel's
+        # encap VRF, these are dropped.
+        # IP enable the interface so they aren't dropped due to
+        # IP not being enabled.
+        #
+        self.pg2.config_ip4()
+        self.vapi.cli("clear trace")
+        tx = self.create_tunnel_stream_4o4(self.pg2,
+                                           "2.2.2.2",
+                                           self.pg1.local_ip4,
+                                           self.pg0.local_ip4,
+                                           self.pg0.remote_ip4)
+        rx = self.send_and_assert_no_replies(
+            self.pg2, tx,
+            "GRE decap packets in wrong VRF")
+
+        self.pg2.unconfig_ip4()
+
+        #
+        # test case cleanup
+        #
+        route_tun_dst.remove_vpp_config()
+        route_via_tun.remove_vpp_config()
+        gre_if.remove_vpp_config()
+
+    def test_gre_l2(self):
+        """ GRE tunnel L2 Tests """
+
+        #
+        # Add routes to resolve the tunnel destinations
+        #
+        route_tun1_dst = VppIpRoute(self, "2.2.2.2", 32,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index)])
+        route_tun2_dst = VppIpRoute(self, "2.2.2.3", 32,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index)])
+
+        route_tun1_dst.add_vpp_config()
+        route_tun2_dst.add_vpp_config()
+
+        #
+        # Create 2 L2 GRE tunnels and x-connect them
+        #
+        gre_if1 = VppGreInterface(self, self.pg0.local_ip4,
+                                  "2.2.2.2",
+                                  type=(VppEnum.vl_api_gre_tunnel_type_t.
+                                        GRE_API_TUNNEL_TYPE_TEB))
+        gre_if2 = VppGreInterface(self, self.pg0.local_ip4,
+                                  "2.2.2.3",
+                                  type=(VppEnum.vl_api_gre_tunnel_type_t.
+                                        GRE_API_TUNNEL_TYPE_TEB))
+        gre_if1.add_vpp_config()
+        gre_if2.add_vpp_config()
+
+        gre_if1.admin_up()
+        gre_if2.admin_up()
+
+        self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index,
+                                               gre_if2.sw_if_index,
+                                               enable=1)
+        self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index,
+                                               gre_if1.sw_if_index,
+                                               enable=1)
+
+        #
+        # Send in tunnel encapped L2. expect out tunnel encapped L2
+        # in both directions
+        #
+        tx = self.create_tunnel_stream_l2o4(self.pg0,
+                                            "2.2.2.2",
+                                            self.pg0.local_ip4)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_l2o4(self.pg0, rx, tx,
+                                  self.pg0.local_ip4,
+                                  "2.2.2.3")
+
+        tx = self.create_tunnel_stream_l2o4(self.pg0,
+                                            "2.2.2.3",
+                                            self.pg0.local_ip4)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_l2o4(self.pg0, rx, tx,
+                                  self.pg0.local_ip4,
+                                  "2.2.2.2")
+
+        self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index,
+                                               gre_if2.sw_if_index,
+                                               enable=0)
+        self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index,
+                                               gre_if1.sw_if_index,
+                                               enable=0)
+
+        #
+        # Create a VLAN sub-interfaces on the GRE TEB interfaces
+        # then x-connect them
+        #
+        gre_if_11 = VppDot1QSubint(self, gre_if1, 11)
+        gre_if_12 = VppDot1QSubint(self, gre_if2, 12)
+
+        # gre_if_11.add_vpp_config()
+        # gre_if_12.add_vpp_config()
+
+        gre_if_11.admin_up()
+        gre_if_12.admin_up()
+
+        self.vapi.sw_interface_set_l2_xconnect(gre_if_11.sw_if_index,
+                                               gre_if_12.sw_if_index,
+                                               enable=1)
+        self.vapi.sw_interface_set_l2_xconnect(gre_if_12.sw_if_index,
+                                               gre_if_11.sw_if_index,
+                                               enable=1)
+
+        #
+        # Configure both to pop thier respective VLAN tags,
+        # so that during the x-coonect they will subsequently push
+        #
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=gre_if_12.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=12)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=gre_if_11.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=11)
+
+        #
+        # Send traffic in both directiond - expect the VLAN tags to
+        # be swapped.
+        #
+        tx = self.create_tunnel_stream_vlano4(self.pg0,
+                                              "2.2.2.2",
+                                              self.pg0.local_ip4,
+                                              11)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_vlano4(self.pg0, rx, tx,
+                                    self.pg0.local_ip4,
+                                    "2.2.2.3",
+                                    12)
+
+        tx = self.create_tunnel_stream_vlano4(self.pg0,
+                                              "2.2.2.3",
+                                              self.pg0.local_ip4,
+                                              12)
+        rx = self.send_and_expect(self.pg0, tx, self.pg0)
+        self.verify_tunneled_vlano4(self.pg0, rx, tx,
+                                    self.pg0.local_ip4,
+                                    "2.2.2.2",
+                                    11)
+
+        #
+        # Cleanup Test resources
+        #
+        gre_if_11.remove_vpp_config()
+        gre_if_12.remove_vpp_config()
+        gre_if1.remove_vpp_config()
+        gre_if2.remove_vpp_config()
+        route_tun1_dst.add_vpp_config()
+        route_tun2_dst.add_vpp_config()
+
+    def test_gre_loop(self):
+        """ GRE tunnel loop Tests """
+
+        #
+        # Create an L3 GRE tunnel.
+        #  - set it admin up
+        #  - assign an IP Addres
+        #
+        gre_if = VppGreInterface(self,
+                                 self.pg0.local_ip4,
+                                 "1.1.1.2")
+        gre_if.add_vpp_config()
+        gre_if.admin_up()
+        gre_if.config_ip4()
+
+        #
+        # add a route to the tunnel's destination that points
+        # through the tunnel, hence forming a loop in the forwarding
+        # graph
+        #
+        route_dst = VppIpRoute(self, "1.1.1.2", 32,
+                               [VppRoutePath("0.0.0.0",
+                                             gre_if.sw_if_index)])
+        route_dst.add_vpp_config()
+
+        #
+        # packets to the tunnels destination should be dropped
+        #
+        tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "1.1.1.2")
+        self.send_and_assert_no_replies(self.pg2, tx)
+
+        self.logger.info(self.vapi.ppcli("sh adj 7"))
+
+        #
+        # break the loop
+        #
+        route_dst.modify([VppRoutePath(self.pg1.remote_ip4,
+                                       self.pg1.sw_if_index)])
+        route_dst.add_vpp_config()
+
+        rx = self.send_and_expect(self.pg0, tx, self.pg1)
+
+        #
+        # a good route throught the tunnel to check it restacked
+        #
+        route_via_tun_2 = VppIpRoute(self, "2.2.2.2", 32,
+                                     [VppRoutePath("0.0.0.0",
+                                                   gre_if.sw_if_index)])
+        route_via_tun_2.add_vpp_config()
+
+        tx = self.create_stream_ip4(self.pg0, "2.2.2.3", "2.2.2.2")
+        rx = self.send_and_expect(self.pg0, tx, self.pg1)
+        self.verify_tunneled_4o4(self.pg1, rx, tx,
+                                 self.pg0.local_ip4, "1.1.1.2")
+
+        #
+        # cleanup
+        #
+        route_via_tun_2.remove_vpp_config()
+        gre_if.remove_vpp_config()
+
+    def test_mgre(self):
+        """ mGRE IPv4 tunnel Tests """
+
+        for itf in self.pg_interfaces[3:]:
+            #
+            # one underlay nh for each overlay/tunnel peer
+            #
+            itf.generate_remote_hosts(4)
+            itf.configure_ipv4_neighbors()
+
+            #
+            # Create an L3 GRE tunnel.
+            #  - set it admin up
+            #  - assign an IP Addres
+            #  - Add a route via the tunnel
+            #
+            gre_if = VppGreInterface(self,
+                                     itf.local_ip4,
+                                     "0.0.0.0",
+                                     mode=(VppEnum.vl_api_tunnel_mode_t.
+                                           TUNNEL_API_MODE_MP))
+            gre_if.add_vpp_config()
+            gre_if.admin_up()
+            gre_if.config_ip4()
+            gre_if.generate_remote_hosts(4)
+
+            self.logger.info(self.vapi.cli("sh adj"))
+            self.logger.info(self.vapi.cli("sh ip fib"))
+
+            #
+            # ensure we don't match to the tunnel if the source address
+            # is all zeros
+            #
+            tx = self.create_tunnel_stream_4o4(self.pg0,
+                                               "0.0.0.0",
+                                               itf.local_ip4,
+                                               self.pg0.local_ip4,
+                                               self.pg0.remote_ip4)
+            self.send_and_assert_no_replies(self.pg0, tx)
+
+            #
+            # for-each peer
+            #
+            for ii in range(1, 4):
+                route_addr = "4.4.4.%d" % ii
+                tx_e = self.create_stream_ip4(self.pg0, "5.5.5.5", route_addr)
+
+                #
+                # route traffic via the peer
+                #
+                route_via_tun = VppIpRoute(
+                    self, route_addr, 32,
+                    [VppRoutePath(gre_if._remote_hosts[ii].ip4,
+                                  gre_if.sw_if_index)])
+                route_via_tun.add_vpp_config()
+
+                # all packets dropped at this point
+                rx = self.send_and_assert_no_replies(self.pg0, tx_e)
+
+                gre_if.admin_down()
+                gre_if.admin_up()
+                rx = self.send_and_assert_no_replies(self.pg0, tx_e)
+
+                #
+                # Add a TEIB entry resolves the peer
+                #
+                teib = VppTeib(self, gre_if,
+                               gre_if._remote_hosts[ii].ip4,
+                               itf._remote_hosts[ii].ip4)
+                teib.add_vpp_config()
+
+                #
+                # Send a packet stream that is routed into the tunnel
+                #  - packets are GRE encapped
+                #
+                rx = self.send_and_expect(self.pg0, tx_e, itf)
+                self.verify_tunneled_4o4(self.pg0, rx, tx_e,
+                                         itf.local_ip4,
+                                         itf._remote_hosts[ii].ip4)
+
+                tx_i = self.create_tunnel_stream_4o4(self.pg0,
+                                                     itf._remote_hosts[ii].ip4,
+                                                     itf.local_ip4,
+                                                     self.pg0.local_ip4,
+                                                     self.pg0.remote_ip4)
+                rx = self.send_and_expect(self.pg0, tx_i, self.pg0)
+                self.verify_decapped_4o4(self.pg0, rx, tx_i)
+
+                #
+                # delete and re-add the TEIB
+                #
+                teib.remove_vpp_config()
+                self.send_and_assert_no_replies(self.pg0, tx_e)
+                self.send_and_assert_no_replies(self.pg0, tx_i)
+
+                teib.add_vpp_config()
+                rx = self.send_and_expect(self.pg0, tx_e, itf)
+                self.verify_tunneled_4o4(self.pg0, rx, tx_e,
+                                         itf.local_ip4,
+                                         itf._remote_hosts[ii].ip4)
+                rx = self.send_and_expect(self.pg0, tx_i, self.pg0)
+                self.verify_decapped_4o4(self.pg0, rx, tx_i)
+
+                #
+                # bounce the interface state and try packets again
+                #
+                gre_if.admin_down()
+                gre_if.admin_up()
+                rx = self.send_and_expect(self.pg0, tx_e, itf)
+                self.verify_tunneled_4o4(self.pg0, rx, tx_e,
+                                         itf.local_ip4,
+                                         itf._remote_hosts[ii].ip4)
+                rx = self.send_and_expect(self.pg0, tx_i, self.pg0)
+                self.verify_decapped_4o4(self.pg0, rx, tx_i)
+
+            gre_if.admin_down()
+            gre_if.unconfig_ip4()
+
+    def test_mgre6(self):
+        """ mGRE IPv6 tunnel Tests """
+
+        self.pg0.config_ip6()
+        self.pg0.resolve_ndp()
+
+        e = VppEnum.vl_api_tunnel_encap_decap_flags_t
+
+        for itf in self.pg_interfaces[3:]:
+            #
+            # one underlay nh for each overlay/tunnel peer
+            #
+            itf.config_ip6()
+            itf.generate_remote_hosts(4)
+            itf.configure_ipv6_neighbors()
+
+            #
+            # Create an L3 GRE tunnel.
+            #  - set it admin up
+            #  - assign an IP Addres
+            #  - Add a route via the tunnel
+            #
+            gre_if = VppGreInterface(
+                self,
+                itf.local_ip6,
+                "::",
+                mode=(VppEnum.vl_api_tunnel_mode_t.
+                      TUNNEL_API_MODE_MP),
+                flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+
+            gre_if.add_vpp_config()
+            gre_if.admin_up()
+            gre_if.config_ip6()
+            gre_if.generate_remote_hosts(4)
+
+            #
+            # for-each peer
+            #
+            for ii in range(1, 4):
+                route_addr = "4::%d" % ii
+
+                #
+                # Add a TEIB entry resolves the peer
+                #
+                teib = VppTeib(self, gre_if,
+                               gre_if._remote_hosts[ii].ip6,
+                               itf._remote_hosts[ii].ip6)
+                teib.add_vpp_config()
+
+                #
+                # route traffic via the peer
+                #
+                route_via_tun = VppIpRoute(
+                    self, route_addr, 128,
+                    [VppRoutePath(gre_if._remote_hosts[ii].ip6,
+                                  gre_if.sw_if_index)])
+                route_via_tun.add_vpp_config()
+
+                #
+                # Send a packet stream that is routed into the tunnel
+                #  - packets are GRE encapped
+                #
+                tx_e = self.create_stream_ip6(self.pg0, "5::5", route_addr,
+                                              dscp=2, ecn=1)
+                rx = self.send_and_expect(self.pg0, tx_e, itf)
+                self.verify_tunneled_6o6(self.pg0, rx, tx_e,
+                                         itf.local_ip6,
+                                         itf._remote_hosts[ii].ip6,
+                                         dscp=2)
+                tx_i = self.create_tunnel_stream_6o6(self.pg0,
+                                                     itf._remote_hosts[ii].ip6,
+                                                     itf.local_ip6,
+                                                     self.pg0.local_ip6,
+                                                     self.pg0.remote_ip6)
+                rx = self.send_and_expect(self.pg0, tx_i, self.pg0)
+                self.verify_decapped_6o6(self.pg0, rx, tx_i)
+
+                #
+                # delete and re-add the TEIB
+                #
+                teib.remove_vpp_config()
+                self.send_and_assert_no_replies(self.pg0, tx_e)
+
+                teib.add_vpp_config()
+                rx = self.send_and_expect(self.pg0, tx_e, itf)
+                self.verify_tunneled_6o6(self.pg0, rx, tx_e,
+                                         itf.local_ip6,
+                                         itf._remote_hosts[ii].ip6,
+                                         dscp=2)
+                rx = self.send_and_expect(self.pg0, tx_i, self.pg0)
+                self.verify_decapped_6o6(self.pg0, rx, tx_i)
+
+            gre_if.admin_down()
+            gre_if.unconfig_ip4()
+            itf.unconfig_ip6()
+        self.pg0.unconfig_ip6()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_gro.py b/test/test_gro.py
new file mode 100644
index 0000000..33215d6
--- /dev/null
+++ b/test/test_gro.py
@@ -0,0 +1,142 @@
+#!/usr/bin/env python3
+"""GRO functional tests"""
+
+#
+# Add tests for:
+# - GRO
+# - Verify that sending 1500 Bytes frame without GRO enabled correctly
+# - Verify that sending 1500 Bytes frame with GRO enabled correctly
+#
+import unittest
+
+from scapy.packet import Raw
+from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
+from scapy.layers.inet6 import ipv6nh, IPerror6
+from scapy.layers.inet import TCP, ICMP
+from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
+
+from framework import VppTestCase, VppTestRunner
+from vpp_object import VppObject
+from vpp_interface import VppInterface
+
+
+""" Test_gro is a subclass of VPPTestCase classes.
+    GRO tests.
+"""
+
+
+class TestGRO(VppTestCase):
+    """ GRO Test Case """
+
+    @classmethod
+    def setUpClass(self):
+        super(TestGRO, self).setUpClass()
+        res = self.create_pg_interfaces(range(2))
+        res_gro = self.create_pg_interfaces(range(2, 3), 1, 1460)
+        self.create_pg_interfaces(range(3, 4), 1, 8940)
+        self.pg_interfaces.append(res[0])
+        self.pg_interfaces.append(res[1])
+        self.pg_interfaces.append(res_gro[0])
+        self.pg2.coalesce_enable()
+        self.pg3.coalesce_enable()
+
+    @classmethod
+    def tearDownClass(self):
+        super(TestGRO, self).tearDownClass()
+
+    def setUp(self):
+        super(TestGRO, self).setUp()
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.config_ip6()
+            i.disable_ipv6_ra()
+            i.resolve_arp()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestGRO, self).tearDown()
+        if not self.vpp_dead:
+            for i in self.pg_interfaces:
+                i.unconfig_ip4()
+                i.unconfig_ip6()
+                i.admin_down()
+
+    def test_gro(self):
+        """ GRO test """
+
+        n_packets = 124
+        #
+        # Send 1500 bytes frame with gro disabled
+        #
+        p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+              IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4,
+                 flags='DF') /
+              TCP(sport=1234, dport=4321) /
+              Raw(b'\xa5' * 1460))
+
+        rxs = self.send_and_expect(self.pg0, n_packets * p4, self.pg1)
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 4321)
+
+        #
+        # Send 1500 bytes frame with gro enabled on
+        # output interfaces support GRO
+        #
+        p = []
+        s = 0
+        for n in range(0, n_packets):
+            p.append((Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                      IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4,
+                         flags='DF') /
+                      TCP(sport=1234, dport=4321, seq=s, ack=n, flags='A') /
+                      Raw(b'\xa5' * 1460)))
+            s += 1460
+
+        rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=2)
+
+        i = 0
+        for rx in rxs:
+            i += 1
+            self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].len, 64280)  # 1460 * 44 + 40 < 65536
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 4321)
+            self.assertEqual(rx[TCP].ack, (44*i - 1))
+
+        p4_temp = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+                   IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
+                      flags='DF') /
+                   TCP(sport=1234, dport=4321, flags='F'))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p4_temp], self.pg0, n_rx=100)
+        rx_coalesce = self.pg2.get_capture(1, timeout=1)
+
+        rx0 = rx_coalesce[0]
+        self.assertEqual(rx0[Ether].src, self.pg2.local_mac)
+        self.assertEqual(rx0[Ether].dst, self.pg2.remote_mac)
+        self.assertEqual(rx0[IP].src, self.pg0.remote_ip4)
+        self.assertEqual(rx0[IP].dst, self.pg2.remote_ip4)
+        self.assertEqual(rx0[IP].len, 52600)  # 1460 * 36 + 40
+        self.assertEqual(rx0[TCP].sport, 1234)
+        self.assertEqual(rx0[TCP].dport, 4321)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].len, 40)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 4321)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_gso.py b/test/test_gso.py
new file mode 100644
index 0000000..094600e
--- /dev/null
+++ b/test/test_gso.py
@@ -0,0 +1,722 @@
+#!/usr/bin/env python3
+"""GSO functional tests"""
+
+#
+# Add tests for:
+# - GSO
+# - Verify that sending Jumbo frame without GSO enabled correctly
+# - Verify that sending Jumbo frame with GSO enabled correctly
+# - Verify that sending Jumbo frame with GSO enabled only on ingress interface
+#
+import unittest
+
+from scapy.packet import Raw
+from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
+from scapy.layers.inet6 import ipv6nh, IPerror6
+from scapy.layers.inet import TCP, ICMP
+from scapy.layers.vxlan import VXLAN
+from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
+
+from framework import VppTestCase, VppTestRunner
+from vpp_object import VppObject
+from vpp_interface import VppInterface
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto
+from vpp_ipip_tun_interface import VppIpIpTunInterface
+from vpp_vxlan_tunnel import VppVxlanTunnel
+from socket import AF_INET, AF_INET6, inet_pton
+from util import reassemble4
+
+
+""" Test_gso is a subclass of VPPTestCase classes.
+    GSO tests.
+"""
+
+
+class TestGSO(VppTestCase):
+    """ GSO Test Case """
+
+    def __init__(self, *args):
+        VppTestCase.__init__(self, *args)
+
+    @classmethod
+    def setUpClass(self):
+        super(TestGSO, self).setUpClass()
+        res = self.create_pg_interfaces(range(2))
+        res_gso = self.create_pg_interfaces(range(2, 4), 1, 1460)
+        self.create_pg_interfaces(range(4, 5), 1, 8940)
+        self.pg_interfaces.append(res[0])
+        self.pg_interfaces.append(res[1])
+        self.pg_interfaces.append(res_gso[0])
+        self.pg_interfaces.append(res_gso[1])
+
+    @classmethod
+    def tearDownClass(self):
+        super(TestGSO, self).tearDownClass()
+
+    def setUp(self):
+        super(TestGSO, self).setUp()
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.config_ip6()
+            i.disable_ipv6_ra()
+            i.resolve_arp()
+            i.resolve_ndp()
+
+        self.single_tunnel_bd = 10
+        self.vxlan = VppVxlanTunnel(self, src=self.pg0.local_ip4,
+                                    dst=self.pg0.remote_ip4,
+                                    vni=self.single_tunnel_bd)
+
+        self.vxlan2 = VppVxlanTunnel(self, src=self.pg0.local_ip6,
+                                     dst=self.pg0.remote_ip6,
+                                     vni=self.single_tunnel_bd)
+
+        self.ipip4 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip4,
+                                         self.pg0.remote_ip4)
+        self.ipip6 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip6,
+                                         self.pg0.remote_ip6)
+
+    def tearDown(self):
+        super(TestGSO, self).tearDown()
+        if not self.vpp_dead:
+            for i in self.pg_interfaces:
+                i.unconfig_ip4()
+                i.unconfig_ip6()
+                i.admin_down()
+
+    def test_gso(self):
+        """ GSO test """
+        #
+        # Send jumbo frame with gso disabled and DF bit is set
+        #
+        p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+              IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4,
+                 flags='DF') /
+              TCP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg0, [p4], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[ICMP].type, 3)  # "dest-unreach"
+            self.assertEqual(rx[ICMP].code, 4)  # "fragmentation-needed"
+
+        #
+        # Send checksum offload frames
+        #
+        p40 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 1460))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p40], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+
+        p60 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 1440))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p60], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+
+        #
+        # Send jumbo frame with gso enabled and DF bit is set
+        # input and output interfaces support GSO
+        #
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg3.sw_if_index,
+                                             enable_disable=1)
+        p41 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p41], self.pg3, 100)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg3.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg3.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(rx[IP].len, 65240)  # 65200 + 20 (IP) + 20 (TCP)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+
+        #
+        # ipv6
+        #
+        p61 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg3.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p61], self.pg3, 100)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg3.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg3.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg3.remote_ip6)
+            self.assertEqual(rx[IPv6].plen, 65220)  # 65200 + 20 (TCP)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface
+        # and DF bit is set. GSO packet will be chunked into gso_size
+        # data payload
+        #
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=1)
+        p42 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p42], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20  # len - 20 (IP4) - 20 (TCP)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # ipv6
+        #
+        p62 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p62], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface
+        # and DF bit is unset. GSO packet will be fragmented.
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [576, 0, 0, 0])
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg1.sw_if_index,
+                                             enable_disable=1)
+
+        p43 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg1.remote_ip4) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p43], self.pg1, 5*119)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            size += rx[IP].len - 20
+        size -= 20*5  # TCP header
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6
+        # Send jumbo frame with gso enabled only on input interface.
+        # ICMPv6 Packet Too Big will be sent back to sender.
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0])
+        p63 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg1.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p63], self.pg2, 5)
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].plen, 1240)  # MTU - IPv6 header
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "ICMPv6")
+            self.assertEqual(rx[ICMPv6PacketTooBig].mtu, 1280)
+            self.assertEqual(rx[IPerror6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPerror6].dst, self.pg1.remote_ip6)
+            self.assertEqual(rx[IPerror6].plen - 20, 65200)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface with 9K MTU
+        # and DF bit is unset. GSO packet will be fragmented. MSS is 8960. GSO
+        # size will be min(MSS, 2048 - 14 - 20) vlib_buffer_t size
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0])
+        self.vapi.sw_interface_set_mtu(self.pg4.sw_if_index, [9000, 0, 0, 0])
+        p44 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+               IP(src=self.pg4.remote_ip4, dst=self.pg1.remote_ip4) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg4, 5*[p44], self.pg1, 165)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg4.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20  # len - 20 (IP4) - 20 (TCP)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6
+        #
+        p64 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+               IPv6(src=self.pg4.remote_ip6, dst=self.pg1.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg4, 5*[p64], self.pg1, 170)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg4.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg1.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=0)
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg1.sw_if_index,
+                                             enable_disable=0)
+
+    def test_gso_vxlan(self):
+        """ GSO VXLAN test """
+        self.logger.info(self.vapi.cli("sh int addr"))
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg2
+        # into BD.
+        #
+
+        #
+        # enable ipv4/vxlan
+        #
+        self.vxlan.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.vxlan.sw_if_index, bd_id=self.single_tunnel_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.single_tunnel_bd)
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=1)
+
+        #
+        # IPv4/IPv4 - VXLAN
+        #
+        p45 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p45], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.3.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv4/IPv6 - VXLAN
+        #
+        p65 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p65], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipv4/vxlan
+        #
+        self.vxlan.remove_vpp_config()
+
+        #
+        # enable ipv6/vxlan
+        #
+        self.vxlan2.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.vxlan2.sw_if_index,
+            bd_id=self.single_tunnel_bd)
+
+        #
+        # IPv6/IPv4 - VXLAN
+        #
+        p46 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p46], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IPv6].plen - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.3.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6/IPv6 - VXLAN
+        #
+        p66 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p66], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IPv6].plen - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipv4/vxlan
+        #
+        self.vxlan2.remove_vpp_config()
+
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=0)
+
+    def test_gso_ipip(self):
+        """ GSO IPIP test """
+        self.logger.info(self.vapi.cli("sh int addr"))
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create IPIP tunnel on VPP pg0.
+        #
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=1)
+
+        #
+        # enable ipip4
+        #
+        self.ipip4.add_vpp_config()
+
+        # Set interface up and enable IP on it
+        self.ipip4.admin_up()
+        self.ipip4.set_unnumbered(self.pg0.sw_if_index)
+
+        # Add IPv4 routes via tunnel interface
+        self.ip4_via_ip4_tunnel = VppIpRoute(
+                self, "172.16.10.0", 24,
+                [VppRoutePath("0.0.0.0",
+                              self.ipip4.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
+        self.ip4_via_ip4_tunnel.add_vpp_config()
+
+        #
+        # IPv4/IPv4 - IPIP
+        #
+        p47 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.10.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p47], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 4)  # ipencap
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.ip6_via_ip4_tunnel = VppIpRoute(
+                self, "fd01:10::", 64,
+                [VppRoutePath("::",
+                              self.ipip4.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
+        self.ip6_via_ip4_tunnel.add_vpp_config()
+        #
+        # IPv4/IPv6 - IPIP
+        #
+        p67 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:10::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p67], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 41)  # ipv6
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:10::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create IPIP tunnel on VPP pg0. Enable gso feature node on ipip
+        # tunnel - IPSec use case
+        #
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=0)
+        self.vapi.feature_gso_enable_disable(
+            sw_if_index=self.ipip4.sw_if_index,
+            enable_disable=1)
+
+        rxs = self.send_and_expect(self.pg2, 5*[p47], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 4)  # ipencap
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipip4
+        #
+        self.vapi.feature_gso_enable_disable(
+            sw_if_index=self.ipip4.sw_if_index,
+            enable_disable=0)
+        self.ip4_via_ip4_tunnel.remove_vpp_config()
+        self.ip6_via_ip4_tunnel.remove_vpp_config()
+        self.ipip4.remove_vpp_config()
+
+        #
+        # enable ipip6
+        #
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=1)
+        self.ipip6.add_vpp_config()
+
+        # Set interface up and enable IP on it
+        self.ipip6.admin_up()
+        self.ipip6.set_unnumbered(self.pg0.sw_if_index)
+
+        # Add IPv4 routes via tunnel interface
+        self.ip4_via_ip6_tunnel = VppIpRoute(
+                self, "172.16.10.0", 24,
+                [VppRoutePath("0.0.0.0",
+                              self.ipip6.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
+        self.ip4_via_ip6_tunnel.add_vpp_config()
+
+        #
+        # IPv6/IPv4 - IPIP
+        #
+        p48 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.10.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p48], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "IP")
+            inner = rx[IPv6].payload
+            self.assertEqual(rx[IPv6].plen, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.ip6_via_ip6_tunnel = VppIpRoute(
+                self, "fd01:10::", 64,
+                [VppRoutePath("::",
+                              self.ipip6.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
+        self.ip6_via_ip6_tunnel.add_vpp_config()
+
+        #
+        # IPv6/IPv6 - IPIP
+        #
+        p68 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:10::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p68], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "IPv6")
+            inner = rx[IPv6].payload
+            self.assertEqual(rx[IPv6].plen, len(inner))
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:10::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipip6
+        #
+        self.ip4_via_ip6_tunnel.remove_vpp_config()
+        self.ip6_via_ip6_tunnel.remove_vpp_config()
+        self.ipip6.remove_vpp_config()
+
+        self.vapi.feature_gso_enable_disable(sw_if_index=self.pg0.sw_if_index,
+                                             enable_disable=0)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_gtpu.py b/test/test_gtpu.py
new file mode 100644
index 0000000..791067c
--- /dev/null
+++ b/test/test_gtpu.py
@@ -0,0 +1,413 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range
+import unittest
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+from scapy.contrib.gtp import GTP_U_Header
+from scapy.utils import atol
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+
+@tag_fixme_vpp_workers
+class TestGtpuUDP(VppTestCase):
+    """ GTPU UDP ports Test Case """
+
+    def setUp(self):
+        super(TestGtpuUDP, self).setUp()
+
+        self.dport = 2152
+
+        self.ip4_err = 0
+        self.ip6_err = 0
+
+        self.create_pg_interfaces(range(1))
+        for pg in self.pg_interfaces:
+            pg.admin_up()
+        self.pg0.config_ip4()
+        self.pg0.config_ip6()
+
+    def _check_udp_port_ip4(self, enabled=True):
+
+        pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+               UDP(sport=self.dport, dport=self.dport, chksum=0))
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        err = self.statistics.get_counter(
+            '/err/ip4-udp-lookup/No listener for dst port')[0]
+
+        if enabled:
+            self.assertEqual(err, self.ip4_err)
+        else:
+            self.assertEqual(err, self.ip4_err + 1)
+
+        self.ip4_err = err
+
+    def _check_udp_port_ip6(self, enabled=True):
+
+        pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
+               IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
+               UDP(sport=self.dport, dport=self.dport, chksum=0))
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        err = self.statistics.get_counter(
+            '/err/ip6-udp-lookup/No listener for dst port')[0]
+
+        if enabled:
+            self.assertEqual(err, self.ip6_err)
+        else:
+            self.assertEqual(err, self.ip6_err + 1)
+
+        self.ip6_err = err
+
+    def test_udp_port(self):
+        """ test UDP ports
+        Check if there are no udp listeners before gtpu is enabled
+        """
+        # UDP ports should be disabled unless a tunnel is configured
+        self._check_udp_port_ip4(False)
+        self._check_udp_port_ip6(False)
+
+        r = self.vapi.gtpu_add_del_tunnel(is_add=True,
+                                          mcast_sw_if_index=0xFFFFFFFF,
+                                          decap_next_index=0xFFFFFFFF,
+                                          src_address=self.pg0.local_ip4,
+                                          dst_address=self.pg0.remote_ip4)
+
+        # UDP port 2152 enabled for ip4
+        self._check_udp_port_ip4()
+
+        r = self.vapi.gtpu_add_del_tunnel(is_add=True,
+                                          mcast_sw_if_index=0xFFFFFFFF,
+                                          decap_next_index=0xFFFFFFFF,
+                                          src_address=self.pg0.local_ip6,
+                                          dst_address=self.pg0.remote_ip6)
+
+        # UDP port 2152 enabled for ip6
+        self._check_udp_port_ip6()
+
+        r = self.vapi.gtpu_add_del_tunnel(is_add=False,
+                                          mcast_sw_if_index=0xFFFFFFFF,
+                                          decap_next_index=0xFFFFFFFF,
+                                          src_address=self.pg0.local_ip4,
+                                          dst_address=self.pg0.remote_ip4)
+
+        r = self.vapi.gtpu_add_del_tunnel(is_add=False,
+                                          mcast_sw_if_index=0xFFFFFFFF,
+                                          decap_next_index=0xFFFFFFFF,
+                                          src_address=self.pg0.local_ip6,
+                                          dst_address=self.pg0.remote_ip6)
+
+
+class TestGtpu(BridgeDomain, VppTestCase):
+    """ GTPU Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding GTPU header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                GTP_U_Header(teid=vni, gtp_type=self.gtp_type, length=150) /
+                pkt)
+
+    def ip_range(self, start, end):
+        """ range of remote ip's """
+        return ip4_range(self.pg0.remote_ip4, start, end)
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding GTPU header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IP(src=src_ip, dst=self.mcast_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                GTP_U_Header(teid=vni, gtp_type=self.gtp_type, length=150) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing GTPU header
+        """
+        return pkt[GTP_U_Header].payload
+
+    # Method for checking GTPU encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify GTPU tunnel source IP is VPP_IP and destination IP is MY_IP.
+        self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+            else:
+                self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+        # Verify UDP destination port is GTPU 2152, source UDP port could be
+        #  arbitrary.
+        self.assertEqual(pkt[UDP].dport, type(self).dport)
+        # Verify teid
+        self.assertEqual(pkt[GTP_U_Header].teid, vni)
+
+    def test_encap(self):
+        """ Encapsulation test
+        Send frames from pg1
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.pg1.add_stream([self.frame_reply])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's correctly encapsulated.
+        out = self.pg0.get_capture(1)
+        pkt = out[0]
+        self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+        # payload = self.decapsulate(pkt)
+        # self.assert_eq_pkts(payload, self.frame_reply)
+
+    def test_ucast_flood(self):
+        """ Unicast flood test
+        Send frames from pg3
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.pg3.add_stream([self.frame_reply])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Get packet from each tunnel and assert it's correctly encapsulated.
+        out = self.pg0.get_capture(self.n_ucast_tunnels)
+        for pkt in out:
+            self.check_encapsulation(pkt, self.ucast_flood_bd, True)
+            # payload = self.decapsulate(pkt)
+            # self.assert_eq_pkts(payload, self.frame_reply)
+
+    def test_mcast_flood(self):
+        """ Multicast flood test
+        Send frames from pg2
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.pg2.add_stream([self.frame_reply])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's correctly encapsulated.
+        out = self.pg0.get_capture(1)
+        pkt = out[0]
+        self.check_encapsulation(pkt, self.mcast_flood_bd,
+                                 local_only=False, mcast_pkt=True)
+
+        # payload = self.decapsulate(pkt)
+        # self.assert_eq_pkts(payload, self.frame_reply)
+
+    @classmethod
+    def create_gtpu_flood_test_bd(cls, teid, n_ucast_tunnels):
+        # Create 10 ucast gtpu tunnels under bd
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_ucast_tunnels
+        next_hop_address = cls.pg0.remote_ip4
+        for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+                                  ip_range_end):
+            # add host route so dest_ip4 will not be resolved
+            rip = VppIpRoute(cls, dest_ip4, 32,
+                             [VppRoutePath(next_hop_address,
+                                           INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+            r = cls.vapi.gtpu_add_del_tunnel(
+                is_add=True,
+                mcast_sw_if_index=0xFFFFFFFF,
+                decap_next_index=0xFFFFFFFF,
+                src_address=cls.pg0.local_ip4,
+                dst_address=dest_ip4,
+                teid=teid)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=teid)
+
+    @classmethod
+    def add_del_shared_mcast_dst_load(cls, is_add):
+        """
+        add or del tunnels sharing the same mcast dst
+        to test gtpu ref_count mechanism
+        """
+        n_shared_dst_tunnels = 20
+        teid_start = 1000
+        teid_end = teid_start + n_shared_dst_tunnels
+        for teid in range(teid_start, teid_end):
+            r = cls.vapi.gtpu_add_del_tunnel(
+                decap_next_index=0xFFFFFFFF,
+                src_address=cls.pg0.local_ip4,
+                dst_address=cls.mcast_ip4,
+                mcast_sw_if_index=1,
+                teid=teid,
+                is_add=is_add)
+            if r.sw_if_index == 0xffffffff:
+                raise ValueError("bad sw_if_index: ~0")
+
+    @classmethod
+    def add_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=1)
+
+    @classmethod
+    def del_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=0)
+
+    @classmethod
+    def add_del_mcast_tunnels_load(cls, is_add):
+        """
+        add or del tunnels to test gtpu stability
+        """
+        n_distinct_dst_tunnels = 20
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_distinct_dst_tunnels
+        for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+                                  ip_range_end):
+            teid = int(dest_ip4.split('.')[3])
+            cls.vapi.gtpu_add_del_tunnel(
+                decap_next_index=0xFFFFFFFF,
+                src_address=cls.pg0.local_ip4,
+                dst_address=dest_ip4,
+                mcast_sw_if_index=1,
+                teid=teid,
+                is_add=is_add)
+
+    @classmethod
+    def add_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=0)
+
+    # Class method to start the GTPU test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestGtpu, cls).setUpClass()
+
+        try:
+            cls.dport = 2152
+            cls.gtp_type = 0xff
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip4()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_arp()
+
+            # Our Multicast address
+            cls.mcast_ip4 = '239.1.1.1'
+            cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+
+            # Create GTPU VTEP on VPP pg0, and put gtpu_tunnel0 and pg1
+            #  into BD.
+            cls.single_tunnel_bd = 11
+            cls.single_tunnel_vni = 11
+            r = cls.vapi.gtpu_add_del_tunnel(
+                is_add=True,
+                mcast_sw_if_index=0xFFFFFFFF,
+                decap_next_index=0xFFFFFFFF,
+                src_address=cls.pg0.local_ip4,
+                dst_address=cls.pg0.remote_ip4,
+                teid=cls.single_tunnel_vni)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd)
+
+            # Setup teid 2 to test multicast flooding
+            cls.n_ucast_tunnels = 10
+            cls.mcast_flood_bd = 12
+            cls.create_gtpu_flood_test_bd(cls.mcast_flood_bd,
+                                          cls.n_ucast_tunnels)
+            r = cls.vapi.gtpu_add_del_tunnel(
+                is_add=True,
+                src_address=cls.pg0.local_ip4,
+                dst_address=cls.mcast_ip4,
+                mcast_sw_if_index=1,
+                decap_next_index=0xFFFFFFFF,
+                teid=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd)
+
+            # Add and delete mcast tunnels to check stability
+            cls.add_shared_mcast_dst_load()
+            cls.add_mcast_tunnels_load()
+            cls.del_shared_mcast_dst_load()
+            cls.del_mcast_tunnels_load()
+
+            # Setup teid 3 to test unicast flooding
+            cls.ucast_flood_bd = 13
+            cls.create_gtpu_flood_test_bd(cls.ucast_flood_bd,
+                                          cls.n_ucast_tunnels)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd)
+        except Exception:
+            super(TestGtpu, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestGtpu, cls).tearDownClass()
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+    def tearDown(self):
+        super(TestGtpu, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 11 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 12 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 13 detail"))
+        self.logger.info(self.vapi.cli("show int"))
+        self.logger.info(self.vapi.cli("show gtpu tunnel"))
+        self.logger.info(self.vapi.cli("show trace"))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_igmp.py b/test/test_igmp.py
new file mode 100644
index 0000000..8053bc3
--- /dev/null
+++ b/test/test_igmp.py
@@ -0,0 +1,837 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, IPOption
+from scapy.contrib.igmpv3 import IGMPv3, IGMPv3gr, IGMPv3mq, IGMPv3mr
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from vpp_igmp import find_igmp_state, IGMP_FILTER, IgmpRecord, IGMP_MODE, \
+    IgmpSG, VppHostState, wait_for_igmp_event
+from vpp_ip_route import find_mroute, VppIpTable
+
+
+class IgmpMode:
+    HOST = 1
+    ROUTER = 0
+
+
+@tag_fixme_vpp_workers
+class TestIgmp(VppTestCase):
+    """ IGMP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIgmp, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIgmp, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIgmp, self).setUp()
+
+        self.create_pg_interfaces(range(4))
+        self.sg_list = []
+        self.config_list = []
+
+        self.ip_addr = []
+        self.ip_table = VppIpTable(self, 1)
+        self.ip_table.add_vpp_config()
+
+        for pg in self.pg_interfaces[2:]:
+            pg.set_table_ip4(1)
+        for pg in self.pg_interfaces:
+            pg.admin_up()
+            pg.config_ip4()
+            pg.resolve_arp()
+
+    def tearDown(self):
+        for pg in self.pg_interfaces:
+            self.vapi.igmp_clear_interface(pg.sw_if_index)
+            pg.unconfig_ip4()
+            pg.set_table_ip4(0)
+            pg.admin_down()
+        super(TestIgmp, self).tearDown()
+
+    def send(self, ti, pkts):
+        ti.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+    def test_igmp_flush(self):
+        """ IGMP Link Up/down and Flush """
+
+        #
+        # FIX THIS. Link down.
+        #
+
+    def test_igmp_enable(self):
+        """ IGMP enable/disable on an interface
+
+        check for the addition/removal of the IGMP mroutes """
+
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 1, IGMP_MODE.HOST)
+
+        self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32))
+        self.assertTrue(find_mroute(self, "224.0.0.22", "0.0.0.0", 32))
+
+        self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 1, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg3.sw_if_index, 1, IGMP_MODE.HOST)
+
+        self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32,
+                                    table_id=1))
+        self.assertTrue(find_mroute(self, "224.0.0.22", "0.0.0.0", 32,
+                                    table_id=1))
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 0, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 0, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg3.sw_if_index, 0, IGMP_MODE.HOST)
+
+        self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32))
+        self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32))
+        self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32,
+                                    table_id=1))
+        self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32,
+                                     table_id=1))
+
+    def verify_general_query(self, p):
+        ip = p[IP]
+        self.assertEqual(len(ip.options), 1)
+        self.assertEqual(ip.options[0].option, 20)
+        self.assertEqual(ip.dst, "224.0.0.1")
+        self.assertEqual(ip.proto, 2)
+        igmp = p[IGMPv3]
+        self.assertEqual(igmp.type, 0x11)
+        self.assertEqual(igmp.gaddr, "0.0.0.0")
+
+    def verify_group_query(self, p, grp, srcs):
+        ip = p[IP]
+        self.assertEqual(ip.dst, grp)
+        self.assertEqual(ip.proto, 2)
+        self.assertEqual(len(ip.options), 1)
+        self.assertEqual(ip.options[0].option, 20)
+        self.assertEqual(ip.proto, 2)
+        igmp = p[IGMPv3]
+        self.assertEqual(igmp.type, 0x11)
+        self.assertEqual(igmp.gaddr, grp)
+
+    def verify_report(self, rx, records):
+        ip = rx[IP]
+        self.assertEqual(rx[IP].dst, "224.0.0.22")
+        self.assertEqual(len(ip.options), 1)
+        self.assertEqual(ip.options[0].option, 20)
+        self.assertEqual(ip.proto, 2)
+        self.assertEqual(IGMPv3.igmpv3types[rx[IGMPv3].type],
+                         "Version 3 Membership Report")
+        self.assertEqual(rx[IGMPv3mr].numgrp, len(records))
+
+        received = rx[IGMPv3mr].records
+
+        for ii in range(len(records)):
+            gr = received[ii]
+            r = records[ii]
+            self.assertEqual(IGMPv3gr.igmpv3grtypes[gr.rtype], r.type)
+            self.assertEqual(gr.numsrc, len(r.sg.saddrs))
+            self.assertEqual(gr.maddr, r.sg.gaddr)
+            self.assertEqual(len(gr.srcaddrs), len(r.sg.saddrs))
+
+            self.assertEqual(sorted(gr.srcaddrs),
+                             sorted(r.sg.saddrs))
+
+    def add_group(self, itf, sg, n_pkts=2):
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        hs = VppHostState(self,
+                          IGMP_FILTER.INCLUDE,
+                          itf.sw_if_index,
+                          sg)
+        hs.add_vpp_config()
+
+        capture = itf.get_capture(n_pkts, timeout=10)
+
+        # reports are transmitted twice due to default rebostness value=2
+        self.verify_report(capture[0],
+                           [IgmpRecord(sg, "Allow New Sources")]),
+        self.verify_report(capture[1],
+                           [IgmpRecord(sg, "Allow New Sources")]),
+
+        return hs
+
+    def remove_group(self, hs):
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        hs.remove_vpp_config()
+
+        capture = self.pg0.get_capture(1, timeout=10)
+
+        self.verify_report(capture[0],
+                           [IgmpRecord(hs.sg, "Block Old Sources")])
+
+    def test_igmp_host(self):
+        """ IGMP Host functions """
+
+        #
+        # Enable interface for host functions
+        #
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index,
+                                      1,
+                                      IGMP_MODE.HOST)
+
+        #
+        # Add one S,G of state and expect a state-change event report
+        # indicating the addition of the S,G
+        #
+        h1 = self.add_group(self.pg0, IgmpSG("239.1.1.1", ["1.1.1.1"]))
+
+        # search for the corresponding state created in VPP
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 1)
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.1", "1.1.1.1"))
+
+        #
+        # Send a general query (to the all router's address)
+        # expect VPP to respond with a membership report.
+        # Pad the query with 0 - some devices in the big wild
+        # internet are prone to this.
+        #
+        p_g = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst='224.0.0.1', tos=0xc0) /
+               IGMPv3(type="Membership Query", mrcode=100) /
+               IGMPv3mq(gaddr="0.0.0.0") /
+               Raw(b'\x00' * 10))
+
+        self.send(self.pg0, p_g)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        #
+        # Group specific query
+        #
+        p_gs = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                   options=[IPOption(copy_flag=1, optclass="control",
+                                     option="router_alert")]) /
+                IGMPv3(type="Membership Query", mrcode=100) /
+                IGMPv3mq(gaddr="239.1.1.1"))
+
+        self.send(self.pg0, p_gs)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        #
+        # A group and source specific query, with the source matching
+        # the source VPP has
+        #
+        p_gs1 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                    options=[IPOption(copy_flag=1, optclass="control",
+                                      option="router_alert")]) /
+                 IGMPv3(type="Membership Query", mrcode=100) /
+                 IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.1"]))
+
+        self.send(self.pg0, p_gs1)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        #
+        # A group and source specific query that reports more sources
+        # than the packet actually has.
+        #
+        p_gs2 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                    options=[IPOption(copy_flag=1, optclass="control",
+                                      option="router_alert")]) /
+                 IGMPv3(type="Membership Query", mrcode=100) /
+                 IGMPv3mq(gaddr="239.1.1.1", numsrc=4, srcaddrs=["1.1.1.1"]))
+
+        self.send_and_assert_no_replies(self.pg0, p_gs2, timeout=10)
+
+        #
+        # A group and source specific query, with the source NOT matching
+        # the source VPP has. There should be no response.
+        #
+        p_gs2 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                    options=[IPOption(copy_flag=1, optclass="control",
+                                      option="router_alert")]) /
+                 IGMPv3(type="Membership Query", mrcode=100) /
+                 IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.2"]))
+
+        self.send_and_assert_no_replies(self.pg0, p_gs2, timeout=10)
+
+        #
+        # A group and source specific query, with the multiple sources
+        # one of which matches the source VPP has.
+        # The report should contain only the source VPP has.
+        #
+        p_gs3 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                    options=[IPOption(copy_flag=1, optclass="control",
+                                      option="router_alert")]) /
+                 IGMPv3(type="Membership Query", mrcode=100) /
+                 IGMPv3mq(gaddr="239.1.1.1",
+                          srcaddrs=["1.1.1.1", "1.1.1.2", "1.1.1.3"]))
+
+        self.send(self.pg0, p_gs3)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        #
+        # Two source and group specific queries in quick succession, the
+        # first does not have VPPs source the second does. then vice-versa
+        #
+        self.send(self.pg0, [p_gs2, p_gs1])
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        self.send(self.pg0, [p_gs1, p_gs2])
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h1.sg, "Mode Is Include")])
+
+        #
+        # remove state, expect the report for the removal
+        #
+        self.remove_group(h1)
+
+        dump = self.vapi.igmp_dump()
+        self.assertFalse(dump)
+
+        #
+        # A group with multiple sources
+        #
+        h2 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.1",
+                                   ["1.1.1.1", "1.1.1.2", "1.1.1.3"]))
+
+        # search for the corresponding state created in VPP
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 3)
+        for s in h2.sg.saddrs:
+            self.assertTrue(find_igmp_state(dump, self.pg0,
+                                            "239.1.1.1", s))
+        #
+        # Send a general query (to the all router's address)
+        # expect VPP to respond with a membership report will all sources
+        #
+        self.send(self.pg0, p_g)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(h2.sg, "Mode Is Include")])
+
+        #
+        # Group and source specific query; some present some not
+        #
+        p_gs = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IP(src=self.pg0.remote_ip4, dst='239.1.1.1', tos=0xc0,
+                   options=[IPOption(copy_flag=1, optclass="control",
+                                     option="router_alert")]) /
+                IGMPv3(type="Membership Query", mrcode=100) /
+                IGMPv3mq(gaddr="239.1.1.1",
+                         srcaddrs=["1.1.1.1", "1.1.1.2", "1.1.1.4"]))
+
+        self.send(self.pg0, p_gs)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(
+                               IgmpSG('239.1.1.1', ["1.1.1.1", "1.1.1.2"]),
+                               "Mode Is Include")])
+
+        #
+        # add loads more groups
+        #
+        h3 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.2",
+                                   ["2.1.1.1", "2.1.1.2", "2.1.1.3"]))
+        h4 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.3",
+                                   ["3.1.1.1", "3.1.1.2", "3.1.1.3"]))
+        h5 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.4",
+                                   ["4.1.1.1", "4.1.1.2", "4.1.1.3"]))
+        h6 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.5",
+                                   ["5.1.1.1", "5.1.1.2", "5.1.1.3"]))
+        h7 = self.add_group(self.pg0,
+                            IgmpSG("239.1.1.6",
+                                   ["6.1.1.1", "6.1.1.2",
+                                    "6.1.1.3", "6.1.1.4",
+                                    "6.1.1.5", "6.1.1.6",
+                                    "6.1.1.7", "6.1.1.8",
+                                    "6.1.1.9", "6.1.1.10",
+                                    "6.1.1.11", "6.1.1.12",
+                                    "6.1.1.13", "6.1.1.14",
+                                    "6.1.1.15", "6.1.1.16"]))
+
+        #
+        # general query.
+        # the order the groups come in is not important, so what is
+        # checked for is what VPP is sending today.
+        #
+        self.send(self.pg0, p_g)
+
+        capture = self.pg0.get_capture(1, timeout=10)
+
+        self.verify_report(capture[0],
+                           [IgmpRecord(h3.sg, "Mode Is Include"),
+                            IgmpRecord(h2.sg, "Mode Is Include"),
+                            IgmpRecord(h6.sg, "Mode Is Include"),
+                            IgmpRecord(h4.sg, "Mode Is Include"),
+                            IgmpRecord(h5.sg, "Mode Is Include"),
+                            IgmpRecord(h7.sg, "Mode Is Include")])
+
+        #
+        # modify a group to add and remove some sources
+        #
+        h7.sg = IgmpSG("239.1.1.6",
+                       ["6.1.1.1", "6.1.1.2",
+                        "6.1.1.5", "6.1.1.6",
+                        "6.1.1.7", "6.1.1.8",
+                        "6.1.1.9", "6.1.1.10",
+                        "6.1.1.11", "6.1.1.12",
+                        "6.1.1.13", "6.1.1.14",
+                        "6.1.1.15", "6.1.1.16",
+                        "6.1.1.17", "6.1.1.18"])
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        h7.add_vpp_config()
+
+        capture = self.pg0.get_capture(1, timeout=10)
+        self.verify_report(capture[0],
+                           [IgmpRecord(IgmpSG("239.1.1.6",
+                                              ["6.1.1.17", "6.1.1.18"]),
+                                       "Allow New Sources"),
+                            IgmpRecord(IgmpSG("239.1.1.6",
+                                              ["6.1.1.3", "6.1.1.4"]),
+                                       "Block Old Sources")])
+
+        #
+        # add an additional groups with many sources so that each group
+        # consumes the link MTU. We should therefore see multiple state
+        # state reports when queried.
+        #
+        self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [560, 0, 0, 0])
+
+        src_list = []
+        for i in range(128):
+            src_list.append("10.1.1.%d" % i)
+
+        h8 = self.add_group(self.pg0,
+                            IgmpSG("238.1.1.1", src_list))
+        h9 = self.add_group(self.pg0,
+                            IgmpSG("238.1.1.2", src_list))
+
+        self.send(self.pg0, p_g)
+
+        capture = self.pg0.get_capture(4, timeout=10)
+
+        self.verify_report(capture[0],
+                           [IgmpRecord(h3.sg, "Mode Is Include"),
+                            IgmpRecord(h2.sg, "Mode Is Include"),
+                            IgmpRecord(h6.sg, "Mode Is Include"),
+                            IgmpRecord(h4.sg, "Mode Is Include"),
+                            IgmpRecord(h5.sg, "Mode Is Include")])
+        self.verify_report(capture[1],
+                           [IgmpRecord(h8.sg, "Mode Is Include")])
+        self.verify_report(capture[2],
+                           [IgmpRecord(h7.sg, "Mode Is Include")])
+        self.verify_report(capture[3],
+                           [IgmpRecord(h9.sg, "Mode Is Include")])
+
+        #
+        # drop the MTU further (so a 128 sized group won't fit)
+        #
+        self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [512, 0, 0, 0])
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        h10 = VppHostState(self,
+                           IGMP_FILTER.INCLUDE,
+                           self.pg0.sw_if_index,
+                           IgmpSG("238.1.1.3", src_list))
+        h10.add_vpp_config()
+
+        capture = self.pg0.get_capture(2, timeout=10)
+        # wait for a little bit
+        self.sleep(1)
+
+        #
+        # remove state, expect the report for the removal
+        # the dump should be empty
+        #
+        self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [600, 0, 0, 0])
+        self.remove_group(h8)
+        self.remove_group(h9)
+        self.remove_group(h2)
+        self.remove_group(h3)
+        self.remove_group(h4)
+        self.remove_group(h5)
+        self.remove_group(h6)
+        self.remove_group(h7)
+        self.remove_group(h10)
+
+        self.logger.info(self.vapi.cli("sh igmp config"))
+        self.assertFalse(self.vapi.igmp_dump())
+
+        #
+        # TODO
+        #  ADD STATE ON MORE INTERFACES
+        #
+
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index,
+                                      0,
+                                      IGMP_MODE.HOST)
+
+    def test_igmp_router(self):
+        """ IGMP Router Functions """
+
+        #
+        # Drop reports when not enabled
+        #
+        p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Allow New Sources",
+                        maddr="239.1.1.1", srcaddrs=["10.1.1.1", "10.1.1.2"]))
+        p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Block Old Sources",
+                        maddr="239.1.1.1", srcaddrs=["10.1.1.1", "10.1.1.2"]))
+
+        self.send(self.pg0, p_j)
+        self.assertFalse(self.vapi.igmp_dump())
+
+        #
+        # drop the default timer values so these tests execute in a
+        # reasonable time frame
+        #
+        self.vapi.cli("test igmp timers query 1 src 3 leave 1")
+
+        #
+        # enable router functions on the interface
+        #
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index,
+                                      1,
+                                      IGMP_MODE.ROUTER)
+        self.vapi.want_igmp_events(1)
+
+        #
+        # wait for router to send general query
+        #
+        for ii in range(3):
+            capture = self.pg0.get_capture(1, timeout=2)
+            self.verify_general_query(capture[0])
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+        #
+        # re-send the report. VPP should now hold state for the new group
+        # VPP sends a notification that a new group has been joined
+        #
+        self.send(self.pg0, p_j)
+
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 1))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 1))
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 2)
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.1", "10.1.1.1"))
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.1", "10.1.1.2"))
+
+        #
+        # wait for the per-source timer to expire
+        # the state should be reaped
+        # VPP sends a notification that the group has been left
+        #
+        self.assertTrue(wait_for_igmp_event(self, 4, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 0))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 0))
+        self.assertFalse(self.vapi.igmp_dump())
+
+        #
+        # resend the join. wait for two queries and then send a current-state
+        # record to include all sources. this should reset the expiry time
+        # on the sources and thus they will still be present in 2 seconds time.
+        # If the source timer was not refreshed, then the state would have
+        # expired in 3 seconds.
+        #
+        self.send(self.pg0, p_j)
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 1))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 1))
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 2)
+
+        capture = self.pg0.get_capture(2, timeout=3)
+        self.verify_general_query(capture[0])
+        self.verify_general_query(capture[1])
+
+        p_cs = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0,
+                   options=[IPOption(copy_flag=1, optclass="control",
+                                     option="router_alert")]) /
+                IGMPv3(type="Version 3 Membership Report") /
+                IGMPv3mr(numgrp=1) /
+                IGMPv3gr(rtype="Mode Is Include",
+                         maddr="239.1.1.1", srcaddrs=["10.1.1.1", "10.1.1.2"]))
+
+        self.send(self.pg0, p_cs)
+
+        self.sleep(2)
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 2)
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.1", "10.1.1.1"))
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.1", "10.1.1.2"))
+
+        #
+        # wait for the per-source timer to expire
+        # the state should be reaped
+        #
+        self.assertTrue(wait_for_igmp_event(self, 4, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 0))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 0))
+        self.assertFalse(self.vapi.igmp_dump())
+
+        #
+        # resend the join, then a leave. Router sends a group+source
+        # specific query containing both sources
+        #
+        self.send(self.pg0, p_j)
+
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 1))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 1))
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertEqual(len(dump), 2)
+
+        self.send(self.pg0, p_l)
+        capture = self.pg0.get_capture(1, timeout=3)
+        self.verify_group_query(capture[0], "239.1.1.1",
+                                ["10.1.1.1", "10.1.1.2"])
+
+        #
+        # the group specific query drops the timeout to leave (=1) seconds
+        #
+        self.assertTrue(wait_for_igmp_event(self, 2, self.pg0,
+                                            "239.1.1.1", "10.1.1.1", 0))
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.1", "10.1.1.2", 0))
+        self.assertFalse(self.vapi.igmp_dump())
+        self.assertFalse(self.vapi.igmp_dump())
+
+        #
+        # a TO_EX({}) / IN_EX({}) is treated like a (*,G) join
+        #
+        p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Change To Exclude Mode", maddr="239.1.1.2"))
+
+        self.send(self.pg0, p_j)
+
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.2", "0.0.0.0", 1))
+
+        p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Mode Is Exclude", maddr="239.1.1.3"))
+
+        self.send(self.pg0, p_j)
+
+        self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
+                                            "239.1.1.3", "0.0.0.0", 1))
+
+        #
+        # A 'allow sources' for {} should be ignored as it should
+        # never be sent.
+        #
+        p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Allow New Sources", maddr="239.1.1.4"))
+
+        self.send(self.pg0, p_j)
+
+        dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.2", "0.0.0.0"))
+        self.assertTrue(find_igmp_state(dump, self.pg0,
+                                        "239.1.1.3", "0.0.0.0"))
+        self.assertFalse(find_igmp_state(dump, self.pg0,
+                                         "239.1.1.4", "0.0.0.0"))
+
+        #
+        # a TO_IN({}) and IS_IN({}) are treated like a (*,G) leave
+        #
+        self.vapi.cli("set logging class igmp level debug")
+        p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Change To Include Mode", maddr="239.1.1.2"))
+
+        self.send(self.pg0, p_l)
+        self.assertTrue(wait_for_igmp_event(self, 2, self.pg0,
+                                            "239.1.1.2", "0.0.0.0", 0))
+
+        p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                  options=[IPOption(copy_flag=1, optclass="control",
+                                    option="router_alert")]) /
+               IGMPv3(type="Version 3 Membership Report") /
+               IGMPv3mr(numgrp=1) /
+               IGMPv3gr(rtype="Mode Is Include", maddr="239.1.1.3"))
+
+        self.send(self.pg0, p_l)
+
+        self.assertTrue(wait_for_igmp_event(self, 2, self.pg0,
+                                            "239.1.1.3", "0.0.0.0", 0))
+        self.assertFalse(self.vapi.igmp_dump(self.pg0.sw_if_index))
+
+        #
+        # disable router config
+        #
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index,
+                                      0,
+                                      IGMP_MODE.ROUTER)
+
+    def _create_igmpv3_pck(self, itf, rtype, maddr, srcaddrs):
+        p = (Ether(dst=itf.local_mac, src=itf.remote_mac) /
+             IP(src=itf.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
+                options=[IPOption(copy_flag=1, optclass="control",
+                                  option="router_alert")]) /
+             IGMPv3(type="Version 3 Membership Report") /
+             IGMPv3mr(numgrp=1) /
+             IGMPv3gr(rtype=rtype,
+                      maddr=maddr, srcaddrs=srcaddrs))
+        return p
+
+    def test_igmp_proxy_device(self):
+        """ IGMP proxy device """
+        self.pg2.admin_down()
+        self.pg2.unconfig_ip4()
+        self.pg2.set_table_ip4(0)
+        self.pg2.config_ip4()
+        self.pg2.admin_up()
+
+        self.vapi.cli('test igmp timers query 10 src 3 leave 1')
+
+        # enable IGMP
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 1,
+                                      IGMP_MODE.ROUTER)
+        self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 1,
+                                      IGMP_MODE.ROUTER)
+
+        # create IGMP proxy device
+        self.vapi.igmp_proxy_device_add_del(0, self.pg0.sw_if_index, 1)
+        self.vapi.igmp_proxy_device_add_del_interface(0,
+                                                      self.pg1.sw_if_index, 1)
+        self.vapi.igmp_proxy_device_add_del_interface(0,
+                                                      self.pg2.sw_if_index, 1)
+
+        # send join on pg1. join should be proxied by pg0
+        p_j = self._create_igmpv3_pck(self.pg1, "Allow New Sources",
+                                      "239.1.1.1", ["10.1.1.1", "10.1.1.2"])
+        self.send(self.pg1, p_j)
+
+        capture = self.pg0.get_capture(1, timeout=1)
+        self.verify_report(capture[0], [IgmpRecord(IgmpSG("239.1.1.1",
+                           ["10.1.1.1", "10.1.1.2"]), "Allow New Sources")])
+        self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
+
+        # send join on pg2. join should be proxied by pg0.
+        # the group should contain only 10.1.1.3 as
+        # 10.1.1.1 was already reported
+        p_j = self._create_igmpv3_pck(self.pg2, "Allow New Sources",
+                                      "239.1.1.1", ["10.1.1.1", "10.1.1.3"])
+        self.send(self.pg2, p_j)
+
+        capture = self.pg0.get_capture(1, timeout=1)
+        self.verify_report(capture[0], [IgmpRecord(IgmpSG("239.1.1.1",
+                           ["10.1.1.3"]), "Allow New Sources")])
+        self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
+
+        # send leave on pg2. leave for 10.1.1.3 should be proxyed
+        # as pg2 was the only interface interested in 10.1.1.3
+        p_l = self._create_igmpv3_pck(self.pg2, "Block Old Sources",
+                                      "239.1.1.1", ["10.1.1.3"])
+        self.send(self.pg2, p_l)
+
+        capture = self.pg0.get_capture(1, timeout=2)
+        self.verify_report(capture[0], [IgmpRecord(IgmpSG("239.1.1.1",
+                           ["10.1.1.3"]), "Block Old Sources")])
+        self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
+
+        # disable igmp on pg1 (also removes interface from proxy device)
+        # proxy leave for 10.1.1.2. pg2 is still interested in 10.1.1.1
+        self.pg_enable_capture(self.pg_interfaces)
+        self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 0,
+                                      IGMP_MODE.ROUTER)
+
+        capture = self.pg0.get_capture(1, timeout=1)
+        self.verify_report(capture[0], [IgmpRecord(IgmpSG("239.1.1.1",
+                           ["10.1.1.2"]), "Block Old Sources")])
+        self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
+
+        # disable IGMP on pg0 and pg1.
+        #   disabling IGMP on pg0 (proxy device upstream interface)
+        #   removes this proxy device
+        self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.HOST)
+        self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 0,
+                                      IGMP_MODE.ROUTER)
+        self.assertFalse(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_ikev2.py b/test/test_ikev2.py
new file mode 100644
index 0000000..558e8a0
--- /dev/null
+++ b/test/test_ikev2.py
@@ -0,0 +1,2059 @@
+import os
+import time
+from socket import inet_pton
+from cryptography import x509
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import hashes, hmac
+from cryptography.hazmat.primitives.asymmetric import dh, padding
+from cryptography.hazmat.primitives.serialization import load_pem_private_key
+from cryptography.hazmat.primitives.ciphers import (
+    Cipher,
+    algorithms,
+    modes,
+)
+from ipaddress import IPv4Address, IPv6Address, ip_address
+import unittest
+from scapy.layers.ipsec import ESP
+from scapy.layers.inet import IP, UDP, Ether
+from scapy.layers.inet6 import IPv6
+from scapy.packet import raw, Raw
+from scapy.utils import long_converter
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+from vpp_ikev2 import Profile, IDType, AuthMethod
+from vpp_papi import VppEnum
+
+try:
+    text_type = unicode
+except NameError:
+    text_type = str
+
+KEY_PAD = b"Key Pad for IKEv2"
+SALT_SIZE = 4
+GCM_ICV_SIZE = 16
+GCM_IV_SIZE = 8
+
+
+# defined in rfc3526
+# tuple structure is (p, g, key_len)
+DH = {
+    '2048MODPgr': (long_converter("""
+    FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1
+    29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD
+    EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245
+    E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED
+    EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D
+    C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F
+    83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D
+    670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B
+    E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9
+    DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510
+    15728E5A 8AACAA68 FFFFFFFF FFFFFFFF"""), 2, 256),
+
+    '3072MODPgr': (long_converter("""
+    FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1
+    29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD
+    EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245
+    E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED
+    EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D
+    C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F
+    83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D
+    670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B
+    E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9
+    DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510
+    15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64
+    ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7
+    ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B
+    F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C
+    BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31
+    43DB5BFC E0FD108E 4B82D120 A93AD2CA FFFFFFFF FFFFFFFF"""), 2, 384)
+}
+
+
+class CryptoAlgo(object):
+    def __init__(self, name, cipher, mode):
+        self.name = name
+        self.cipher = cipher
+        self.mode = mode
+        if self.cipher is not None:
+            self.bs = self.cipher.block_size // 8
+
+            if self.name == 'AES-GCM-16ICV':
+                self.iv_len = GCM_IV_SIZE
+            else:
+                self.iv_len = self.bs
+
+    def encrypt(self, data, key, aad=None):
+        iv = os.urandom(self.iv_len)
+        if aad is None:
+            encryptor = Cipher(self.cipher(key), self.mode(iv),
+                               default_backend()).encryptor()
+            return iv + encryptor.update(data) + encryptor.finalize()
+        else:
+            salt = key[-SALT_SIZE:]
+            nonce = salt + iv
+            encryptor = Cipher(self.cipher(key[:-SALT_SIZE]), self.mode(nonce),
+                               default_backend()).encryptor()
+            encryptor.authenticate_additional_data(aad)
+            data = encryptor.update(data) + encryptor.finalize()
+            data += encryptor.tag[:GCM_ICV_SIZE]
+            return iv + data
+
+    def decrypt(self, data, key, aad=None, icv=None):
+        if aad is None:
+            iv = data[:self.iv_len]
+            ct = data[self.iv_len:]
+            decryptor = Cipher(algorithms.AES(key),
+                               self.mode(iv),
+                               default_backend()).decryptor()
+            return decryptor.update(ct) + decryptor.finalize()
+        else:
+            salt = key[-SALT_SIZE:]
+            nonce = salt + data[:GCM_IV_SIZE]
+            ct = data[GCM_IV_SIZE:]
+            key = key[:-SALT_SIZE]
+            decryptor = Cipher(algorithms.AES(key),
+                               self.mode(nonce, icv, len(icv)),
+                               default_backend()).decryptor()
+            decryptor.authenticate_additional_data(aad)
+            return decryptor.update(ct) + decryptor.finalize()
+
+    def pad(self, data):
+        pad_len = (len(data) // self.bs + 1) * self.bs - len(data)
+        data = data + b'\x00' * (pad_len - 1)
+        return data + bytes([pad_len - 1])
+
+
+class AuthAlgo(object):
+    def __init__(self, name, mac, mod, key_len, trunc_len=None):
+        self.name = name
+        self.mac = mac
+        self.mod = mod
+        self.key_len = key_len
+        self.trunc_len = trunc_len or key_len
+
+
+CRYPTO_ALGOS = {
+    'NULL': CryptoAlgo('NULL', cipher=None, mode=None),
+    'AES-CBC': CryptoAlgo('AES-CBC', cipher=algorithms.AES, mode=modes.CBC),
+    'AES-GCM-16ICV': CryptoAlgo('AES-GCM-16ICV', cipher=algorithms.AES,
+                                mode=modes.GCM),
+}
+
+AUTH_ALGOS = {
+    'NULL': AuthAlgo('NULL', mac=None, mod=None, key_len=0, trunc_len=0),
+    'HMAC-SHA1-96': AuthAlgo('HMAC-SHA1-96', hmac.HMAC, hashes.SHA1, 20, 12),
+    'SHA2-256-128': AuthAlgo('SHA2-256-128', hmac.HMAC, hashes.SHA256, 32, 16),
+    'SHA2-384-192': AuthAlgo('SHA2-384-192', hmac.HMAC, hashes.SHA256, 48, 24),
+    'SHA2-512-256': AuthAlgo('SHA2-512-256', hmac.HMAC, hashes.SHA256, 64, 32),
+}
+
+PRF_ALGOS = {
+    'NULL': AuthAlgo('NULL', mac=None, mod=None, key_len=0, trunc_len=0),
+    'PRF_HMAC_SHA2_256': AuthAlgo('PRF_HMAC_SHA2_256', hmac.HMAC,
+                                  hashes.SHA256, 32),
+}
+
+CRYPTO_IDS = {
+    12: 'AES-CBC',
+    20: 'AES-GCM-16ICV',
+}
+
+INTEG_IDS = {
+    2: 'HMAC-SHA1-96',
+    12: 'SHA2-256-128',
+    13: 'SHA2-384-192',
+    14: 'SHA2-512-256',
+}
+
+
+class IKEv2ChildSA(object):
+    def __init__(self, local_ts, remote_ts, is_initiator):
+        spi = os.urandom(4)
+        if is_initiator:
+            self.ispi = spi
+            self.rspi = None
+        else:
+            self.rspi = spi
+            self.ispi = None
+        self.local_ts = local_ts
+        self.remote_ts = remote_ts
+
+
+class IKEv2SA(object):
+    def __init__(self, test, is_initiator=True, i_id=None, r_id=None,
+                 spi=b'\x01\x02\x03\x04\x05\x06\x07\x08', id_type='fqdn',
+                 nonce=None, auth_data=None, local_ts=None, remote_ts=None,
+                 auth_method='shared-key', priv_key=None, i_natt=False,
+                 r_natt=False, udp_encap=False):
+        self.udp_encap = udp_encap
+        self.i_natt = i_natt
+        self.r_natt = r_natt
+        if i_natt or r_natt:
+            self.sport = 4500
+            self.dport = 4500
+        else:
+            self.sport = 500
+            self.dport = 500
+        self.msg_id = 0
+        self.dh_params = None
+        self.test = test
+        self.priv_key = priv_key
+        self.is_initiator = is_initiator
+        nonce = nonce or os.urandom(32)
+        self.auth_data = auth_data
+        self.i_id = i_id
+        self.r_id = r_id
+        if isinstance(id_type, str):
+            self.id_type = IDType.value(id_type)
+        else:
+            self.id_type = id_type
+        self.auth_method = auth_method
+        if self.is_initiator:
+            self.rspi = 8 * b'\x00'
+            self.ispi = spi
+            self.i_nonce = nonce
+        else:
+            self.rspi = spi
+            self.ispi = 8 * b'\x00'
+            self.r_nonce = nonce
+        self.child_sas = [IKEv2ChildSA(local_ts, remote_ts,
+                          self.is_initiator)]
+
+    def new_msg_id(self):
+        self.msg_id += 1
+        return self.msg_id
+
+    @property
+    def my_dh_pub_key(self):
+        if self.is_initiator:
+            return self.i_dh_data
+        return self.r_dh_data
+
+    @property
+    def peer_dh_pub_key(self):
+        if self.is_initiator:
+            return self.r_dh_data
+        return self.i_dh_data
+
+    @property
+    def natt(self):
+        return self.i_natt or self.r_natt
+
+    def compute_secret(self):
+        priv = self.dh_private_key
+        peer = self.peer_dh_pub_key
+        p, g, l = self.ike_group
+        return pow(int.from_bytes(peer, 'big'),
+                   int.from_bytes(priv, 'big'), p).to_bytes(l, 'big')
+
+    def generate_dh_data(self):
+        # generate DH keys
+        if self.ike_dh not in DH:
+            raise NotImplementedError('%s not in DH group' % self.ike_dh)
+
+        if self.dh_params is None:
+            dhg = DH[self.ike_dh]
+            pn = dh.DHParameterNumbers(dhg[0], dhg[1])
+            self.dh_params = pn.parameters(default_backend())
+
+        priv = self.dh_params.generate_private_key()
+        pub = priv.public_key()
+        x = priv.private_numbers().x
+        self.dh_private_key = x.to_bytes(priv.key_size // 8, 'big')
+        y = pub.public_numbers().y
+
+        if self.is_initiator:
+            self.i_dh_data = y.to_bytes(pub.key_size // 8, 'big')
+        else:
+            self.r_dh_data = y.to_bytes(pub.key_size // 8, 'big')
+
+    def complete_dh_data(self):
+        self.dh_shared_secret = self.compute_secret()
+
+    def calc_child_keys(self):
+        prf = self.ike_prf_alg.mod()
+        s = self.i_nonce + self.r_nonce
+        c = self.child_sas[0]
+
+        encr_key_len = self.esp_crypto_key_len
+        integ_key_len = self.esp_integ_alg.key_len
+        salt_len = 0 if integ_key_len else 4
+
+        l = (integ_key_len * 2 +
+             encr_key_len * 2 +
+             salt_len * 2)
+        keymat = self.calc_prfplus(prf, self.sk_d, s, l)
+
+        pos = 0
+        c.sk_ei = keymat[pos:pos+encr_key_len]
+        pos += encr_key_len
+
+        if integ_key_len:
+            c.sk_ai = keymat[pos:pos+integ_key_len]
+            pos += integ_key_len
+        else:
+            c.salt_ei = keymat[pos:pos+salt_len]
+            pos += salt_len
+
+        c.sk_er = keymat[pos:pos+encr_key_len]
+        pos += encr_key_len
+
+        if integ_key_len:
+            c.sk_ar = keymat[pos:pos+integ_key_len]
+            pos += integ_key_len
+        else:
+            c.salt_er = keymat[pos:pos+salt_len]
+            pos += salt_len
+
+    def calc_prfplus(self, prf, key, seed, length):
+        r = b''
+        t = None
+        x = 1
+        while len(r) < length and x < 255:
+            if t is not None:
+                s = t
+            else:
+                s = b''
+            s = s + seed + bytes([x])
+            t = self.calc_prf(prf, key, s)
+            r = r + t
+            x = x + 1
+
+        if x == 255:
+            return None
+        return r
+
+    def calc_prf(self, prf, key, data):
+        h = self.ike_prf_alg.mac(key, prf, backend=default_backend())
+        h.update(data)
+        return h.finalize()
+
+    def calc_keys(self):
+        prf = self.ike_prf_alg.mod()
+        # SKEYSEED = prf(Ni | Nr, g^ir)
+        s = self.i_nonce + self.r_nonce
+        self.skeyseed = self.calc_prf(prf, s, self.dh_shared_secret)
+
+        # calculate S = Ni | Nr | SPIi SPIr
+        s = s + self.ispi + self.rspi
+
+        prf_key_trunc = self.ike_prf_alg.trunc_len
+        encr_key_len = self.ike_crypto_key_len
+        tr_prf_key_len = self.ike_prf_alg.key_len
+        integ_key_len = self.ike_integ_alg.key_len
+        if integ_key_len == 0:
+            salt_size = 4
+        else:
+            salt_size = 0
+
+        l = (prf_key_trunc +
+             integ_key_len * 2 +
+             encr_key_len * 2 +
+             tr_prf_key_len * 2 +
+             salt_size * 2)
+        keymat = self.calc_prfplus(prf, self.skeyseed, s, l)
+
+        pos = 0
+        self.sk_d = keymat[:pos+prf_key_trunc]
+        pos += prf_key_trunc
+
+        self.sk_ai = keymat[pos:pos+integ_key_len]
+        pos += integ_key_len
+        self.sk_ar = keymat[pos:pos+integ_key_len]
+        pos += integ_key_len
+
+        self.sk_ei = keymat[pos:pos+encr_key_len + salt_size]
+        pos += encr_key_len + salt_size
+        self.sk_er = keymat[pos:pos+encr_key_len + salt_size]
+        pos += encr_key_len + salt_size
+
+        self.sk_pi = keymat[pos:pos+tr_prf_key_len]
+        pos += tr_prf_key_len
+        self.sk_pr = keymat[pos:pos+tr_prf_key_len]
+
+    def generate_authmsg(self, prf, packet):
+        if self.is_initiator:
+            id = self.i_id
+            nonce = self.r_nonce
+            key = self.sk_pi
+        else:
+            id = self.r_id
+            nonce = self.i_nonce
+            key = self.sk_pr
+        data = bytes([self.id_type, 0, 0, 0]) + id
+        id_hash = self.calc_prf(prf, key, data)
+        return packet + nonce + id_hash
+
+    def auth_init(self):
+        prf = self.ike_prf_alg.mod()
+        if self.is_initiator:
+            packet = self.init_req_packet
+        else:
+            packet = self.init_resp_packet
+        authmsg = self.generate_authmsg(prf, raw(packet))
+        if self.auth_method == 'shared-key':
+            psk = self.calc_prf(prf, self.auth_data, KEY_PAD)
+            self.auth_data = self.calc_prf(prf, psk, authmsg)
+        elif self.auth_method == 'rsa-sig':
+            self.auth_data = self.priv_key.sign(authmsg, padding.PKCS1v15(),
+                                                hashes.SHA1())
+        else:
+            raise TypeError('unknown auth method type!')
+
+    def encrypt(self, data, aad=None):
+        data = self.ike_crypto_alg.pad(data)
+        return self.ike_crypto_alg.encrypt(data, self.my_cryptokey, aad)
+
+    @property
+    def peer_authkey(self):
+        if self.is_initiator:
+            return self.sk_ar
+        return self.sk_ai
+
+    @property
+    def my_authkey(self):
+        if self.is_initiator:
+            return self.sk_ai
+        return self.sk_ar
+
+    @property
+    def my_cryptokey(self):
+        if self.is_initiator:
+            return self.sk_ei
+        return self.sk_er
+
+    @property
+    def peer_cryptokey(self):
+        if self.is_initiator:
+            return self.sk_er
+        return self.sk_ei
+
+    def concat(self, alg, key_len):
+        return alg + '-' + str(key_len * 8)
+
+    @property
+    def vpp_ike_cypto_alg(self):
+        return self.concat(self.ike_crypto, self.ike_crypto_key_len)
+
+    @property
+    def vpp_esp_cypto_alg(self):
+        return self.concat(self.esp_crypto, self.esp_crypto_key_len)
+
+    def verify_hmac(self, ikemsg):
+        integ_trunc = self.ike_integ_alg.trunc_len
+        exp_hmac = ikemsg[-integ_trunc:]
+        data = ikemsg[:-integ_trunc]
+        computed_hmac = self.compute_hmac(self.ike_integ_alg.mod(),
+                                          self.peer_authkey, data)
+        self.test.assertEqual(computed_hmac[:integ_trunc], exp_hmac)
+
+    def compute_hmac(self, integ, key, data):
+        h = self.ike_integ_alg.mac(key, integ, backend=default_backend())
+        h.update(data)
+        return h.finalize()
+
+    def decrypt(self, data, aad=None, icv=None):
+        return self.ike_crypto_alg.decrypt(data, self.peer_cryptokey, aad, icv)
+
+    def hmac_and_decrypt(self, ike):
+        ep = ike[ikev2.IKEv2_payload_Encrypted]
+        if self.ike_crypto == 'AES-GCM-16ICV':
+            aad_len = len(ikev2.IKEv2_payload_Encrypted()) + len(ikev2.IKEv2())
+            ct = ep.load[:-GCM_ICV_SIZE]
+            tag = ep.load[-GCM_ICV_SIZE:]
+            plain = self.decrypt(ct, raw(ike)[:aad_len], tag)
+        else:
+            self.verify_hmac(raw(ike))
+            integ_trunc = self.ike_integ_alg.trunc_len
+
+            # remove ICV and decrypt payload
+            ct = ep.load[:-integ_trunc]
+            plain = self.decrypt(ct)
+        # remove padding
+        pad_len = plain[-1]
+        return plain[:-pad_len - 1]
+
+    def build_ts_addr(self, ts, version):
+        return {'starting_address_v' + version: ts['start_addr'],
+                'ending_address_v' + version: ts['end_addr']}
+
+    def generate_ts(self, is_ip4):
+        c = self.child_sas[0]
+        ts_data = {'IP_protocol_ID': 0,
+                   'start_port': 0,
+                   'end_port': 0xffff}
+        if is_ip4:
+            ts_data.update(self.build_ts_addr(c.local_ts, '4'))
+            ts1 = ikev2.IPv4TrafficSelector(**ts_data)
+            ts_data.update(self.build_ts_addr(c.remote_ts, '4'))
+            ts2 = ikev2.IPv4TrafficSelector(**ts_data)
+        else:
+            ts_data.update(self.build_ts_addr(c.local_ts, '6'))
+            ts1 = ikev2.IPv6TrafficSelector(**ts_data)
+            ts_data.update(self.build_ts_addr(c.remote_ts, '6'))
+            ts2 = ikev2.IPv6TrafficSelector(**ts_data)
+
+        if self.is_initiator:
+            return ([ts1], [ts2])
+        return ([ts2], [ts1])
+
+    def set_ike_props(self, crypto, crypto_key_len, integ, prf, dh):
+        if crypto not in CRYPTO_ALGOS:
+            raise TypeError('unsupported encryption algo %r' % crypto)
+        self.ike_crypto = crypto
+        self.ike_crypto_alg = CRYPTO_ALGOS[crypto]
+        self.ike_crypto_key_len = crypto_key_len
+
+        if integ not in AUTH_ALGOS:
+            raise TypeError('unsupported auth algo %r' % integ)
+        self.ike_integ = None if integ == 'NULL' else integ
+        self.ike_integ_alg = AUTH_ALGOS[integ]
+
+        if prf not in PRF_ALGOS:
+            raise TypeError('unsupported prf algo %r' % prf)
+        self.ike_prf = prf
+        self.ike_prf_alg = PRF_ALGOS[prf]
+        self.ike_dh = dh
+        self.ike_group = DH[self.ike_dh]
+
+    def set_esp_props(self, crypto, crypto_key_len, integ):
+        self.esp_crypto_key_len = crypto_key_len
+        if crypto not in CRYPTO_ALGOS:
+            raise TypeError('unsupported encryption algo %r' % crypto)
+        self.esp_crypto = crypto
+        self.esp_crypto_alg = CRYPTO_ALGOS[crypto]
+
+        if integ not in AUTH_ALGOS:
+            raise TypeError('unsupported auth algo %r' % integ)
+        self.esp_integ = None if integ == 'NULL' else integ
+        self.esp_integ_alg = AUTH_ALGOS[integ]
+
+    def crypto_attr(self, key_len):
+        if self.ike_crypto in ['AES-CBC', 'AES-GCM-16ICV']:
+            return (0x800e << 16 | key_len << 3, 12)
+        else:
+            raise Exception('unsupported attribute type')
+
+    def ike_crypto_attr(self):
+        return self.crypto_attr(self.ike_crypto_key_len)
+
+    def esp_crypto_attr(self):
+        return self.crypto_attr(self.esp_crypto_key_len)
+
+    def compute_nat_sha1(self, ip, port, rspi=None):
+        if rspi is None:
+            rspi = self.rspi
+        data = self.ispi + rspi + ip + (port).to_bytes(2, 'big')
+        digest = hashes.Hash(hashes.SHA1(), backend=default_backend())
+        digest.update(data)
+        return digest.finalize()
+
+
+class IkePeer(VppTestCase):
+    """ common class for initiator and responder """
+
+    @classmethod
+    def setUpClass(cls):
+        import scapy.contrib.ikev2 as _ikev2
+        globals()['ikev2'] = _ikev2
+        super(IkePeer, cls).setUpClass()
+        cls.create_pg_interfaces(range(2))
+        for i in cls.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(IkePeer, cls).tearDownClass()
+
+    def tearDown(self):
+        super(IkePeer, self).tearDown()
+        if self.del_sa_from_responder:
+            self.initiate_del_sa_from_responder()
+        else:
+            self.initiate_del_sa_from_initiator()
+        r = self.vapi.ikev2_sa_dump()
+        self.assertEqual(len(r), 0)
+        sas = self.vapi.ipsec_sa_dump()
+        self.assertEqual(len(sas), 0)
+        self.p.remove_vpp_config()
+        self.assertIsNone(self.p.query_vpp_config())
+
+    def setUp(self):
+        super(IkePeer, self).setUp()
+        self.config_tc()
+        self.p.add_vpp_config()
+        self.assertIsNotNone(self.p.query_vpp_config())
+        if self.sa.is_initiator:
+            self.sa.generate_dh_data()
+        self.vapi.cli('ikev2 set logging level 4')
+        self.vapi.cli('event-lo clear')
+
+    def assert_counter(self, count, name, version='ip4'):
+        node_name = '/err/ikev2-%s/' % version + name
+        self.assertEqual(count, self.statistics.get_err_counter(node_name))
+
+    def create_rekey_request(self):
+        sa, first_payload = self.generate_auth_payload(is_rekey=True)
+        header = ikev2.IKEv2(
+                init_SPI=self.sa.ispi,
+                resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+                flags='Initiator', exch_type='CREATE_CHILD_SA')
+
+        ike_msg = self.encrypt_ike_msg(header, sa, first_payload)
+        return self.create_packet(self.pg0, ike_msg, self.sa.sport,
+                                  self.sa.dport, self.sa.natt, self.ip6)
+
+    def create_empty_request(self):
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             id=self.sa.new_msg_id(), flags='Initiator',
+                             exch_type='INFORMATIONAL',
+                             next_payload='Encrypted')
+
+        msg = self.encrypt_ike_msg(header, b'', None)
+        return self.create_packet(self.pg0, msg, self.sa.sport,
+                                  self.sa.dport, self.sa.natt, self.ip6)
+
+    def create_packet(self, src_if, msg, sport=500, dport=500, natt=False,
+                      use_ip6=False):
+        if use_ip6:
+            src_ip = src_if.remote_ip6
+            dst_ip = src_if.local_ip6
+            ip_layer = IPv6
+        else:
+            src_ip = src_if.remote_ip4
+            dst_ip = src_if.local_ip4
+            ip_layer = IP
+        res = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+               ip_layer(src=src_ip, dst=dst_ip) /
+               UDP(sport=sport, dport=dport))
+        if natt:
+            # insert non ESP marker
+            res = res / Raw(b'\x00' * 4)
+        return res / msg
+
+    def verify_udp(self, udp):
+        self.assertEqual(udp.sport, self.sa.sport)
+        self.assertEqual(udp.dport, self.sa.dport)
+
+    def get_ike_header(self, packet):
+        try:
+            ih = packet[ikev2.IKEv2]
+            ih = self.verify_and_remove_non_esp_marker(ih)
+        except IndexError as e:
+            # this is a workaround for getting IKEv2 layer as both ikev2 and
+            # ipsec register for port 4500
+            esp = packet[ESP]
+            ih = self.verify_and_remove_non_esp_marker(esp)
+        self.assertEqual(ih.version, 0x20)
+        self.assertNotIn('Version', ih.flags)
+        return ih
+
+    def verify_and_remove_non_esp_marker(self, packet):
+        if self.sa.natt:
+            # if we are in nat traversal mode check for non esp marker
+            # and remove it
+            data = raw(packet)
+            self.assertEqual(data[:4], b'\x00' * 4)
+            return ikev2.IKEv2(data[4:])
+        else:
+            return packet
+
+    def encrypt_ike_msg(self, header, plain, first_payload):
+        if self.sa.ike_crypto == 'AES-GCM-16ICV':
+            data = self.sa.ike_crypto_alg.pad(raw(plain))
+            plen = len(data) + GCM_IV_SIZE + GCM_ICV_SIZE +\
+                len(ikev2.IKEv2_payload_Encrypted())
+            tlen = plen + len(ikev2.IKEv2())
+
+            # prepare aad data
+            sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+                                                 length=plen)
+            header.length = tlen
+            res = header / sk_p
+            encr = self.sa.encrypt(raw(plain), raw(res))
+            sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+                                                 length=plen, load=encr)
+            res = header / sk_p
+        else:
+            encr = self.sa.encrypt(raw(plain))
+            trunc_len = self.sa.ike_integ_alg.trunc_len
+            plen = len(encr) + len(ikev2.IKEv2_payload_Encrypted()) + trunc_len
+            tlen = plen + len(ikev2.IKEv2())
+
+            sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+                                                 length=plen, load=encr)
+            header.length = tlen
+            res = header / sk_p
+
+            integ_data = raw(res)
+            hmac_data = self.sa.compute_hmac(self.sa.ike_integ_alg.mod(),
+                                             self.sa.my_authkey, integ_data)
+            res = res / Raw(hmac_data[:trunc_len])
+        assert(len(res) == tlen)
+        return res
+
+    def verify_udp_encap(self, ipsec_sa):
+        e = VppEnum.vl_api_ipsec_sad_flags_t
+        if self.sa.udp_encap or self.sa.natt:
+            self.assertIn(e.IPSEC_API_SAD_FLAG_UDP_ENCAP, ipsec_sa.flags)
+        else:
+            self.assertNotIn(e.IPSEC_API_SAD_FLAG_UDP_ENCAP, ipsec_sa.flags)
+
+    def verify_ipsec_sas(self, is_rekey=False):
+        sas = self.vapi.ipsec_sa_dump()
+        if is_rekey:
+            # after rekey there is a short period of time in which old
+            # inbound SA is still present
+            sa_count = 3
+        else:
+            sa_count = 2
+        self.assertEqual(len(sas), sa_count)
+        if self.sa.is_initiator:
+            if is_rekey:
+                sa0 = sas[0].entry
+                sa1 = sas[2].entry
+            else:
+                sa0 = sas[0].entry
+                sa1 = sas[1].entry
+        else:
+            if is_rekey:
+                sa0 = sas[2].entry
+                sa1 = sas[0].entry
+            else:
+                sa1 = sas[0].entry
+                sa0 = sas[1].entry
+
+        c = self.sa.child_sas[0]
+
+        self.verify_udp_encap(sa0)
+        self.verify_udp_encap(sa1)
+        vpp_crypto_alg = self.vpp_enums[self.sa.vpp_esp_cypto_alg]
+        self.assertEqual(sa0.crypto_algorithm, vpp_crypto_alg)
+        self.assertEqual(sa1.crypto_algorithm, vpp_crypto_alg)
+
+        if self.sa.esp_integ is None:
+            vpp_integ_alg = 0
+        else:
+            vpp_integ_alg = self.vpp_enums[self.sa.esp_integ]
+        self.assertEqual(sa0.integrity_algorithm, vpp_integ_alg)
+        self.assertEqual(sa1.integrity_algorithm, vpp_integ_alg)
+
+        # verify crypto keys
+        self.assertEqual(sa0.crypto_key.length, len(c.sk_er))
+        self.assertEqual(sa1.crypto_key.length, len(c.sk_ei))
+        self.assertEqual(sa0.crypto_key.data[:len(c.sk_er)], c.sk_er)
+        self.assertEqual(sa1.crypto_key.data[:len(c.sk_ei)], c.sk_ei)
+
+        # verify integ keys
+        if vpp_integ_alg:
+            self.assertEqual(sa0.integrity_key.length, len(c.sk_ar))
+            self.assertEqual(sa1.integrity_key.length, len(c.sk_ai))
+            self.assertEqual(sa0.integrity_key.data[:len(c.sk_ar)], c.sk_ar)
+            self.assertEqual(sa1.integrity_key.data[:len(c.sk_ai)], c.sk_ai)
+        else:
+            self.assertEqual(sa0.salt.to_bytes(4, 'little'), c.salt_er)
+            self.assertEqual(sa1.salt.to_bytes(4, 'little'), c.salt_ei)
+
+    def verify_keymat(self, api_keys, keys, name):
+        km = getattr(keys, name)
+        api_km = getattr(api_keys, name)
+        api_km_len = getattr(api_keys, name + '_len')
+        self.assertEqual(len(km), api_km_len)
+        self.assertEqual(km, api_km[:api_km_len])
+
+    def verify_id(self, api_id, exp_id):
+        self.assertEqual(api_id.type, IDType.value(exp_id.type))
+        self.assertEqual(api_id.data_len, exp_id.data_len)
+        self.assertEqual(bytes(api_id.data, 'ascii'), exp_id.type)
+
+    def verify_ike_sas(self):
+        r = self.vapi.ikev2_sa_dump()
+        self.assertEqual(len(r), 1)
+        sa = r[0].sa
+        self.assertEqual(self.sa.ispi, (sa.ispi).to_bytes(8, 'big'))
+        self.assertEqual(self.sa.rspi, (sa.rspi).to_bytes(8, 'big'))
+        if self.ip6:
+            if self.sa.is_initiator:
+                self.assertEqual(sa.iaddr, IPv6Address(self.pg0.remote_ip6))
+                self.assertEqual(sa.raddr, IPv6Address(self.pg0.local_ip6))
+            else:
+                self.assertEqual(sa.iaddr, IPv6Address(self.pg0.local_ip6))
+                self.assertEqual(sa.raddr, IPv6Address(self.pg0.remote_ip6))
+        else:
+            if self.sa.is_initiator:
+                self.assertEqual(sa.iaddr, IPv4Address(self.pg0.remote_ip4))
+                self.assertEqual(sa.raddr, IPv4Address(self.pg0.local_ip4))
+            else:
+                self.assertEqual(sa.iaddr, IPv4Address(self.pg0.local_ip4))
+                self.assertEqual(sa.raddr, IPv4Address(self.pg0.remote_ip4))
+        self.verify_keymat(sa.keys, self.sa, 'sk_d')
+        self.verify_keymat(sa.keys, self.sa, 'sk_ai')
+        self.verify_keymat(sa.keys, self.sa, 'sk_ar')
+        self.verify_keymat(sa.keys, self.sa, 'sk_ei')
+        self.verify_keymat(sa.keys, self.sa, 'sk_er')
+        self.verify_keymat(sa.keys, self.sa, 'sk_pi')
+        self.verify_keymat(sa.keys, self.sa, 'sk_pr')
+
+        self.assertEqual(sa.i_id.type, self.sa.id_type)
+        self.assertEqual(sa.r_id.type, self.sa.id_type)
+        self.assertEqual(sa.i_id.data_len, len(self.sa.i_id))
+        self.assertEqual(sa.r_id.data_len, len(self.sa.r_id))
+        self.assertEqual(bytes(sa.i_id.data, 'ascii'), self.sa.i_id)
+        self.assertEqual(bytes(sa.r_id.data, 'ascii'), self.sa.r_id)
+
+        r = self.vapi.ikev2_child_sa_dump(sa_index=sa.sa_index)
+        self.assertEqual(len(r), 1)
+        csa = r[0].child_sa
+        self.assertEqual(csa.sa_index, sa.sa_index)
+        c = self.sa.child_sas[0]
+        if hasattr(c, 'sk_ai'):
+            self.verify_keymat(csa.keys, c, 'sk_ai')
+            self.verify_keymat(csa.keys, c, 'sk_ar')
+        self.verify_keymat(csa.keys, c, 'sk_ei')
+        self.verify_keymat(csa.keys, c, 'sk_er')
+        self.assertEqual(csa.i_spi.to_bytes(4, 'big'), c.ispi)
+        self.assertEqual(csa.r_spi.to_bytes(4, 'big'), c.rspi)
+
+        tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+        tsi = tsi[0]
+        tsr = tsr[0]
+        r = self.vapi.ikev2_traffic_selector_dump(
+                is_initiator=True, sa_index=sa.sa_index,
+                child_sa_index=csa.child_sa_index)
+        self.assertEqual(len(r), 1)
+        ts = r[0].ts
+        self.verify_ts(r[0].ts, tsi[0], True)
+
+        r = self.vapi.ikev2_traffic_selector_dump(
+                is_initiator=False, sa_index=sa.sa_index,
+                child_sa_index=csa.child_sa_index)
+        self.assertEqual(len(r), 1)
+        self.verify_ts(r[0].ts, tsr[0], False)
+
+        n = self.vapi.ikev2_nonce_get(is_initiator=True,
+                                      sa_index=sa.sa_index)
+        self.verify_nonce(n, self.sa.i_nonce)
+        n = self.vapi.ikev2_nonce_get(is_initiator=False,
+                                      sa_index=sa.sa_index)
+        self.verify_nonce(n, self.sa.r_nonce)
+
+    def verify_nonce(self, api_nonce, nonce):
+        self.assertEqual(api_nonce.data_len, len(nonce))
+        self.assertEqual(api_nonce.nonce, nonce)
+
+    def verify_ts(self, api_ts, ts, is_initiator):
+        if is_initiator:
+            self.assertTrue(api_ts.is_local)
+        else:
+            self.assertFalse(api_ts.is_local)
+
+        if self.p.ts_is_ip4:
+            self.assertEqual(api_ts.start_addr,
+                             IPv4Address(ts.starting_address_v4))
+            self.assertEqual(api_ts.end_addr,
+                             IPv4Address(ts.ending_address_v4))
+        else:
+            self.assertEqual(api_ts.start_addr,
+                             IPv6Address(ts.starting_address_v6))
+            self.assertEqual(api_ts.end_addr,
+                             IPv6Address(ts.ending_address_v6))
+        self.assertEqual(api_ts.start_port, ts.start_port)
+        self.assertEqual(api_ts.end_port, ts.end_port)
+        self.assertEqual(api_ts.protocol_id, ts.IP_protocol_ID)
+
+
+class TemplateInitiator(IkePeer):
+    """ initiator test template """
+
+    def initiate_del_sa_from_initiator(self):
+        ispi = int.from_bytes(self.sa.ispi, 'little')
+        self.pg0.enable_capture()
+        self.pg_start()
+        self.vapi.ikev2_initiate_del_ike_sa(ispi=ispi)
+        capture = self.pg0.get_capture(1)
+        ih = self.get_ike_header(capture[0])
+        self.assertNotIn('Response', ih.flags)
+        self.assertIn('Initiator', ih.flags)
+        self.assertEqual(ih.init_SPI, self.sa.ispi)
+        self.assertEqual(ih.resp_SPI, self.sa.rspi)
+        plain = self.sa.hmac_and_decrypt(ih)
+        d = ikev2.IKEv2_payload_Delete(plain)
+        self.assertEqual(d.proto, 1)  # proto=IKEv2
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             flags='Response', exch_type='INFORMATIONAL',
+                             id=ih.id, next_payload='Encrypted')
+        resp = self.encrypt_ike_msg(header, b'', None)
+        self.send_and_assert_no_replies(self.pg0, resp)
+
+    def verify_del_sa(self, packet):
+        ih = self.get_ike_header(packet)
+        self.assertEqual(ih.id, self.sa.msg_id)
+        self.assertEqual(ih.exch_type, 37)  # exchange informational
+        self.assertIn('Response', ih.flags)
+        self.assertIn('Initiator', ih.flags)
+        plain = self.sa.hmac_and_decrypt(ih)
+        self.assertEqual(plain, b'')
+
+    def initiate_del_sa_from_responder(self):
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             exch_type='INFORMATIONAL',
+                             id=self.sa.new_msg_id())
+        del_sa = ikev2.IKEv2_payload_Delete(proto='IKEv2')
+        ike_msg = self.encrypt_ike_msg(header, del_sa, 'Delete')
+        packet = self.create_packet(self.pg0, ike_msg,
+                                    self.sa.sport, self.sa.dport,
+                                    self.sa.natt, self.ip6)
+        self.pg0.add_stream(packet)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        self.verify_del_sa(capture[0])
+
+    @staticmethod
+    def find_notify_payload(packet, notify_type):
+        n = packet[ikev2.IKEv2_payload_Notify]
+        while n is not None:
+            if n.type == notify_type:
+                return n
+            n = n.payload
+        return None
+
+    def verify_nat_detection(self, packet):
+        if self.ip6:
+            iph = packet[IPv6]
+        else:
+            iph = packet[IP]
+        udp = packet[UDP]
+
+        # NAT_DETECTION_SOURCE_IP
+        s = self.find_notify_payload(packet, 16388)
+        self.assertIsNotNone(s)
+        src_sha = self.sa.compute_nat_sha1(
+                inet_pton(socket.AF_INET, iph.src), udp.sport, b'\x00' * 8)
+        self.assertEqual(s.load, src_sha)
+
+        # NAT_DETECTION_DESTINATION_IP
+        s = self.find_notify_payload(packet, 16389)
+        self.assertIsNotNone(s)
+        dst_sha = self.sa.compute_nat_sha1(
+                inet_pton(socket.AF_INET, iph.dst), udp.dport, b'\x00' * 8)
+        self.assertEqual(s.load, dst_sha)
+
+    def verify_sa_init_request(self, packet):
+        udp = packet[UDP]
+        self.sa.dport = udp.sport
+        ih = packet[ikev2.IKEv2]
+        self.assertNotEqual(ih.init_SPI, 8 * b'\x00')
+        self.assertEqual(ih.exch_type, 34)  # SA_INIT
+        self.sa.ispi = ih.init_SPI
+        self.assertEqual(ih.resp_SPI, 8 * b'\x00')
+        self.assertIn('Initiator', ih.flags)
+        self.assertNotIn('Response', ih.flags)
+        self.sa.i_nonce = ih[ikev2.IKEv2_payload_Nonce].load
+        self.sa.i_dh_data = ih[ikev2.IKEv2_payload_KE].load
+
+        prop = packet[ikev2.IKEv2_payload_Proposal]
+        self.assertEqual(prop.proto, 1)  # proto = ikev2
+        self.assertEqual(prop.proposal, 1)
+        self.assertEqual(prop.trans[0].transform_type, 1)  # encryption
+        self.assertEqual(prop.trans[0].transform_id,
+                         self.p.ike_transforms['crypto_alg'])
+        self.assertEqual(prop.trans[1].transform_type, 2)  # prf
+        self.assertEqual(prop.trans[1].transform_id, 5)  # "hmac-sha2-256"
+        self.assertEqual(prop.trans[2].transform_type, 4)  # dh
+        self.assertEqual(prop.trans[2].transform_id,
+                         self.p.ike_transforms['dh_group'])
+
+        self.verify_nat_detection(packet)
+        self.sa.set_ike_props(
+                    crypto='AES-GCM-16ICV', crypto_key_len=32,
+                    integ='NULL', prf='PRF_HMAC_SHA2_256', dh='3072MODPgr')
+        self.sa.set_esp_props(crypto='AES-CBC', crypto_key_len=32,
+                              integ='SHA2-256-128')
+        self.sa.generate_dh_data()
+        self.sa.complete_dh_data()
+        self.sa.calc_keys()
+
+    def update_esp_transforms(self, trans, sa):
+        while trans:
+            if trans.transform_type == 1:  # ecryption
+                sa.esp_crypto = CRYPTO_IDS[trans.transform_id]
+            elif trans.transform_type == 3:  # integrity
+                sa.esp_integ = INTEG_IDS[trans.transform_id]
+            trans = trans.payload
+
+    def verify_sa_auth_req(self, packet):
+        udp = packet[UDP]
+        self.sa.dport = udp.sport
+        ih = self.get_ike_header(packet)
+        self.assertEqual(ih.resp_SPI, self.sa.rspi)
+        self.assertEqual(ih.init_SPI, self.sa.ispi)
+        self.assertEqual(ih.exch_type, 35)  # IKE_AUTH
+        self.assertIn('Initiator', ih.flags)
+        self.assertNotIn('Response', ih.flags)
+
+        udp = packet[UDP]
+        self.verify_udp(udp)
+        self.assertEqual(ih.id, self.sa.msg_id + 1)
+        self.sa.msg_id += 1
+        plain = self.sa.hmac_and_decrypt(ih)
+        idi = ikev2.IKEv2_payload_IDi(plain)
+        idr = ikev2.IKEv2_payload_IDr(idi.payload)
+        self.assertEqual(idi.load, self.sa.i_id)
+        self.assertEqual(idr.load, self.sa.r_id)
+        prop = idi[ikev2.IKEv2_payload_Proposal]
+        c = self.sa.child_sas[0]
+        c.ispi = prop.SPI
+        self.update_esp_transforms(
+                prop[ikev2.IKEv2_payload_Transform], self.sa)
+
+    def send_init_response(self):
+        tr_attr = self.sa.ike_crypto_attr()
+        trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+                 transform_id=self.sa.ike_crypto, length=tr_attr[1],
+                 key_length=tr_attr[0]) /
+                 ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+                 transform_id=self.sa.ike_integ) /
+                 ikev2.IKEv2_payload_Transform(transform_type='PRF',
+                 transform_id=self.sa.ike_prf_alg.name) /
+                 ikev2.IKEv2_payload_Transform(transform_type='GroupDesc',
+                 transform_id=self.sa.ike_dh))
+        props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='IKEv2',
+                 trans_nb=4, trans=trans))
+
+        src_address = inet_pton(socket.AF_INET, self.pg0.remote_ip4)
+        if self.sa.natt:
+            dst_address = b'\x0a\x0a\x0a\x0a'
+        else:
+            dst_address = inet_pton(socket.AF_INET, self.pg0.local_ip4)
+        src_nat = self.sa.compute_nat_sha1(src_address, self.sa.sport)
+        dst_nat = self.sa.compute_nat_sha1(dst_address, self.sa.dport)
+
+        self.sa.init_resp_packet = (
+            ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                        exch_type='IKE_SA_INIT', flags='Response') /
+            ikev2.IKEv2_payload_SA(next_payload='KE', prop=props) /
+            ikev2.IKEv2_payload_KE(next_payload='Nonce',
+                                   group=self.sa.ike_dh,
+                                   load=self.sa.my_dh_pub_key) /
+            ikev2.IKEv2_payload_Nonce(load=self.sa.r_nonce,
+                                      next_payload='Notify') /
+            ikev2.IKEv2_payload_Notify(
+                    type='NAT_DETECTION_SOURCE_IP', load=src_nat,
+                    next_payload='Notify') / ikev2.IKEv2_payload_Notify(
+                    type='NAT_DETECTION_DESTINATION_IP', load=dst_nat))
+
+        ike_msg = self.create_packet(self.pg0, self.sa.init_resp_packet,
+                                     self.sa.sport, self.sa.dport,
+                                     False, self.ip6)
+        self.pg_send(self.pg0, ike_msg)
+        capture = self.pg0.get_capture(1)
+        self.verify_sa_auth_req(capture[0])
+
+    def initiate_sa_init(self):
+        self.pg0.enable_capture()
+        self.pg_start()
+        self.vapi.ikev2_initiate_sa_init(name=self.p.profile_name)
+
+        capture = self.pg0.get_capture(1)
+        self.verify_sa_init_request(capture[0])
+        self.send_init_response()
+
+    def send_auth_response(self):
+        tr_attr = self.sa.esp_crypto_attr()
+        trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+                 transform_id=self.sa.esp_crypto, length=tr_attr[1],
+                 key_length=tr_attr[0]) /
+                 ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+                 transform_id=self.sa.esp_integ) /
+                 ikev2.IKEv2_payload_Transform(
+                 transform_type='Extended Sequence Number',
+                 transform_id='No ESN') /
+                 ikev2.IKEv2_payload_Transform(
+                 transform_type='Extended Sequence Number',
+                 transform_id='ESN'))
+
+        c = self.sa.child_sas[0]
+        props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='ESP',
+                 SPIsize=4, SPI=c.rspi, trans_nb=4, trans=trans))
+
+        tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+        plain = (ikev2.IKEv2_payload_IDi(next_payload='IDr',
+                 IDtype=self.sa.id_type, load=self.sa.i_id) /
+                 ikev2.IKEv2_payload_IDr(next_payload='AUTH',
+                 IDtype=self.sa.id_type, load=self.sa.r_id) /
+                 ikev2.IKEv2_payload_AUTH(next_payload='SA',
+                 auth_type=AuthMethod.value(self.sa.auth_method),
+                 load=self.sa.auth_data) /
+                 ikev2.IKEv2_payload_SA(next_payload='TSi', prop=props) /
+                 ikev2.IKEv2_payload_TSi(next_payload='TSr',
+                 number_of_TSs=len(tsi),
+                 traffic_selector=tsi) /
+                 ikev2.IKEv2_payload_TSr(next_payload='Notify',
+                 number_of_TSs=len(tsr),
+                 traffic_selector=tsr) /
+                 ikev2.IKEv2_payload_Notify(type='INITIAL_CONTACT'))
+
+        header = ikev2.IKEv2(
+                init_SPI=self.sa.ispi,
+                resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+                flags='Response', exch_type='IKE_AUTH')
+
+        ike_msg = self.encrypt_ike_msg(header, plain, 'IDi')
+        packet = self.create_packet(self.pg0, ike_msg, self.sa.sport,
+                                    self.sa.dport, self.sa.natt, self.ip6)
+        self.pg_send(self.pg0, packet)
+
+    def test_initiator(self):
+        self.initiate_sa_init()
+        self.sa.auth_init()
+        self.sa.calc_child_keys()
+        self.send_auth_response()
+        self.verify_ike_sas()
+
+
+class TemplateResponder(IkePeer):
+    """ responder test template """
+
+    def initiate_del_sa_from_responder(self):
+        self.pg0.enable_capture()
+        self.pg_start()
+        self.vapi.ikev2_initiate_del_ike_sa(
+                ispi=int.from_bytes(self.sa.ispi, 'little'))
+        capture = self.pg0.get_capture(1)
+        ih = self.get_ike_header(capture[0])
+        self.assertNotIn('Response', ih.flags)
+        self.assertNotIn('Initiator', ih.flags)
+        self.assertEqual(ih.exch_type, 37)  # INFORMATIONAL
+        plain = self.sa.hmac_and_decrypt(ih)
+        d = ikev2.IKEv2_payload_Delete(plain)
+        self.assertEqual(d.proto, 1)  # proto=IKEv2
+        self.assertEqual(ih.init_SPI, self.sa.ispi)
+        self.assertEqual(ih.resp_SPI, self.sa.rspi)
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             flags='Initiator+Response',
+                             exch_type='INFORMATIONAL',
+                             id=ih.id, next_payload='Encrypted')
+        resp = self.encrypt_ike_msg(header, b'', None)
+        self.send_and_assert_no_replies(self.pg0, resp)
+
+    def verify_del_sa(self, packet):
+        ih = self.get_ike_header(packet)
+        self.assertEqual(ih.id, self.sa.msg_id)
+        self.assertEqual(ih.exch_type, 37)  # exchange informational
+        self.assertIn('Response', ih.flags)
+        self.assertNotIn('Initiator', ih.flags)
+        self.assertEqual(ih.next_payload, 46)  # Encrypted
+        self.assertEqual(ih.init_SPI, self.sa.ispi)
+        self.assertEqual(ih.resp_SPI, self.sa.rspi)
+        plain = self.sa.hmac_and_decrypt(ih)
+        self.assertEqual(plain, b'')
+
+    def initiate_del_sa_from_initiator(self):
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             flags='Initiator', exch_type='INFORMATIONAL',
+                             id=self.sa.new_msg_id())
+        del_sa = ikev2.IKEv2_payload_Delete(proto='IKEv2')
+        ike_msg = self.encrypt_ike_msg(header, del_sa, 'Delete')
+        packet = self.create_packet(self.pg0, ike_msg,
+                                    self.sa.sport, self.sa.dport,
+                                    self.sa.natt, self.ip6)
+        self.pg0.add_stream(packet)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        self.verify_del_sa(capture[0])
+
+    def send_sa_init_req(self):
+        tr_attr = self.sa.ike_crypto_attr()
+        trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+                 transform_id=self.sa.ike_crypto, length=tr_attr[1],
+                 key_length=tr_attr[0]) /
+                 ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+                 transform_id=self.sa.ike_integ) /
+                 ikev2.IKEv2_payload_Transform(transform_type='PRF',
+                 transform_id=self.sa.ike_prf_alg.name) /
+                 ikev2.IKEv2_payload_Transform(transform_type='GroupDesc',
+                 transform_id=self.sa.ike_dh))
+
+        props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='IKEv2',
+                 trans_nb=4, trans=trans))
+
+        next_payload = None if self.ip6 else 'Notify'
+
+        self.sa.init_req_packet = (
+                ikev2.IKEv2(init_SPI=self.sa.ispi,
+                            flags='Initiator', exch_type='IKE_SA_INIT') /
+                ikev2.IKEv2_payload_SA(next_payload='KE', prop=props) /
+                ikev2.IKEv2_payload_KE(next_payload='Nonce',
+                                       group=self.sa.ike_dh,
+                                       load=self.sa.my_dh_pub_key) /
+                ikev2.IKEv2_payload_Nonce(next_payload=next_payload,
+                                          load=self.sa.i_nonce))
+
+        if not self.ip6:
+            if self.sa.i_natt:
+                src_address = b'\x0a\x0a\x0a\x01'
+            else:
+                src_address = inet_pton(socket.AF_INET, self.pg0.remote_ip4)
+
+            if self.sa.r_natt:
+                dst_address = b'\x0a\x0a\x0a\x0a'
+            else:
+                dst_address = inet_pton(socket.AF_INET, self.pg0.local_ip4)
+
+            src_nat = self.sa.compute_nat_sha1(src_address, self.sa.sport)
+            dst_nat = self.sa.compute_nat_sha1(dst_address, self.sa.dport)
+            nat_src_detection = ikev2.IKEv2_payload_Notify(
+                    type='NAT_DETECTION_SOURCE_IP', load=src_nat,
+                    next_payload='Notify')
+            nat_dst_detection = ikev2.IKEv2_payload_Notify(
+                    type='NAT_DETECTION_DESTINATION_IP', load=dst_nat)
+            self.sa.init_req_packet = (self.sa.init_req_packet /
+                                       nat_src_detection /
+                                       nat_dst_detection)
+
+        ike_msg = self.create_packet(self.pg0, self.sa.init_req_packet,
+                                     self.sa.sport, self.sa.dport,
+                                     self.sa.natt, self.ip6)
+        self.pg0.add_stream(ike_msg)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        self.verify_sa_init(capture[0])
+
+    def generate_auth_payload(self, last_payload=None, is_rekey=False):
+        tr_attr = self.sa.esp_crypto_attr()
+        last_payload = last_payload or 'Notify'
+        trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+                 transform_id=self.sa.esp_crypto, length=tr_attr[1],
+                 key_length=tr_attr[0]) /
+                 ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+                 transform_id=self.sa.esp_integ) /
+                 ikev2.IKEv2_payload_Transform(
+                 transform_type='Extended Sequence Number',
+                 transform_id='No ESN') /
+                 ikev2.IKEv2_payload_Transform(
+                 transform_type='Extended Sequence Number',
+                 transform_id='ESN'))
+
+        c = self.sa.child_sas[0]
+        props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='ESP',
+                 SPIsize=4, SPI=c.ispi, trans_nb=4, trans=trans))
+
+        tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+        plain = (ikev2.IKEv2_payload_AUTH(next_payload='SA',
+                 auth_type=AuthMethod.value(self.sa.auth_method),
+                 load=self.sa.auth_data) /
+                 ikev2.IKEv2_payload_SA(next_payload='TSi', prop=props) /
+                 ikev2.IKEv2_payload_TSi(next_payload='TSr',
+                 number_of_TSs=len(tsi), traffic_selector=tsi) /
+                 ikev2.IKEv2_payload_TSr(next_payload=last_payload,
+                 number_of_TSs=len(tsr), traffic_selector=tsr))
+
+        if is_rekey:
+            first_payload = 'Nonce'
+            plain = (ikev2.IKEv2_payload_Nonce(load=self.sa.i_nonce,
+                     next_payload='SA') / plain /
+                     ikev2.IKEv2_payload_Notify(type='REKEY_SA',
+                     proto='ESP', SPI=c.ispi))
+        else:
+            first_payload = 'IDi'
+            ids = (ikev2.IKEv2_payload_IDi(next_payload='IDr',
+                   IDtype=self.sa.id_type, load=self.sa.i_id) /
+                   ikev2.IKEv2_payload_IDr(next_payload='AUTH',
+                   IDtype=self.sa.id_type, load=self.sa.r_id))
+            plain = ids / plain
+        return plain, first_payload
+
+    def send_sa_auth(self):
+        plain, first_payload = self.generate_auth_payload(
+                    last_payload='Notify')
+        plain = plain / ikev2.IKEv2_payload_Notify(type='INITIAL_CONTACT')
+        header = ikev2.IKEv2(
+                init_SPI=self.sa.ispi,
+                resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+                flags='Initiator', exch_type='IKE_AUTH')
+
+        ike_msg = self.encrypt_ike_msg(header, plain, first_payload)
+        packet = self.create_packet(self.pg0, ike_msg, self.sa.sport,
+                                    self.sa.dport, self.sa.natt, self.ip6)
+        self.pg0.add_stream(packet)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        self.verify_sa_auth_resp(capture[0])
+
+    def verify_sa_init(self, packet):
+        ih = self.get_ike_header(packet)
+
+        self.assertEqual(ih.id, self.sa.msg_id)
+        self.assertEqual(ih.exch_type, 34)
+        self.assertIn('Response', ih.flags)
+        self.assertEqual(ih.init_SPI, self.sa.ispi)
+        self.assertNotEqual(ih.resp_SPI, 0)
+        self.sa.rspi = ih.resp_SPI
+        try:
+            sa = ih[ikev2.IKEv2_payload_SA]
+            self.sa.r_nonce = ih[ikev2.IKEv2_payload_Nonce].load
+            self.sa.r_dh_data = ih[ikev2.IKEv2_payload_KE].load
+        except IndexError as e:
+            self.logger.error("unexpected reply: SA/Nonce/KE payload found!")
+            self.logger.error(ih.show())
+            raise
+        self.sa.complete_dh_data()
+        self.sa.calc_keys()
+        self.sa.auth_init()
+
+    def verify_sa_auth_resp(self, packet):
+        ike = self.get_ike_header(packet)
+        udp = packet[UDP]
+        self.verify_udp(udp)
+        self.assertEqual(ike.id, self.sa.msg_id)
+        plain = self.sa.hmac_and_decrypt(ike)
+        idr = ikev2.IKEv2_payload_IDr(plain)
+        prop = idr[ikev2.IKEv2_payload_Proposal]
+        self.assertEqual(prop.SPIsize, 4)
+        self.sa.child_sas[0].rspi = prop.SPI
+        self.sa.calc_child_keys()
+
+    IKE_NODE_SUFFIX = 'ip4'
+
+    def verify_counters(self):
+        self.assert_counter(2, 'processed', self.IKE_NODE_SUFFIX)
+        self.assert_counter(1, 'init_sa_req', self.IKE_NODE_SUFFIX)
+        self.assert_counter(1, 'ike_auth_req', self.IKE_NODE_SUFFIX)
+
+        r = self.vapi.ikev2_sa_dump()
+        s = r[0].sa.stats
+        self.assertEqual(1, s.n_sa_auth_req)
+        self.assertEqual(1, s.n_sa_init_req)
+
+    def test_responder(self):
+        self.send_sa_init_req()
+        self.send_sa_auth()
+        self.verify_ipsec_sas()
+        self.verify_ike_sas()
+        self.verify_counters()
+
+
+class Ikev2Params(object):
+    def config_params(self, params={}):
+        ec = VppEnum.vl_api_ipsec_crypto_alg_t
+        ei = VppEnum.vl_api_ipsec_integ_alg_t
+        self.vpp_enums = {
+                'AES-CBC-128': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_128,
+                'AES-CBC-192': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_192,
+                'AES-CBC-256': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_256,
+                'AES-GCM-16ICV-128':  ec.IPSEC_API_CRYPTO_ALG_AES_GCM_128,
+                'AES-GCM-16ICV-192':  ec.IPSEC_API_CRYPTO_ALG_AES_GCM_192,
+                'AES-GCM-16ICV-256':  ec.IPSEC_API_CRYPTO_ALG_AES_GCM_256,
+
+                'HMAC-SHA1-96': ei.IPSEC_API_INTEG_ALG_SHA1_96,
+                'SHA2-256-128': ei.IPSEC_API_INTEG_ALG_SHA_256_128,
+                'SHA2-384-192': ei.IPSEC_API_INTEG_ALG_SHA_384_192,
+                'SHA2-512-256': ei.IPSEC_API_INTEG_ALG_SHA_512_256}
+
+        dpd_disabled = True if 'dpd_disabled' not in params else\
+            params['dpd_disabled']
+        if dpd_disabled:
+            self.vapi.cli('ikev2 dpd disable')
+        self.del_sa_from_responder = False if 'del_sa_from_responder'\
+            not in params else params['del_sa_from_responder']
+        i_natt = False if 'i_natt' not in params else params['i_natt']
+        r_natt = False if 'r_natt' not in params else params['r_natt']
+        self.p = Profile(self, 'pr1')
+        self.ip6 = False if 'ip6' not in params else params['ip6']
+
+        if 'auth' in params and params['auth'] == 'rsa-sig':
+            auth_method = 'rsa-sig'
+            work_dir = os.getenv('BR') + '/../src/plugins/ikev2/test/certs/'
+            self.vapi.ikev2_set_local_key(
+                    key_file=work_dir + params['server-key'])
+
+            client_file = work_dir + params['client-cert']
+            server_pem = open(work_dir + params['server-cert']).read()
+            client_priv = open(work_dir + params['client-key']).read()
+            client_priv = load_pem_private_key(str.encode(client_priv), None,
+                                               default_backend())
+            self.peer_cert = x509.load_pem_x509_certificate(
+                    str.encode(server_pem),
+                    default_backend())
+            self.p.add_auth(method='rsa-sig', data=str.encode(client_file))
+            auth_data = None
+        else:
+            auth_data = b'$3cr3tpa$$w0rd'
+            self.p.add_auth(method='shared-key', data=auth_data)
+            auth_method = 'shared-key'
+            client_priv = None
+
+        is_init = True if 'is_initiator' not in params else\
+            params['is_initiator']
+
+        idr = {'id_type': 'fqdn', 'data': b'vpp.home'}
+        idi = {'id_type': 'fqdn', 'data': b'roadwarrior.example.com'}
+        if is_init:
+            self.p.add_local_id(**idr)
+            self.p.add_remote_id(**idi)
+        else:
+            self.p.add_local_id(**idi)
+            self.p.add_remote_id(**idr)
+
+        loc_ts = {'start_addr': '10.10.10.0', 'end_addr': '10.10.10.255'} if\
+            'loc_ts' not in params else params['loc_ts']
+        rem_ts = {'start_addr': '10.0.0.0', 'end_addr': '10.0.0.255'} if\
+            'rem_ts' not in params else params['rem_ts']
+        self.p.add_local_ts(**loc_ts)
+        self.p.add_remote_ts(**rem_ts)
+        if 'responder' in params:
+            self.p.add_responder(params['responder'])
+        if 'ike_transforms' in params:
+            self.p.add_ike_transforms(params['ike_transforms'])
+        if 'esp_transforms' in params:
+            self.p.add_esp_transforms(params['esp_transforms'])
+
+        udp_encap = False if 'udp_encap' not in params else\
+            params['udp_encap']
+        if udp_encap:
+            self.p.set_udp_encap(True)
+
+        if 'responder_hostname' in params:
+            hn = params['responder_hostname']
+            self.p.add_responder_hostname(hn)
+
+            # configure static dns record
+            self.vapi.dns_name_server_add_del(
+                is_ip6=0, is_add=1,
+                server_address=IPv4Address(u'8.8.8.8').packed)
+            self.vapi.dns_enable_disable(enable=1)
+
+            cmd = "dns cache add {} {}".format(hn['hostname'],
+                                               self.pg0.remote_ip4)
+            self.vapi.cli(cmd)
+
+        self.sa = IKEv2SA(self, i_id=idi['data'], r_id=idr['data'],
+                          is_initiator=is_init,
+                          id_type=self.p.local_id['id_type'],
+                          i_natt=i_natt, r_natt=r_natt,
+                          priv_key=client_priv, auth_method=auth_method,
+                          auth_data=auth_data, udp_encap=udp_encap,
+                          local_ts=self.p.remote_ts, remote_ts=self.p.local_ts)
+        if is_init:
+            ike_crypto = ('AES-CBC', 32) if 'ike-crypto' not in params else\
+                params['ike-crypto']
+            ike_integ = 'HMAC-SHA1-96' if 'ike-integ' not in params else\
+                params['ike-integ']
+            ike_dh = '2048MODPgr' if 'ike-dh' not in params else\
+                params['ike-dh']
+
+            esp_crypto = ('AES-CBC', 32) if 'esp-crypto' not in params else\
+                params['esp-crypto']
+            esp_integ = 'HMAC-SHA1-96' if 'esp-integ' not in params else\
+                params['esp-integ']
+
+            self.sa.set_ike_props(
+                    crypto=ike_crypto[0], crypto_key_len=ike_crypto[1],
+                    integ=ike_integ, prf='PRF_HMAC_SHA2_256', dh=ike_dh)
+            self.sa.set_esp_props(
+                    crypto=esp_crypto[0], crypto_key_len=esp_crypto[1],
+                    integ=esp_integ)
+
+
+class TestApi(VppTestCase):
+    """ Test IKEV2 API """
+    @classmethod
+    def setUpClass(cls):
+        super(TestApi, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestApi, cls).tearDownClass()
+
+    def tearDown(self):
+        super(TestApi, self).tearDown()
+        self.p1.remove_vpp_config()
+        self.p2.remove_vpp_config()
+        r = self.vapi.ikev2_profile_dump()
+        self.assertEqual(len(r), 0)
+
+    def configure_profile(self, cfg):
+        p = Profile(self, cfg['name'])
+        p.add_local_id(id_type=cfg['loc_id'][0], data=cfg['loc_id'][1])
+        p.add_remote_id(id_type=cfg['rem_id'][0], data=cfg['rem_id'][1])
+        p.add_local_ts(**cfg['loc_ts'])
+        p.add_remote_ts(**cfg['rem_ts'])
+        p.add_responder(cfg['responder'])
+        p.add_ike_transforms(cfg['ike_ts'])
+        p.add_esp_transforms(cfg['esp_ts'])
+        p.add_auth(**cfg['auth'])
+        p.set_udp_encap(cfg['udp_encap'])
+        p.set_ipsec_over_udp_port(cfg['ipsec_over_udp_port'])
+        if 'lifetime_data' in cfg:
+            p.set_lifetime_data(cfg['lifetime_data'])
+        if 'tun_itf' in cfg:
+            p.set_tunnel_interface(cfg['tun_itf'])
+        if 'natt_disabled' in cfg and cfg['natt_disabled']:
+            p.disable_natt()
+        p.add_vpp_config()
+        return p
+
+    def test_profile_api(self):
+        """ test profile dump API """
+        loc_ts4 = {
+                    'proto': 8,
+                    'start_port': 1,
+                    'end_port': 19,
+                    'start_addr': '3.3.3.2',
+                    'end_addr': '3.3.3.3',
+                }
+        rem_ts4 = {
+                    'proto': 9,
+                    'start_port': 10,
+                    'end_port': 119,
+                    'start_addr': '4.5.76.80',
+                    'end_addr': '2.3.4.6',
+                }
+
+        loc_ts6 = {
+                    'proto': 8,
+                    'start_port': 1,
+                    'end_port': 19,
+                    'start_addr': 'ab::1',
+                    'end_addr': 'ab::4',
+                }
+        rem_ts6 = {
+                    'proto': 9,
+                    'start_port': 10,
+                    'end_port': 119,
+                    'start_addr': 'cd::12',
+                    'end_addr': 'cd::13',
+                }
+
+        conf = {
+            'p1': {
+                'name': 'p1',
+                'natt_disabled': True,
+                'loc_id': ('fqdn', b'vpp.home'),
+                'rem_id': ('fqdn', b'roadwarrior.example.com'),
+                'loc_ts': loc_ts4,
+                'rem_ts': rem_ts4,
+                'responder': {'sw_if_index': 0, 'addr': '5.6.7.8'},
+                'ike_ts': {
+                        'crypto_alg': 20,
+                        'crypto_key_size': 32,
+                        'integ_alg': 1,
+                        'dh_group': 1},
+                'esp_ts': {
+                        'crypto_alg': 13,
+                        'crypto_key_size': 24,
+                        'integ_alg': 2},
+                'auth': {'method': 'shared-key', 'data': b'sharedkeydata'},
+                'udp_encap': True,
+                'ipsec_over_udp_port': 4501,
+                'lifetime_data': {
+                    'lifetime': 123,
+                    'lifetime_maxdata': 20192,
+                    'lifetime_jitter': 9,
+                    'handover': 132},
+            },
+            'p2': {
+                'name': 'p2',
+                'loc_id': ('ip4-addr', b'192.168.2.1'),
+                'rem_id': ('ip6-addr', b'abcd::1'),
+                'loc_ts': loc_ts6,
+                'rem_ts': rem_ts6,
+                'responder': {'sw_if_index': 4, 'addr': 'def::10'},
+                'ike_ts': {
+                        'crypto_alg': 12,
+                        'crypto_key_size': 16,
+                        'integ_alg': 3,
+                        'dh_group': 3},
+                'esp_ts': {
+                        'crypto_alg': 9,
+                        'crypto_key_size': 24,
+                        'integ_alg': 4},
+                'auth': {'method': 'shared-key', 'data': b'sharedkeydata'},
+                'udp_encap': False,
+                'ipsec_over_udp_port': 4600,
+                'tun_itf': 0}
+        }
+        self.p1 = self.configure_profile(conf['p1'])
+        self.p2 = self.configure_profile(conf['p2'])
+
+        r = self.vapi.ikev2_profile_dump()
+        self.assertEqual(len(r), 2)
+        self.verify_profile(r[0].profile, conf['p1'])
+        self.verify_profile(r[1].profile, conf['p2'])
+
+    def verify_id(self, api_id, cfg_id):
+        self.assertEqual(api_id.type, IDType.value(cfg_id[0]))
+        self.assertEqual(bytes(api_id.data, 'ascii'), cfg_id[1])
+
+    def verify_ts(self, api_ts, cfg_ts):
+        self.assertEqual(api_ts.protocol_id, cfg_ts['proto'])
+        self.assertEqual(api_ts.start_port, cfg_ts['start_port'])
+        self.assertEqual(api_ts.end_port, cfg_ts['end_port'])
+        self.assertEqual(api_ts.start_addr,
+                         ip_address(text_type(cfg_ts['start_addr'])))
+        self.assertEqual(api_ts.end_addr,
+                         ip_address(text_type(cfg_ts['end_addr'])))
+
+    def verify_responder(self, api_r, cfg_r):
+        self.assertEqual(api_r.sw_if_index, cfg_r['sw_if_index'])
+        self.assertEqual(api_r.addr, ip_address(cfg_r['addr']))
+
+    def verify_transforms(self, api_ts, cfg_ts):
+        self.assertEqual(api_ts.crypto_alg, cfg_ts['crypto_alg'])
+        self.assertEqual(api_ts.crypto_key_size, cfg_ts['crypto_key_size'])
+        self.assertEqual(api_ts.integ_alg, cfg_ts['integ_alg'])
+
+    def verify_ike_transforms(self, api_ts, cfg_ts):
+        self.verify_transforms(api_ts, cfg_ts)
+        self.assertEqual(api_ts.dh_group, cfg_ts['dh_group'])
+
+    def verify_esp_transforms(self, api_ts, cfg_ts):
+        self.verify_transforms(api_ts, cfg_ts)
+
+    def verify_auth(self, api_auth, cfg_auth):
+        self.assertEqual(api_auth.method, AuthMethod.value(cfg_auth['method']))
+        self.assertEqual(api_auth.data, cfg_auth['data'])
+        self.assertEqual(api_auth.data_len, len(cfg_auth['data']))
+
+    def verify_lifetime_data(self, p, ld):
+        self.assertEqual(p.lifetime, ld['lifetime'])
+        self.assertEqual(p.lifetime_maxdata, ld['lifetime_maxdata'])
+        self.assertEqual(p.lifetime_jitter, ld['lifetime_jitter'])
+        self.assertEqual(p.handover, ld['handover'])
+
+    def verify_profile(self, ap, cp):
+        self.assertEqual(ap.name, cp['name'])
+        self.assertEqual(ap.udp_encap, cp['udp_encap'])
+        self.verify_id(ap.loc_id, cp['loc_id'])
+        self.verify_id(ap.rem_id, cp['rem_id'])
+        self.verify_ts(ap.loc_ts, cp['loc_ts'])
+        self.verify_ts(ap.rem_ts, cp['rem_ts'])
+        self.verify_responder(ap.responder, cp['responder'])
+        self.verify_ike_transforms(ap.ike_ts, cp['ike_ts'])
+        self.verify_esp_transforms(ap.esp_ts, cp['esp_ts'])
+        self.verify_auth(ap.auth, cp['auth'])
+        natt_dis = False if 'natt_disabled' not in cp else cp['natt_disabled']
+        self.assertTrue(natt_dis == ap.natt_disabled)
+
+        if 'lifetime_data' in cp:
+            self.verify_lifetime_data(ap, cp['lifetime_data'])
+        self.assertEqual(ap.ipsec_over_udp_port, cp['ipsec_over_udp_port'])
+        if 'tun_itf' in cp:
+            self.assertEqual(ap.tun_itf, cp['tun_itf'])
+        else:
+            self.assertEqual(ap.tun_itf, 0xffffffff)
+
+
+@tag_fixme_vpp_workers
+class TestResponderBehindNAT(TemplateResponder, Ikev2Params):
+    """ test responder - responder behind NAT """
+
+    IKE_NODE_SUFFIX = 'ip4-natt'
+
+    def config_tc(self):
+        self.config_params({'r_natt': True})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorNATT(TemplateInitiator, Ikev2Params):
+    """ test ikev2 initiator - NAT traversal (intitiator behind NAT) """
+
+    def config_tc(self):
+        self.config_params({
+            'i_natt': True,
+            'is_initiator': False,  # seen from test case perspective
+                                    # thus vpp is initiator
+            'responder': {'sw_if_index': self.pg0.sw_if_index,
+                           'addr': self.pg0.remote_ip4},
+            'ike-crypto': ('AES-GCM-16ICV', 32),
+            'ike-integ': 'NULL',
+            'ike-dh': '3072MODPgr',
+            'ike_transforms': {
+                'crypto_alg': 20,  # "aes-gcm-16"
+                'crypto_key_size': 256,
+                'dh_group': 15,  # "modp-3072"
+            },
+            'esp_transforms': {
+                'crypto_alg': 12,  # "aes-cbc"
+                'crypto_key_size': 256,
+                # "hmac-sha2-256-128"
+                'integ_alg': 12}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorPsk(TemplateInitiator, Ikev2Params):
+    """ test ikev2 initiator - pre shared key auth """
+
+    def config_tc(self):
+        self.config_params({
+            'is_initiator': False,  # seen from test case perspective
+                                    # thus vpp is initiator
+            'ike-crypto': ('AES-GCM-16ICV', 32),
+            'ike-integ': 'NULL',
+            'ike-dh': '3072MODPgr',
+            'ike_transforms': {
+                'crypto_alg': 20,  # "aes-gcm-16"
+                'crypto_key_size': 256,
+                'dh_group': 15,  # "modp-3072"
+            },
+            'esp_transforms': {
+                'crypto_alg': 12,  # "aes-cbc"
+                'crypto_key_size': 256,
+                # "hmac-sha2-256-128"
+                'integ_alg': 12},
+            'responder_hostname': {'hostname': 'vpp.responder.org',
+                                   'sw_if_index': self.pg0.sw_if_index}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorRequestWindowSize(TestInitiatorPsk):
+    """ test initiator - request window size (1) """
+
+    def rekey_respond(self, req, update_child_sa_data):
+        ih = self.get_ike_header(req)
+        plain = self.sa.hmac_and_decrypt(ih)
+        sa = ikev2.IKEv2_payload_SA(plain)
+        if update_child_sa_data:
+            prop = sa[ikev2.IKEv2_payload_Proposal]
+            self.sa.i_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+            self.sa.r_nonce = self.sa.i_nonce
+            self.sa.child_sas[0].ispi = prop.SPI
+            self.sa.child_sas[0].rspi = prop.SPI
+            self.sa.calc_child_keys()
+
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             flags='Response', exch_type=36,
+                             id=ih.id, next_payload='Encrypted')
+        resp = self.encrypt_ike_msg(header, sa, 'SA')
+        packet = self.create_packet(self.pg0, resp, self.sa.sport,
+                                    self.sa.dport, self.sa.natt, self.ip6)
+        self.send_and_assert_no_replies(self.pg0, packet)
+
+    def test_initiator(self):
+        super(TestInitiatorRequestWindowSize, self).test_initiator()
+        self.pg0.enable_capture()
+        self.pg_start()
+        ispi = int.from_bytes(self.sa.child_sas[0].ispi, 'little')
+        self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+        self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+        capture = self.pg0.get_capture(2)
+
+        # reply in reverse order
+        self.rekey_respond(capture[1], True)
+        self.rekey_respond(capture[0], False)
+
+        # verify that only the second request was accepted
+        self.verify_ike_sas()
+        self.verify_ipsec_sas(is_rekey=True)
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorRekey(TestInitiatorPsk):
+    """ test ikev2 initiator - rekey """
+
+    def rekey_from_initiator(self):
+        ispi = int.from_bytes(self.sa.child_sas[0].ispi, 'little')
+        self.pg0.enable_capture()
+        self.pg_start()
+        self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+        capture = self.pg0.get_capture(1)
+        ih = self.get_ike_header(capture[0])
+        self.assertEqual(ih.exch_type, 36)  # CHILD_SA
+        self.assertNotIn('Response', ih.flags)
+        self.assertIn('Initiator', ih.flags)
+        plain = self.sa.hmac_and_decrypt(ih)
+        sa = ikev2.IKEv2_payload_SA(plain)
+        prop = sa[ikev2.IKEv2_payload_Proposal]
+        self.sa.i_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+        self.sa.r_nonce = self.sa.i_nonce
+        # update new responder SPI
+        self.sa.child_sas[0].ispi = prop.SPI
+        self.sa.child_sas[0].rspi = prop.SPI
+        self.sa.calc_child_keys()
+        header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+                             flags='Response', exch_type=36,
+                             id=ih.id, next_payload='Encrypted')
+        resp = self.encrypt_ike_msg(header, sa, 'SA')
+        packet = self.create_packet(self.pg0, resp, self.sa.sport,
+                                    self.sa.dport, self.sa.natt, self.ip6)
+        self.send_and_assert_no_replies(self.pg0, packet)
+
+    def test_initiator(self):
+        super(TestInitiatorRekey, self).test_initiator()
+        self.rekey_from_initiator()
+        self.verify_ike_sas()
+        self.verify_ipsec_sas(is_rekey=True)
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorDelSAFromResponder(TemplateInitiator, Ikev2Params):
+    """ test ikev2 initiator - delete IKE SA from responder """
+
+    def config_tc(self):
+        self.config_params({
+            'del_sa_from_responder': True,
+            'is_initiator': False,  # seen from test case perspective
+                                    # thus vpp is initiator
+            'responder': {'sw_if_index': self.pg0.sw_if_index,
+                           'addr': self.pg0.remote_ip4},
+            'ike-crypto': ('AES-GCM-16ICV', 32),
+            'ike-integ': 'NULL',
+            'ike-dh': '3072MODPgr',
+            'ike_transforms': {
+                'crypto_alg': 20,  # "aes-gcm-16"
+                'crypto_key_size': 256,
+                'dh_group': 15,  # "modp-3072"
+            },
+            'esp_transforms': {
+                'crypto_alg': 12,  # "aes-cbc"
+                'crypto_key_size': 256,
+                # "hmac-sha2-256-128"
+                'integ_alg': 12}})
+
+
+@tag_fixme_vpp_workers
+class TestResponderInitBehindNATT(TemplateResponder, Ikev2Params):
+    """ test ikev2 responder - initiator behind NAT """
+
+    IKE_NODE_SUFFIX = 'ip4-natt'
+
+    def config_tc(self):
+        self.config_params(
+                {'i_natt': True})
+
+
+@tag_fixme_vpp_workers
+class TestResponderPsk(TemplateResponder, Ikev2Params):
+    """ test ikev2 responder - pre shared key auth """
+    def config_tc(self):
+        self.config_params()
+
+
+@tag_fixme_vpp_workers
+class TestResponderDpd(TestResponderPsk):
+    """
+    Dead peer detection test
+    """
+    def config_tc(self):
+        self.config_params({'dpd_disabled': False})
+
+    def tearDown(self):
+        pass
+
+    def test_responder(self):
+        self.vapi.ikev2_profile_set_liveness(period=2, max_retries=1)
+        super(TestResponderDpd, self).test_responder()
+        self.pg0.enable_capture()
+        self.pg_start()
+        # capture empty request but don't reply
+        capture = self.pg0.get_capture(expected_count=1, timeout=5)
+        ih = self.get_ike_header(capture[0])
+        self.assertEqual(ih.exch_type, 37)  # INFORMATIONAL
+        plain = self.sa.hmac_and_decrypt(ih)
+        self.assertEqual(plain, b'')
+        # wait for SA expiration
+        time.sleep(3)
+        ike_sas = self.vapi.ikev2_sa_dump()
+        self.assertEqual(len(ike_sas), 0)
+        ipsec_sas = self.vapi.ipsec_sa_dump()
+        self.assertEqual(len(ipsec_sas), 0)
+
+
+@tag_fixme_vpp_workers
+class TestResponderRekey(TestResponderPsk):
+    """ test ikev2 responder - rekey """
+
+    def rekey_from_initiator(self):
+        packet = self.create_rekey_request()
+        self.pg0.add_stream(packet)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        ih = self.get_ike_header(capture[0])
+        plain = self.sa.hmac_and_decrypt(ih)
+        sa = ikev2.IKEv2_payload_SA(plain)
+        prop = sa[ikev2.IKEv2_payload_Proposal]
+        self.sa.r_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+        # update new responder SPI
+        self.sa.child_sas[0].rspi = prop.SPI
+
+    def test_responder(self):
+        super(TestResponderRekey, self).test_responder()
+        self.rekey_from_initiator()
+        self.sa.calc_child_keys()
+        self.verify_ike_sas()
+        self.verify_ipsec_sas(is_rekey=True)
+        self.assert_counter(1, 'rekey_req', 'ip4')
+        r = self.vapi.ikev2_sa_dump()
+        self.assertEqual(r[0].sa.stats.n_rekey_req, 1)
+
+
+class TestResponderVrf(TestResponderPsk, Ikev2Params):
+    """ test ikev2 responder - non-default table id """
+
+    @classmethod
+    def setUpClass(cls):
+        import scapy.contrib.ikev2 as _ikev2
+        globals()['ikev2'] = _ikev2
+        super(IkePeer, cls).setUpClass()
+        cls.create_pg_interfaces(range(1))
+        cls.vapi.cli("ip table add 1")
+        cls.vapi.cli("set interface ip table pg0 1")
+        for i in cls.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def config_tc(self):
+        self.config_params({'dpd_disabled': False})
+
+    def test_responder(self):
+        self.vapi.ikev2_profile_set_liveness(period=2, max_retries=1)
+        super(TestResponderVrf, self).test_responder()
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(expected_count=1, timeout=5)
+        ih = self.get_ike_header(capture[0])
+        self.assertEqual(ih.exch_type, 37)  # INFORMATIONAL
+        plain = self.sa.hmac_and_decrypt(ih)
+        self.assertEqual(plain, b'')
+
+
+@tag_fixme_vpp_workers
+class TestResponderRsaSign(TemplateResponder, Ikev2Params):
+    """ test ikev2 responder - cert based auth """
+    def config_tc(self):
+        self.config_params({
+            'udp_encap': True,
+            'auth': 'rsa-sig',
+            'server-key': 'server-key.pem',
+            'client-key': 'client-key.pem',
+            'client-cert': 'client-cert.pem',
+            'server-cert': 'server-cert.pem'})
+
+
+@tag_fixme_vpp_workers
+class Test_IKE_AES_CBC_128_SHA256_128_MODP2048_ESP_AES_CBC_192_SHA_384_192\
+        (TemplateResponder, Ikev2Params):
+    """
+    IKE:AES_CBC_128_SHA256_128,DH=modp2048 ESP:AES_CBC_192_SHA_384_192
+    """
+    def config_tc(self):
+        self.config_params({
+            'ike-crypto': ('AES-CBC', 16),
+            'ike-integ': 'SHA2-256-128',
+            'esp-crypto': ('AES-CBC', 24),
+            'esp-integ': 'SHA2-384-192',
+            'ike-dh': '2048MODPgr'})
+
+
+@tag_fixme_vpp_workers
+class TestAES_CBC_128_SHA256_128_MODP3072_ESP_AES_GCM_16\
+        (TemplateResponder, Ikev2Params):
+
+    """
+    IKE:AES_CBC_128_SHA256_128,DH=modp3072 ESP:AES_GCM_16
+    """
+    def config_tc(self):
+        self.config_params({
+            'ike-crypto': ('AES-CBC', 32),
+            'ike-integ': 'SHA2-256-128',
+            'esp-crypto': ('AES-GCM-16ICV', 32),
+            'esp-integ': 'NULL',
+            'ike-dh': '3072MODPgr'})
+
+
+@tag_fixme_vpp_workers
+class Test_IKE_AES_GCM_16_256(TemplateResponder, Ikev2Params):
+    """
+    IKE:AES_GCM_16_256
+    """
+
+    IKE_NODE_SUFFIX = 'ip6'
+
+    def config_tc(self):
+        self.config_params({
+            'del_sa_from_responder': True,
+            'ip6': True,
+            'natt': True,
+            'ike-crypto': ('AES-GCM-16ICV', 32),
+            'ike-integ': 'NULL',
+            'ike-dh': '2048MODPgr',
+            'loc_ts': {'start_addr': 'ab:cd::0',
+                       'end_addr': 'ab:cd::10'},
+            'rem_ts': {'start_addr': '11::0',
+                       'end_addr': '11::100'}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorKeepaliveMsg(TestInitiatorPsk):
+    """
+    Test for keep alive messages
+    """
+
+    def send_empty_req_from_responder(self):
+        packet = self.create_empty_request()
+        self.pg0.add_stream(packet)
+        self.pg0.enable_capture()
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        ih = self.get_ike_header(capture[0])
+        self.assertEqual(ih.id, self.sa.msg_id)
+        plain = self.sa.hmac_and_decrypt(ih)
+        self.assertEqual(plain, b'')
+        self.assert_counter(1, 'keepalive', 'ip4')
+        r = self.vapi.ikev2_sa_dump()
+        self.assertEqual(1, r[0].sa.stats.n_keepalives)
+
+    def test_initiator(self):
+        super(TestInitiatorKeepaliveMsg, self).test_initiator()
+        self.send_empty_req_from_responder()
+
+
+class TestMalformedMessages(TemplateResponder, Ikev2Params):
+    """ malformed packet test """
+
+    def tearDown(self):
+        pass
+
+    def config_tc(self):
+        self.config_params()
+
+    def create_ike_init_msg(self, length=None, payload=None):
+        msg = ikev2.IKEv2(length=length, init_SPI='\x11' * 8,
+                          flags='Initiator', exch_type='IKE_SA_INIT')
+        if payload is not None:
+            msg /= payload
+        return self.create_packet(self.pg0, msg, self.sa.sport,
+                                  self.sa.dport)
+
+    def verify_bad_packet_length(self):
+        ike_msg = self.create_ike_init_msg(length=0xdead)
+        self.send_and_assert_no_replies(self.pg0, ike_msg * self.pkt_count)
+        self.assert_counter(self.pkt_count, 'bad_length')
+
+    def verify_bad_sa_payload_length(self):
+        p = ikev2.IKEv2_payload_SA(length=0xdead)
+        ike_msg = self.create_ike_init_msg(payload=p)
+        self.send_and_assert_no_replies(self.pg0, ike_msg * self.pkt_count)
+        self.assert_counter(self.pkt_count, 'malformed_packet')
+
+    def test_responder(self):
+        self.pkt_count = 254
+        self.verify_bad_packet_length()
+        self.verify_bad_sa_payload_length()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_ipsec_nat.py b/test/test_ipsec_nat.py
new file mode 100644
index 0000000..dcedf64
--- /dev/null
+++ b/test/test_ipsec_nat.py
@@ -0,0 +1,271 @@
+#!/usr/bin/env python3
+
+import socket
+
+import scapy.compat
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import ICMP, IP, TCP, UDP
+from scapy.layers.ipsec import SecurityAssociation, ESP
+
+from util import ppp, ppc
+from template_ipsec import TemplateIpsec
+from vpp_ipsec import VppIpsecSA, VppIpsecSpd, VppIpsecSpdEntry,\
+        VppIpsecSpdItfBinding
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import DpoProto
+from vpp_papi import VppEnum
+
+
+class IPSecNATTestCase(TemplateIpsec):
+    """ IPSec/NAT
+    TUNNEL MODE:
+
+
+     public network  |   private network
+     ---   encrypt  ---   plain   ---
+    |pg0| <------- |VPP| <------ |pg1|
+     ---            ---           ---
+
+     ---   decrypt  ---   plain   ---
+    |pg0| -------> |VPP| ------> |pg1|
+     ---            ---           ---
+    """
+
+    tcp_port_in = 6303
+    tcp_port_out = 6303
+    udp_port_in = 6304
+    udp_port_out = 6304
+    icmp_id_in = 6305
+    icmp_id_out = 6305
+
+    @classmethod
+    def setUpClass(cls):
+        super(IPSecNATTestCase, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(IPSecNATTestCase, cls).tearDownClass()
+
+    def setUp(self):
+        super(IPSecNATTestCase, self).setUp()
+        self.tun_if = self.pg0
+
+        self.tun_spd = VppIpsecSpd(self, self.tun_spd_id)
+        self.tun_spd.add_vpp_config()
+        VppIpsecSpdItfBinding(self, self.tun_spd,
+                              self.tun_if).add_vpp_config()
+
+        p = self.ipv4_params
+        self.config_esp_tun(p)
+        self.logger.info(self.vapi.ppcli("show ipsec all"))
+
+        d = DpoProto.DPO_PROTO_IP6 if p.is_ipv6 else DpoProto.DPO_PROTO_IP4
+        VppIpRoute(self,  p.remote_tun_if_host, p.addr_len,
+                   [VppRoutePath(self.tun_if.remote_addr[p.addr_type],
+                                 0xffffffff,
+                                 proto=d)]).add_vpp_config()
+
+    def tearDown(self):
+        super(IPSecNATTestCase, self).tearDown()
+
+    def create_stream_plain(self, src_mac, dst_mac, src_ip, dst_ip):
+        return [
+            # TCP
+            Ether(src=src_mac, dst=dst_mac) /
+            IP(src=src_ip, dst=dst_ip) /
+            TCP(sport=self.tcp_port_in, dport=20),
+            # UDP
+            Ether(src=src_mac, dst=dst_mac) /
+            IP(src=src_ip, dst=dst_ip) /
+            UDP(sport=self.udp_port_in, dport=20),
+            # ICMP
+            Ether(src=src_mac, dst=dst_mac) /
+            IP(src=src_ip, dst=dst_ip) /
+            ICMP(id=self.icmp_id_in, type='echo-request')
+        ]
+
+    def create_stream_encrypted(self, src_mac, dst_mac, src_ip, dst_ip, sa):
+        return [
+            # TCP
+            Ether(src=src_mac, dst=dst_mac) /
+            sa.encrypt(IP(src=src_ip, dst=dst_ip) /
+                       TCP(dport=self.tcp_port_out, sport=20)),
+            # UDP
+            Ether(src=src_mac, dst=dst_mac) /
+            sa.encrypt(IP(src=src_ip, dst=dst_ip) /
+                       UDP(dport=self.udp_port_out, sport=20)),
+            # ICMP
+            Ether(src=src_mac, dst=dst_mac) /
+            sa.encrypt(IP(src=src_ip, dst=dst_ip) /
+                       ICMP(id=self.icmp_id_out, type='echo-request'))
+        ]
+
+    def verify_capture_plain(self, capture):
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assert_equal(packet[IP].src, self.tun_if.remote_ip4,
+                                  "decrypted packet source address")
+                self.assert_equal(packet[IP].dst, self.pg1.remote_ip4,
+                                  "decrypted packet destination address")
+                if packet.haslayer(TCP):
+                    self.assertFalse(
+                        packet.haslayer(UDP),
+                        "unexpected UDP header in decrypted packet")
+                    self.assert_equal(packet[TCP].dport, self.tcp_port_in,
+                                      "decrypted packet TCP destination port")
+                elif packet.haslayer(UDP):
+                    if packet[UDP].payload:
+                        self.assertFalse(
+                            packet[UDP][1].haslayer(UDP),
+                            "unexpected UDP header in decrypted packet")
+                    self.assert_equal(packet[UDP].dport, self.udp_port_in,
+                                      "decrypted packet UDP destination port")
+                else:
+                    self.assertFalse(
+                        packet.haslayer(UDP),
+                        "unexpected UDP header in decrypted packet")
+                    self.assert_equal(packet[ICMP].id, self.icmp_id_in,
+                                      "decrypted packet ICMP ID")
+            except Exception:
+                self.logger.error(
+                    ppp("Unexpected or invalid plain packet:", packet))
+                raise
+
+    def verify_capture_encrypted(self, capture, sa):
+        for packet in capture:
+            try:
+                copy = packet.__class__(scapy.compat.raw(packet))
+                del copy[UDP].len
+                copy = packet.__class__(scapy.compat.raw(copy))
+                self.assert_equal(packet[UDP].len, copy[UDP].len,
+                                  "UDP header length")
+                self.assert_packet_checksums_valid(packet)
+                self.assertIn(ESP, packet[IP])
+                decrypt_pkt = sa.decrypt(packet[IP])
+                self.assert_packet_checksums_valid(decrypt_pkt)
+                self.assert_equal(decrypt_pkt[IP].src, self.pg1.remote_ip4,
+                                  "encrypted packet source address")
+                self.assert_equal(decrypt_pkt[IP].dst, self.tun_if.remote_ip4,
+                                  "encrypted packet destination address")
+            except Exception:
+                self.logger.error(
+                    ppp("Unexpected or invalid encrypted packet:", packet))
+                raise
+
+    def config_esp_tun(self, params):
+        addr_type = params.addr_type
+        scapy_tun_sa_id = params.scapy_tun_sa_id
+        scapy_tun_spi = params.scapy_tun_spi
+        vpp_tun_sa_id = params.vpp_tun_sa_id
+        vpp_tun_spi = params.vpp_tun_spi
+        auth_algo_vpp_id = params.auth_algo_vpp_id
+        auth_key = params.auth_key
+        crypt_algo_vpp_id = params.crypt_algo_vpp_id
+        crypt_key = params.crypt_key
+        addr_any = params.addr_any
+        addr_bcast = params.addr_bcast
+        flags = (VppEnum.vl_api_ipsec_sad_flags_t.
+                 IPSEC_API_SAD_FLAG_UDP_ENCAP)
+        e = VppEnum.vl_api_ipsec_spd_action_t
+
+        VppIpsecSA(self, scapy_tun_sa_id, scapy_tun_spi,
+                   auth_algo_vpp_id, auth_key,
+                   crypt_algo_vpp_id, crypt_key,
+                   self.vpp_esp_protocol,
+                   self.pg1.remote_addr[addr_type],
+                   self.tun_if.remote_addr[addr_type],
+                   flags=flags).add_vpp_config()
+        VppIpsecSA(self, vpp_tun_sa_id, vpp_tun_spi,
+                   auth_algo_vpp_id, auth_key,
+                   crypt_algo_vpp_id, crypt_key,
+                   self.vpp_esp_protocol,
+                   self.tun_if.remote_addr[addr_type],
+                   self.pg1.remote_addr[addr_type],
+                   flags=flags).add_vpp_config()
+
+        VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+                         addr_any, addr_bcast,
+                         addr_any, addr_bcast,
+                         socket.IPPROTO_ESP).add_vpp_config()
+        VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+                         addr_any, addr_bcast,
+                         addr_any, addr_bcast,
+                         socket.IPPROTO_ESP,
+                         is_outbound=0).add_vpp_config()
+        VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+                         addr_any, addr_bcast,
+                         addr_any, addr_bcast,
+                         socket.IPPROTO_UDP,
+                         remote_port_start=4500,
+                         remote_port_stop=4500).add_vpp_config()
+        VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+                         addr_any, addr_bcast,
+                         addr_any, addr_bcast,
+                         socket.IPPROTO_UDP,
+                         remote_port_start=4500,
+                         remote_port_stop=4500,
+                         is_outbound=0).add_vpp_config()
+        VppIpsecSpdEntry(self, self.tun_spd, vpp_tun_sa_id,
+                         self.tun_if.remote_addr[addr_type],
+                         self.tun_if.remote_addr[addr_type],
+                         self.pg1.remote_addr[addr_type],
+                         self.pg1.remote_addr[addr_type],
+                         0, priority=10,
+                         policy=e.IPSEC_API_SPD_ACTION_PROTECT,
+                         is_outbound=0).add_vpp_config()
+        VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+                         self.pg1.remote_addr[addr_type],
+                         self.pg1.remote_addr[addr_type],
+                         self.tun_if.remote_addr[addr_type],
+                         self.tun_if.remote_addr[addr_type],
+                         0, policy=e.IPSEC_API_SPD_ACTION_PROTECT,
+                         priority=10).add_vpp_config()
+
+    def test_ipsec_nat_tun(self):
+        """ IPSec/NAT tunnel test case """
+        p = self.ipv4_params
+        scapy_tun_sa = SecurityAssociation(ESP, spi=p.scapy_tun_spi,
+                                           crypt_algo=p.crypt_algo,
+                                           crypt_key=p.crypt_key,
+                                           auth_algo=p.auth_algo,
+                                           auth_key=p.auth_key,
+                                           tunnel_header=IP(
+                                               src=self.pg1.remote_ip4,
+                                               dst=self.tun_if.remote_ip4),
+                                           nat_t_header=UDP(
+                                               sport=4500,
+                                               dport=4500))
+        # in2out - from private network to public
+        pkts = self.create_stream_plain(
+            self.pg1.remote_mac, self.pg1.local_mac,
+            self.pg1.remote_ip4, self.tun_if.remote_ip4)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.tun_if.get_capture(len(pkts))
+        self.verify_capture_encrypted(capture, scapy_tun_sa)
+
+        vpp_tun_sa = SecurityAssociation(ESP,
+                                         spi=p.vpp_tun_spi,
+                                         crypt_algo=p.crypt_algo,
+                                         crypt_key=p.crypt_key,
+                                         auth_algo=p.auth_algo,
+                                         auth_key=p.auth_key,
+                                         tunnel_header=IP(
+                                             src=self.tun_if.remote_ip4,
+                                             dst=self.pg1.remote_ip4),
+                                         nat_t_header=UDP(
+                                             sport=4500,
+                                             dport=4500))
+
+        # out2in - from public network to private
+        pkts = self.create_stream_encrypted(
+            self.tun_if.remote_mac, self.tun_if.local_mac,
+            self.tun_if.remote_ip4, self.pg1.remote_ip4, vpp_tun_sa)
+        self.logger.info(ppc("Sending packets:", pkts))
+        self.tun_if.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_plain(capture)
diff --git a/test/test_l2tp.py b/test/test_l2tp.py
new file mode 100644
index 0000000..5a66523
--- /dev/null
+++ b/test/test_l2tp.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from scapy.layers.l2 import Ether
+from scapy.layers.inet6 import IPv6
+
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase
+
+
+@tag_fixme_vpp_workers
+class TestL2tp(VppTestCase):
+    """ L2TP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestL2tp, cls).setUpClass()
+
+        cls.create_pg_interfaces(range(1))
+        cls.pg0.admin_up()
+        cls.pg0.config_ip6()
+
+    def test_l2tp_decap_local(self):
+        """ L2TP don't accept packets unless configured """
+
+        pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=115))
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        # l2tp should not accept packets
+        err = self.statistics.get_counter(
+            '/err/l2tp-decap-local/l2tpv3 session not found')[0]
+        self.assertEqual(err, 0)
+        err_count = err
+
+        self.vapi.l2tpv3_create_tunnel(client_address=self.pg0.local_ip6,
+                                       our_address=self.pg0.remote_ip6)
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        # l2tp accepts packets
+        err = self.statistics.get_counter(
+            '/err/l2tp-decap-local/l2tpv3 session not found')[0]
+        self.assertEqual(err, 1)
+        err_count = err
diff --git a/test/test_l3xc.py b/test/test_l3xc.py
new file mode 100644
index 0000000..d7a8297
--- /dev/null
+++ b/test/test_l3xc.py
@@ -0,0 +1,152 @@
+#!/usr/bin/env python3
+
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsLabel, VppIpTable
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+
+from vpp_object import VppObject
+
+NUM_PKTS = 67
+
+
+def find_l3xc(test, sw_if_index, dump_sw_if_index=None):
+    if not dump_sw_if_index:
+        dump_sw_if_index = sw_if_index
+    xcs = test.vapi.l3xc_dump(dump_sw_if_index)
+    for xc in xcs:
+        if sw_if_index == xc.l3xc.sw_if_index:
+            return True
+    return False
+
+
+class VppL3xc(VppObject):
+
+    def __init__(self,  test, intf, paths, is_ip6=False):
+        self._test = test
+        self.intf = intf
+        self.is_ip6 = is_ip6
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+
+    def add_vpp_config(self):
+        self._test.vapi.l3xc_update(
+            l3xc={
+                'is_ip6': self.is_ip6,
+                'sw_if_index': self.intf.sw_if_index,
+                'n_paths': len(self.paths),
+                'paths': self.encoded_paths
+            })
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.l3xc_del(
+            is_ip6=self.is_ip6,
+            sw_if_index=self.intf.sw_if_index)
+
+    def query_vpp_config(self):
+        return find_l3xc(self._test, self.intf.sw_if_index)
+
+    def object_id(self):
+        return ("l3xc-%d" % self.intf.sw_if_index)
+
+
+class TestL3xc(VppTestCase):
+    """ L3XC Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestL3xc, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestL3xc, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestL3xc, self).setUp()
+
+        self.create_pg_interfaces(range(6))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestL3xc, self).tearDown()
+
+    def send_and_expect_load_balancing(self, input, pkts, outputs):
+        self.pg_send(input, pkts)
+        rxs = []
+        for oo in outputs:
+            rx = oo._get_capture(1)
+            self.assertNotEqual(0, len(rx))
+            for r in rx:
+                rxs.append(r)
+        return rxs
+
+    def test_l3xc4(self):
+        """ IPv4 X-Connect """
+
+        #
+        # x-connect pg0 to pg1 and pg2 to pg3->5
+        #
+        l3xc_1 = VppL3xc(self, self.pg0,
+                         [VppRoutePath(self.pg1.remote_ip4,
+                                       self.pg1.sw_if_index)])
+        l3xc_1.add_vpp_config()
+        l3xc_2 = VppL3xc(self, self.pg2,
+                         [VppRoutePath(self.pg3.remote_ip4,
+                                       self.pg3.sw_if_index),
+                          VppRoutePath(self.pg4.remote_ip4,
+                                       self.pg4.sw_if_index),
+                          VppRoutePath(self.pg5.remote_ip4,
+                                       self.pg5.sw_if_index)])
+        l3xc_2.add_vpp_config()
+
+        self.assertTrue(find_l3xc(self, self.pg2.sw_if_index, 0xffffffff))
+
+        self.logger.info(self.vapi.cli("sh l3xc"))
+
+        #
+        # fire in packets. If it's forwarded then the L3XC was successful,
+        # since default routing will drop it
+        #
+        p_1 = (Ether(src=self.pg0.remote_mac,
+                     dst=self.pg0.local_mac) /
+               IP(src="1.1.1.1", dst="1.1.1.2") /
+               UDP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 100))
+        # self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg1)
+
+        p_2 = []
+        for ii in range(NUM_PKTS):
+            p_2.append(Ether(src=self.pg0.remote_mac,
+                             dst=self.pg0.local_mac) /
+                       IP(src="1.1.1.1", dst="1.1.1.2") /
+                       UDP(sport=1000 + ii, dport=1234) /
+                       Raw(b'\xa5' * 100))
+        self.send_and_expect_load_balancing(self.pg2, p_2,
+                                            [self.pg3, self.pg4, self.pg5])
+
+        l3xc_2.remove_vpp_config()
+        self.send_and_assert_no_replies(self.pg2, p_2)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_lacp.py b/test/test_lacp.py
new file mode 100644
index 0000000..b5f2dae
--- /dev/null
+++ b/test/test_lacp.py
@@ -0,0 +1,364 @@
+#!/usr/bin/env python3
+
+import time
+import unittest
+
+from scapy.contrib.lacp import LACP, SlowProtocol, MarkerProtocol
+from scapy.layers.l2 import Ether
+
+from framework import VppTestCase, VppTestRunner
+from vpp_memif import remove_all_memif_vpp_config, VppSocketFilename, VppMemif
+from vpp_bond_interface import VppBondInterface
+from vpp_papi import VppEnum, MACAddress
+
+bond_mac = "02:02:02:02:02:02"
+lacp_dst_mac = '01:80:c2:00:00:02'
+LACP_COLLECTION_AND_DISTRIBUTION_STATE = 63
+
+
+class TestMarker(VppTestCase):
+    """LACP Marker Protocol Test Case
+
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        # Test variables
+        cls.pkts_per_burst = 257    # Number of packets per burst
+        # create 3 pg interfaces
+        cls.create_pg_interfaces(range(1))
+
+        # packet sizes
+        cls.pg_if_packet_sizes = [64, 512, 1518]  # , 9018]
+
+        # setup all interfaces
+        for i in cls.pg_interfaces:
+            i.admin_up()
+
+    @classmethod
+    def tearDownClass(cls):
+        super().tearDownClass()
+
+    def setUp(self):
+        super().setUp()
+
+    def tearDown(self):
+        super().tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.ppcli("show interface"))
+
+    def test_marker_request(self):
+        """ Marker Request test """
+
+        # topology
+        #
+        #             +-+      +-+
+        # memif1 -----|B|      |B|---- memif11
+        #             |o|      |o|
+        #             |n|------|n|
+        #             |d|      |d|
+        # pg0    -----|0|      |1|
+        #             +-+      +-+
+
+        socket1 = VppSocketFilename(
+            self,
+            socket_id=1,
+            socket_filename="%s/memif.sock1" % self.tempdir)
+        socket1.add_vpp_config()
+
+        socket11 = VppSocketFilename(
+            self,
+            socket_id=2,
+            socket_filename="%s/memif.sock1" % self.tempdir)
+        socket11.add_vpp_config()
+
+        memif1 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=1)
+        memif1.add_vpp_config()
+        memif1.admin_up()
+
+        memif11 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=2)
+        memif11.add_vpp_config()
+        memif11.admin_up()
+
+        bond0 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP,
+            use_custom_mac=1,
+            mac_address=bond_mac)
+
+        bond0.add_vpp_config()
+        bond0.admin_up()
+
+        bond1 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP)
+        bond1.add_vpp_config()
+        bond1.admin_up()
+
+        bond0.add_member_vpp_bond_interface(sw_if_index=memif1.sw_if_index)
+        bond1.add_member_vpp_bond_interface(sw_if_index=memif11.sw_if_index)
+
+        # wait for memif protocol exchange and hardware carrier to come up
+        self.assertEqual(memif1.wait_for_link_up(10), True)
+        self.assertEqual(memif11.wait_for_link_up(10), True)
+
+        # verify memif1 in bond0
+        intfs = self.vapi.sw_member_interface_dump(
+            sw_if_index=bond0.sw_if_index)
+        for intf in intfs:
+            self.assertEqual(intf.sw_if_index, memif1.sw_if_index)
+
+        # verify memif11 in bond1
+        intfs = self.vapi.sw_member_interface_dump(
+            sw_if_index=bond1.sw_if_index)
+        for intf in intfs:
+            self.assertEqual(intf.sw_if_index, memif11.sw_if_index)
+
+        self.vapi.ppcli("trace add memif-input 100")
+
+        # create marker request
+        marker = (Ether(src=bond_mac, dst=lacp_dst_mac) /
+                  SlowProtocol() /
+                  MarkerProtocol(marker_type=1,
+                                 requester_port=1,
+                                 requester_system=bond_mac,
+                                 requester_transaction_id=1))
+
+        bond1.add_member_vpp_bond_interface(sw_if_index=self.pg0.sw_if_index)
+        self.pg0.add_stream(marker)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        show_trace = self.vapi.ppcli("show trace max 100")
+        self.assertIn("Marker Information TLV:", show_trace)
+
+        bond0.remove_vpp_config()
+        bond1.remove_vpp_config()
+
+
+class TestLACP(VppTestCase):
+    """LACP Test Case
+
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super().tearDownClass()
+
+    def setUp(self):
+        super().setUp()
+
+    def tearDown(self):
+        super().tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.ppcli("show interface"))
+
+    def wait_for_lacp_connect(self, timeout, step=1):
+        while 1:
+            intfs = self.vapi.sw_interface_lacp_dump()
+            all_good = 1
+            for intf in intfs:
+                if ((intf.actor_state !=
+                     LACP_COLLECTION_AND_DISTRIBUTION_STATE) or
+                    (intf.partner_state !=
+                     LACP_COLLECTION_AND_DISTRIBUTION_STATE)):
+                    all_good = 0
+            if (all_good == 1):
+                return 1
+            self.sleep(step)
+            timeout -= step
+            if timeout <= 0:
+                return 0
+
+    def wait_for_member_detach(self, bond, timeout, count, step=1):
+        while 1:
+            intfs = self.vapi.sw_bond_interface_dump(
+                sw_if_index=bond.sw_if_index)
+            for intf in intfs:
+                if ((intf.members == count) and
+                        (intf.active_members == count)):
+                    return 1
+                else:
+                    self.sleep(1)
+                    timeout -= step
+                    if (timeouut <= 0):
+                        return 0
+
+    def test_lacp_connect(self):
+        """ LACP protocol connect test """
+
+        # topology
+        #
+        #             +-+      +-+
+        # memif1 -----|B|      |B|---- memif11
+        #             |o|      |o|
+        #             |n|------|n|
+        #             |d|      |d|
+        # memif2 -----|0|      |1|---- memif12
+        #             +-+      +-+
+
+        socket1 = VppSocketFilename(
+            self,
+            socket_id=1,
+            socket_filename="%s/memif.sock1" % self.tempdir)
+        socket1.add_vpp_config()
+
+        socket11 = VppSocketFilename(
+            self,
+            socket_id=2,
+            socket_filename="%s/memif.sock1" % self.tempdir)
+        socket11.add_vpp_config()
+
+        socket2 = VppSocketFilename(
+            self,
+            socket_id=3,
+            socket_filename="%s/memif.sock2" % self.tempdir)
+        socket2.add_vpp_config()
+
+        socket22 = VppSocketFilename(
+            self,
+            socket_id=4,
+            socket_filename="%s/memif.sock2" % self.tempdir)
+        socket22.add_vpp_config()
+
+        memif1 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=1)
+        memif1.add_vpp_config()
+        memif1.admin_up()
+
+        memif11 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=2)
+        memif11.add_vpp_config()
+        memif11.admin_up()
+
+        memif2 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=3)
+        memif2.add_vpp_config()
+        memif2.admin_up()
+
+        memif12 = VppMemif(
+            self,
+            role=VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            mode=VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=4)
+        memif12.add_vpp_config()
+        memif12.admin_up()
+
+        self.logger.info(self.vapi.ppcli("debug lacp on"))
+        bond0 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP,
+            use_custom_mac=1,
+            mac_address=bond_mac)
+
+        bond0.add_vpp_config()
+        bond0.admin_up()
+
+        bond1 = VppBondInterface(
+            self,
+            mode=VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP)
+        bond1.add_vpp_config()
+        bond1.admin_up()
+
+        # add member memif1 and memif2 to bond0
+        bond0.add_member_vpp_bond_interface(sw_if_index=memif1.sw_if_index)
+        bond0.add_member_vpp_bond_interface(sw_if_index=memif2.sw_if_index)
+
+        # add member memif11 and memif12 to bond1
+        bond1.add_member_vpp_bond_interface(sw_if_index=memif11.sw_if_index)
+        bond1.add_member_vpp_bond_interface(sw_if_index=memif12.sw_if_index)
+
+        # wait for memif protocol exchange and hardware carrier to come up
+        self.assertEqual(memif1.wait_for_link_up(10), True)
+        self.assertEqual(memif2.wait_for_link_up(10), True)
+        self.assertEqual(memif11.wait_for_link_up(10), True)
+        self.assertEqual(memif12.wait_for_link_up(10), True)
+
+        # verify memif1 and memif2 in bond0
+        intfs = self.vapi.sw_member_interface_dump(
+            sw_if_index=bond0.sw_if_index)
+        for intf in intfs:
+            self.assertIn(
+                intf.sw_if_index, (memif1.sw_if_index, memif2.sw_if_index))
+
+        # verify memif11 and memif12 in bond1
+        intfs = self.vapi.sw_member_interface_dump(
+            sw_if_index=bond1.sw_if_index)
+        for intf in intfs:
+            self.assertIn(
+                intf.sw_if_index, (memif11.sw_if_index, memif12.sw_if_index))
+            self.assertEqual(intf.is_long_timeout, 0)
+            self.assertEqual(intf.is_passive, 0)
+
+        # Let LACP create the bundle
+        self.wait_for_lacp_connect(30)
+
+        intfs = self.vapi.sw_interface_lacp_dump()
+        for intf in intfs:
+            self.assertEqual(
+                intf.actor_state, LACP_COLLECTION_AND_DISTRIBUTION_STATE)
+            self.assertEqual(
+                intf.partner_state, LACP_COLLECTION_AND_DISTRIBUTION_STATE)
+
+        intfs = self.vapi.sw_bond_interface_dump(sw_if_index=0xFFFFFFFF)
+        for intf in intfs:
+            self.assertEqual(intf.members, 2)
+            self.assertEqual(intf.active_members, 2)
+            self.assertEqual(
+                intf.mode, VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP)
+
+        self.logger.info(self.vapi.ppcli("show lacp"))
+        self.logger.info(self.vapi.ppcli("show lacp details"))
+
+        # detach member memif1
+        bond0.detach_vpp_bond_interface(sw_if_index=memif1.sw_if_index)
+
+        self.wait_for_member_detach(bond0, timeout=10, count=1)
+        intfs = self.vapi.sw_bond_interface_dump(
+            sw_if_index=bond0.sw_if_index)
+        for intf in intfs:
+            self.assertEqual(intf.members, 1)
+            self.assertEqual(intf.active_members, 1)
+            self.assertEqual(
+                intf.mode, VppEnum.vl_api_bond_mode_t.BOND_API_MODE_LACP)
+
+        # detach member memif2
+        bond0.detach_vpp_bond_interface(sw_if_index=memif2.sw_if_index)
+        self.wait_for_member_detach(bond0, timeout=10, count=0)
+
+        intfs = self.vapi.sw_bond_interface_dump(
+            sw_if_index=bond0.sw_if_index)
+        for intf in intfs:
+            self.assertEqual(intf.members, 0)
+            self.assertEqual(intf.active_members, 0)
+
+        bond0.remove_vpp_config()
+        bond1.remove_vpp_config()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_lb.py b/test/test_lb.py
new file mode 100644
index 0000000..fafb87b
--- /dev/null
+++ b/test/test_lb.py
@@ -0,0 +1,502 @@
+import socket
+
+import scapy.compat
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+from scapy.data import IP_PROTOS
+
+from framework import VppTestCase
+from util import ppp
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+""" TestLB is a subclass of  VPPTestCase classes.
+
+ TestLB class defines Load Balancer test cases for:
+  - IP4 to GRE4 encap on per-port vip case
+  - IP4 to GRE6 encap on per-port vip case
+  - IP6 to GRE4 encap on per-port vip case
+  - IP6 to GRE6 encap on per-port vip case
+  - IP4 to L3DSR encap on vip case
+  - IP4 to L3DSR encap on per-port vip case
+  - IP4 to NAT4 encap on per-port vip case
+  - IP6 to NAT6 encap on per-port vip case
+
+ As stated in comments below, GRE has issues with IPv6.
+ All test cases involving IPv6 are executed, but
+ received packets are not parsed and checked.
+
+"""
+
+
+class TestLB(VppTestCase):
+    """ Load Balancer Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestLB, cls).setUpClass()
+
+        cls.ass = range(5)
+        cls.packets = range(1)
+
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.interfaces = list(cls.pg_interfaces)
+
+            for i in cls.interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.config_ip6()
+                i.disable_ipv6_ra()
+                i.resolve_arp()
+                i.resolve_ndp()
+
+            dst4 = VppIpRoute(cls, "10.0.0.0", 24,
+                              [VppRoutePath(cls.pg1.remote_ip4,
+                                            INVALID_INDEX)],
+                              register=False)
+            dst4.add_vpp_config()
+            dst6 = VppIpRoute(cls, "2002::", 16,
+                              [VppRoutePath(cls.pg1.remote_ip6,
+                                            INVALID_INDEX)],
+                              register=False)
+            dst6.add_vpp_config()
+            cls.vapi.lb_conf(ip4_src_address="39.40.41.42",
+                             ip6_src_address="2004::1")
+        except Exception:
+            super(TestLB, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestLB, cls).tearDownClass()
+
+    def tearDown(self):
+        super(TestLB, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show lb vip verbose"))
+
+    def getIPv4Flow(self, id):
+        return (IP(dst="90.0.%u.%u" % (id / 255, id % 255),
+                   src="40.0.%u.%u" % (id / 255, id % 255)) /
+                UDP(sport=10000 + id, dport=20000))
+
+    def getIPv6Flow(self, id):
+        return (IPv6(dst="2001::%u" % (id), src="fd00:f00d:ffff::%u" % (id)) /
+                UDP(sport=10000 + id, dport=20000))
+
+    def generatePackets(self, src_if, isv4):
+        self.reset_packet_infos()
+        pkts = []
+        for pktid in self.packets:
+            info = self.create_packet_info(src_if, self.pg1)
+            payload = self.info_to_payload(info)
+            ip = self.getIPv4Flow(pktid) if isv4 else self.getIPv6Flow(pktid)
+            packet = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                      ip /
+                      Raw(payload))
+            self.extend_packet(packet, 128)
+            info.data = packet.copy()
+            pkts.append(packet)
+        return pkts
+
+    def checkInner(self, gre, isv4):
+        IPver = IP if isv4 else IPv6
+        self.assertEqual(gre.proto, 0x0800 if isv4 else 0x86DD)
+        self.assertEqual(gre.flags, 0)
+        self.assertEqual(gre.version, 0)
+        inner = IPver(scapy.compat.raw(gre.payload))
+        payload_info = self.payload_to_info(inner[Raw])
+        self.info = self.packet_infos[payload_info.index]
+        self.assertEqual(payload_info.src, self.pg0.sw_if_index)
+        self.assertEqual(scapy.compat.raw(inner),
+                         scapy.compat.raw(self.info.data[IPver]))
+
+    def checkCapture(self, encap, isv4):
+        self.pg0.assert_nothing_captured()
+        out = self.pg1.get_capture(len(self.packets))
+
+        load = [0] * len(self.ass)
+        self.info = None
+        for p in out:
+            try:
+                asid = 0
+                gre = None
+                if (encap == 'gre4'):
+                    ip = p[IP]
+                    asid = int(ip.dst.split(".")[3])
+                    self.assertEqual(ip.version, 4)
+                    self.assertEqual(ip.flags, 0)
+                    self.assertEqual(ip.src, "39.40.41.42")
+                    self.assertEqual(ip.dst, "10.0.0.%u" % asid)
+                    self.assertEqual(ip.proto, 47)
+                    self.assertEqual(len(ip.options), 0)
+                    gre = p[GRE]
+                    self.checkInner(gre, isv4)
+                elif (encap == 'gre6'):
+                    ip = p[IPv6]
+                    asid = ip.dst.split(":")
+                    asid = asid[len(asid) - 1]
+                    asid = 0 if asid == "" else int(asid)
+                    self.assertEqual(ip.version, 6)
+                    self.assertEqual(ip.tc, 0)
+                    self.assertEqual(ip.fl, 0)
+                    self.assertEqual(ip.src, "2004::1")
+                    self.assertEqual(
+                        socket.inet_pton(socket.AF_INET6, ip.dst),
+                        socket.inet_pton(socket.AF_INET6, "2002::%u" % asid)
+                    )
+                    self.assertEqual(ip.nh, 47)
+                    # self.assertEqual(len(ip.options), 0)
+                    gre = GRE(scapy.compat.raw(p[IPv6].payload))
+                    self.checkInner(gre, isv4)
+                elif (encap == 'l3dsr'):
+                    ip = p[IP]
+                    asid = int(ip.dst.split(".")[3])
+                    self.assertEqual(ip.version, 4)
+                    self.assertEqual(ip.flags, 0)
+                    self.assertEqual(ip.dst, "10.0.0.%u" % asid)
+                    self.assertEqual(ip.tos, 0x1c)
+                    self.assertEqual(len(ip.options), 0)
+                    self.assert_ip_checksum_valid(p)
+                    if ip.proto == IP_PROTOS.tcp:
+                        self.assert_tcp_checksum_valid(p)
+                    elif ip.proto == IP_PROTOS.udp:
+                        self.assert_udp_checksum_valid(p)
+                elif (encap == 'nat4'):
+                    ip = p[IP]
+                    asid = int(ip.dst.split(".")[3])
+                    self.assertEqual(ip.version, 4)
+                    self.assertEqual(ip.flags, 0)
+                    self.assertEqual(ip.dst, "10.0.0.%u" % asid)
+                    self.assertEqual(ip.proto, 17)
+                    self.assertEqual(len(ip.options), 0)
+                    udp = p[UDP]
+                    self.assertEqual(udp.dport, 3307)
+                elif (encap == 'nat6'):
+                    ip = p[IPv6]
+                    asid = ip.dst.split(":")
+                    asid = asid[len(asid) - 1]
+                    asid = 0 if asid == "" else int(asid)
+                    self.assertEqual(ip.version, 6)
+                    self.assertEqual(ip.tc, 0)
+                    self.assertEqual(ip.fl, 0)
+                    self.assertEqual(
+                        socket.inet_pton(socket.AF_INET6, ip.dst),
+                        socket.inet_pton(socket.AF_INET6, "2002::%u" % asid)
+                    )
+                    self.assertEqual(ip.nh, 17)
+                    self.assertGreaterEqual(ip.hlim, 63)
+                    udp = UDP(scapy.compat.raw(p[IPv6].payload))
+                    self.assertEqual(udp.dport, 3307)
+                load[asid] += 1
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", p))
+                raise
+
+        # This is just to roughly check that the balancing algorithm
+        # is not completely biased.
+        for asid in self.ass:
+            if load[asid] < int(len(self.packets) / (len(self.ass) * 2)):
+                self.logger.error(
+                    "ASS is not balanced: load[%d] = %d" % (asid, load[asid]))
+                raise Exception("Load Balancer algorithm is biased")
+
+    def test_lb_ip4_gre4(self):
+        """ Load Balancer IP4 GRE4 on vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap gre4")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='gre4', isv4=True)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap gre4 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip6_gre4(self):
+        """ Load Balancer IP6 GRE4 on vip case """
+
+        try:
+            self.vapi.cli(
+                "lb vip 2001::/16 encap gre4")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre4', isv4=False)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 2001::/16 encap gre4 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_gre6(self):
+        """ Load Balancer IP4 GRE6 on vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap gre6")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 2002::%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre6', isv4=True)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 2002::%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap gre6 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip6_gre6(self):
+        """ Load Balancer IP6 GRE6 on vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 2001::/16 encap gre6")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 2002::%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre6', isv4=False)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 2002::%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 2001::/16 encap gre6 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_gre4_port(self):
+        """ Load Balancer IP4 GRE4 on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='gre4', isv4=True)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip6_gre4_port(self):
+        """ Load Balancer IP6 GRE4 on per-port-vip case """
+
+        try:
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap gre4")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre4', isv4=False)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap gre4 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_gre6_port(self):
+        """ Load Balancer IP4 GRE6 on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre6', isv4=True)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip6_gre6_port(self):
+        """ Load Balancer IP6 GRE6 on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap gre6")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 2002::%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+
+            self.checkCapture(encap='gre6', isv4=False)
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 2002::%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap gre6 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_l3dsr(self):
+        """ Load Balancer IP4 L3DSR on vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap l3dsr dscp 7")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='l3dsr', isv4=True)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 encap l3dsr"
+                " dscp 7 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_l3dsr_port(self):
+        """ Load Balancer IP4 L3DSR on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr dscp 7")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='l3dsr', isv4=True)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr"
+                " dscp 7 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip4_nat4_port(self):
+        """ Load Balancer IP4 NAT4 on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4"
+                " type clusterip target_port 3307")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='nat4', isv4=True)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4"
+                " type clusterip target_port 3307 del")
+            self.vapi.cli("test lb flowtable flush")
+
+    def test_lb_ip6_nat6_port(self):
+        """ Load Balancer IP6 NAT6 on per-port-vip case """
+        try:
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap nat6"
+                " type clusterip target_port 3307")
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 2002::%u"
+                    % (asid))
+
+            self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.checkCapture(encap='nat6', isv4=False)
+
+        finally:
+            for asid in self.ass:
+                self.vapi.cli(
+                    "lb as 2001::/16 protocol udp port 20000 2002::%u del"
+                    % (asid))
+            self.vapi.cli(
+                "lb vip 2001::/16 protocol udp port 20000 encap nat6"
+                " type clusterip target_port 3307 del")
+            self.vapi.cli("test lb flowtable flush")
diff --git a/test/test_lb_api.py b/test/test_lb_api.py
new file mode 100644
index 0000000..70d41d4
--- /dev/null
+++ b/test/test_lb_api.py
@@ -0,0 +1,76 @@
+#  Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import framework
+import ipaddress
+
+DEFAULT_VIP = "lb_vip_details(_0=978, context=12, vip=vl_api_lb_ip_addr_t(pfx=IPv6Network(u'::/0'), protocol=<vl_api_ip_proto_t.IP_API_PROTO_RESERVED: 255>, port=0), encap=<vl_api_lb_encap_type_t.LB_API_ENCAP_TYPE_GRE4: 0>, dscp=<vl_api_ip_dscp_t.IP_API_DSCP_CS0: 0>, srv_type=<vl_api_lb_srv_type_t.LB_API_SRV_TYPE_CLUSTERIP: 0>, target_port=0, flow_table_length=0)"  # noqa
+
+
+class TestLbEmptyApi(framework.VppTestCase):
+    """TestLbEmptyApi """
+
+    def test_lb_empty_vip_dump(self):
+
+        # no records should  normally return [], but
+        # lb initializes with a default VIP
+        rv = self.vapi.lb_vip_dump()
+        # print(rv)
+        self.assertEqual(rv, [], 'Expected: [] Received: %r.' % rv)
+
+    def test_lb_empty_as_dump(self):
+
+        # no records should return []
+        rv = self.vapi.lb_as_dump()
+        # print(rv)
+        self.assertEqual(rv, [], 'Expected: [] Received: %r.' % rv)
+
+
+class TestLbApi(framework.VppTestCase):
+    """TestLbApi """
+
+    def test_lb_vip_dump(self):
+        # add some vips
+        # rv = self.vapi.lb_add_del_vip(pfx=ipaddress.IPv4Network(u'1.2.3.0/24'),  # noqa
+        #                               protocol=17,
+        #                               encap=0)
+        # print(rv)
+        self.vapi.cli("lb vip 2001::/16 encap gre6")
+        rv = self.vapi.lb_vip_dump()
+        # print(rv)
+        self.assertEqual(str(rv[-1].vip.pfx), "2001::/16",
+                         'Expected: 2001::/16 Received: %r.' % rv[-1].vip.pfx)
+
+        self.vapi.cli("lb vip 2001::/16 del")
+
+
+class TestLbAsApi(framework.VppTestCase):
+    """TestLbAsApi """
+
+    def test_lb_as_dump(self):
+        # add some vips
+        self.vapi.cli("lb vip 2001::/16 encap gre6")
+        self.vapi.cli("lb as 2001::/16 2000::1")
+        # add some as's for the vips
+        # rv = self.vapi.lb_add_del_as(
+        #     pfx=ipaddress.IPv4Network(u"10.0.0.0/24"),
+        #     as_address=ipaddress.IPv4Address(u"192.168.1.1"))
+
+        # print(rv)
+        rv = self.vapi.lb_as_dump()
+        # print(rv)
+        self.assertEqual(str(rv[0].vip.pfx), "2001::/16",
+                         'Expected: "2001::/16" Received: %r.' % rv[0].vip.pfx)
+        self.assertEqual(str(rv[0].app_srv), "2000::1",
+                         'Expected: "2000::1" Received: %r.' % rv[0].app_srv)
diff --git a/test/test_linux_cp.py b/test/test_linux_cp.py
new file mode 100644
index 0000000..df38681
--- /dev/null
+++ b/test/test_linux_cp.py
@@ -0,0 +1,174 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6, Raw
+from scapy.layers.l2 import Ether, ARP, Dot1Q
+
+from vpp_object import VppObject
+from framework import VppTestCase, VppTestRunner
+
+
+class VppLcpPair(VppObject):
+    def __init__(self, test, phy, host):
+        self._test = test
+        self.phy = phy
+        self.host = host
+
+    def add_vpp_config(self):
+        self._test.vapi.cli("test lcp add phy %s host %s" %
+                            (self.phy, self.host))
+        self._test.registry.register(self, self._test.logger)
+        return self
+
+    def remove_vpp_config(self):
+        self._test.vapi.cli("test lcp del phy %s host %s" %
+                            (self.phy, self.host))
+
+    def object_id(self):
+        return "lcp:%d:%d" % (self.phy.sw_if_index,
+                              self.host.sw_if_index)
+
+    def query_vpp_config(self):
+        pairs = list(self._test.vapi.vpp.details_iter(
+            self._test.vapi.lcp_itf_pair_get))
+
+        for p in pairs:
+            if p.phy_sw_if_index == self.phy.sw_if_index and \
+               p.host_sw_if_index == self.host.sw_if_index:
+                return True
+        return False
+
+
+class TestLinuxCP(VppTestCase):
+    """ Linux Control Plane """
+
+    extra_vpp_plugin_config = ["plugin",
+                               "linux_cp_plugin.so",
+                               "{", "enable", "}",
+                               "plugin",
+                               "linux_cp_unittest_plugin.so",
+                               "{", "enable", "}"]
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestLinuxCP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestLinuxCP, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestLinuxCP, self).setUp()
+
+        # create 4 pg interfaces so there are a few addresses
+        # in the FIB
+        self.create_pg_interfaces(range(4))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.admin_down()
+        super(TestLinuxCP, self).tearDown()
+
+    def test_linux_cp_tap(self):
+        """ Linux CP TAP """
+
+        #
+        # Setup
+        #
+
+        arp_opts = {"who-has": 1, "is-at": 2}
+
+        # create two pairs, wihch a bunch of hots on the phys
+        hosts = [self.pg0, self.pg1]
+        phys = [self.pg2, self.pg3]
+        N_HOSTS = 4
+
+        for phy in phys:
+            phy.config_ip4()
+            phy.generate_remote_hosts(4)
+            phy.configure_ipv4_neighbors()
+
+        pair1 = VppLcpPair(self, phys[0], hosts[0]).add_vpp_config()
+        pair2 = VppLcpPair(self, phys[1], hosts[1]).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh lcp adj verbose"))
+        self.logger.info(self.vapi.cli("sh lcp"))
+
+        #
+        # Traffic Tests
+        #
+
+        # hosts to phys
+        for phy, host in zip(phys, hosts):
+            for j in range(N_HOSTS):
+                p = (Ether(src=phy.local_mac,
+                           dst=phy.remote_hosts[j].mac) /
+                     IP(src=phy.local_ip4,
+                        dst=phy.remote_hosts[j].ip4) /
+                     UDP(sport=1234, dport=1234) /
+                     Raw())
+
+                rxs = self.send_and_expect(host, [p], phy)
+
+                # verify packet is unchanged
+                for rx in rxs:
+                    self.assertEqual(p.show2(True), rx.show2(True))
+
+                # ARPs x-connect to phy
+                p = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                           src=phy.remote_hosts[j].mac) /
+                     ARP(op="who-has",
+                         hwdst=phy.remote_hosts[j].mac,
+                         hwsrc=phy.local_mac,
+                         psrc=phy.local_ip4,
+                         pdst=phy.remote_hosts[j].ip4))
+
+                rxs = self.send_and_expect(host, [p], phy)
+
+                # verify packet is unchanged
+                for rx in rxs:
+                    self.assertEqual(p.show2(True), rx.show2(True))
+
+        # phy to host
+        for phy, host in zip(phys, hosts):
+            for j in range(N_HOSTS):
+                p = (Ether(dst=phy.local_mac,
+                           src=phy.remote_hosts[j].mac) /
+                     IP(dst=phy.local_ip4,
+                        src=phy.remote_hosts[j].ip4) /
+                     UDP(sport=1234, dport=1234) /
+                     Raw())
+
+                rxs = self.send_and_expect(phy, [p], host)
+
+                # verify packet is unchanged
+                for rx in rxs:
+                    self.assertEqual(p.show2(True), rx.show2(True))
+
+                # ARPs rx'd on the phy are sent to the host
+                p = (Ether(dst="ff:ff:ff:ff:ff:ff",
+                           src=phy.remote_hosts[j].mac) /
+                     ARP(op="is-at",
+                         hwsrc=phy.remote_hosts[j].mac,
+                         hwdst=phy.local_mac,
+                         pdst=phy.local_ip4,
+                         psrc=phy.remote_hosts[j].ip4))
+
+                rxs = self.send_and_expect(phy, [p], host)
+
+                # verify packet is unchanged
+                for rx in rxs:
+                    self.assertEqual(p.show2(True), rx.show2(True))
+
+        # cleanup
+        for phy in phys:
+            phy.unconfig_ip4()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_lisp.py b/test/test_lisp.py
new file mode 100644
index 0000000..0a6e752
--- /dev/null
+++ b/test/test_lisp.py
@@ -0,0 +1,219 @@
+#!/usr/bin/env python3
+
+import abc
+import unittest
+
+from scapy.fields import BitField, ByteField, FlagsField, IntField
+from scapy.packet import bind_layers, Packet, Raw
+from scapy.layers.inet import IP, UDP, Ether
+from scapy.layers.inet6 import IPv6
+
+from framework import VppTestCase, VppTestRunner
+from lisp import VppLocalMapping, VppLispAdjacency, VppLispLocator, \
+    VppLispLocatorSet, VppRemoteMapping, LispRemoteLocator
+from util import ppp
+
+# From py_lispnetworking.lisp.py:  # GNU General Public License v2.0
+
+
+class LISP_GPE_Header(Packet):
+    name = "LISP GPE Header"
+    fields_desc = [
+        FlagsField("gpe_flags", None, 6, ["N", "L", "E", "V", "I", "P"]),
+        BitField("reserved", 0, 18),
+        ByteField("next_proto", 0),
+        IntField("iid", 0),
+    ]
+bind_layers(UDP, LISP_GPE_Header, dport=4341)
+bind_layers(UDP, LISP_GPE_Header, sport=4341)
+bind_layers(LISP_GPE_Header, IP, next_proto=1)
+bind_layers(LISP_GPE_Header, IPv6, next_proto=2)
+bind_layers(LISP_GPE_Header, Ether, next_proto=3)
+
+
+class ForeignAddressFactory(object):
+    count = 0
+    prefix_len = 24
+    net_template = '10.10.10.{}'
+    net = net_template.format(0) + '/' + str(prefix_len)
+
+    def get_ip4(self):
+        if self.count > 255:
+            raise Exception("Network host address exhaustion")
+        self.count += 1
+        return self.net_template.format(self.count)
+
+
+class Driver(metaclass=abc.ABCMeta):
+
+    config_order = ['locator-sets',
+                    'locators',
+                    'local-mappings',
+                    'remote-mappings',
+                    'adjacencies']
+
+    """ Basic class for data driven testing """
+    def __init__(self, test, test_cases):
+        self._test_cases = test_cases
+        self._test = test
+
+    @property
+    def test_cases(self):
+        return self._test_cases
+
+    @property
+    def test(self):
+        return self._test
+
+    def create_packet(self, src_if, dst_if, deid, payload=''):
+        """
+        Create IPv4 packet
+
+        param: src_if
+        param: dst_if
+        """
+        packet = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                  IP(src=src_if.remote_ip4, dst=deid) /
+                  Raw(payload))
+        return packet
+
+    @abc.abstractmethod
+    def run(self):
+        """ testing procedure """
+        pass
+
+
+class SimpleDriver(Driver):
+    """ Implements simple test procedure """
+    def __init__(self, test, test_cases):
+        super(SimpleDriver, self).__init__(test, test_cases)
+
+    def verify_capture(self, src_loc, dst_loc, capture):
+        """
+        Verify captured packet
+
+        :param src_loc: source locator address
+        :param dst_loc: destination locator address
+        :param capture: list of captured packets
+        """
+        self.test.assertEqual(len(capture), 1, "Unexpected number of "
+                              "packets! Expected 1 but {} received"
+                              .format(len(capture)))
+        packet = capture[0]
+        try:
+            ip_hdr = packet[IP]
+            # assert the values match
+            self.test.assertEqual(ip_hdr.src, src_loc, "IP source address")
+            self.test.assertEqual(ip_hdr.dst, dst_loc,
+                                  "IP destination address")
+            gpe_hdr = packet[LISP_GPE_Header]
+            self.test.assertEqual(gpe_hdr.next_proto, 1,
+                                  "next_proto is not ipv4!")
+            ih = gpe_hdr[IP]
+            self.test.assertEqual(ih.src, self.test.pg0.remote_ip4,
+                                  "unexpected source EID!")
+            self.test.assertEqual(ih.dst, self.test.deid_ip4,
+                                  "unexpected dest EID!")
+        except:
+            self.test.logger.error(ppp("Unexpected or invalid packet:",
+                                   packet))
+            raise
+
+    def configure_tc(self, tc):
+        for config_item in self.config_order:
+            for vpp_object in tc[config_item]:
+                vpp_object.add_vpp_config()
+
+    def run(self, dest):
+        """ Send traffic for each test case and verify that it
+            is encapsulated """
+        for tc in enumerate(self.test_cases):
+            self.test.logger.info('Running {}'.format(tc[1]['name']))
+            self.configure_tc(tc[1])
+
+            packet = self.create_packet(self.test.pg0, self.test.pg1, dest,
+                                        'data')
+            self.test.pg0.add_stream(packet)
+            self.test.pg0.enable_capture()
+            self.test.pg1.enable_capture()
+            self.test.pg_start()
+            capture = self.test.pg1.get_capture(1)
+            self.verify_capture(self.test.pg1.local_ip4,
+                                self.test.pg1.remote_ip4, capture)
+            self.test.pg0.assert_nothing_captured()
+
+
+class TestLisp(VppTestCase):
+    """ Basic LISP test """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestLisp, cls).setUpClass()
+        cls.faf = ForeignAddressFactory()
+        cls.create_pg_interfaces(range(2))  # create pg0 and pg1
+        for i in cls.pg_interfaces:
+            i.admin_up()  # put the interface upsrc_if
+            i.config_ip4()  # configure IPv4 address on the interface
+            i.resolve_arp()  # resolve ARP, so that we know VPP MAC
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestLisp, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestLisp, self).setUp()
+        self.vapi.lisp_enable_disable(is_enable=1)
+
+    def test_lisp_basic_encap(self):
+        """Test case for basic encapsulation"""
+
+        self.deid_ip4_net = self.faf.net
+        self.deid_ip4 = self.faf.get_ip4()
+        self.seid_ip4 = '{!s}/{!s}'.format(self.pg0.local_ip4, 32)
+        self.rloc_ip4 = self.pg1.remote_ip4
+
+        test_cases = [
+            {
+                'name': 'basic ip4 over ip4',
+                'locator-sets': [VppLispLocatorSet(self, 'ls-4o4')],
+                'locators': [
+                    VppLispLocator(self, self.pg1.sw_if_index, 'ls-4o4')
+                ],
+                'local-mappings': [
+                    VppLocalMapping(self, self.seid_ip4, 'ls-4o4')
+                ],
+                'remote-mappings': [
+                    VppRemoteMapping(self, self.deid_ip4_net,
+                                     [LispRemoteLocator(self.rloc_ip4)])
+                ],
+                'adjacencies': [
+                    VppLispAdjacency(self, self.seid_ip4, self.deid_ip4_net)
+                ]
+            }
+        ]
+        self.test_driver = SimpleDriver(self, test_cases)
+        self.test_driver.run(self.deid_ip4)
+
+
+class TestLispUT(VppTestCase):
+    """ Lisp UT """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestLispUT, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestLispUT, cls).tearDownClass()
+
+    def test_fib(self):
+        """ LISP Unit Tests """
+        error = self.vapi.cli("test lisp cp")
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn("Failed", error)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_mactime.py b/test/test_mactime.py
new file mode 100644
index 0000000..85ded33
--- /dev/null
+++ b/test/test_mactime.py
@@ -0,0 +1,160 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_gcov_tests
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+
+
+class TestMactime(VppTestCase):
+    """ Mactime Unit Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMactime, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMactime, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestMactime, self).setUp()
+
+    def tearDown(self):
+        super(TestMactime, self).tearDown()
+
+    def test_mactime_range_unittest(self):
+        """ Time Range Test """
+        error = self.vapi.cli("test time-range")
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn('FAILED', error)
+
+    @unittest.skipUnless(running_gcov_tests, "part of code coverage tests")
+    def test_mactime_unittest(self):
+        """ Mactime Plugin Code Coverage Test """
+        cmds = ["loopback create",
+                "mactime enable-disable disable",
+                "mactime enable-disable loop0",
+                "mactime enable-disable loop0 disable",
+                "mactime enable-disable sw_if_index 9999",
+                "bin mactime_enable_disable loop0",
+                "bin mactime_enable_disable loop0 disable",
+                "bin mactime_enable_disable sw_if_index 1",
+                "set interface state loop0 up",
+                "clear mactime",
+                "set ip neighbor loop0 192.168.1.1 00:d0:2d:5e:86:85",
+                "bin mactime_add_del_range name sallow "
+                "mac 00:d0:2d:5e:86:85 allow-static del",
+                "bin mactime_add_del_range name sallow "
+                "mac 00:d0:2d:5e:86:85 allow-static",
+                "bin mactime_add_del_range name sallow "
+                "mac 00:d0:2d:5e:86:85 allow-static del",
+                "bin mactime_add_del_range name sallow "
+                "mac 00:d0:2d:5e:86:85 allow-static",
+                "bin mactime_add_del_range name sblock "
+                "mac 01:00:5e:7f:ff:fa drop-static",
+                "bin mactime_add_del_range name ddrop "
+                "mac c8:bc:c8:5a:ba:f3 drop-range Sun - Sat "
+                "00:00 - 23:59",
+                "bin mactime_add_del_range name dallow "
+                "mac c8:bc:c8:5a:ba:f4 allow-range Sun - Sat "
+                "00:00 - 23:59",
+                "bin mactime_add_del_range name multi "
+                "mac c8:bc:c8:f0:f0:f0 allow-range Sun - Mon "
+                "00:00 - 23:59 Tue - Sat 00:00 - 23:59",
+                "bin mactime_add_del_range bogus",
+                "bin mactime_add_del_range mac 01:00:5e:7f:f0:f0 allow-static",
+                "bin mactime_add_del_range "
+                "name tooloooooooooooooooooooooooooooooooooooooooooooooooo"
+                "nnnnnnnnnnnnnnnnnnnnnnnnnnnng mac 00:00:de:ad:be:ef "
+                "allow-static",
+                "packet-generator new {\n"
+                " name allow\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node ethernet-input\n"
+                " data {\n"
+                "   IP6: 00:d0:2d:5e:86:85 -> 00:0d:ea:d0:00:00\n"
+                "   ICMP: db00::1 -> db00::2\n"
+                "   incrementing 30\n"
+                "   }\n",
+                "}\n",
+                "packet-generator new {\n"
+                " name deny\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node ethernet-input\n"
+                " data {\n"
+                "   IP6: 01:00:5e:7f:ff:fa -> 00:0d:ea:d0:00:00\n"
+                "   ICMP: db00::1 -> db00::2\n"
+                "   incrementing 30\n"
+                "   }\n",
+                "}\n",
+                "packet-generator new {\n"
+                " name ddrop\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node ethernet-input\n"
+                " data {\n"
+                "   IP6: c8:bc:c8:5a:ba:f3 -> 00:0d:ea:d0:00:00\n"
+                "   ICMP: db00::1 -> db00::2\n"
+                "   incrementing 30\n"
+                "   }\n",
+                "}\n",
+                "packet-generator new {\n"
+                " name dallow\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node ethernet-input\n"
+                " data {\n"
+                "   IP6: c8:bc:c8:5a:ba:f4 -> 00:0d:ea:d0:00:00\n"
+                "   ICMP: db00::1 -> db00::2\n"
+                "   incrementing 30\n"
+                "   }\n"
+                "}\n"
+                "packet-generator new {\n"
+                " name makeentry\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node ethernet-input\n"
+                " data {\n"
+                "   IP6: c8:bc:c8:5a:b0:0b -> 00:0d:ea:d0:00:00\n"
+                "   ICMP: db00::1 -> db00::2\n"
+                "   incrementing 30\n"
+                "   }\n"
+                "}\n"
+                "packet-generator new {\n"
+                " name tx\n"
+                " limit 15\n"
+                " size 128-128\n"
+                " interface local0\n"
+                " tx-interface loop0\n"
+                " node loop0-output\n"
+                " data {\n"
+                "   hex 0x01005e7ffffa000dead000000800"
+                "0102030405060708090a0b0c0d0e0f0102030405\n"
+                "   }\n"
+                "}\n"
+                "trace add pg-input 2",
+                "pa en",
+                "show mactime verbose 2",
+                "show trace",
+                "show error"]
+
+        for cmd in cmds:
+            r = self.vapi.cli_return_response(cmd)
+            if r.retval != 0:
+                if hasattr(r, 'reply'):
+                    self.logger.info(cmd + " FAIL reply " + r.reply)
+                else:
+                    self.logger.info(cmd + " FAIL retval " + str(r.retval))
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_map.py b/test/test_map.py
new file mode 100644
index 0000000..90fee30
--- /dev/null
+++ b/test/test_map.py
@@ -0,0 +1,964 @@
+#!/usr/bin/env python3
+
+import ipaddress
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from util import fragment_rfc791, fragment_rfc8200
+
+import scapy.compat
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP, ICMP, TCP
+from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, IPv6ExtHdrFragment, \
+    ICMPv6EchoRequest, ICMPv6DestUnreach
+
+
+class TestMAP(VppTestCase):
+    """ MAP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMAP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMAP, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestMAP, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(4))
+
+        # pg0 is 'inside' IPv4
+        self.pg0.admin_up()
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+        self.pg0.generate_remote_hosts(2)
+        self.pg0.configure_ipv4_neighbors()
+
+        # pg1 is 'outside' IPv6
+        self.pg1.admin_up()
+        self.pg1.config_ip6()
+        self.pg1.generate_remote_hosts(4)
+        self.pg1.configure_ipv6_neighbors()
+
+    def tearDown(self):
+        super(TestMAP, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None):
+        if not dmac:
+            dmac = self.pg1.remote_mac
+
+        self.pg0.add_stream(packets)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        capture = self.pg1.get_capture(len(packets))
+        for rx, tx in zip(capture, packets):
+            self.assertEqual(rx[Ether].dst, dmac)
+            self.assertEqual(rx[IP].src, tx[IP].src)
+            self.assertEqual(rx[IPv6].src, ip6_src)
+            self.assertEqual(rx[IPv6].dst, ip6_dst)
+
+    def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst,
+                                     dmac=None):
+        return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac)
+
+    def test_api_map_domain_dump(self):
+        map_dst = '2001::/64'
+        map_src = '3000::1/128'
+        client_pfx = '192.168.0.0/16'
+        tag = 'MAP-E tag.'
+        index = self.vapi.map_add_domain(ip4_prefix=client_pfx,
+                                         ip6_prefix=map_dst,
+                                         ip6_src=map_src,
+                                         tag=tag).index
+        rv = self.vapi.map_domain_dump()
+
+        # restore the state early so as to not impact subsequent tests.
+        # If an assert fails, we will not get the chance to do it at the end.
+        self.vapi.map_del_domain(index=index)
+
+        self.assertGreater(len(rv), 0,
+                           "Expected output from 'map_domain_dump'")
+
+        # typedefs are returned as ipaddress objects.
+        # wrap results in str() ugh! to avoid the need to call unicode.
+        self.assertEqual(str(rv[0].ip4_prefix), client_pfx)
+        self.assertEqual(str(rv[0].ip6_prefix), map_dst)
+        self.assertEqual(str(rv[0].ip6_src), map_src)
+
+        self.assertEqual(rv[0].tag, tag,
+                         "output produced incorrect tag value.")
+
+    def create_domains(self, ip4_pfx_str, ip6_pfx_str, ip6_src_str):
+        ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
+        ip6_dst = ipaddress.ip_network(ip6_pfx_str)
+        mod = ip4_pfx.num_addresses / 1024
+        indicies = []
+        for i in range(ip4_pfx.num_addresses):
+            rv = self.vapi.map_add_domain(ip6_prefix=ip6_pfx_str,
+                                          ip4_prefix=str(ip4_pfx[i]) + "/32",
+                                          ip6_src=ip6_src_str)
+            indicies.append(rv.index)
+        return indicies
+
+    def test_api_map_domains_get(self):
+        # Create a bunch of domains
+        no_domains = 4096  # This must be large enough to ensure VPP suspends
+        domains = self.create_domains('130.67.0.0/20', '2001::/32',
+                                      '2001::1/128')
+        self.assertEqual(len(domains), no_domains)
+
+        d = []
+        cursor = 0
+
+        # Invalid cursor
+        rv, details = self.vapi.map_domains_get(cursor=no_domains+10)
+        self.assertEqual(rv.retval, -7)
+
+        # Delete a domain in the middle of walk
+        rv, details = self.vapi.map_domains_get(cursor=0)
+        self.assertEqual(rv.retval, -165)
+        self.vapi.map_del_domain(index=rv.cursor)
+        domains.remove(rv.cursor)
+
+        # Continue at point of deleted cursor
+        rv, details = self.vapi.map_domains_get(cursor=rv.cursor)
+        self.assertIn(rv.retval, [0, -165])
+
+        d = list(self.vapi.vpp.details_iter(self.vapi.map_domains_get))
+        self.assertEqual(len(d), no_domains - 1)
+
+        # Clean up
+        for i in domains:
+            self.vapi.map_del_domain(index=i)
+
+    def test_map_e_udp(self):
+        """ MAP-E UDP"""
+
+        #
+        # Add a route to the MAP-BR
+        #
+        map_br_pfx = "2001::"
+        map_br_pfx_len = 32
+        map_route = VppIpRoute(self,
+                               map_br_pfx,
+                               map_br_pfx_len,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index)])
+        map_route.add_vpp_config()
+
+        #
+        # Add a domain that maps from pg0 to pg1
+        #
+        map_dst = '2001::/32'
+        map_src = '3000::1/128'
+        client_pfx = '192.168.0.0/16'
+        map_translated_addr = '2001:0:101:7000:0:c0a8:101:7'
+        tag = 'MAP-E tag.'
+        self.vapi.map_add_domain(ip4_prefix=client_pfx,
+                                 ip6_prefix=map_dst,
+                                 ip6_src=map_src,
+                                 ea_bits_len=20,
+                                 psid_offset=4,
+                                 psid_length=4,
+                                 tag=tag)
+
+        self.vapi.map_param_set_security_check(enable=1, fragments=1)
+
+        # Enable MAP on interface.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=0)
+
+        # Ensure MAP doesn't steal all packets!
+        v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 100))
+        rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0)
+        v4_reply = v4[1]
+        v4_reply.ttl -= 1
+        for p in rx:
+            self.validate(p[1], v4_reply)
+
+        #
+        # Fire in a v4 packet that will be encapped to the BR
+        #
+        v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst='192.168.1.1') /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 100))
+
+        self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr)
+
+        #
+        # Verify reordered fragments are able to pass as well
+        #
+        v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(id=1, src=self.pg0.remote_ip4, dst='192.168.1.1') /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 1000))
+
+        frags = fragment_rfc791(v4, 400)
+        frags.reverse()
+
+        self.send_and_assert_encapped(frags, "3000::1", map_translated_addr)
+
+        # Enable MAP on interface.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=0)
+
+        # Ensure MAP doesn't steal all packets
+        v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 100))
+        rx = self.send_and_expect(self.pg1, v6*1, self.pg1)
+        v6_reply = v6[1]
+        v6_reply.hlim -= 1
+        for p in rx:
+            self.validate(p[1], v6_reply)
+
+        #
+        # Fire in a V6 encapped packet.
+        # expect a decapped packet on the inside ip4 link
+        #
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(dst='3000::1', src=map_translated_addr) /
+             IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
+             UDP(sport=10000, dport=20000) /
+             Raw(b'\xa5' * 100))
+
+        self.pg1.add_stream(p)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(1)
+        rx = rx[0]
+
+        self.assertFalse(rx.haslayer(IPv6))
+        self.assertEqual(rx[IP].src, p[IP].src)
+        self.assertEqual(rx[IP].dst, p[IP].dst)
+
+        #
+        # Verify encapped reordered fragments pass as well
+        #
+        p = (IP(id=1, dst=self.pg0.remote_ip4, src='192.168.1.1') /
+             UDP(sport=10000, dport=20000) /
+             Raw(b'\xa5' * 1500))
+        frags = fragment_rfc791(p, 400)
+        frags.reverse()
+
+        stream = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                  IPv6(dst='3000::1', src=map_translated_addr) /
+                  x for x in frags)
+
+        self.pg1.add_stream(stream)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(len(frags))
+
+        for r in rx:
+            self.assertFalse(r.haslayer(IPv6))
+            self.assertEqual(r[IP].src, p[IP].src)
+            self.assertEqual(r[IP].dst, p[IP].dst)
+
+        # Verify that fragments pass even if ipv6 layer is fragmented
+        stream = (IPv6(dst='3000::1', src=map_translated_addr) / x
+                  for x in frags)
+
+        v6_stream = [
+            Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x
+            for i in range(len(frags))
+            for x in fragment_rfc8200(
+                IPv6(dst='3000::1', src=map_translated_addr) / frags[i],
+                i, 200)]
+
+        self.pg1.add_stream(v6_stream)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(len(frags))
+
+        for r in rx:
+            self.assertFalse(r.haslayer(IPv6))
+            self.assertEqual(r[IP].src, p[IP].src)
+            self.assertEqual(r[IP].dst, p[IP].dst)
+
+        #
+        # Pre-resolve. No API for this!!
+        #
+        self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1")
+
+        self.send_and_assert_no_replies(self.pg0, v4,
+                                        "resolved via default route")
+
+        #
+        # Add a route to 4001::1. Expect the encapped traffic to be
+        # sent via that routes next-hop
+        #
+        pre_res_route = VppIpRoute(self, "4001::1", 128,
+                                   [VppRoutePath(self.pg1.remote_hosts[2].ip6,
+                                                 self.pg1.sw_if_index)])
+        pre_res_route.add_vpp_config()
+
+        self.send_and_assert_encapped_one(v4, "3000::1",
+                                          map_translated_addr,
+                                          dmac=self.pg1.remote_hosts[2].mac)
+
+        #
+        # change the route to the pre-solved next-hop
+        #
+        pre_res_route.modify([VppRoutePath(self.pg1.remote_hosts[3].ip6,
+                                           self.pg1.sw_if_index)])
+        pre_res_route.add_vpp_config()
+
+        self.send_and_assert_encapped_one(v4, "3000::1",
+                                          map_translated_addr,
+                                          dmac=self.pg1.remote_hosts[3].mac)
+
+        #
+        # cleanup. The test infra's object registry will ensure
+        # the route is really gone and thus that the unresolve worked.
+        #
+        pre_res_route.remove_vpp_config()
+        self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1")
+
+    def test_map_e_inner_frag(self):
+        """ MAP-E Inner fragmentation """
+
+        #
+        # Add a route to the MAP-BR
+        #
+        map_br_pfx = "2001::"
+        map_br_pfx_len = 32
+        map_route = VppIpRoute(self,
+                               map_br_pfx,
+                               map_br_pfx_len,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index)])
+        map_route.add_vpp_config()
+
+        #
+        # Add a domain that maps from pg0 to pg1
+        #
+        map_dst = '2001::/32'
+        map_src = '3000::1/128'
+        client_pfx = '192.168.0.0/16'
+        map_translated_addr = '2001:0:101:7000:0:c0a8:101:7'
+        tag = 'MAP-E tag.'
+        self.vapi.map_add_domain(ip4_prefix=client_pfx,
+                                 ip6_prefix=map_dst,
+                                 ip6_src=map_src,
+                                 ea_bits_len=20,
+                                 psid_offset=4,
+                                 psid_length=4,
+                                 mtu=1000,
+                                 tag=tag)
+
+        # Enable MAP on interface.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=0)
+
+        # Enable inner fragmentation
+        self.vapi.map_param_set_fragmentation(inner=1)
+
+        v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst='192.168.1.1') /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 1300))
+
+        self.pg_send(self.pg0, v4*1)
+        rx = self.pg1.get_capture(2)
+
+        frags = fragment_rfc791(v4[1], 1000)
+        frags[0].id = 0
+        frags[1].id = 0
+        frags[0].ttl -= 1
+        frags[1].ttl -= 1
+        frags[0].chksum = 0
+        frags[1].chksum = 0
+
+        v6_reply1 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) /
+                     frags[0])
+        v6_reply2 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) /
+                     frags[1])
+        rx[0][1].fl = 0
+        rx[1][1].fl = 0
+        rx[0][1][IP].id = 0
+        rx[1][1][IP].id = 0
+        rx[0][1][IP].chksum = 0
+        rx[1][1][IP].chksum = 0
+
+        self.validate(rx[0][1], v6_reply1)
+        self.validate(rx[1][1], v6_reply2)
+
+    def test_map_e_tcp_mss(self):
+        """ MAP-E TCP MSS"""
+
+        #
+        # Add a route to the MAP-BR
+        #
+        map_br_pfx = "2001::"
+        map_br_pfx_len = 32
+        map_route = VppIpRoute(self,
+                               map_br_pfx,
+                               map_br_pfx_len,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index)])
+        map_route.add_vpp_config()
+
+        #
+        # Add a domain that maps from pg0 to pg1
+        #
+        map_dst = '2001::/32'
+        map_src = '3000::1/128'
+        client_pfx = '192.168.0.0/16'
+        map_translated_addr = '2001:0:101:5000:0:c0a8:101:5'
+        tag = 'MAP-E TCP tag.'
+        self.vapi.map_add_domain(ip4_prefix=client_pfx,
+                                 ip6_prefix=map_dst,
+                                 ip6_src=map_src,
+                                 ea_bits_len=20,
+                                 psid_offset=4,
+                                 psid_length=4,
+                                 tag=tag)
+
+        # Enable MAP on pg0 interface.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=0)
+
+        # Enable MAP on pg1 interface.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=0)
+
+        # TCP MSS clamping
+        mss_clamp = 1300
+        self.vapi.map_param_set_tcp(mss_clamp)
+
+        #
+        # Send a v4 packet that will be encapped.
+        #
+        p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+        p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.1.1')
+        p_tcp = TCP(sport=20000, dport=30000, flags="S",
+                    options=[("MSS", 1455)])
+        p4 = p_ether / p_ip4 / p_tcp
+
+        self.pg1.add_stream(p4)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(1)
+        rx = rx[0]
+
+        self.assertTrue(rx.haslayer(IPv6))
+        self.assertEqual(rx[IP].src, p4[IP].src)
+        self.assertEqual(rx[IP].dst, p4[IP].dst)
+        self.assertEqual(rx[IPv6].src, "3000::1")
+        self.assertEqual(rx[TCP].options,
+                         TCP(options=[('MSS', mss_clamp)]).options)
+
+    def validate(self, rx, expected):
+        self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected)))
+
+    def validate_frag6(self, p6_frag, p_ip6_expected):
+        self.assertFalse(p6_frag.haslayer(IP))
+        self.assertTrue(p6_frag.haslayer(IPv6))
+        self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment))
+        self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src)
+        self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst)
+
+    def validate_frag_payload_len6(self, rx, proto, payload_len_expected):
+        payload_total = 0
+        for p in rx:
+            payload_total += p[IPv6].plen
+
+        # First fragment has proto
+        payload_total -= len(proto())
+
+        # Every fragment has IPv6 fragment header
+        payload_total -= len(IPv6ExtHdrFragment()) * len(rx)
+
+        self.assertEqual(payload_total, payload_len_expected)
+
+    def validate_frag4(self, p4_frag, p_ip4_expected):
+        self.assertFalse(p4_frag.haslayer(IPv6))
+        self.assertTrue(p4_frag.haslayer(IP))
+        self.assertTrue(p4_frag[IP].frag != 0 or p4_frag[IP].flags.MF)
+        self.assertEqual(p4_frag[IP].src, p_ip4_expected.src)
+        self.assertEqual(p4_frag[IP].dst, p_ip4_expected.dst)
+
+    def validate_frag_payload_len4(self, rx, proto, payload_len_expected):
+        payload_total = 0
+        for p in rx:
+            payload_total += len(p[IP].payload)
+
+        # First fragment has proto
+        payload_total -= len(proto())
+
+        self.assertEqual(payload_total, payload_len_expected)
+
+    def payload(self, len):
+        return 'x' * len
+
+    def test_map_t(self):
+        """ MAP-T """
+
+        #
+        # Add a domain that maps from pg0 to pg1
+        #
+        map_dst = '2001:db8::/32'
+        map_src = '1234:5678:90ab:cdef::/64'
+        ip4_pfx = '192.168.0.0/24'
+        tag = 'MAP-T Tag.'
+
+        self.vapi.map_add_domain(ip6_prefix=map_dst,
+                                 ip4_prefix=ip4_pfx,
+                                 ip6_src=map_src,
+                                 ea_bits_len=16,
+                                 psid_offset=6,
+                                 psid_length=4,
+                                 mtu=1500,
+                                 tag=tag)
+
+        # Enable MAP-T on interfaces.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=1)
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=1)
+
+        # Ensure MAP doesn't steal all packets!
+        v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 100))
+        rx = self.send_and_expect(self.pg0, v4*1, self.pg0)
+        v4_reply = v4[1]
+        v4_reply.ttl -= 1
+        for p in rx:
+            self.validate(p[1], v4_reply)
+        # Ensure MAP doesn't steal all packets
+        v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
+              UDP(sport=20000, dport=10000) /
+              Raw(b'\xa5' * 100))
+        rx = self.send_and_expect(self.pg1, v6*1, self.pg1)
+        v6_reply = v6[1]
+        v6_reply.hlim -= 1
+        for p in rx:
+            self.validate(p[1], v6_reply)
+
+        map_route = VppIpRoute(self,
+                               "2001:db8::",
+                               32,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index,
+                                             proto=DpoProto.DPO_PROTO_IP6)])
+        map_route.add_vpp_config()
+
+        #
+        # Send a v4 packet that will be translated
+        #
+        p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+        p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
+        payload = TCP(sport=0xabcd, dport=0xabcd)
+
+        p4 = (p_ether / p_ip4 / payload)
+        p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
+                              dst="2001:db8:1f0::c0a8:1:f") / payload)
+        p6_translated.hlim -= 1
+        rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
+        for p in rx:
+            self.validate(p[1], p6_translated)
+
+        # Send back an IPv6 packet that will be "untranslated"
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
+                     dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / p_ip6 / payload)
+        p4_translated = (IP(src='192.168.0.1',
+                            dst=self.pg0.remote_ip4) / payload)
+        p4_translated.id = 0
+        p4_translated.ttl -= 1
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
+        for p in rx:
+            self.validate(p[1], p4_translated)
+
+        # IPv4 TTL=0
+        ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0)
+        p4 = (p_ether / ip4_ttl_expired / payload)
+
+        icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4,
+                          dst=self.pg0.remote_ip4) /
+                       ICMP(type='time-exceeded',
+                            code='ttl-zero-during-transit') /
+                       IP(src=self.pg0.remote_ip4,
+                          dst='192.168.0.1', ttl=0) / payload)
+        rx = self.send_and_expect(self.pg0, p4*1, self.pg0)
+        for p in rx:
+            self.validate(p[1], icmp4_reply)
+
+        # IPv4 TTL=1
+        ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=1)
+        p4 = (p_ether / ip4_ttl_expired / payload)
+
+        icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4,
+                          dst=self.pg0.remote_ip4) /
+                       ICMP(type='time-exceeded',
+                            code='ttl-zero-during-transit') /
+                       IP(src=self.pg0.remote_ip4,
+                          dst='192.168.0.1', ttl=1) / payload)
+        rx = self.send_and_expect(self.pg0, p4*1, self.pg0)
+        for p in rx:
+            self.validate(p[1], icmp4_reply)
+
+        # IPv6 Hop limit at BR
+        ip6_hlim_expired = IPv6(hlim=1, src='2001:db8:1ab::c0a8:1:ab',
+                                dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / ip6_hlim_expired / payload)
+
+        icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
+                            dst="2001:db8:1ab::c0a8:1:ab") /
+                       ICMPv6TimeExceeded(code=0) /
+                       IPv6(src="2001:db8:1ab::c0a8:1:ab",
+                            dst='1234:5678:90ab:cdef:ac:1001:200:0',
+                            hlim=1) / payload)
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg1)
+        for p in rx:
+            self.validate(p[1], icmp6_reply)
+
+        # IPv6 Hop limit beyond BR
+        ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab',
+                                dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / ip6_hlim_expired / payload)
+
+        icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
+                            dst="2001:db8:1ab::c0a8:1:ab") /
+                       ICMPv6TimeExceeded(code=0) /
+                       IPv6(src="2001:db8:1ab::c0a8:1:ab",
+                            dst='1234:5678:90ab:cdef:ac:1001:200:0',
+                            hlim=0) / payload)
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg1)
+        for p in rx:
+            self.validate(p[1], icmp6_reply)
+
+        # IPv4 Well-known port
+        p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
+        payload = UDP(sport=200, dport=200)
+        p4 = (p_ether / p_ip4 / payload)
+        self.send_and_assert_no_replies(self.pg0, p4*1)
+
+        # IPv6 Well-known port
+        payload = UDP(sport=200, dport=200)
+        p6 = (p_ether6 / p_ip6 / payload)
+        self.send_and_assert_no_replies(self.pg1, p6*1)
+
+        # UDP packet fragmentation
+        payload_len = 1453
+        payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
+        p4 = (p_ether / p_ip4 / payload)
+        self.pg_enable_capture()
+        self.pg0.add_stream(p4)
+        self.pg_start()
+        rx = self.pg1.get_capture(2)
+
+        p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0',
+                                dst='2001:db8:1e0::c0a8:1:e')
+        for p in rx:
+            self.validate_frag6(p, p_ip6_translated)
+
+        self.validate_frag_payload_len6(rx, UDP, payload_len)
+
+        # UDP packet fragmentation send fragments
+        payload_len = 1453
+        payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
+        p4 = (p_ether / p_ip4 / payload)
+        frags = fragment_rfc791(p4, fragsize=1000)
+        self.pg_enable_capture()
+        self.pg0.add_stream(frags)
+        self.pg_start()
+        rx = self.pg1.get_capture(2)
+
+        for p in rx:
+            self.validate_frag6(p, p_ip6_translated)
+
+        self.validate_frag_payload_len6(rx, UDP, payload_len)
+
+        # Send back an fragmented IPv6 UDP packet that will be "untranslated"
+        payload = UDP(sport=4000, dport=40000) / self.payload(payload_len)
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6 = IPv6(src='2001:db8:1e0::c0a8:1:e',
+                     dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / p_ip6 / payload)
+        frags6 = fragment_rfc8200(p6, identification=0xdcba, fragsize=1000)
+
+        p_ip4_translated = IP(src='192.168.0.1', dst=self.pg0.remote_ip4)
+        p4_translated = (p_ip4_translated / payload)
+        p4_translated.id = 0
+        p4_translated.ttl -= 1
+
+        self.pg_enable_capture()
+        self.pg1.add_stream(frags6)
+        self.pg_start()
+        rx = self.pg0.get_capture(2)
+
+        for p in rx:
+            self.validate_frag4(p, p4_translated)
+
+        self.validate_frag_payload_len4(rx, UDP, payload_len)
+
+        # ICMP packet fragmentation
+        payload = ICMP(id=6529) / self.payload(payload_len)
+        p4 = (p_ether / p_ip4 / payload)
+        self.pg_enable_capture()
+        self.pg0.add_stream(p4)
+        self.pg_start()
+        rx = self.pg1.get_capture(2)
+
+        p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0',
+                                dst='2001:db8:160::c0a8:1:6')
+        for p in rx:
+            self.validate_frag6(p, p_ip6_translated)
+
+        self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
+
+        # ICMP packet fragmentation send fragments
+        payload = ICMP(id=6529) / self.payload(payload_len)
+        p4 = (p_ether / p_ip4 / payload)
+        frags = fragment_rfc791(p4, fragsize=1000)
+        self.pg_enable_capture()
+        self.pg0.add_stream(frags)
+        self.pg_start()
+        rx = self.pg1.get_capture(2)
+
+        for p in rx:
+            self.validate_frag6(p, p_ip6_translated)
+
+        self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
+
+        # TCP MSS clamping
+        self.vapi.map_param_set_tcp(1300)
+
+        #
+        # Send a v4 TCP SYN packet that will be translated and MSS clamped
+        #
+        p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+        p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
+        payload = TCP(sport=0xabcd, dport=0xabcd, flags="S",
+                      options=[('MSS', 1460)])
+
+        p4 = (p_ether / p_ip4 / payload)
+        p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
+                              dst="2001:db8:1f0::c0a8:1:f") / payload)
+        p6_translated.hlim -= 1
+        p6_translated[TCP].options = [('MSS', 1300)]
+        rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
+        for p in rx:
+            self.validate(p[1], p6_translated)
+
+        # Send back an IPv6 packet that will be "untranslated"
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
+                     dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / p_ip6 / payload)
+        p4_translated = (IP(src='192.168.0.1',
+                            dst=self.pg0.remote_ip4) / payload)
+        p4_translated.id = 0
+        p4_translated.ttl -= 1
+        p4_translated[TCP].options = [('MSS', 1300)]
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
+        for p in rx:
+            self.validate(p[1], p4_translated)
+
+        # TCP MSS clamping cleanup
+        self.vapi.map_param_set_tcp(0)
+
+        # Enable icmp6 param to get back ICMPv6 unreachable messages in case
+        # of security check fails
+        self.vapi.map_param_set_icmp6(enable_unreachable=1)
+
+        # Send back an IPv6 packet that will be droppped due to security
+        # check fail
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6_sec_check_fail = IPv6(src='2001:db8:1fe::c0a8:1:f',
+                                    dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        payload = TCP(sport=0xabcd, dport=0xabcd)
+        p6 = (p_ether6 / p_ip6_sec_check_fail / payload)
+
+        self.pg_send(self.pg1, p6*1)
+        self.pg0.get_capture(0, timeout=1)
+        rx = self.pg1.get_capture(1)
+
+        icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
+                            dst='2001:db8:1fe::c0a8:1:f') /
+                       ICMPv6DestUnreach(code=5) /
+                       p_ip6_sec_check_fail / payload)
+
+        for p in rx:
+            self.validate(p[1], icmp6_reply)
+
+        # ICMPv6 unreachable messages cleanup
+        self.vapi.map_param_set_icmp6(enable_unreachable=0)
+
+    def test_map_t_ip6_psid(self):
+        """ MAP-T v6->v4 PSID validation"""
+
+        #
+        # Add a domain that maps from pg0 to pg1
+        #
+        map_dst = '2001:db8::/32'
+        map_src = '1234:5678:90ab:cdef::/64'
+        ip4_pfx = '192.168.0.0/24'
+        tag = 'MAP-T Test Domain'
+
+        self.vapi.map_add_domain(ip6_prefix=map_dst,
+                                 ip4_prefix=ip4_pfx,
+                                 ip6_src=map_src,
+                                 ea_bits_len=16,
+                                 psid_offset=6,
+                                 psid_length=4,
+                                 mtu=1500,
+                                 tag=tag)
+
+        # Enable MAP-T on interfaces.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=1)
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=1)
+
+        map_route = VppIpRoute(self,
+                               "2001:db8::",
+                               32,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index,
+                                             proto=DpoProto.DPO_PROTO_IP6)])
+        map_route.add_vpp_config()
+
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
+                     dst='1234:5678:90ab:cdef:ac:1001:200:0')
+
+        # Send good IPv6 source port, ensure translated IPv4 received
+        payload = TCP(sport=0xabcd, dport=80)
+        p6 = (p_ether6 / p_ip6 / payload)
+        p4_translated = (IP(src='192.168.0.1',
+                            dst=self.pg0.remote_ip4) / payload)
+        p4_translated.id = 0
+        p4_translated.ttl -= 1
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
+        for p in rx:
+            self.validate(p[1], p4_translated)
+
+        # Send bad IPv6 source port, ensure translated IPv4 not received
+        payload = TCP(sport=0xdcba, dport=80)
+        p6 = (p_ether6 / p_ip6 / payload)
+        self.send_and_assert_no_replies(self.pg1, p6*1)
+
+    def test_map_t_pre_resolve(self):
+        """ MAP-T pre-resolve"""
+
+        # Add a domain that maps from pg0 to pg1
+        map_dst = '2001:db8::/32'
+        map_src = '1234:5678:90ab:cdef::/64'
+        ip4_pfx = '192.168.0.0/24'
+        tag = 'MAP-T Test Domain.'
+
+        self.vapi.map_add_domain(ip6_prefix=map_dst,
+                                 ip4_prefix=ip4_pfx,
+                                 ip6_src=map_src,
+                                 ea_bits_len=16,
+                                 psid_offset=6,
+                                 psid_length=4,
+                                 mtu=1500,
+                                 tag=tag)
+
+        # Enable MAP-T on interfaces.
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=1)
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=1)
+
+        # Enable pre-resolve option
+        self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3",
+                                                ip6_nh_address="4001::1",
+                                                is_add=1)
+
+        # Add a route to 4001::1 and expect the translated traffic to be
+        # sent via that route next-hop.
+        pre_res_route6 = VppIpRoute(self, "4001::1", 128,
+                                    [VppRoutePath(self.pg1.remote_hosts[2].ip6,
+                                                  self.pg1.sw_if_index)])
+        pre_res_route6.add_vpp_config()
+
+        # Add a route to 10.1.2.3 and expect the "untranslated" traffic to be
+        # sent via that route next-hop.
+        pre_res_route4 = VppIpRoute(self, "10.1.2.3", 32,
+                                    [VppRoutePath(self.pg0.remote_hosts[1].ip4,
+                                                  self.pg0.sw_if_index)])
+        pre_res_route4.add_vpp_config()
+
+        # Send an IPv4 packet that will be translated
+        p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+        p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
+        payload = TCP(sport=0xabcd, dport=0xabcd)
+        p4 = (p_ether / p_ip4 / payload)
+
+        p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
+                              dst="2001:db8:1f0::c0a8:1:f") / payload)
+        p6_translated.hlim -= 1
+
+        rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
+        for p in rx:
+            self.assertEqual(p[Ether].dst, self.pg1.remote_hosts[2].mac)
+            self.validate(p[1], p6_translated)
+
+        # Send back an IPv6 packet that will be "untranslated"
+        p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+        p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
+                     dst='1234:5678:90ab:cdef:ac:1001:200:0')
+        p6 = (p_ether6 / p_ip6 / payload)
+
+        p4_translated = (IP(src='192.168.0.1',
+                            dst=self.pg0.remote_ip4) / payload)
+        p4_translated.id = 0
+        p4_translated.ttl -= 1
+
+        rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
+        for p in rx:
+            self.assertEqual(p[Ether].dst, self.pg0.remote_hosts[1].mac)
+            self.validate(p[1], p4_translated)
+
+        # Cleanup pre-resolve option
+        self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3",
+                                                ip6_nh_address="4001::1",
+                                                is_add=0)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_map_br.py b/test/test_map_br.py
new file mode 100644
index 0000000..3602ddd
--- /dev/null
+++ b/test/test_map_br.py
@@ -0,0 +1,694 @@
+#!/usr/bin/env python3
+
+import ipaddress
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from util import fragment_rfc791, fragment_rfc8200
+
+import scapy.compat
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP, ICMP, TCP, IPerror, UDPerror
+from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, ICMPv6PacketTooBig
+from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply, IPerror6
+
+
+class TestMAPBR(VppTestCase):
+    """ MAP-T Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestMAPBR, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMAPBR, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestMAPBR, self).setUp()
+
+        #
+        # Create 2 pg interfaces.
+        # pg0 is IPv4
+        # pg1 is IPv6
+        #
+        self.create_pg_interfaces(range(2))
+
+        self.pg0.admin_up()
+        self.pg0.config_ip4()
+        self.pg1.generate_remote_hosts(20)
+        self.pg1.configure_ipv4_neighbors()
+        self.pg0.resolve_arp()
+
+        self.pg1.admin_up()
+        self.pg1.config_ip6()
+        self.pg1.generate_remote_hosts(20)
+        self.pg1.configure_ipv6_neighbors()
+
+        #
+        # BR configuration parameters used for all test.
+        #
+        self.ip4_prefix = '198.18.0.0/24'
+        self.ip6_prefix = '2001:db8:f0::/48'
+        self.ip6_src = '2001:db8:ffff:ff00::/64'
+        self.ea_bits_len = 12
+        self.psid_offset = 6
+        self.psid_length = 4
+        self.mtu = 1500
+        self.tag = 'MAP-T BR'
+
+        self.ipv4_internet_address = self.pg0.remote_ip4
+        self.ipv4_map_address = "198.18.0.12"
+        self.ipv4_udp_or_tcp_internet_port = 65000
+        self.ipv4_udp_or_tcp_map_port = 16606
+
+        self.ipv6_cpe_address = "2001:db8:f0:c30:0:c612:c:3"      # 198.18.0.12
+        self.ipv6_spoof_address = "2001:db8:f0:c30:0:c612:1c:3"   # 198.18.0.28
+        self.ipv6_spoof_prefix = "2001:db8:f0:c30:0:a00:c:3"      # 10.0.0.12
+        self.ipv6_spoof_psid = "2001:db8:f0:c30:0:c612:c:4"       # 4
+        self.ipv6_spoof_subnet = "2001:db8:f1:c30:0:c612:c:3"     # f1
+
+        self.ipv6_udp_or_tcp_internet_port = 65000
+        self.ipv6_udp_or_tcp_map_port = 16606
+        self.ipv6_udp_or_tcp_spoof_port = 16862
+
+        self.ipv6_map_address = (
+            "2001:db8:ffff:ff00:ac:1001:200:0")         # 176.16.1.2
+        self.ipv6_map_same_rule_diff_addr = (
+            "2001:db8:ffff:ff00:c6:1200:1000:0")        # 198.18.0.16
+        self.ipv6_map_same_rule_same_addr = (
+            "2001:db8:ffff:ff00:c6:1200:c00:0")         # 198.18.0.12
+
+        self.map_br_prefix = "2001:db8:f0::"
+        self.map_br_prefix_len = 48
+        self.psid_number = 3
+
+        #
+        # Add an IPv6 route to the MAP-BR.
+        #
+        map_route = VppIpRoute(self,
+                               self.map_br_prefix,
+                               self.map_br_prefix_len,
+                               [VppRoutePath(self.pg1.remote_ip6,
+                                             self.pg1.sw_if_index)])
+        map_route.add_vpp_config()
+
+        #
+        # Add a MAP BR domain that maps from pg0 to pg1.
+        #
+        self.vapi.map_add_domain(ip4_prefix=self.ip4_prefix,
+                                 ip6_prefix=self.ip6_prefix,
+                                 ip6_src=self.ip6_src,
+                                 ea_bits_len=self.ea_bits_len,
+                                 psid_offset=self.psid_offset,
+                                 psid_length=self.psid_length,
+                                 mtu=self.mtu,
+                                 tag=self.tag)
+
+        #
+        # Set BR parameters.
+        #
+        self.vapi.map_param_set_fragmentation(inner=1, ignore_df=0)
+        self.vapi.map_param_set_fragmentation(inner=0, ignore_df=0)
+        self.vapi.map_param_set_icmp(ip4_err_relay_src=self.pg0.local_ip4)
+        self.vapi.map_param_set_traffic_class(copy=1)
+
+        #
+        # Enable MAP-T on interfaces.
+        #
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg0.sw_if_index,
+                                        is_translation=1)
+
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=1)
+
+        self.vapi.map_if_enable_disable(is_enable=1,
+                                        sw_if_index=self.pg1.sw_if_index,
+                                        is_translation=1)
+
+    def tearDown(self):
+        super(TestMAPBR, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def v4_address_check(self, pkt):
+        self.assertEqual(pkt[IP].src, self.ipv4_map_address)
+        self.assertEqual(pkt[IP].dst, self.ipv4_internet_address)
+
+    def v4_port_check(self, pkt, proto):
+        self.assertEqual(pkt[proto].sport, self.ipv4_udp_or_tcp_map_port)
+        self.assertEqual(pkt[proto].dport, self.ipv4_udp_or_tcp_internet_port)
+
+    def v6_address_check(self, pkt):
+        self.assertEqual(pkt[IPv6].src, self.ipv6_map_address)
+        self.assertEqual(pkt[IPv6].dst, self.ipv6_cpe_address)
+
+    def v6_port_check(self, pkt, proto):
+        self.assertEqual(pkt[proto].sport, self.ipv6_udp_or_tcp_internet_port)
+        self.assertEqual(pkt[proto].dport, self.ipv6_udp_or_tcp_map_port)
+
+    #
+    # Normal translation of UDP packets v4 -> v6 direction
+    # Send 128 frame size packet for IPv4/UDP.
+    # Received packet should be translated into IPv6 packet with no
+    # fragment header.
+    #
+
+    def test_map_t_udp_ip4_to_ip6(self):
+        """ MAP-T UDP IPv4 -> IPv6 """
+
+        eth = Ether(src=self.pg0.remote_mac,
+                    dst=self.pg0.local_mac)
+        ip = IP(src=self.pg0.remote_ip4,
+                dst=self.ipv4_map_address,
+                tos=0)
+        udp = UDP(sport=self.ipv4_udp_or_tcp_internet_port,
+                  dport=self.ipv4_udp_or_tcp_map_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg0, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v6_address_check(rx_pkt)
+        self.v6_port_check(rx_pkt, UDP)
+        self.assertEqual(rx_pkt[IPv6].tc, 0)    # IPv4 ToS passed to v6 TC
+        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="UDP").nh)
+
+    #
+    # Normal translation of TCP packets v4 -> v6 direction.
+    # Send 128 frame size packet for IPv4/TCP.
+    # Received packet should be translated into IPv6 packet with no
+    # fragment header.
+    #
+
+    def test_map_t_tcp_ip4_to_ip6(self):
+        """ MAP-T TCP IPv4 -> IPv6 """
+
+        eth = Ether(src=self.pg0.remote_mac,
+                    dst=self.pg0.local_mac)
+        ip = IP(src=self.pg0.remote_ip4,
+                dst=self.ipv4_map_address,
+                tos=0)
+        tcp = TCP(sport=self.ipv4_udp_or_tcp_internet_port,
+                  dport=self.ipv4_udp_or_tcp_map_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / tcp / payload
+
+        self.pg_send(self.pg0, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v6_address_check(rx_pkt)
+        self.v6_port_check(rx_pkt, TCP)
+        self.assertEqual(rx_pkt[IPv6].tc, 0)    # IPv4 ToS passed to v6 TC
+        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="TCP").nh)
+
+    #
+    # Normal translation of UDP packets v6 -> v4 direction
+    # Send 128 frame size packet for IPv6/UDP.
+    # Received packet should be translated into an IPv4 packet with DF=1.
+    #
+
+    def test_map_t_udp_ip6_to_ip4(self):
+        """ MAP-T UDP IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v4_address_check(rx_pkt)
+        self.v4_port_check(rx_pkt, UDP)
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="udp").proto)
+        self.assertEqual(rx_pkt[IP].tos, 0)    # IPv6 TC passed to v4 ToS
+        df_bit = IP(flags="DF").flags
+        self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
+
+    #
+    # Normal translation of TCP packets v6 -> v4 direction
+    # Send 128 frame size packet for IPv6/TCP.
+    # Received packet should be translated into an IPv4 packet with DF=1
+    #
+
+    def test_map_t_tcp_ip6_to_ip4(self):
+        """ MAP-T TCP IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        tcp = TCP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / tcp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v4_address_check(rx_pkt)
+        self.v4_port_check(rx_pkt, TCP)
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="tcp").proto)
+        self.assertEqual(rx_pkt[IP].tos, 0)    # IPv6 TC passed to v4 ToS
+        df_bit = IP(flags="DF").flags
+        self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
+
+    #
+    # Translation of ICMP Echo Request v4 -> v6 direction
+    # Received packet should be translated into an IPv6 Echo Request.
+    #
+
+    def test_map_t_echo_request_ip4_to_ip6(self):
+        """ MAP-T echo request IPv4 -> IPv6 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IP(src=self.pg0.remote_ip4,
+                dst=self.ipv4_map_address)
+        icmp = ICMP(type="echo-request",
+                    id=self.ipv6_udp_or_tcp_map_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / payload
+
+        self.pg_send(self.pg0, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
+        self.assertEqual(rx_pkt[ICMPv6EchoRequest].type,
+                         ICMPv6EchoRequest(type="Echo Request").type)
+        self.assertEqual(rx_pkt[ICMPv6EchoRequest].code, 0)
+        self.assertEqual(rx_pkt[ICMPv6EchoRequest].id,
+                         self.ipv6_udp_or_tcp_map_port)
+
+    #
+    # Translation of ICMP Echo Reply v4 -> v6 direction
+    # Received packet should be translated into an IPv6 Echo Reply.
+    #
+
+    def test_map_t_echo_reply_ip4_to_ip6(self):
+        """ MAP-T echo reply IPv4 -> IPv6 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IP(src=self.pg0.remote_ip4,
+                dst=self.ipv4_map_address)
+        icmp = ICMP(type="echo-reply",
+                    id=self.ipv6_udp_or_tcp_map_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / payload
+
+        self.pg_send(self.pg0, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
+        self.assertEqual(rx_pkt[ICMPv6EchoReply].type,
+                         ICMPv6EchoReply(type="Echo Reply").type)
+        self.assertEqual(rx_pkt[ICMPv6EchoReply].code, 0)
+        self.assertEqual(rx_pkt[ICMPv6EchoReply].id,
+                         self.ipv6_udp_or_tcp_map_port)
+
+    #
+    # Translation of ICMP Time Exceeded v4 -> v6 direction
+    # Received packet should be translated into an IPv6 Time Exceeded.
+    #
+
+    def test_map_t_time_exceeded_ip4_to_ip6(self):
+        """ MAP-T time exceeded IPv4 -> IPv6 """
+
+        eth = Ether(src=self.pg0.remote_mac,
+                    dst=self.pg0.local_mac)
+        ip = IP(src=self.pg0.remote_ip4,
+                dst=self.ipv4_map_address)
+        icmp = ICMP(type="time-exceeded", code="ttl-zero-during-transit")
+        ip_inner = IP(dst=self.pg0.remote_ip4,
+                      src=self.ipv4_map_address, ttl=1)
+        udp_inner = UDP(sport=self.ipv4_udp_or_tcp_map_port,
+                        dport=self.ipv4_udp_or_tcp_internet_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
+
+        self.pg_send(self.pg0, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v6_address_check(rx_pkt)
+        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
+        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].type,
+                         ICMPv6TimeExceeded().type)
+        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].code,
+                         ICMPv6TimeExceeded(
+                            code="hop limit exceeded in transit").code)
+        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].hlim, tx_pkt[IP][1].ttl)
+        self.assertTrue(rx_pkt.haslayer(IPerror6))
+        self.assertTrue(rx_pkt.haslayer(UDPerror))
+        self.assertEqual(rx_pkt[IPv6].src, rx_pkt[IPerror6].dst)
+        self.assertEqual(rx_pkt[IPv6].dst, rx_pkt[IPerror6].src)
+        self.assertEqual(rx_pkt[UDPerror].sport, self.ipv6_udp_or_tcp_map_port)
+        self.assertEqual(rx_pkt[UDPerror].dport,
+                         self.ipv6_udp_or_tcp_internet_port)
+
+    #
+    # Translation of ICMP Echo Request v6 -> v4 direction
+    # Received packet should be translated into an IPv4 Echo Request.
+    #
+
+    def test_map_t_echo_request_ip6_to_ip4(self):
+        """ MAP-T echo request IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        icmp = ICMPv6EchoRequest()
+        icmp.id = self.ipv6_udp_or_tcp_map_port
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-request").type)
+        self.assertEqual(rx_pkt[ICMP].code, 0)
+        self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
+
+    #
+    # Translation of ICMP Echo Reply v6 -> v4 direction
+    # Received packet should be translated into an IPv4 Echo Reply.
+    #
+
+    def test_map_t_echo_reply_ip6_to_ip4(self):
+        """ MAP-T echo reply IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        icmp = ICMPv6EchoReply(id=self.ipv6_udp_or_tcp_map_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-reply").type)
+        self.assertEqual(rx_pkt[ICMP].code, 0)
+        self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
+
+    #
+    # Translation of ICMP Packet Too Big v6 -> v4 direction
+    # Received packet should be translated into an IPv4 Dest Unreachable.
+    #
+
+    def test_map_t_packet_too_big_ip6_to_ip4(self):
+        """ MAP-T packet too big IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        icmp = ICMPv6PacketTooBig(mtu=1280)
+        ip_inner = IPv6(src=self.ipv6_map_address,
+                        dst=self.ipv6_cpe_address)
+        udp_inner = UDP(sport=self.ipv6_udp_or_tcp_internet_port,
+                        dport=self.ipv6_udp_or_tcp_map_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v4_address_check(rx_pkt)
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="dest-unreach").type)
+        self.assertEqual(rx_pkt[ICMP].code,
+                         ICMP(code="fragmentation-needed").code)
+        self.assertEqual(rx_pkt[ICMP].nexthopmtu,
+                         tx_pkt[ICMPv6PacketTooBig].mtu - 20)
+        self.assertTrue(rx_pkt.haslayer(IPerror))
+        self.assertTrue(rx_pkt.haslayer(UDPerror))
+        self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
+        self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
+        self.assertEqual(rx_pkt[UDPerror].sport,
+                         self.ipv4_udp_or_tcp_internet_port)
+        self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)
+
+    #
+    # Translation of ICMP Time Exceeded v6 -> v4 direction
+    # Received packet should be translated into an IPv4 Time Exceeded.
+    #
+
+    def test_map_t_time_exceeded_ip6_to_ip4(self):
+        """ MAP-T time exceeded IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        icmp = ICMPv6TimeExceeded()
+        ip_inner = IPv6(src=self.ipv6_map_address,
+                        dst=self.ipv6_cpe_address, hlim=1)
+        udp_inner = UDP(sport=self.ipv6_udp_or_tcp_internet_port,
+                        dport=self.ipv6_udp_or_tcp_map_port)
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg0.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+        self.v4_address_check(rx_pkt)
+        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="time-exceeded").type)
+        self.assertEqual(rx_pkt[ICMP].code,
+                         ICMP(code="ttl-zero-during-transit").code)
+        self.assertEqual(rx_pkt[ICMP].ttl, tx_pkt[IPv6][1].hlim)
+        self.assertTrue(rx_pkt.haslayer(IPerror))
+        self.assertTrue(rx_pkt.haslayer(UDPerror))
+        self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
+        self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
+        self.assertEqual(rx_pkt[UDPerror].sport,
+                         self.ipv4_udp_or_tcp_internet_port)
+        self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)
+
+    #
+    # Spoofed IPv4 Source Address v6 -> v4 direction
+    # Send a packet with a wrong IPv4 address embedded in bits 72-103.
+    # The BR should either drop the packet, or rewrite the spoofed
+    # source IPv4 as the actual source IPv4 address.
+    # The BR really should drop the packet.
+    #
+
+    def test_map_t_spoof_ipv4_src_addr_ip6_to_ip4(self):
+        """ MAP-T spoof ipv4 src addr IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_spoof_address,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv4 spoof address")
+
+    #
+    # Spoofed IPv4 Source Prefix v6 -> v4 direction
+    # Send a packet with a wrong IPv4 prefix embedded in bits 72-103.
+    # The BR should either drop the packet, or rewrite the source IPv4
+    # to the prefix that matches the source IPv4 address.
+    #
+
+    def test_map_t_spoof_ipv4_src_prefix_ip6_to_ip4(self):
+        """ MAP-T spoof ipv4 src prefix IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_spoof_prefix,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv4 spoof prefix")
+
+    #
+    # Spoofed IPv6 PSID v6 -> v4 direction
+    # Send a packet with a wrong IPv6 port PSID
+    # The BR should drop the packet.
+    #
+
+    def test_map_t_spoof_psid_ip6_to_ip4(self):
+        """ MAP-T spoof psid IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_spoof_psid,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv6 spoof PSID")
+
+    #
+    # Spoofed IPv6 subnet field v6 -> v4 direction
+    # Send a packet with a wrong IPv6 subnet as "2001:db8:f1"
+    # The BR should drop the packet.
+    #
+
+    def test_map_t_spoof_subnet_ip6_to_ip4(self):
+        """ MAP-T spoof subnet IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_spoof_subnet,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv6 spoof subnet")
+
+    #
+    # Spoofed IPv6 port PSID v6 -> v4 direction
+    # Send a packet with a wrong IPv6 port PSID
+    # The BR should drop the packet.
+    #
+
+    def test_map_t_spoof_port_psid_ip6_to_ip4(self):
+        """ MAP-T spoof port psid IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_spoof_port,
+                  dport=self.ipv6_udp_or_tcp_internet_port)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv6 spoof port PSID")
+
+    #
+    # Spoofed IPv6 ICMP ID PSID v6 -> v4 direction
+    # Send a packet with a wrong IPv6 IMCP ID PSID
+    # The BR should drop the packet.
+    #
+
+    def test_map_t_spoof_icmp_id_psid_ip6_to_ip4(self):
+        """ MAP-T spoof ICMP id psid IPv6 -> IPv4 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_address)
+        icmp = ICMPv6EchoRequest()
+        icmp.id = self.ipv6_udp_or_tcp_spoof_port
+        payload = "H" * 10
+        tx_pkt = eth / ip / icmp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        self.pg0.get_capture(0, timeout=1)
+        self.pg0.assert_nothing_captured("Should drop IPv6 spoof port PSID")
+
+    #
+    # Map to Map - same rule, different address
+    #
+
+    @unittest.skip("Fixme: correct behavior needs clarification")
+    def test_map_t_same_rule_diff_addr_ip6_to_ip4(self):
+        """ MAP-T same rule, diff addr IPv6 -> IPv6 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_same_rule_diff_addr)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=1025)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+    #
+    # Map to Map - same rule, same address
+    #
+
+    @unittest.skip("Fixme: correct behavior needs clarification")
+    def test_map_t_same_rule_same_addr_ip6_to_ip4(self):
+        """ MAP-T same rule, same addr IPv6 -> IPv6 """
+
+        eth = Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac)
+        ip = IPv6(src=self.ipv6_cpe_address,
+                  dst=self.ipv6_map_same_rule_same_addr)
+        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+                  dport=1025)
+        payload = "a" * 82
+        tx_pkt = eth / ip / udp / payload
+
+        self.pg_send(self.pg1, tx_pkt * 1)
+
+        rx_pkts = self.pg1.get_capture(1)
+        rx_pkt = rx_pkts[0]
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_memif.py b/test/test_memif.py
new file mode 100644
index 0000000..fc7cf9b
--- /dev/null
+++ b/test/test_memif.py
@@ -0,0 +1,308 @@
+import socket
+import unittest
+
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, ICMP
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import tag_run_solo
+from remote_test import RemoteClass, RemoteVppTestCase
+from vpp_memif import remove_all_memif_vpp_config, \
+    VppSocketFilename, VppMemif
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_papi import VppEnum
+
+
+@tag_run_solo
+class TestMemif(VppTestCase):
+    """ Memif Test Case """
+    remote_class = RemoteVppTestCase
+
+    @classmethod
+    def get_cpus_required(cls):
+        return (super().get_cpus_required() +
+                cls.remote_class.get_cpus_required())
+
+    @classmethod
+    def assign_cpus(cls, cpus):
+        remote_cpus = cpus[:cls.remote_class.get_cpus_required()]
+        my_cpus = cpus[cls.remote_class.get_cpus_required():]
+        cls.remote_class.assign_cpus(remote_cpus)
+        super().assign_cpus(my_cpus)
+
+    @classmethod
+    def setUpClass(cls):
+        # fork new process before client connects to VPP
+        cls.remote_test = RemoteClass(cls.remote_class)
+        cls.remote_test.start_remote()
+        cls.remote_test.set_request_timeout(10)
+        super(TestMemif, cls).setUpClass()
+        cls.remote_test.setUpClass(cls.tempdir)
+        cls.create_pg_interfaces(range(1))
+        for pg in cls.pg_interfaces:
+            pg.config_ip4()
+            pg.admin_up()
+            pg.resolve_arp()
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.remote_test.tearDownClass()
+        cls.remote_test.quit_remote()
+        for pg in cls.pg_interfaces:
+            pg.unconfig_ip4()
+            pg.set_table_ip4(0)
+            pg.admin_down()
+        super(TestMemif, cls).tearDownClass()
+
+    def tearDown(self):
+        remove_all_memif_vpp_config(self)
+        remove_all_memif_vpp_config(self.remote_test)
+        super(TestMemif, self).tearDown()
+
+    def _check_socket_filename(self, dump, socket_id, filename):
+        for d in dump:
+            if (d.socket_id == socket_id) and (
+                    d.socket_filename == filename):
+                return True
+        return False
+
+    def test_memif_socket_filename_add_del(self):
+        """ Memif socket filename add/del """
+
+        # dump default socket filename
+        dump = self.vapi.memif_socket_filename_dump()
+        self.assertTrue(
+            self._check_socket_filename(
+                dump, 0, "%s/memif.sock" % self.tempdir))
+
+        memif_sockets = []
+        # existing path
+        memif_sockets.append(
+            VppSocketFilename(
+                self, 1, "%s/memif1.sock" % self.tempdir))
+        # default path (test tempdir)
+        memif_sockets.append(
+            VppSocketFilename(
+                self,
+                2,
+                "memif2.sock",
+                add_default_folder=True))
+        # create new folder in default folder
+        memif_sockets.append(
+            VppSocketFilename(
+                self,
+                3,
+                "sock/memif3.sock",
+                add_default_folder=True))
+
+        for sock in memif_sockets:
+            sock.add_vpp_config()
+            dump = sock.query_vpp_config()
+            self.assertTrue(
+                self._check_socket_filename(
+                    dump,
+                    sock.socket_id,
+                    sock.socket_filename))
+
+        for sock in memif_sockets:
+            sock.remove_vpp_config()
+
+        dump = self.vapi.memif_socket_filename_dump()
+        self.assertTrue(
+            self._check_socket_filename(
+                dump, 0, "%s/memif.sock" % self.tempdir))
+
+    def _create_delete_test_one_interface(self, memif):
+        memif.add_vpp_config()
+
+        dump = memif.query_vpp_config()
+
+        self.assertTrue(dump)
+        self.assertEqual(dump.sw_if_index, memif.sw_if_index)
+        self.assertEqual(dump.role, memif.role)
+        self.assertEqual(dump.mode, memif.mode)
+        if (memif.socket_id is not None):
+            self.assertEqual(dump.socket_id, memif.socket_id)
+
+        memif.remove_vpp_config()
+
+        dump = memif.query_vpp_config()
+
+        self.assertFalse(dump)
+
+    def _connect_test_one_interface(self, memif):
+        self.assertTrue(memif.wait_for_link_up(5))
+        dump = memif.query_vpp_config()
+
+        if memif.role == VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE:
+            self.assertEqual(dump.ring_size, memif.ring_size)
+            self.assertEqual(dump.buffer_size, memif.buffer_size)
+        else:
+            self.assertEqual(dump.ring_size, 1)
+            self.assertEqual(dump.buffer_size, 0)
+
+    def _connect_test_interface_pair(self, memif0, memif1):
+        memif0.add_vpp_config()
+        memif1.add_vpp_config()
+
+        memif0.admin_up()
+        memif1.admin_up()
+
+        self._connect_test_one_interface(memif0)
+        self._connect_test_one_interface(memif1)
+
+        memif0.remove_vpp_config()
+        memif1.remove_vpp_config()
+
+    def test_memif_create_delete(self):
+        """ Memif create/delete interface """
+
+        memif = VppMemif(
+            self,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET)
+        self._create_delete_test_one_interface(memif)
+        memif.role = VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER
+        self._create_delete_test_one_interface(memif)
+
+    def test_memif_create_custom_socket(self):
+        """ Memif create with non-default socket filename """
+
+        memif_sockets = []
+        # existing path
+        memif_sockets.append(
+            VppSocketFilename(
+                self, 1, "%s/memif1.sock" % self.tempdir))
+        # default path (test tempdir)
+        memif_sockets.append(
+            VppSocketFilename(
+                self,
+                2,
+                "memif2.sock",
+                add_default_folder=True))
+        # create new folder in default folder
+        memif_sockets.append(
+            VppSocketFilename(
+                self,
+                3,
+                "sock/memif3.sock",
+                add_default_folder=True))
+
+        memif = VppMemif(
+            self,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET)
+
+        for sock in memif_sockets:
+            sock.add_vpp_config()
+            memif.socket_id = sock.socket_id
+            memif.role = VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE
+            self._create_delete_test_one_interface(memif)
+            memif.role = VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER
+            self._create_delete_test_one_interface(memif)
+
+    def test_memif_connect(self):
+        """ Memif connect """
+        memif = VppMemif(
+            self,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            ring_size=1024,
+            buffer_size=2048,
+            secret="abc")
+
+        remote_socket = VppSocketFilename(self.remote_test, 1,
+                                          "%s/memif.sock" % self.tempdir)
+        remote_socket.add_vpp_config()
+
+        remote_memif = VppMemif(
+            self.remote_test,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=1,
+            ring_size=1024,
+            buffer_size=2048,
+            secret="abc")
+
+        self._connect_test_interface_pair(memif, remote_memif)
+
+        memif.role = VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER
+        remote_memif.role = VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE
+
+        self._connect_test_interface_pair(memif, remote_memif)
+
+    def _create_icmp(self, pg, memif, num):
+        pkts = []
+        for i in range(num):
+            pkt = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
+                   IP(src=pg.remote_ip4,
+                      dst=str(memif.ip_prefix.network_address)) /
+                   ICMP(id=memif.if_id, type='echo-request', seq=i))
+            pkts.append(pkt)
+        return pkts
+
+    def _verify_icmp(self, pg, memif, rx, seq):
+        ip = rx[IP]
+        self.assertEqual(ip.src, str(memif.ip_prefix.network_address))
+        self.assertEqual(ip.dst, pg.remote_ip4)
+        self.assertEqual(ip.proto, 1)
+        icmp = rx[ICMP]
+        self.assertEqual(icmp.type, 0)  # echo-reply
+        self.assertEqual(icmp.id, memif.if_id)
+        self.assertEqual(icmp.seq, seq)
+
+    def test_memif_ping(self):
+        """ Memif ping """
+
+        memif = VppMemif(
+            self,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_SLAVE,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET)
+
+        remote_socket = VppSocketFilename(self.remote_test, 1,
+                                          "%s/memif.sock" % self.tempdir)
+        remote_socket.add_vpp_config()
+
+        remote_memif = VppMemif(
+            self.remote_test,
+            VppEnum.vl_api_memif_role_t.MEMIF_ROLE_API_MASTER,
+            VppEnum.vl_api_memif_mode_t.MEMIF_MODE_API_ETHERNET,
+            socket_id=1)
+
+        memif.add_vpp_config()
+        memif.config_ip4()
+        memif.admin_up()
+
+        remote_memif.add_vpp_config()
+        remote_memif.config_ip4()
+        remote_memif.admin_up()
+
+        self.assertTrue(memif.wait_for_link_up(5))
+        self.assertTrue(remote_memif.wait_for_link_up(5))
+
+        # add routing to remote vpp
+        route = VppIpRoute(self.remote_test, self.pg0._local_ip4_subnet, 24,
+                           [VppRoutePath(memif.ip_prefix.network_address,
+                                         0xffffffff)],
+                           register=False)
+
+        route.add_vpp_config()
+
+        # create ICMP echo-request from local pg to remote memif
+        packet_num = 10
+        pkts = self._create_icmp(self.pg0, remote_memif, packet_num)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(packet_num, timeout=2)
+        seq = 0
+        for c in capture:
+            self._verify_icmp(self.pg0, remote_memif, c, seq)
+            seq += 1
+
+        route.remove_vpp_config()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_mss_clamp.py b/test/test_mss_clamp.py
new file mode 100644
index 0000000..23495b6
--- /dev/null
+++ b/test/test_mss_clamp.py
@@ -0,0 +1,295 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+
+from scapy.layers.inet import IP, TCP
+from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+
+
+class TestMSSClamp(VppTestCase):
+    """ TCP MSS Clamping Test Case """
+
+    def setUp(self):
+        super(TestMSSClamp, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestMSSClamp, self).tearDown()
+
+    def verify_pkt(self, rx, expected_mss):
+        # check that the MSS size equals the expected value
+        # and the IP and TCP checksums are correct
+        tcp = rx[TCP]
+        tcp_csum = tcp.chksum
+        del tcp.chksum
+        ip_csum = 0
+        if (rx.haslayer(IP)):
+            ip_csum = rx[IP].chksum
+            del rx[IP].chksum
+
+        opt = tcp.options
+        self.assertEqual(opt[0][0], 'MSS')
+        self.assertEqual(opt[0][1], expected_mss)
+        # recalculate checksums
+        rx = rx.__class__(bytes(rx))
+        tcp = rx[TCP]
+        self.assertEqual(tcp_csum, tcp.chksum)
+        if (rx.haslayer(IP)):
+            self.assertEqual(ip_csum, rx[IP].chksum)
+
+    def send_and_verify_ip4(self, src_pg, dst_pg, mss, expected_mss):
+        # IPv4 TCP packet with the requested MSS option.
+        # from a host on src_pg to a host on dst_pg.
+        p = (Ether(dst=src_pg.local_mac,
+                   src=src_pg.remote_mac) /
+             IP(src=src_pg.remote_ip4,
+                dst=dst_pg.remote_ip4) /
+             TCP(sport=1234, dport=1234,
+                 flags="S",
+                 options=[('MSS', (mss)), ('EOL', None)]) /
+             Raw('\xa5' * 100))
+
+        rxs = self.send_and_expect(src_pg, p * 65, dst_pg)
+
+        for rx in rxs:
+            self.verify_pkt(rx, expected_mss)
+
+    def send_and_verify_ip6(self, src_pg, dst_pg, mss, expected_mss):
+        #
+        # IPv6 TCP packet with the requested MSS option.
+        # from a host on src_pg to a host on dst_pg.
+        #
+        p = (Ether(dst=src_pg.local_mac,
+                   src=src_pg.remote_mac) /
+             IPv6(src=src_pg.remote_ip6,
+                  dst=dst_pg.remote_ip6) /
+             TCP(sport=1234, dport=1234,
+                 flags="S",
+                 options=[('MSS', (mss)), ('EOL', None)]) /
+             Raw('\xa5' * 100))
+
+        rxs = self.send_and_expect(src_pg, p * 65, dst_pg)
+
+        for rx in rxs:
+            self.verify_pkt(rx, expected_mss)
+
+    def test_tcp_mss_clamping_ip4_tx(self):
+        """ IP4 TCP MSS Clamping TX """
+
+        # enable the TCP MSS clamping feature to lower the MSS to 1424.
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1424, ipv6_mss=0,
+                                           ipv4_direction=3, ipv6_direction=0)
+
+        # Verify that the feature is enabled.
+        rv, reply = self.vapi.mss_clamp_get(sw_if_index=self.pg1.sw_if_index)
+        self.assertEqual(reply[0].ipv4_mss, 1424)
+        self.assertEqual(reply[0].ipv4_direction, 3)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip4(self.pg0, self.pg1, 1460, 1424)
+
+        # check the stats
+        stats = self.statistics.get_counter(
+            '/err/tcp-mss-clamping-ip4-out/clamped')
+        self.assertEqual(sum(stats), 65)
+
+        # Send syn packets with small enough MSS values and verify they are
+        # unchanged.
+        self.send_and_verify_ip4(self.pg0, self.pg1, 1400, 1400)
+
+        # enable the the feature only in TX direction
+        # and change the max MSS value
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1420, ipv6_mss=0,
+                                           ipv4_direction=2, ipv6_direction=0)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip4(self.pg0, self.pg1, 1460, 1420)
+
+        # enable the the feature only in RX direction
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1424, ipv6_mss=0,
+                                           ipv4_direction=1, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip4(self.pg0, self.pg1, 1460, 1460)
+
+        # disable the feature
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=0,
+                                           ipv4_direction=0, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip4(self.pg0, self.pg1, 1460, 1460)
+
+    def test_tcp_mss_clamping_ip4_rx(self):
+        """ IP4 TCP MSS Clamping RX """
+
+        # enable the TCP MSS clamping feature to lower the MSS to 1424.
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1424, ipv6_mss=0,
+                                           ipv4_direction=3, ipv6_direction=0)
+
+        # Verify that the feature is enabled.
+        rv, reply = self.vapi.mss_clamp_get(sw_if_index=self.pg1.sw_if_index)
+        self.assertEqual(reply[0].ipv4_mss, 1424)
+        self.assertEqual(reply[0].ipv4_direction, 3)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip4(self.pg1, self.pg0, 1460, 1424)
+
+        # check the stats
+        stats = self.statistics.get_counter(
+            '/err/tcp-mss-clamping-ip4-in/clamped')
+        self.assertEqual(sum(stats), 65)
+
+        # Send syn packets with small enough MSS values and verify they are
+        # unchanged.
+        self.send_and_verify_ip4(self.pg1, self.pg0, 1400, 1400)
+
+        # enable the the feature only in RX direction
+        # and change the max MSS value
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1420, ipv6_mss=0,
+                                           ipv4_direction=1, ipv6_direction=0)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip4(self.pg1, self.pg0, 1460, 1420)
+
+        # enable the the feature only in TX direction
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=1424, ipv6_mss=0,
+                                           ipv4_direction=2, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip4(self.pg1, self.pg0, 1460, 1460)
+
+        # disable the feature
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=0,
+                                           ipv4_direction=0, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip4(self.pg1, self.pg0, 1460, 1460)
+
+    def test_tcp_mss_clamping_ip6_tx(self):
+        """ IP6 TCP MSS Clamping TX """
+
+        # enable the TCP MSS clamping feature to lower the MSS to 1424.
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1424,
+                                           ipv4_direction=0, ipv6_direction=3)
+
+        # Verify that the feature is enabled.
+        rv, reply = self.vapi.mss_clamp_get(sw_if_index=self.pg1.sw_if_index)
+        self.assertEqual(reply[0].ipv6_mss, 1424)
+        self.assertEqual(reply[0].ipv6_direction, 3)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip6(self.pg0, self.pg1, 1460, 1424)
+
+        # check the stats
+        stats = self.statistics.get_counter(
+            '/err/tcp-mss-clamping-ip6-out/clamped')
+        self.assertEqual(sum(stats), 65)
+
+        # Send syn packets with small enough MSS values and verify they are
+        # unchanged.
+        self.send_and_verify_ip6(self.pg0, self.pg1, 1400, 1400)
+
+        # enable the the feature only in TX direction
+        # and change the max MSS value
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1420,
+                                           ipv4_direction=0, ipv6_direction=2)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip6(self.pg0, self.pg1, 1460, 1420)
+
+        # enable the the feature only in RX direction
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1424,
+                                           ipv4_direction=0, ipv6_direction=1)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip6(self.pg0, self.pg1, 1460, 1460)
+
+        # disable the feature
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=0,
+                                           ipv4_direction=0, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip6(self.pg0, self.pg1, 1460, 1460)
+
+    def test_tcp_mss_clamping_ip6_rx(self):
+        """ IP6 TCP MSS Clamping RX """
+
+        # enable the TCP MSS clamping feature to lower the MSS to 1424.
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1424,
+                                           ipv4_direction=0, ipv6_direction=3)
+
+        # Verify that the feature is enabled.
+        rv, reply = self.vapi.mss_clamp_get(sw_if_index=self.pg1.sw_if_index)
+        self.assertEqual(reply[0].ipv6_mss, 1424)
+        self.assertEqual(reply[0].ipv6_direction, 3)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip6(self.pg1, self.pg0, 1460, 1424)
+
+        # check the stats
+        stats = self.statistics.get_counter(
+            '/err/tcp-mss-clamping-ip6-in/clamped')
+        self.assertEqual(sum(stats), 65)
+
+        # Send syn packets with small enough MSS values and verify they are
+        # unchanged.
+        self.send_and_verify_ip6(self.pg1, self.pg0, 1400, 1400)
+
+        # enable the the feature only in RX direction
+        # and change the max MSS value
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1420,
+                                           ipv4_direction=0, ipv6_direction=1)
+
+        # Send syn packets and verify that the MSS value is lowered.
+        self.send_and_verify_ip6(self.pg1, self.pg0, 1460, 1420)
+
+        # enable the the feature only in TX direction
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=1424,
+                                           ipv4_direction=0, ipv6_direction=2)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip6(self.pg1, self.pg0, 1460, 1460)
+
+        # disable the feature
+        self.vapi.mss_clamp_enable_disable(self.pg1.sw_if_index,
+                                           ipv4_mss=0, ipv6_mss=0,
+                                           ipv4_direction=0, ipv6_direction=0)
+
+        # Send the packets again and ensure they are unchanged.
+        self.send_and_verify_ip6(self.pg1, self.pg0, 1460, 1460)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_nat44_ed.py b/test/test_nat44_ed.py
new file mode 100644
index 0000000..2ce7f23
--- /dev/null
+++ b/test/test_nat44_ed.py
@@ -0,0 +1,3662 @@
+#!/usr/bin/env python3
+
+import unittest
+from io import BytesIO
+from random import randint, shuffle, choice
+
+import scapy.compat
+from framework import VppTestCase, VppTestRunner
+from scapy.data import IP_PROTOS
+from scapy.layers.inet import IP, TCP, UDP, ICMP, GRE
+from scapy.layers.inet import IPerror, TCPerror
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ppp, ip4_range
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_papi import VppEnum
+
+
+class NAT44EDTestCase(VppTestCase):
+
+    nat_addr = '10.0.0.3'
+
+    tcp_port_in = 6303
+    tcp_port_out = 6303
+
+    udp_port_in = 6304
+    udp_port_out = 6304
+
+    icmp_id_in = 6305
+    icmp_id_out = 6305
+
+    tcp_external_port = 80
+
+    max_sessions = 100
+
+    def setUp(self):
+        super(NAT44EDTestCase, self).setUp()
+        self.plugin_enable()
+
+    def tearDown(self):
+        super(NAT44EDTestCase, self).tearDown()
+        if not self.vpp_dead:
+            self.plugin_disable()
+
+    def plugin_enable(self):
+        self.vapi.nat44_ed_plugin_enable_disable(
+            sessions=self.max_sessions, enable=1)
+
+    def plugin_disable(self):
+        self.vapi.nat44_ed_plugin_enable_disable(enable=0)
+
+    @property
+    def config_flags(self):
+        return VppEnum.vl_api_nat_config_flags_t
+
+    @property
+    def nat44_config_flags(self):
+        return VppEnum.vl_api_nat44_config_flags_t
+
+    @property
+    def syslog_severity(self):
+        return VppEnum.vl_api_syslog_severity_t
+
+    @property
+    def server_addr(self):
+        return self.pg1.remote_hosts[0].ip4
+
+    @staticmethod
+    def random_port():
+        return randint(1025, 65535)
+
+    @staticmethod
+    def proto2layer(proto):
+        if proto == IP_PROTOS.tcp:
+            return TCP
+        elif proto == IP_PROTOS.udp:
+            return UDP
+        elif proto == IP_PROTOS.icmp:
+            return ICMP
+        else:
+            raise Exception("Unsupported protocol")
+
+    @classmethod
+    def create_and_add_ip4_table(cls, i, table_id=0):
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': table_id})
+        i.set_table_ip4(table_id)
+
+    @classmethod
+    def configure_ip4_interface(cls, i, hosts=0, table_id=None):
+        if table_id:
+            cls.create_and_add_ip4_table(i, table_id)
+
+        i.admin_up()
+        i.config_ip4()
+        i.resolve_arp()
+
+        if hosts:
+            i.generate_remote_hosts(hosts)
+            i.configure_ipv4_neighbors()
+
+    @classmethod
+    def nat_add_interface_address(cls, i):
+        cls.vapi.nat44_add_del_interface_addr(
+            sw_if_index=i.sw_if_index, is_add=1)
+
+    def nat_add_inside_interface(self, i):
+        self.vapi.nat44_interface_add_del_feature(
+            flags=self.config_flags.NAT_IS_INSIDE,
+            sw_if_index=i.sw_if_index, is_add=1)
+
+    def nat_add_outside_interface(self, i):
+        self.vapi.nat44_interface_add_del_feature(
+            flags=self.config_flags.NAT_IS_OUTSIDE,
+            sw_if_index=i.sw_if_index, is_add=1)
+
+    def nat_add_address(self, address, twice_nat=0,
+                        vrf_id=0xFFFFFFFF, is_add=1):
+        flags = self.config_flags.NAT_IS_TWICE_NAT if twice_nat else 0
+        self.vapi.nat44_add_del_address_range(first_ip_address=address,
+                                              last_ip_address=address,
+                                              vrf_id=vrf_id,
+                                              is_add=is_add,
+                                              flags=flags)
+
+    def nat_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
+                               local_port=0, external_port=0, vrf_id=0,
+                               is_add=1, external_sw_if_index=0xFFFFFFFF,
+                               proto=0, tag="", flags=0):
+
+        if not (local_port and external_port):
+            flags |= self.config_flags.NAT_IS_ADDR_ONLY
+
+        self.vapi.nat44_add_del_static_mapping(
+            is_add=is_add,
+            local_ip_address=local_ip,
+            external_ip_address=external_ip,
+            external_sw_if_index=external_sw_if_index,
+            local_port=local_port,
+            external_port=external_port,
+            vrf_id=vrf_id, protocol=proto,
+            flags=flags,
+            tag=tag)
+
+    @classmethod
+    def setUpClass(cls):
+        super(NAT44EDTestCase, cls).setUpClass()
+
+        cls.create_pg_interfaces(range(12))
+        cls.interfaces = list(cls.pg_interfaces[:4])
+
+        cls.create_and_add_ip4_table(cls.pg2, 10)
+
+        for i in cls.interfaces:
+            cls.configure_ip4_interface(i, hosts=3)
+
+        # test specific (test-multiple-vrf)
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 1})
+
+        # test specific (test-one-armed-nat44-static)
+        cls.pg4.generate_remote_hosts(2)
+        cls.pg4.config_ip4()
+        cls.vapi.sw_interface_add_del_address(
+            sw_if_index=cls.pg4.sw_if_index,
+            prefix="10.0.0.1/24")
+        cls.pg4.admin_up()
+        cls.pg4.resolve_arp()
+        cls.pg4._remote_hosts[1]._ip4 = cls.pg4._remote_hosts[0]._ip4
+        cls.pg4.resolve_arp()
+
+        # test specific interface (pg5)
+        cls.pg5._local_ip4 = "10.1.1.1"
+        cls.pg5._remote_hosts[0]._ip4 = "10.1.1.2"
+        cls.pg5.set_table_ip4(1)
+        cls.pg5.config_ip4()
+        cls.pg5.admin_up()
+        cls.pg5.resolve_arp()
+
+        # test specific interface (pg6)
+        cls.pg6._local_ip4 = "10.1.2.1"
+        cls.pg6._remote_hosts[0]._ip4 = "10.1.2.2"
+        cls.pg6.set_table_ip4(1)
+        cls.pg6.config_ip4()
+        cls.pg6.admin_up()
+        cls.pg6.resolve_arp()
+
+        rl = list()
+
+        rl.append(VppIpRoute(cls, "0.0.0.0", 0,
+                             [VppRoutePath("0.0.0.0", 0xffffffff,
+                                           nh_table_id=0)],
+                             register=False, table_id=1))
+        rl.append(VppIpRoute(cls, "0.0.0.0", 0,
+                             [VppRoutePath(cls.pg1.local_ip4,
+                                           cls.pg1.sw_if_index)],
+                             register=False))
+        rl.append(VppIpRoute(cls, cls.pg5.remote_ip4, 32,
+                             [VppRoutePath("0.0.0.0",
+                                           cls.pg5.sw_if_index)],
+                             register=False, table_id=1))
+        rl.append(VppIpRoute(cls, cls.pg6.remote_ip4, 32,
+                             [VppRoutePath("0.0.0.0",
+                                           cls.pg6.sw_if_index)],
+                             register=False, table_id=1))
+        rl.append(VppIpRoute(cls, cls.pg6.remote_ip4, 16,
+                             [VppRoutePath("0.0.0.0", 0xffffffff,
+                                           nh_table_id=1)],
+                             register=False, table_id=0))
+
+        for r in rl:
+            r.add_vpp_config()
+
+    def get_err_counter(self, path):
+        return self.statistics.get_err_counter(path)
+
+    def reass_hairpinning(self, server_addr, server_in_port, server_out_port,
+                          host_in_port, proto=IP_PROTOS.tcp,
+                          ignore_port=False):
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+
+        # send packet from host to server
+        pkts = self.create_stream_frag(self.pg0,
+                                       self.nat_addr,
+                                       host_in_port,
+                                       server_out_port,
+                                       data,
+                                       proto)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.nat_addr,
+                                        server_addr)
+        if proto != IP_PROTOS.icmp:
+            if not ignore_port:
+                self.assertNotEqual(p[layer].sport, host_in_port)
+            self.assertEqual(p[layer].dport, server_in_port)
+        else:
+            if not ignore_port:
+                self.assertNotEqual(p[layer].id, host_in_port)
+        self.assertEqual(data, p[Raw].load)
+
+    def frag_out_of_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+                          ignore_port=False):
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        self.port_in = self.random_port()
+
+        for i in range(2):
+            # in2out
+            pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+                                           self.port_in, 20, data, proto)
+            pkts.reverse()
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg1.get_capture(len(pkts))
+            if not dont_translate:
+                p = self.reass_frags_and_verify(frags,
+                                                self.nat_addr,
+                                                self.pg1.remote_ip4)
+            else:
+                p = self.reass_frags_and_verify(frags,
+                                                self.pg0.remote_ip4,
+                                                self.pg1.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                if not dont_translate:
+                    self.assertEqual(p[layer].dport, 20)
+                    if not ignore_port:
+                        self.assertNotEqual(p[layer].sport, self.port_in)
+                else:
+                    self.assertEqual(p[layer].sport, self.port_in)
+            else:
+                if not ignore_port:
+                    if not dont_translate:
+                        self.assertNotEqual(p[layer].id, self.port_in)
+                    else:
+                        self.assertEqual(p[layer].id, self.port_in)
+            self.assertEqual(data, p[Raw].load)
+
+            # out2in
+            if not dont_translate:
+                dst_addr = self.nat_addr
+            else:
+                dst_addr = self.pg0.remote_ip4
+            if proto != IP_PROTOS.icmp:
+                sport = 20
+                dport = p[layer].sport
+            else:
+                sport = p[layer].id
+                dport = 0
+            pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport,
+                                           data, proto, echo_reply=True)
+            pkts.reverse()
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.logger.info(self.vapi.cli("show trace"))
+            self.pg_start()
+            frags = self.pg0.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg1.remote_ip4,
+                                            self.pg0.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].sport, 20)
+                self.assertEqual(p[layer].dport, self.port_in)
+            else:
+                self.assertEqual(p[layer].id, self.port_in)
+            self.assertEqual(data, p[Raw].load)
+
+    def reass_frags_and_verify(self, frags, src, dst):
+        buffer = BytesIO()
+        for p in frags:
+            self.assertEqual(p[IP].src, src)
+            self.assertEqual(p[IP].dst, dst)
+            self.assert_ip_checksum_valid(p)
+            buffer.seek(p[IP].frag * 8)
+            buffer.write(bytes(p[IP].payload))
+        ip = IP(src=frags[0][IP].src, dst=frags[0][IP].dst,
+                proto=frags[0][IP].proto)
+        if ip.proto == IP_PROTOS.tcp:
+            p = (ip / TCP(buffer.getvalue()))
+            self.logger.debug(ppp("Reassembled:", p))
+            self.assert_tcp_checksum_valid(p)
+        elif ip.proto == IP_PROTOS.udp:
+            p = (ip / UDP(buffer.getvalue()[:8]) /
+                 Raw(buffer.getvalue()[8:]))
+        elif ip.proto == IP_PROTOS.icmp:
+            p = (ip / ICMP(buffer.getvalue()))
+        return p
+
+    def frag_in_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+                      ignore_port=False):
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        self.port_in = self.random_port()
+
+        # in2out
+        pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+                                       self.port_in, 20, data, proto)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg1.get_capture(len(pkts))
+        if not dont_translate:
+            p = self.reass_frags_and_verify(frags,
+                                            self.nat_addr,
+                                            self.pg1.remote_ip4)
+        else:
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg0.remote_ip4,
+                                            self.pg1.remote_ip4)
+        if proto != IP_PROTOS.icmp:
+            if not dont_translate:
+                self.assertEqual(p[layer].dport, 20)
+                if not ignore_port:
+                    self.assertNotEqual(p[layer].sport, self.port_in)
+            else:
+                self.assertEqual(p[layer].sport, self.port_in)
+        else:
+            if not ignore_port:
+                if not dont_translate:
+                    self.assertNotEqual(p[layer].id, self.port_in)
+                else:
+                    self.assertEqual(p[layer].id, self.port_in)
+        self.assertEqual(data, p[Raw].load)
+
+        # out2in
+        if not dont_translate:
+            dst_addr = self.nat_addr
+        else:
+            dst_addr = self.pg0.remote_ip4
+        if proto != IP_PROTOS.icmp:
+            sport = 20
+            dport = p[layer].sport
+        else:
+            sport = p[layer].id
+            dport = 0
+        pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport, data,
+                                       proto, echo_reply=True)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.pg1.remote_ip4,
+                                        self.pg0.remote_ip4)
+        if proto != IP_PROTOS.icmp:
+            self.assertEqual(p[layer].sport, 20)
+            self.assertEqual(p[layer].dport, self.port_in)
+        else:
+            self.assertEqual(p[layer].id, self.port_in)
+        self.assertEqual(data, p[Raw].load)
+
+    def verify_capture_out(self, capture, nat_ip=None, same_port=False,
+                           dst_ip=None, ignore_port=False):
+        if nat_ip is None:
+            nat_ip = self.nat_addr
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP].src, nat_ip)
+                if dst_ip is not None:
+                    self.assertEqual(packet[IP].dst, dst_ip)
+                if packet.haslayer(TCP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[ICMP].id, self.icmp_id_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[ICMP].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP].id
+                    self.assert_packet_checksums_valid(packet)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+    def verify_capture_in(self, capture, in_if):
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP].dst, in_if.remote_ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+    def create_stream_in(self, in_if, out_if, dst_ip=None, ttl=64):
+        if dst_ip is None:
+            dst_ip = out_if.remote_ip4
+
+        pkts = []
+        # TCP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        pkts.extend([p, p])
+
+        # UDP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(sport=self.udp_port_in, dport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+
+        return pkts
+
+    def create_stream_out(self, out_if, dst_ip=None, ttl=64,
+                          use_inside_ports=False):
+        if dst_ip is None:
+            dst_ip = self.nat_addr
+        if not use_inside_ports:
+            tcp_port = self.tcp_port_out
+            udp_port = self.udp_port_out
+            icmp_id = self.icmp_id_out
+        else:
+            tcp_port = self.tcp_port_in
+            udp_port = self.udp_port_in
+            icmp_id = self.icmp_id_in
+        pkts = []
+        # TCP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(dport=tcp_port, sport=20))
+        pkts.extend([p, p])
+
+        # UDP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(dport=udp_port, sport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=icmp_id, type='echo-reply'))
+        pkts.append(p)
+
+        return pkts
+
+    def create_tcp_stream(self, in_if, out_if, count):
+        pkts = []
+        port = 6303
+
+        for i in range(count):
+            p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+                 IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=64) /
+                 TCP(sport=port + i, dport=20))
+            pkts.append(p)
+
+        return pkts
+
+    def create_stream_frag(self, src_if, dst, sport, dport, data,
+                           proto=IP_PROTOS.tcp, echo_reply=False):
+        if proto == IP_PROTOS.tcp:
+            p = (IP(src=src_if.remote_ip4, dst=dst) /
+                 TCP(sport=sport, dport=dport) /
+                 Raw(data))
+            p = p.__class__(scapy.compat.raw(p))
+            chksum = p[TCP].chksum
+            proto_header = TCP(sport=sport, dport=dport, chksum=chksum)
+        elif proto == IP_PROTOS.udp:
+            proto_header = UDP(sport=sport, dport=dport)
+        elif proto == IP_PROTOS.icmp:
+            if not echo_reply:
+                proto_header = ICMP(id=sport, type='echo-request')
+            else:
+                proto_header = ICMP(id=sport, type='echo-reply')
+        else:
+            raise Exception("Unsupported protocol")
+        id = self.random_port()
+        pkts = []
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[0:4])
+        else:
+            raw = Raw(data[0:16])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=0, id=id) /
+             proto_header /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[4:20])
+        else:
+            raw = Raw(data[16:32])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=3, id=id,
+                proto=proto) /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[20:])
+        else:
+            raw = Raw(data[32:])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, frag=5, proto=proto,
+                id=id) /
+             raw)
+        pkts.append(p)
+        return pkts
+
+    def frag_in_order_in_plus_out(self, in_addr, out_addr, in_port, out_port,
+                                  proto=IP_PROTOS.tcp):
+
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        port_in = self.random_port()
+
+        for i in range(2):
+            # out2in
+            pkts = self.create_stream_frag(self.pg0, out_addr,
+                                           port_in, out_port,
+                                           data, proto)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg1.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg0.remote_ip4,
+                                            in_addr)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].sport, port_in)
+                self.assertEqual(p[layer].dport, in_port)
+            else:
+                self.assertEqual(p[layer].id, port_in)
+            self.assertEqual(data, p[Raw].load)
+
+            # in2out
+            if proto != IP_PROTOS.icmp:
+                pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+                                               in_port,
+                                               p[layer].sport, data, proto)
+            else:
+                pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+                                               p[layer].id, 0, data, proto,
+                                               echo_reply=True)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg0.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            out_addr,
+                                            self.pg0.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].sport, out_port)
+                self.assertEqual(p[layer].dport, port_in)
+            else:
+                self.assertEqual(p[layer].id, port_in)
+            self.assertEqual(data, p[Raw].load)
+
+    def frag_out_of_order_in_plus_out(self, in_addr, out_addr, in_port,
+                                      out_port, proto=IP_PROTOS.tcp):
+
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        port_in = self.random_port()
+
+        for i in range(2):
+            # out2in
+            pkts = self.create_stream_frag(self.pg0, out_addr,
+                                           port_in, out_port,
+                                           data, proto)
+            pkts.reverse()
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg1.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg0.remote_ip4,
+                                            in_addr)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].dport, in_port)
+                self.assertEqual(p[layer].sport, port_in)
+                self.assertEqual(p[layer].dport, in_port)
+            else:
+                self.assertEqual(p[layer].id, port_in)
+            self.assertEqual(data, p[Raw].load)
+
+            # in2out
+            if proto != IP_PROTOS.icmp:
+                pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+                                               in_port,
+                                               p[layer].sport, data, proto)
+            else:
+                pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+                                               p[layer].id, 0, data, proto,
+                                               echo_reply=True)
+            pkts.reverse()
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg0.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            out_addr,
+                                            self.pg0.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].sport, out_port)
+                self.assertEqual(p[layer].dport, port_in)
+            else:
+                self.assertEqual(p[layer].id, port_in)
+            self.assertEqual(data, p[Raw].load)
+
+    def init_tcp_session(self, in_if, out_if, in_port, ext_port):
+        # SYN packet in->out
+        p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port, flags="S"))
+        in_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = out_if.get_capture(1)
+        p = capture[0]
+        out_port = p[TCP].sport
+
+        # SYN + ACK packet out->in
+        p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
+             IP(src=out_if.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port, flags="SA"))
+        out_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        in_if.get_capture(1)
+
+        # ACK packet in->out
+        p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port, flags="A"))
+        in_if.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        out_if.get_capture(1)
+
+        return out_port
+
+    def twice_nat_common(self, self_twice_nat=False, same_pg=False, lb=False,
+                         client_id=None):
+        twice_nat_addr = '10.0.1.3'
+
+        port_in = 8080
+        if lb:
+            if not same_pg:
+                port_in1 = port_in
+                port_in2 = port_in
+            else:
+                port_in1 = port_in + 1
+                port_in2 = port_in + 2
+
+        port_out = 80
+        eh_port_out = 4567
+
+        server1 = self.pg0.remote_hosts[0]
+        server2 = self.pg0.remote_hosts[1]
+        if lb and same_pg:
+            server2 = server1
+        if not lb:
+            server = server1
+
+        pg0 = self.pg0
+        if same_pg:
+            pg1 = self.pg0
+        else:
+            pg1 = self.pg1
+
+        eh_translate = ((not self_twice_nat) or (not lb and same_pg) or
+                        client_id == 1)
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_address(twice_nat_addr, twice_nat=1)
+
+        flags = 0
+        if self_twice_nat:
+            flags |= self.config_flags.NAT_IS_SELF_TWICE_NAT
+        else:
+            flags |= self.config_flags.NAT_IS_TWICE_NAT
+
+        if not lb:
+            self.nat_add_static_mapping(pg0.remote_ip4, self.nat_addr,
+                                        port_in, port_out,
+                                        proto=IP_PROTOS.tcp,
+                                        flags=flags)
+        else:
+            locals = [{'addr': server1.ip4,
+                       'port': port_in1,
+                       'probability': 50,
+                       'vrf_id': 0},
+                      {'addr': server2.ip4,
+                       'port': port_in2,
+                       'probability': 50,
+                       'vrf_id': 0}]
+            out_addr = self.nat_addr
+
+            self.vapi.nat44_add_del_lb_static_mapping(is_add=1, flags=flags,
+                                                      external_addr=out_addr,
+                                                      external_port=port_out,
+                                                      protocol=IP_PROTOS.tcp,
+                                                      local_num=len(locals),
+                                                      locals=locals)
+        self.nat_add_inside_interface(pg0)
+        self.nat_add_outside_interface(pg1)
+
+        if same_pg:
+            if not lb:
+                client = server
+            else:
+                assert client_id is not None
+                if client_id == 1:
+                    client = self.pg0.remote_hosts[0]
+                elif client_id == 2:
+                    client = self.pg0.remote_hosts[1]
+        else:
+            client = pg1.remote_hosts[0]
+        p = (Ether(src=pg1.remote_mac, dst=pg1.local_mac) /
+             IP(src=client.ip4, dst=self.nat_addr) /
+             TCP(sport=eh_port_out, dport=port_out))
+        pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            if lb:
+                if ip.dst == server1.ip4:
+                    server = server1
+                    port_in = port_in1
+                else:
+                    server = server2
+                    port_in = port_in2
+            self.assertEqual(ip.dst, server.ip4)
+            if lb and same_pg:
+                self.assertIn(tcp.dport, [port_in1, port_in2])
+            else:
+                self.assertEqual(tcp.dport, port_in)
+            if eh_translate:
+                self.assertEqual(ip.src, twice_nat_addr)
+                self.assertNotEqual(tcp.sport, eh_port_out)
+            else:
+                self.assertEqual(ip.src, client.ip4)
+                self.assertEqual(tcp.sport, eh_port_out)
+            eh_addr_in = ip.src
+            eh_port_in = tcp.sport
+            saved_port_in = tcp.dport
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        p = (Ether(src=server.mac, dst=pg0.local_mac) /
+             IP(src=server.ip4, dst=eh_addr_in) /
+             TCP(sport=saved_port_in, dport=eh_port_in))
+        pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, client.ip4)
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.dport, eh_port_out)
+            self.assertEqual(tcp.sport, port_out)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        if eh_translate:
+            sessions = self.vapi.nat44_user_session_dump(server.ip4, 0)
+            self.assertEqual(len(sessions), 1)
+            self.assertTrue(sessions[0].flags &
+                            self.config_flags.NAT_IS_EXT_HOST_VALID)
+            self.assertTrue(sessions[0].flags &
+                            self.config_flags.NAT_IS_TWICE_NAT)
+            self.logger.info(self.vapi.cli("show nat44 sessions"))
+            self.vapi.nat44_del_session(
+                address=sessions[0].inside_ip_address,
+                port=sessions[0].inside_port,
+                protocol=sessions[0].protocol,
+                flags=(self.config_flags.NAT_IS_INSIDE |
+                       self.config_flags.NAT_IS_EXT_HOST_VALID),
+                ext_host_address=sessions[0].ext_host_nat_address,
+                ext_host_port=sessions[0].ext_host_nat_port)
+            sessions = self.vapi.nat44_user_session_dump(server.ip4, 0)
+            self.assertEqual(len(sessions), 0)
+
+    def verify_syslog_sess(self, data, is_add=True, is_ip6=False):
+        message = data.decode('utf-8')
+        try:
+            message = SyslogMessage.parse(message)
+        except ParseError as e:
+            self.logger.error(e)
+            raise
+        else:
+            self.assertEqual(message.severity, SyslogSeverity.info)
+            self.assertEqual(message.appname, 'NAT')
+            self.assertEqual(message.msgid, 'SADD' if is_add else 'SDEL')
+            sd_params = message.sd.get('nsess')
+            self.assertTrue(sd_params is not None)
+            if is_ip6:
+                self.assertEqual(sd_params.get('IATYP'), 'IPv6')
+                self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip6)
+            else:
+                self.assertEqual(sd_params.get('IATYP'), 'IPv4')
+                self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip4)
+                self.assertTrue(sd_params.get('SSUBIX') is not None)
+            self.assertEqual(sd_params.get('ISPORT'), "%d" % self.tcp_port_in)
+            self.assertEqual(sd_params.get('XATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('XSADDR'), self.nat_addr)
+            self.assertEqual(sd_params.get('XSPORT'), "%d" % self.tcp_port_out)
+            self.assertEqual(sd_params.get('PROTO'), "%d" % IP_PROTOS.tcp)
+            self.assertEqual(sd_params.get('SVLAN'), '0')
+            self.assertEqual(sd_params.get('XDADDR'), self.pg1.remote_ip4)
+            self.assertEqual(sd_params.get('XDPORT'),
+                             "%d" % self.tcp_external_port)
+
+
+class TestNAT44ED(NAT44EDTestCase):
+    """ NAT44ED Test Case """
+
+    def test_users_dump(self):
+        """ NAT44ED API test - nat44_user_dump """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+
+        local_ip = self.pg0.remote_ip4
+        external_ip = self.nat_addr
+        self.nat_add_static_mapping(local_ip, external_ip)
+
+        users = self.vapi.nat44_user_dump()
+        self.assertEqual(len(users), 0)
+
+        # in2out - static mapping match
+
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, same_port=True)
+
+        users = self.vapi.nat44_user_dump()
+        self.assertEqual(len(users), 1)
+        static_user = users[0]
+        self.assertEqual(static_user.nstaticsessions, 3)
+        self.assertEqual(static_user.nsessions, 0)
+
+        # in2out - no static mapping match (forwarding test)
+
+        host0 = self.pg0.remote_hosts[0]
+        self.pg0.remote_hosts[0] = self.pg0.remote_hosts[1]
+        try:
+            pkts = self.create_stream_out(self.pg1,
+                                          dst_ip=self.pg0.remote_ip4,
+                                          use_inside_ports=True)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+            pkts = self.create_stream_in(self.pg0, self.pg1)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out(capture, nat_ip=self.pg0.remote_ip4,
+                                    same_port=True)
+        finally:
+            self.pg0.remote_hosts[0] = host0
+
+        users = self.vapi.nat44_user_dump()
+        self.assertEqual(len(users), 2)
+        if str(users[0].ip_address) == self.pg0.remote_hosts[0].ip4:
+            non_static_user = users[1]
+            static_user = users[0]
+        else:
+            non_static_user = users[0]
+            static_user = users[1]
+        self.assertEqual(static_user.nstaticsessions, 3)
+        self.assertEqual(static_user.nsessions, 0)
+        self.assertEqual(non_static_user.nstaticsessions, 0)
+        self.assertEqual(non_static_user.nsessions, 3)
+
+        users = self.vapi.nat44_user_dump()
+        self.assertEqual(len(users), 2)
+        if str(users[0].ip_address) == self.pg0.remote_hosts[0].ip4:
+            non_static_user = users[1]
+            static_user = users[0]
+        else:
+            non_static_user = users[0]
+            static_user = users[1]
+        self.assertEqual(static_user.nstaticsessions, 3)
+        self.assertEqual(static_user.nsessions, 0)
+        self.assertEqual(non_static_user.nstaticsessions, 0)
+        self.assertEqual(non_static_user.nsessions, 3)
+
+    def test_frag_out_of_order_do_not_translate(self):
+        """ NAT44ED don't translate fragments arriving out of order """
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.vapi.nat44_forwarding_enable_disable(enable=True)
+        self.frag_out_of_order(proto=IP_PROTOS.tcp, dont_translate=True)
+
+    def test_forwarding(self):
+        """ NAT44ED forwarding test """
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+
+        real_ip = self.pg0.remote_ip4
+        alias_ip = self.nat_addr
+        flags = self.config_flags.NAT_IS_ADDR_ONLY
+        self.vapi.nat44_add_del_static_mapping(is_add=1,
+                                               local_ip_address=real_ip,
+                                               external_ip_address=alias_ip,
+                                               external_sw_if_index=0xFFFFFFFF,
+                                               flags=flags)
+
+        try:
+            # in2out - static mapping match
+
+            pkts = self.create_stream_out(self.pg1)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+            pkts = self.create_stream_in(self.pg0, self.pg1)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out(capture, same_port=True)
+
+            # in2out - no static mapping match
+
+            host0 = self.pg0.remote_hosts[0]
+            self.pg0.remote_hosts[0] = self.pg0.remote_hosts[1]
+            try:
+                pkts = self.create_stream_out(self.pg1,
+                                              dst_ip=self.pg0.remote_ip4,
+                                              use_inside_ports=True)
+                self.pg1.add_stream(pkts)
+                self.pg_enable_capture(self.pg_interfaces)
+                self.pg_start()
+                capture = self.pg0.get_capture(len(pkts))
+                self.verify_capture_in(capture, self.pg0)
+
+                pkts = self.create_stream_in(self.pg0, self.pg1)
+                self.pg0.add_stream(pkts)
+                self.pg_enable_capture(self.pg_interfaces)
+                self.pg_start()
+                capture = self.pg1.get_capture(len(pkts))
+                self.verify_capture_out(capture, nat_ip=self.pg0.remote_ip4,
+                                        same_port=True)
+            finally:
+                self.pg0.remote_hosts[0] = host0
+
+            user = self.pg0.remote_hosts[1]
+            sessions = self.vapi.nat44_user_session_dump(user.ip4, 0)
+            self.assertEqual(len(sessions), 3)
+            self.assertTrue(sessions[0].flags &
+                            self.config_flags.NAT_IS_EXT_HOST_VALID)
+            self.vapi.nat44_del_session(
+                address=sessions[0].inside_ip_address,
+                port=sessions[0].inside_port,
+                protocol=sessions[0].protocol,
+                flags=(self.config_flags.NAT_IS_INSIDE |
+                       self.config_flags.NAT_IS_EXT_HOST_VALID),
+                ext_host_address=sessions[0].ext_host_address,
+                ext_host_port=sessions[0].ext_host_port)
+            sessions = self.vapi.nat44_user_session_dump(user.ip4, 0)
+            self.assertEqual(len(sessions), 2)
+
+        finally:
+            self.vapi.nat44_forwarding_enable_disable(enable=0)
+            flags = self.config_flags.NAT_IS_ADDR_ONLY
+            self.vapi.nat44_add_del_static_mapping(
+                is_add=0,
+                local_ip_address=real_ip,
+                external_ip_address=alias_ip,
+                external_sw_if_index=0xFFFFFFFF,
+                flags=flags)
+
+    def test_output_feature_and_service2(self):
+        """ NAT44ED interface output feature and service host direct access """
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr)
+
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index, is_add=1,)
+
+        # session initiated from service host - translate
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # session initiated from remote host - do not translate
+        tcp_port_in = self.tcp_port_in
+        udp_port_in = self.udp_port_in
+        icmp_id_in = self.icmp_id_in
+
+        self.tcp_port_in = 60303
+        self.udp_port_in = 60304
+        self.icmp_id_in = 60305
+
+        try:
+            pkts = self.create_stream_out(self.pg1,
+                                          self.pg0.remote_ip4,
+                                          use_inside_ports=True)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+            pkts = self.create_stream_in(self.pg0, self.pg1)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out(capture, nat_ip=self.pg0.remote_ip4,
+                                    same_port=True)
+        finally:
+            self.tcp_port_in = tcp_port_in
+            self.udp_port_in = udp_port_in
+            self.icmp_id_in = icmp_id_in
+
+    def test_twice_nat(self):
+        """ NAT44ED Twice NAT """
+        self.twice_nat_common()
+
+    def test_self_twice_nat_positive(self):
+        """ NAT44ED Self Twice NAT (positive test) """
+        self.twice_nat_common(self_twice_nat=True, same_pg=True)
+
+    def test_self_twice_nat_lb_positive(self):
+        """ NAT44ED Self Twice NAT local service load balancing (positive test)
+        """
+        self.twice_nat_common(lb=True, self_twice_nat=True, same_pg=True,
+                              client_id=1)
+
+    def test_twice_nat_lb(self):
+        """ NAT44ED Twice NAT local service load balancing """
+        self.twice_nat_common(lb=True)
+
+    def test_output_feature(self):
+        """ NAT44ED interface output feature (in2out postrouting) """
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr)
+
+        self.nat_add_outside_interface(self.pg0)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index, is_add=1)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+    def test_static_with_port_out2(self):
+        """ NAT44ED 1:1 NAPT asymmetrical rule """
+
+        external_port = 80
+        local_port = 8080
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        flags = self.config_flags.NAT_IS_OUT2IN_ONLY
+        self.nat_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                    local_port, external_port,
+                                    proto=IP_PROTOS.tcp, flags=flags)
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # from client to service
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # ICMP error
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             ICMP(type=11) / capture[0][IP])
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            self.assertEqual(p[IP].src, self.nat_addr)
+            inner = p[IPerror]
+            self.assertEqual(inner.dst, self.nat_addr)
+            self.assertEqual(inner[TCPerror].dport, external_port)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # ICMP error
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             ICMP(type=11) / capture[0][IP])
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            self.assertEqual(p[IP].dst, self.pg0.remote_ip4)
+            inner = p[IPerror]
+            self.assertEqual(inner.src, self.pg0.remote_ip4)
+            self.assertEqual(inner[TCPerror].sport, local_port)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client to server (no translation)
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+             TCP(sport=12346, dport=local_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client (no translation)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12346))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg0.remote_ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_static_lb(self):
+        """ NAT44ED local service load balancing """
+        external_addr_n = self.nat_addr
+        external_port = 80
+        local_port = 8080
+        server1 = self.pg0.remote_hosts[0]
+        server2 = self.pg0.remote_hosts[1]
+
+        locals = [{'addr': server1.ip4,
+                   'port': local_port,
+                   'probability': 70,
+                   'vrf_id': 0},
+                  {'addr': server2.ip4,
+                   'port': local_port,
+                   'probability': 30,
+                   'vrf_id': 0}]
+
+        self.nat_add_address(self.nat_addr)
+        self.vapi.nat44_add_del_lb_static_mapping(
+            is_add=1,
+            external_addr=external_addr_n,
+            external_port=external_port,
+            protocol=IP_PROTOS.tcp,
+            local_num=len(locals),
+            locals=locals)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # from client to service
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        server = None
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertIn(ip.dst, [server1.ip4, server2.ip4])
+            if ip.dst == server1.ip4:
+                server = server1
+            else:
+                server = server2
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        sessions = self.vapi.nat44_user_session_dump(server.ip4, 0)
+        self.assertEqual(len(sessions), 1)
+        self.assertTrue(sessions[0].flags &
+                        self.config_flags.NAT_IS_EXT_HOST_VALID)
+        self.vapi.nat44_del_session(
+            address=sessions[0].inside_ip_address,
+            port=sessions[0].inside_port,
+            protocol=sessions[0].protocol,
+            flags=(self.config_flags.NAT_IS_INSIDE |
+                   self.config_flags.NAT_IS_EXT_HOST_VALID),
+            ext_host_address=sessions[0].ext_host_address,
+            ext_host_port=sessions[0].ext_host_port)
+        sessions = self.vapi.nat44_user_session_dump(server.ip4, 0)
+        self.assertEqual(len(sessions), 0)
+
+    def test_static_lb_2(self):
+        """ NAT44ED local service load balancing (asymmetrical rule) """
+        external_addr = self.nat_addr
+        external_port = 80
+        local_port = 8080
+        server1 = self.pg0.remote_hosts[0]
+        server2 = self.pg0.remote_hosts[1]
+
+        locals = [{'addr': server1.ip4,
+                   'port': local_port,
+                   'probability': 70,
+                   'vrf_id': 0},
+                  {'addr': server2.ip4,
+                   'port': local_port,
+                   'probability': 30,
+                   'vrf_id': 0}]
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        flags = self.config_flags.NAT_IS_OUT2IN_ONLY
+        self.vapi.nat44_add_del_lb_static_mapping(is_add=1, flags=flags,
+                                                  external_addr=external_addr,
+                                                  external_port=external_port,
+                                                  protocol=IP_PROTOS.tcp,
+                                                  local_num=len(locals),
+                                                  locals=locals)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # from client to service
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        server = None
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertIn(ip.dst, [server1.ip4, server2.ip4])
+            if ip.dst == server1.ip4:
+                server = server1
+            else:
+                server = server2
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client to server (no translation)
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=server1.ip4) /
+             TCP(sport=12346, dport=local_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        server = None
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, server1.ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client (no translation)
+        p = (Ether(src=server1.mac, dst=self.pg0.local_mac) /
+             IP(src=server1.ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12346))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, server1.ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_lb_affinity(self):
+        """ NAT44ED local service load balancing affinity """
+        external_addr = self.nat_addr
+        external_port = 80
+        local_port = 8080
+        server1 = self.pg0.remote_hosts[0]
+        server2 = self.pg0.remote_hosts[1]
+
+        locals = [{'addr': server1.ip4,
+                   'port': local_port,
+                   'probability': 50,
+                   'vrf_id': 0},
+                  {'addr': server2.ip4,
+                   'port': local_port,
+                   'probability': 50,
+                   'vrf_id': 0}]
+
+        self.nat_add_address(self.nat_addr)
+        self.vapi.nat44_add_del_lb_static_mapping(is_add=1,
+                                                  external_addr=external_addr,
+                                                  external_port=external_port,
+                                                  protocol=IP_PROTOS.tcp,
+                                                  affinity=10800,
+                                                  local_num=len(locals),
+                                                  locals=locals)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=1025, dport=external_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        backend = capture[0][IP].dst
+
+        sessions = self.vapi.nat44_user_session_dump(backend, 0)
+        self.assertEqual(len(sessions), 1)
+        self.assertTrue(sessions[0].flags &
+                        self.config_flags.NAT_IS_EXT_HOST_VALID)
+        self.vapi.nat44_del_session(
+            address=sessions[0].inside_ip_address,
+            port=sessions[0].inside_port,
+            protocol=sessions[0].protocol,
+            flags=(self.config_flags.NAT_IS_INSIDE |
+                   self.config_flags.NAT_IS_EXT_HOST_VALID),
+            ext_host_address=sessions[0].ext_host_address,
+            ext_host_port=sessions[0].ext_host_port)
+
+        pkts = []
+        for port in range(1030, 1100):
+            p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(sport=port, dport=external_port))
+            pkts.append(p)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for p in capture:
+            self.assertEqual(p[IP].dst, backend)
+
+    def test_multiple_vrf(self):
+        """ NAT44ED Multiple VRF setup """
+
+        external_addr = '1.2.3.4'
+        external_port = 80
+        local_port = 8080
+        port = 0
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1, flags=flags)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg5.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg5.sw_if_index,
+            is_add=1, flags=flags)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg6.sw_if_index,
+            is_add=1)
+        flags = self.config_flags.NAT_IS_OUT2IN_ONLY
+        self.nat_add_static_mapping(self.pg5.remote_ip4, external_addr,
+                                    local_port, external_port, vrf_id=1,
+                                    proto=IP_PROTOS.tcp, flags=flags)
+        self.nat_add_static_mapping(
+            self.pg0.remote_ip4,
+            external_sw_if_index=self.pg0.sw_if_index,
+            local_port=local_port,
+            vrf_id=0,
+            external_port=external_port,
+            proto=IP_PROTOS.tcp,
+            flags=flags
+        )
+
+        # from client to service (both VRF1)
+        p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+             IP(src=self.pg6.remote_ip4, dst=external_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg6.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg5.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client (both VRF1)
+        p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+             IP(src=self.pg5.remote_ip4, dst=self.pg6.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg5.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, external_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # dynamic NAT from VRF1 to VRF0 (output-feature)
+        p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+             IP(src=self.pg5.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=2345, dport=22))
+        self.pg5.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assert_packet_checksums_valid(p)
+            port = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=22, dport=port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg5.remote_ip4)
+            self.assertEqual(tcp.dport, 2345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client VRF1 to service VRF0
+        p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+             IP(src=self.pg6.remote_ip4, dst=self.pg0.local_ip4) /
+             TCP(sport=12346, dport=external_port))
+        self.pg6.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service VRF0 back to client VRF1
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+             TCP(sport=local_port, dport=12346))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg0.local_ip4)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client VRF0 to service VRF1
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=external_addr) /
+             TCP(sport=12347, dport=external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg5.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service VRF1 back to client VRF0
+        p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+             IP(src=self.pg5.remote_ip4, dst=self.pg0.remote_ip4) /
+             TCP(sport=local_port, dport=12347))
+        self.pg5.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, external_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client to server (both VRF1, no translation)
+        p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+             IP(src=self.pg6.remote_ip4, dst=self.pg5.remote_ip4) /
+             TCP(sport=12348, dport=local_port))
+        self.pg6.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg5.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from server back to client (both VRF1, no translation)
+        p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+             IP(src=self.pg5.remote_ip4, dst=self.pg6.remote_ip4) /
+             TCP(sport=local_port, dport=12348))
+        self.pg5.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg5.remote_ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client VRF1 to server VRF0 (no translation)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+             TCP(sport=local_port, dport=12349))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg0.remote_ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from server VRF0 back to client VRF1 (no translation)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+             TCP(sport=local_port, dport=12349))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg0.remote_ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from client VRF0 to server VRF1 (no translation)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg5.remote_ip4) /
+             TCP(sport=12344, dport=local_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg5.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from server VRF1 back to client VRF0 (no translation)
+        p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+             IP(src=self.pg5.remote_ip4, dst=self.pg0.remote_ip4) /
+             TCP(sport=local_port, dport=12344))
+        self.pg5.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg5.remote_ip4)
+            self.assertEqual(tcp.sport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_outside_address_distribution(self):
+        """ Outside address distribution based on source address """
+
+        x = 100
+        nat_addresses = []
+
+        for i in range(1, x):
+            a = "10.0.0.%d" % i
+            nat_addresses.append(a)
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.vapi.nat44_add_del_address_range(
+            first_ip_address=nat_addresses[0],
+            last_ip_address=nat_addresses[-1],
+            vrf_id=0xFFFFFFFF, is_add=1, flags=0)
+
+        self.pg0.generate_remote_hosts(x)
+
+        pkts = []
+        for i in range(x):
+            info = self.create_packet_info(self.pg0, self.pg1)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_hosts[i].ip4,
+                     dst=self.pg1.remote_ip4) /
+                 UDP(sport=7000+i, dport=8000+i) /
+                 Raw(payload))
+            info.data = p
+            pkts.append(p)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        recvd = self.pg1.get_capture(len(pkts))
+        for p_recvd in recvd:
+            payload_info = self.payload_to_info(p_recvd[Raw])
+            packet_index = payload_info.index
+            info = self._packet_infos[packet_index]
+            self.assertTrue(info is not None)
+            self.assertEqual(packet_index, info.index)
+            p_sent = info.data
+            packed = socket.inet_aton(p_sent[IP].src)
+            numeric = struct.unpack("!L", packed)[0]
+            numeric = socket.htonl(numeric)
+            a = nat_addresses[(numeric-1) % len(nat_addresses)]
+            self.assertEqual(
+                a, p_recvd[IP].src,
+                "Invalid packet (src IP %s translated to %s, but expected %s)"
+                % (p_sent[IP].src, p_recvd[IP].src, a))
+
+
+class TestNAT44EDMW(TestNAT44ED):
+    """ NAT44ED MW Test Case """
+    vpp_worker_count = 4
+    max_sessions = 5000
+
+    @unittest.skip('MW fix required')
+    def test_users_dump(self):
+        """ NAT44ED API test - nat44_user_dump """
+
+    @unittest.skip('MW fix required')
+    def test_frag_out_of_order_do_not_translate(self):
+        """ NAT44ED don't translate fragments arriving out of order """
+
+    @unittest.skip('MW fix required')
+    def test_forwarding(self):
+        """ NAT44ED forwarding test """
+
+    @unittest.skip('MW fix required')
+    def test_twice_nat(self):
+        """ NAT44ED Twice NAT """
+
+    @unittest.skip('MW fix required')
+    def test_twice_nat_lb(self):
+        """ NAT44ED Twice NAT local service load balancing """
+
+    @unittest.skip('MW fix required')
+    def test_output_feature(self):
+        """ NAT44ED interface output feature (in2out postrouting) """
+
+    @unittest.skip('MW fix required')
+    def test_static_with_port_out2(self):
+        """ NAT44ED 1:1 NAPT asymmetrical rule """
+
+    @unittest.skip('MW fix required')
+    def test_output_feature_and_service2(self):
+        """ NAT44ED interface output feature and service host direct access """
+
+    @unittest.skip('MW fix required')
+    def test_static_lb(self):
+        """ NAT44ED local service load balancing """
+
+    @unittest.skip('MW fix required')
+    def test_static_lb_2(self):
+        """ NAT44ED local service load balancing (asymmetrical rule) """
+
+    @unittest.skip('MW fix required')
+    def test_lb_affinity(self):
+        """ NAT44ED local service load balancing affinity """
+
+    @unittest.skip('MW fix required')
+    def test_multiple_vrf(self):
+        """ NAT44ED Multiple VRF setup """
+
+    @unittest.skip('MW fix required')
+    def test_self_twice_nat_positive(self):
+        """ NAT44ED Self Twice NAT (positive test) """
+
+    @unittest.skip('MW fix required')
+    def test_self_twice_nat_lb_positive(self):
+        """ NAT44ED Self Twice NAT local service load balancing (positive test)
+        """
+
+    def test_dynamic(self):
+        """ NAT44ED dynamic translation test """
+        pkt_count = 1500
+        tcp_port_offset = 20
+        udp_port_offset = 20
+        icmp_id_offset = 20
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # in2out
+        tc1 = self.statistics['/nat44-ed/in2out/slowpath/tcp']
+        uc1 = self.statistics['/nat44-ed/in2out/slowpath/udp']
+        ic1 = self.statistics['/nat44-ed/in2out/slowpath/icmp']
+        dc1 = self.statistics['/nat44-ed/in2out/slowpath/drops']
+
+        i2o_pkts = [[] for x in range(0, self.vpp_worker_count)]
+
+        for i in range(pkt_count):
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=tcp_port_offset + i, dport=20))
+            i2o_pkts[p[TCP].sport % self.vpp_worker_count].append(p)
+
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 UDP(sport=udp_port_offset + i, dport=20))
+            i2o_pkts[p[UDP].sport % self.vpp_worker_count].append(p)
+
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 ICMP(id=icmp_id_offset + i, type='echo-request'))
+            i2o_pkts[p[ICMP].id % self.vpp_worker_count].append(p)
+
+        for i in range(0, self.vpp_worker_count):
+            if len(i2o_pkts[i]) > 0:
+                self.pg0.add_stream(i2o_pkts[i], worker=i)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(pkt_count * 3)
+
+        if_idx = self.pg0.sw_if_index
+        tc2 = self.statistics['/nat44-ed/in2out/slowpath/tcp']
+        uc2 = self.statistics['/nat44-ed/in2out/slowpath/udp']
+        ic2 = self.statistics['/nat44-ed/in2out/slowpath/icmp']
+        dc2 = self.statistics['/nat44-ed/in2out/slowpath/drops']
+
+        self.assertEqual(
+            tc2[:, if_idx].sum() - tc1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(
+            uc2[:, if_idx].sum() - uc1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(
+            ic2[:, if_idx].sum() - ic1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(dc2[:, if_idx].sum() - dc1[:, if_idx].sum(), 0)
+
+        self.logger.info(self.vapi.cli("show trace"))
+
+        # out2in
+        tc1 = self.statistics['/nat44-ed/out2in/fastpath/tcp']
+        uc1 = self.statistics['/nat44-ed/out2in/fastpath/udp']
+        ic1 = self.statistics['/nat44-ed/out2in/fastpath/icmp']
+        dc1 = self.statistics['/nat44-ed/out2in/fastpath/drops']
+
+        recvd_tcp_ports = set()
+        recvd_udp_ports = set()
+        recvd_icmp_ids = set()
+
+        for p in capture:
+            if TCP in p:
+                recvd_tcp_ports.add(p[TCP].sport)
+            if UDP in p:
+                recvd_udp_ports.add(p[UDP].sport)
+            if ICMP in p:
+                recvd_icmp_ids.add(p[ICMP].id)
+
+        recvd_tcp_ports = list(recvd_tcp_ports)
+        recvd_udp_ports = list(recvd_udp_ports)
+        recvd_icmp_ids = list(recvd_icmp_ids)
+
+        o2i_pkts = [[] for x in range(0, self.vpp_worker_count)]
+        for i in range(pkt_count):
+            p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 TCP(dport=choice(recvd_tcp_ports), sport=20))
+            o2i_pkts[p[TCP].dport % self.vpp_worker_count].append(p)
+
+            p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 UDP(dport=choice(recvd_udp_ports), sport=20))
+            o2i_pkts[p[UDP].dport % self.vpp_worker_count].append(p)
+
+            p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                 ICMP(id=choice(recvd_icmp_ids), type='echo-reply'))
+            o2i_pkts[p[ICMP].id % self.vpp_worker_count].append(p)
+
+        for i in range(0, self.vpp_worker_count):
+            if len(o2i_pkts[i]) > 0:
+                self.pg1.add_stream(o2i_pkts[i], worker=i)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(pkt_count * 3)
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP].dst, self.pg0.remote_ip4)
+                if packet.haslayer(TCP):
+                    self.assert_in_range(
+                        packet[TCP].dport, tcp_port_offset,
+                        tcp_port_offset + pkt_count, "dst TCP port")
+                elif packet.haslayer(UDP):
+                    self.assert_in_range(
+                        packet[UDP].dport, udp_port_offset,
+                        udp_port_offset + pkt_count, "dst UDP port")
+                else:
+                    self.assert_in_range(
+                        packet[ICMP].id, icmp_id_offset,
+                        icmp_id_offset + pkt_count, "ICMP id")
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+        if_idx = self.pg1.sw_if_index
+        tc2 = self.statistics['/nat44-ed/out2in/fastpath/tcp']
+        uc2 = self.statistics['/nat44-ed/out2in/fastpath/udp']
+        ic2 = self.statistics['/nat44-ed/out2in/fastpath/icmp']
+        dc2 = self.statistics['/nat44-ed/out2in/fastpath/drops']
+
+        self.assertEqual(
+            tc2[:, if_idx].sum() - tc1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(
+            uc2[:, if_idx].sum() - uc1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(
+            ic2[:, if_idx].sum() - ic1[:, if_idx].sum(), pkt_count)
+        self.assertEqual(dc2[:, if_idx].sum() - dc1[:, if_idx].sum(), 0)
+
+        sc = self.statistics['/nat44-ed/total-sessions']
+        self.assertEqual(sc[:, 0].sum(), len(recvd_tcp_ports) +
+                         len(recvd_udp_ports) + len(recvd_icmp_ids))
+
+    def test_frag_in_order(self):
+        """ NAT44ED translate fragments arriving in order """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.frag_in_order(proto=IP_PROTOS.tcp, ignore_port=True)
+        self.frag_in_order(proto=IP_PROTOS.udp, ignore_port=True)
+        self.frag_in_order(proto=IP_PROTOS.icmp, ignore_port=True)
+
+    def test_frag_in_order_do_not_translate(self):
+        """ NAT44ED don't translate fragments arriving in order """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.vapi.nat44_forwarding_enable_disable(enable=True)
+
+        self.frag_in_order(proto=IP_PROTOS.tcp, dont_translate=True)
+
+    def test_frag_out_of_order(self):
+        """ NAT44ED translate fragments arriving out of order """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.frag_out_of_order(proto=IP_PROTOS.tcp, ignore_port=True)
+        self.frag_out_of_order(proto=IP_PROTOS.udp, ignore_port=True)
+        self.frag_out_of_order(proto=IP_PROTOS.icmp, ignore_port=True)
+
+    def test_frag_in_order_in_plus_out(self):
+        """ NAT44ED in+out interface fragments in order """
+
+        in_port = self.random_port()
+        out_port = self.random_port()
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg0)
+        self.nat_add_inside_interface(self.pg1)
+        self.nat_add_outside_interface(self.pg1)
+
+        # add static mappings for server
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    in_port,
+                                    out_port,
+                                    proto=IP_PROTOS.tcp)
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    in_port,
+                                    out_port,
+                                    proto=IP_PROTOS.udp)
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    proto=IP_PROTOS.icmp)
+
+        # run tests for each protocol
+        self.frag_in_order_in_plus_out(self.server_addr,
+                                       self.nat_addr,
+                                       in_port,
+                                       out_port,
+                                       IP_PROTOS.tcp)
+        self.frag_in_order_in_plus_out(self.server_addr,
+                                       self.nat_addr,
+                                       in_port,
+                                       out_port,
+                                       IP_PROTOS.udp)
+        self.frag_in_order_in_plus_out(self.server_addr,
+                                       self.nat_addr,
+                                       in_port,
+                                       out_port,
+                                       IP_PROTOS.icmp)
+
+    def test_frag_out_of_order_in_plus_out(self):
+        """ NAT44ED in+out interface fragments out of order """
+
+        in_port = self.random_port()
+        out_port = self.random_port()
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg0)
+        self.nat_add_inside_interface(self.pg1)
+        self.nat_add_outside_interface(self.pg1)
+
+        # add static mappings for server
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    in_port,
+                                    out_port,
+                                    proto=IP_PROTOS.tcp)
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    in_port,
+                                    out_port,
+                                    proto=IP_PROTOS.udp)
+        self.nat_add_static_mapping(self.server_addr,
+                                    self.nat_addr,
+                                    proto=IP_PROTOS.icmp)
+
+        # run tests for each protocol
+        self.frag_out_of_order_in_plus_out(self.server_addr,
+                                           self.nat_addr,
+                                           in_port,
+                                           out_port,
+                                           IP_PROTOS.tcp)
+        self.frag_out_of_order_in_plus_out(self.server_addr,
+                                           self.nat_addr,
+                                           in_port,
+                                           out_port,
+                                           IP_PROTOS.udp)
+        self.frag_out_of_order_in_plus_out(self.server_addr,
+                                           self.nat_addr,
+                                           in_port,
+                                           out_port,
+                                           IP_PROTOS.icmp)
+
+    def test_reass_hairpinning(self):
+        """ NAT44ED fragments hairpinning """
+
+        server_addr = self.pg0.remote_hosts[1].ip4
+
+        host_in_port = self.random_port()
+        server_in_port = self.random_port()
+        server_out_port = self.random_port()
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # add static mapping for server
+        self.nat_add_static_mapping(server_addr, self.nat_addr,
+                                    server_in_port, server_out_port,
+                                    proto=IP_PROTOS.tcp)
+        self.nat_add_static_mapping(server_addr, self.nat_addr,
+                                    server_in_port, server_out_port,
+                                    proto=IP_PROTOS.udp)
+        self.nat_add_static_mapping(server_addr, self.nat_addr)
+
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.tcp,
+                               ignore_port=True)
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.udp,
+                               ignore_port=True)
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.icmp,
+                               ignore_port=True)
+
+    def test_session_limit_per_vrf(self):
+        """ NAT44ED per vrf session limit """
+
+        inside = self.pg0
+        inside_vrf10 = self.pg2
+        outside = self.pg1
+
+        limit = 5
+
+        # 2 interfaces pg0, pg1 (vrf10, limit 1 tcp session)
+        # non existing vrf_id makes process core dump
+        self.vapi.nat44_set_session_limit(session_limit=limit, vrf_id=10)
+
+        self.nat_add_inside_interface(inside)
+        self.nat_add_inside_interface(inside_vrf10)
+        self.nat_add_outside_interface(outside)
+
+        # vrf independent
+        self.nat_add_interface_address(outside)
+
+        # BUG: causing core dump - when bad vrf_id is specified
+        # self.nat_add_address(outside.local_ip4, vrf_id=20)
+
+        stream = self.create_tcp_stream(inside_vrf10, outside, limit * 2)
+        inside_vrf10.add_stream(stream)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        capture = outside.get_capture(limit)
+
+        stream = self.create_tcp_stream(inside, outside, limit * 2)
+        inside.add_stream(stream)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        capture = outside.get_capture(len(stream))
+
+    def test_show_max_translations(self):
+        """ NAT44ED API test - max translations per thread """
+        nat_config = self.vapi.nat_show_config_2()
+        self.assertEqual(self.max_sessions,
+                         nat_config.max_translations_per_thread)
+
+    def test_lru_cleanup(self):
+        """ NAT44ED LRU cleanup algorithm """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.vapi.nat_set_timeouts(
+            udp=1, tcp_established=7440, tcp_transitory=30, icmp=1)
+
+        tcp_port_out = self.init_tcp_session(self.pg0, self.pg1, 2000, 80)
+        pkts = []
+        for i in range(0, self.max_sessions - 1):
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) /
+                 UDP(sport=7000+i, dport=80))
+            pkts.append(p)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(len(pkts))
+        self.sleep(1.5, "wait for timeouts")
+
+        pkts = []
+        for i in range(0, self.max_sessions - 1):
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) /
+                 ICMP(id=8000+i, type='echo-request'))
+            pkts.append(p)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(len(pkts))
+
+    def test_session_rst_timeout(self):
+        """ NAT44ED session RST timeouts """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+                                   tcp_transitory=5, icmp=60)
+
+        self.init_tcp_session(self.pg0, self.pg1, self.tcp_port_in,
+                              self.tcp_external_port)
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                 flags="R"))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        self.sleep(6)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in + 1, dport=self.tcp_external_port + 1,
+                 flags="S"))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+    def test_dynamic_out_of_ports(self):
+        """ NAT44ED dynamic translation test: out of ports """
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # in2out and no NAT addresses added
+        err_old = self.statistics.get_err_counter(
+            '/err/nat44-ed-in2out-slowpath/out of ports')
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(0, timeout=1)
+
+        err_new = self.statistics.get_err_counter(
+            '/err/nat44-ed-in2out-slowpath/out of ports')
+
+        self.assertEqual(err_new - err_old, len(pkts))
+
+        # in2out after NAT addresses added
+        self.nat_add_address(self.nat_addr)
+
+        err_old = self.statistics.get_err_counter(
+            '/err/nat44-ed-in2out-slowpath/out of ports')
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        err_new = self.statistics.get_err_counter(
+            '/err/nat44-ed-in2out-slowpath/out of ports')
+
+        self.assertEqual(err_new, err_old)
+
+    def test_unknown_proto(self):
+        """ NAT44ED translate packet with unknown protocol """
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # in2out
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, self.nat_addr)
+            self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # out2in
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, self.pg1.remote_ip4)
+            self.assertEqual(packet[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_hairpinning_unknown_proto(self):
+        """ NAT44ED translate packet with unknown protocol - hairpinning """
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        host_in_port = 1234
+        server_out_port = 8765
+        server_nat_ip = "10.0.0.11"
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        # add static mapping for server
+        self.nat_add_static_mapping(server.ip4, server_nat_ip)
+
+        # host to server
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=server_nat_ip) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=host.mac) /
+             IP(src=host.ip4, dst=server_nat_ip) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, self.nat_addr)
+            self.assertEqual(packet[IP].dst, server.ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # server to host
+        p = (Ether(dst=self.pg0.local_mac, src=server.mac) /
+             IP(src=server.ip4, dst=self.nat_addr) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, server_nat_ip)
+            self.assertEqual(packet[IP].dst, host.ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_output_feature_and_service(self):
+        """ NAT44ED interface output feature and services """
+        external_addr = '1.2.3.4'
+        external_port = 80
+        local_port = 8080
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr)
+        flags = self.config_flags.NAT_IS_ADDR_ONLY
+        self.vapi.nat44_add_del_identity_mapping(
+            ip_address=self.pg1.remote_ip4, sw_if_index=0xFFFFFFFF,
+            flags=flags, is_add=1)
+        flags = self.config_flags.NAT_IS_OUT2IN_ONLY
+        self.nat_add_static_mapping(self.pg0.remote_ip4, external_addr,
+                                    local_port, external_port,
+                                    proto=IP_PROTOS.tcp, flags=flags)
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg0)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index, is_add=1)
+
+        # from client to service
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=external_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, external_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from local network host to external network
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, ignore_port=True)
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        # from external network back to local network host
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+    def test_output_feature_and_service3(self):
+        """ NAT44ED interface output feature and DST NAT """
+        external_addr = '1.2.3.4'
+        external_port = 80
+        local_port = 8080
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr)
+        flags = self.config_flags.NAT_IS_OUT2IN_ONLY
+        self.nat_add_static_mapping(self.pg1.remote_ip4, external_addr,
+                                    local_port, external_port,
+                                    proto=IP_PROTOS.tcp, flags=flags)
+
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg0)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index, is_add=1)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=external_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg0.remote_ip4)
+            self.assertEqual(tcp.sport, 12345)
+            self.assertEqual(ip.dst, self.pg1.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+             TCP(sport=local_port, dport=12345))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, external_addr)
+            self.assertEqual(tcp.sport, external_port)
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.dport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_self_twice_nat_lb_negative(self):
+        """ NAT44ED Self Twice NAT local service load balancing (negative test)
+        """
+        self.twice_nat_common(lb=True, self_twice_nat=True, same_pg=True,
+                              client_id=2)
+
+    def test_self_twice_nat_negative(self):
+        """ NAT44ED Self Twice NAT (negative test) """
+        self.twice_nat_common(self_twice_nat=True)
+
+    def test_static_lb_multi_clients(self):
+        """ NAT44ED local service load balancing - multiple clients"""
+
+        external_addr = self.nat_addr
+        external_port = 80
+        local_port = 8080
+        server1 = self.pg0.remote_hosts[0]
+        server2 = self.pg0.remote_hosts[1]
+        server3 = self.pg0.remote_hosts[2]
+
+        locals = [{'addr': server1.ip4,
+                   'port': local_port,
+                   'probability': 90,
+                   'vrf_id': 0},
+                  {'addr': server2.ip4,
+                   'port': local_port,
+                   'probability': 10,
+                   'vrf_id': 0}]
+
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        self.nat_add_address(self.nat_addr)
+        self.vapi.nat44_add_del_lb_static_mapping(is_add=1,
+                                                  external_addr=external_addr,
+                                                  external_port=external_port,
+                                                  protocol=IP_PROTOS.tcp,
+                                                  local_num=len(locals),
+                                                  locals=locals)
+
+        server1_n = 0
+        server2_n = 0
+        clients = ip4_range(self.pg1.remote_ip4, 10, 50)
+        pkts = []
+        for client in clients:
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=client, dst=self.nat_addr) /
+                 TCP(sport=12345, dport=external_port))
+            pkts.append(p)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for p in capture:
+            if p[IP].dst == server1.ip4:
+                server1_n += 1
+            else:
+                server2_n += 1
+        self.assertGreaterEqual(server1_n, server2_n)
+
+        local = {
+            'addr': server3.ip4,
+            'port': local_port,
+            'probability': 20,
+            'vrf_id': 0
+        }
+
+        # add new back-end
+        self.vapi.nat44_lb_static_mapping_add_del_local(
+            is_add=1,
+            external_addr=external_addr,
+            external_port=external_port,
+            local=local,
+            protocol=IP_PROTOS.tcp)
+        server1_n = 0
+        server2_n = 0
+        server3_n = 0
+        clients = ip4_range(self.pg1.remote_ip4, 60, 110)
+        pkts = []
+        for client in clients:
+            p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+                 IP(src=client, dst=self.nat_addr) /
+                 TCP(sport=12346, dport=external_port))
+            pkts.append(p)
+        self.assertGreater(len(pkts), 0)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for p in capture:
+            if p[IP].dst == server1.ip4:
+                server1_n += 1
+            elif p[IP].dst == server2.ip4:
+                server2_n += 1
+            else:
+                server3_n += 1
+        self.assertGreater(server1_n, 0)
+        self.assertGreater(server2_n, 0)
+        self.assertGreater(server3_n, 0)
+
+        local = {
+            'addr': server2.ip4,
+            'port': local_port,
+            'probability': 10,
+            'vrf_id': 0
+        }
+
+        # remove one back-end
+        self.vapi.nat44_lb_static_mapping_add_del_local(
+            is_add=0,
+            external_addr=external_addr,
+            external_port=external_port,
+            local=local,
+            protocol=IP_PROTOS.tcp)
+        server1_n = 0
+        server2_n = 0
+        server3_n = 0
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for p in capture:
+            if p[IP].dst == server1.ip4:
+                server1_n += 1
+            elif p[IP].dst == server2.ip4:
+                server2_n += 1
+            else:
+                server3_n += 1
+        self.assertGreater(server1_n, 0)
+        self.assertEqual(server2_n, 0)
+        self.assertGreater(server3_n, 0)
+
+    def test_syslog_sess(self):
+        """ NAT44ED Test syslog session creation and deletion """
+        self.vapi.syslog_set_filter(
+            self.syslog_severity.SYSLOG_API_SEVERITY_INFO)
+        self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        self.tcp_port_out = capture[0][TCP].sport
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_sess(capture[0][Raw].load)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.nat_add_address(self.nat_addr, is_add=0)
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_sess(capture[0][Raw].load, False)
+
+    def test_twice_nat_interface_addr(self):
+        """ NAT44ED Acquire twice NAT addresses from interface """
+        flags = self.config_flags.NAT_IS_TWICE_NAT
+        self.vapi.nat44_add_del_interface_addr(
+            sw_if_index=self.pg11.sw_if_index,
+            flags=flags, is_add=1)
+
+        # no address in NAT pool
+        adresses = self.vapi.nat44_address_dump()
+        self.assertEqual(0, len(adresses))
+
+        # configure interface address and check NAT address pool
+        self.pg11.config_ip4()
+        adresses = self.vapi.nat44_address_dump()
+        self.assertEqual(1, len(adresses))
+        self.assertEqual(str(adresses[0].ip_address),
+                         self.pg11.local_ip4)
+        self.assertEqual(adresses[0].flags, flags)
+
+        # remove interface address and check NAT address pool
+        self.pg11.unconfig_ip4()
+        adresses = self.vapi.nat44_address_dump()
+        self.assertEqual(0, len(adresses))
+
+    def test_output_feature_stateful_acl(self):
+        """ NAT44ED output feature works with stateful ACL """
+
+        self.nat_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=self.config_flags.NAT_IS_INSIDE, is_add=1)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            flags=self.config_flags.NAT_IS_OUTSIDE, is_add=1)
+
+        # First ensure that the NAT is working sans ACL
+
+        # send packets out2in, no sessions yet so packets should drop
+        pkts_out2in = self.create_stream_out(self.pg1)
+        self.send_and_assert_no_replies(self.pg1, pkts_out2in)
+
+        # send packets into inside intf, ensure received via outside intf
+        pkts_in2out = self.create_stream_in(self.pg0, self.pg1)
+        capture = self.send_and_expect(self.pg0, pkts_in2out, self.pg1,
+                                       len(pkts_in2out))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        # send out2in again, with sessions created it should work now
+        pkts_out2in = self.create_stream_out(self.pg1)
+        capture = self.send_and_expect(self.pg1, pkts_out2in, self.pg0,
+                                       len(pkts_out2in))
+        self.verify_capture_in(capture, self.pg0)
+
+        # Create an ACL blocking everything
+        out2in_deny_rule = AclRule(is_permit=0)
+        out2in_acl = VppAcl(self, rules=[out2in_deny_rule])
+        out2in_acl.add_vpp_config()
+
+        # create an ACL to permit/reflect everything
+        in2out_reflect_rule = AclRule(is_permit=2)
+        in2out_acl = VppAcl(self, rules=[in2out_reflect_rule])
+        in2out_acl.add_vpp_config()
+
+        # apply as input acl on interface and confirm it blocks everything
+        acl_if = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+                                 n_input=1, acls=[out2in_acl])
+        acl_if.add_vpp_config()
+        self.send_and_assert_no_replies(self.pg1, pkts_out2in)
+
+        # apply output acl
+        acl_if.acls = [out2in_acl, in2out_acl]
+        acl_if.add_vpp_config()
+        # send in2out to generate ACL state (NAT state was created earlier)
+        capture = self.send_and_expect(self.pg0, pkts_in2out, self.pg1,
+                                       len(pkts_in2out))
+        self.verify_capture_out(capture, ignore_port=True)
+
+        # send out2in again. ACL state exists so it should work now.
+        # TCP packets with the syn flag set also need the ack flag
+        for p in pkts_out2in:
+            if p.haslayer(TCP) and p[TCP].flags & 0x02:
+                p[TCP].flags |= 0x10
+        capture = self.send_and_expect(self.pg1, pkts_out2in, self.pg0,
+                                       len(pkts_out2in))
+        self.verify_capture_in(capture, self.pg0)
+        self.logger.info(self.vapi.cli("show trace"))
+
+    def test_tcp_close(self):
+        """ NAT44ED Close TCP session from inside network - output feature """
+        old_timeouts = self.vapi.nat_get_timeouts()
+        new_transitory = 2
+        self.vapi.nat_set_timeouts(
+            udp=old_timeouts.udp,
+            tcp_established=old_timeouts.tcp_established,
+            icmp=old_timeouts.icmp,
+            tcp_transitory=new_transitory)
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.pg1.local_ip4)
+        twice_nat_addr = '10.0.1.3'
+        service_ip = '192.168.16.150'
+        self.nat_add_address(twice_nat_addr, twice_nat=1)
+
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_output_feature(
+            is_add=1,
+            sw_if_index=self.pg1.sw_if_index)
+
+        flags = (self.config_flags.NAT_IS_OUT2IN_ONLY |
+                 self.config_flags.NAT_IS_TWICE_NAT)
+        self.nat_add_static_mapping(self.pg0.remote_ip4,
+                                    service_ip, 80, 80,
+                                    proto=IP_PROTOS.tcp,
+                                    flags=flags)
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        start_sessnum = len(sessions)
+
+        # SYN packet out->in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=service_ip) /
+             TCP(sport=33898, dport=80, flags="S"))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        tcp_port = p[TCP].sport
+
+        # SYN + ACK packet in->out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+             TCP(sport=80, dport=tcp_port, flags="SA"))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # ACK packet out->in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=service_ip) /
+             TCP(sport=33898, dport=80, flags="A"))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        # FIN packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+             TCP(sport=80, dport=tcp_port, flags="FA", seq=100, ack=300))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # FIN+ACK packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=service_ip) /
+             TCP(sport=33898, dport=80, flags="FA", seq=300, ack=101))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        # ACK packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+             TCP(sport=80, dport=tcp_port, flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # session now in transitory timeout
+        # try SYN packet out->in - should be dropped
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=service_ip) /
+             TCP(sport=33898, dport=80, flags="S"))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.sleep(new_transitory, "wait for transitory timeout")
+        self.pg0.assert_nothing_captured(0)
+
+        # session should still exist
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - start_sessnum, 1)
+
+        # send FIN+ACK packet out -> in - will cause session to be wiped
+        # but won't create a new session
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=service_ip) /
+             TCP(sport=33898, dport=80, flags="FA", seq=300, ack=101))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - start_sessnum, 0)
+        self.pg0.assert_nothing_captured(0)
+
+    def test_tcp_session_close_in(self):
+        """ NAT44ED Close TCP session from inside network """
+
+        in_port = self.tcp_port_in
+        out_port = 10505
+        ext_port = self.tcp_external_port
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.nat_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                    in_port, out_port, proto=IP_PROTOS.tcp,
+                                    flags=self.config_flags.NAT_IS_TWICE_NAT)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        session_n = len(sessions)
+
+        self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+                                   tcp_transitory=2, icmp=5)
+
+        self.init_tcp_session(self.pg0, self.pg1, in_port, ext_port)
+
+        # FIN packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="FA", seq=100, ack=300))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        pkts = []
+
+        # ACK packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="A", seq=300, ack=101))
+        pkts.append(p)
+
+        # FIN packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=300, ack=101))
+        pkts.append(p)
+
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(2)
+
+        # ACK packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 1)
+
+        out2in_drops = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        in2out_drops = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+
+        # extra FIN packet out -> in - this should be dropped
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=300, ack=101))
+
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.assert_nothing_captured()
+
+        # extra ACK packet in -> out - this should be dropped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        stats = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - out2in_drops, 1)
+        stats = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - in2out_drops, 1)
+
+        self.sleep(3)
+        # extra ACK packet in -> out - this will cause session to be wiped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 0)
+
+    def test_tcp_session_close_out(self):
+        """ NAT44ED Close TCP session from outside network """
+
+        in_port = self.tcp_port_in
+        out_port = 10505
+        ext_port = self.tcp_external_port
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.nat_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                    in_port, out_port, proto=IP_PROTOS.tcp,
+                                    flags=self.config_flags.NAT_IS_TWICE_NAT)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        session_n = len(sessions)
+
+        self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+                                   tcp_transitory=2, icmp=5)
+
+        _ = self.init_tcp_session(self.pg0, self.pg1, in_port, ext_port)
+
+        # FIN packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=100, ack=300))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        # FIN+ACK packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="FA", seq=300, ack=101))
+
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # ACK packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="A", seq=101, ack=301))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 1)
+
+        out2in_drops = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        in2out_drops = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+
+        # extra FIN packet out -> in - this should be dropped
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=300, ack=101))
+
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.assert_nothing_captured()
+
+        # extra ACK packet in -> out - this should be dropped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        stats = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - out2in_drops, 1)
+        stats = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - in2out_drops, 1)
+
+        self.sleep(3)
+        # extra ACK packet in -> out - this will cause session to be wiped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 0)
+
+    def test_tcp_session_close_simultaneous(self):
+        """ NAT44ED Close TCP session from inside network """
+
+        in_port = self.tcp_port_in
+        ext_port = 10505
+
+        self.nat_add_address(self.nat_addr)
+        self.nat_add_inside_interface(self.pg0)
+        self.nat_add_outside_interface(self.pg1)
+        self.nat_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                    in_port, ext_port, proto=IP_PROTOS.tcp,
+                                    flags=self.config_flags.NAT_IS_TWICE_NAT)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        session_n = len(sessions)
+
+        self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+                                   tcp_transitory=2, icmp=5)
+
+        out_port = self.init_tcp_session(self.pg0, self.pg1, in_port, ext_port)
+
+        # FIN packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="FA", seq=100, ack=300))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # FIN packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=300, ack=100))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        # ACK packet in -> out
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(1)
+
+        # ACK packet out -> in
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="A", seq=301, ack=101))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(1)
+
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 1)
+
+        out2in_drops = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        in2out_drops = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+
+        # extra FIN packet out -> in - this should be dropped
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=ext_port, dport=out_port,
+                 flags="FA", seq=300, ack=101))
+
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.assert_nothing_captured()
+
+        # extra ACK packet in -> out - this should be dropped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        stats = self.get_err_counter(
+            '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - out2in_drops, 1)
+        stats = self.get_err_counter(
+            '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+        self.assertEqual(stats - in2out_drops, 1)
+
+        self.sleep(3)
+        # extra ACK packet in -> out - this will cause session to be wiped
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=in_port, dport=ext_port,
+                 flags="A", seq=101, ack=301))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions) - session_n, 0)
+
+    def test_dynamic_vrf(self):
+        """ NAT44ED dynamic translation test: different VRF"""
+
+        vrf_id_in = 33
+        vrf_id_out = 34
+
+        self.nat_add_address(self.nat_addr, vrf_id=vrf_id_in)
+
+        try:
+            self.configure_ip4_interface(self.pg7, table_id=vrf_id_in)
+            self.configure_ip4_interface(self.pg8, table_id=vrf_id_out)
+
+            self.nat_add_inside_interface(self.pg7)
+            self.nat_add_outside_interface(self.pg8)
+
+            # just basic stuff nothing special
+            pkts = self.create_stream_in(self.pg7, self.pg8)
+            self.pg7.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg8.get_capture(len(pkts))
+            self.verify_capture_out(capture, ignore_port=True)
+
+            pkts = self.create_stream_out(self.pg8)
+            self.pg8.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg7.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg7)
+
+        finally:
+            self.pg7.unconfig()
+            self.pg8.unconfig()
+
+            self.vapi.ip_table_add_del(is_add=0,
+                                       table={'table_id': vrf_id_in})
+            self.vapi.ip_table_add_del(is_add=0,
+                                       table={'table_id': vrf_id_out})
+
+    def test_dynamic_output_feature_vrf(self):
+        """ NAT44ED dynamic translation test: output-feature, VRF"""
+
+        # other then default (0)
+        new_vrf_id = 22
+
+        self.nat_add_address(self.nat_addr)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg7.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_interface_add_del_output_feature(
+            sw_if_index=self.pg8.sw_if_index,
+            is_add=1)
+
+        try:
+            self.configure_ip4_interface(self.pg7, table_id=new_vrf_id)
+            self.configure_ip4_interface(self.pg8, table_id=new_vrf_id)
+
+            # in2out
+            tcpn = self.statistics['/nat44-ed/in2out/slowpath/tcp']
+            udpn = self.statistics['/nat44-ed/in2out/slowpath/udp']
+            icmpn = self.statistics['/nat44-ed/in2out/slowpath/icmp']
+            drops = self.statistics['/nat44-ed/in2out/slowpath/drops']
+
+            pkts = self.create_stream_in(self.pg7, self.pg8)
+            self.pg7.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg8.get_capture(len(pkts))
+            self.verify_capture_out(capture, ignore_port=True)
+
+            if_idx = self.pg7.sw_if_index
+            cnt = self.statistics['/nat44-ed/in2out/slowpath/tcp']
+            self.assertEqual(cnt[:, if_idx].sum() - tcpn[:, if_idx].sum(), 2)
+            cnt = self.statistics['/nat44-ed/in2out/slowpath/udp']
+            self.assertEqual(cnt[:, if_idx].sum() - udpn[:, if_idx].sum(), 1)
+            cnt = self.statistics['/nat44-ed/in2out/slowpath/icmp']
+            self.assertEqual(cnt[:, if_idx].sum() - icmpn[:, if_idx].sum(), 1)
+            cnt = self.statistics['/nat44-ed/in2out/slowpath/drops']
+            self.assertEqual(cnt[:, if_idx].sum() - drops[:, if_idx].sum(), 0)
+
+            # out2in
+            tcpn = self.statistics['/nat44-ed/out2in/fastpath/tcp']
+            udpn = self.statistics['/nat44-ed/out2in/fastpath/udp']
+            icmpn = self.statistics['/nat44-ed/out2in/fastpath/icmp']
+            drops = self.statistics['/nat44-ed/out2in/fastpath/drops']
+
+            pkts = self.create_stream_out(self.pg8)
+            self.pg8.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg7.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg7)
+
+            if_idx = self.pg8.sw_if_index
+            cnt = self.statistics['/nat44-ed/out2in/fastpath/tcp']
+            self.assertEqual(cnt[:, if_idx].sum() - tcpn[:, if_idx].sum(), 2)
+            cnt = self.statistics['/nat44-ed/out2in/fastpath/udp']
+            self.assertEqual(cnt[:, if_idx].sum() - udpn[:, if_idx].sum(), 1)
+            cnt = self.statistics['/nat44-ed/out2in/fastpath/icmp']
+            self.assertEqual(cnt[:, if_idx].sum() - icmpn[:, if_idx].sum(), 1)
+            cnt = self.statistics['/nat44-ed/out2in/fastpath/drops']
+            self.assertEqual(cnt[:, if_idx].sum() - drops[:, if_idx].sum(), 0)
+
+            sessions = self.statistics['/nat44-ed/total-sessions']
+            self.assertEqual(sessions[:, 0].sum(), 3)
+
+        finally:
+            self.pg7.unconfig()
+            self.pg8.unconfig()
+
+            self.vapi.ip_table_add_del(is_add=0,
+                                       table={'table_id': new_vrf_id})
+
+    def test_next_src_nat(self):
+        """ NAT44ED On way back forward packet to nat44-in2out node. """
+
+        twice_nat_addr = '10.0.1.3'
+        external_port = 80
+        local_port = 8080
+        post_twice_nat_port = 0
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(twice_nat_addr, twice_nat=1)
+        flags = (self.config_flags.NAT_IS_OUT2IN_ONLY |
+                 self.config_flags.NAT_IS_SELF_TWICE_NAT)
+        self.nat_add_static_mapping(self.pg6.remote_ip4, self.pg1.remote_ip4,
+                                    local_port, external_port,
+                                    proto=IP_PROTOS.tcp, vrf_id=1,
+                                    flags=flags)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg6.sw_if_index,
+            is_add=1)
+
+        p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+             IP(src=self.pg6.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=12345, dport=external_port))
+        self.pg6.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, twice_nat_addr)
+            self.assertNotEqual(tcp.sport, 12345)
+            post_twice_nat_port = tcp.sport
+            self.assertEqual(ip.dst, self.pg6.remote_ip4)
+            self.assertEqual(tcp.dport, local_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+             IP(src=self.pg6.remote_ip4, dst=twice_nat_addr) /
+             TCP(sport=local_port, dport=post_twice_nat_port))
+        self.pg6.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.pg1.remote_ip4)
+            self.assertEqual(tcp.sport, external_port)
+            self.assertEqual(ip.dst, self.pg6.remote_ip4)
+            self.assertEqual(tcp.dport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_one_armed_nat44_static(self):
+        """ NAT44ED One armed NAT and 1:1 NAPT asymmetrical rule """
+
+        remote_host = self.pg4.remote_hosts[0]
+        local_host = self.pg4.remote_hosts[1]
+        external_port = 80
+        local_port = 8080
+        eh_port_in = 0
+
+        self.vapi.nat44_forwarding_enable_disable(enable=1)
+        self.nat_add_address(self.nat_addr, twice_nat=1)
+        flags = (self.config_flags.NAT_IS_OUT2IN_ONLY |
+                 self.config_flags.NAT_IS_TWICE_NAT)
+        self.nat_add_static_mapping(local_host.ip4, self.nat_addr,
+                                    local_port, external_port,
+                                    proto=IP_PROTOS.tcp, flags=flags)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg4.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_interface_add_del_feature(
+            sw_if_index=self.pg4.sw_if_index,
+            flags=flags, is_add=1)
+
+        # from client to service
+        p = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+             IP(src=remote_host.ip4, dst=self.nat_addr) /
+             TCP(sport=12345, dport=external_port))
+        self.pg4.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg4.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, local_host.ip4)
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.dport, local_port)
+            self.assertNotEqual(tcp.sport, 12345)
+            eh_port_in = tcp.sport
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # from service back to client
+        p = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+             IP(src=local_host.ip4, dst=self.nat_addr) /
+             TCP(sport=local_port, dport=eh_port_in))
+        self.pg4.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg4.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, remote_host.ip4)
+            self.assertEqual(tcp.sport, external_port)
+            self.assertEqual(tcp.dport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_nat44_ei.py b/test/test_nat44_ei.py
new file mode 100644
index 0000000..4160ea2
--- /dev/null
+++ b/test/test_nat44_ei.py
@@ -0,0 +1,4280 @@
+#!/usr/bin/env python3
+
+import ipaddress
+import random
+import socket
+import struct
+import unittest
+from io import BytesIO
+from time import sleep
+
+import scapy.compat
+from framework import VppTestCase, VppTestRunner
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
+    IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
+    PacketListField
+from scapy.data import IP_PROTOS
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply
+from scapy.layers.l2 import Ether, ARP, GRE
+from scapy.packet import Raw
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ppp
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_neighbor import VppNeighbor
+from vpp_papi import VppEnum
+
+
+# NAT HA protocol event data
+class Event(Packet):
+    name = "Event"
+    fields_desc = [ByteEnumField("event_type", None,
+                                 {1: "add", 2: "del", 3: "refresh"}),
+                   ByteEnumField("protocol", None,
+                                 {0: "other", 1: "udp", 2: "tcp", 3: "icmp"}),
+                   ShortField("flags", 0),
+                   IPField("in_addr", None),
+                   IPField("out_addr", None),
+                   ShortField("in_port", None),
+                   ShortField("out_port", None),
+                   IPField("eh_addr", None),
+                   IPField("ehn_addr", None),
+                   ShortField("eh_port", None),
+                   ShortField("ehn_port", None),
+                   IntField("fib_index", None),
+                   IntField("total_pkts", 0),
+                   LongField("total_bytes", 0)]
+
+    def extract_padding(self, s):
+        return "", s
+
+
+# NAT HA protocol header
+class HANATStateSync(Packet):
+    name = "HA NAT state sync"
+    fields_desc = [XByteField("version", 1),
+                   FlagsField("flags", 0, 8, ['ACK']),
+                   FieldLenField("count", None, count_of="events"),
+                   IntField("sequence_number", 1),
+                   IntField("thread_index", 0),
+                   PacketListField("events", [], Event,
+                                   count_from=lambda pkt: pkt.count)]
+
+
+class MethodHolder(VppTestCase):
+    """ NAT create capture and verify method holder """
+
+    @property
+    def config_flags(self):
+        return VppEnum.vl_api_nat44_ei_config_flags_t
+
+    @property
+    def SYSLOG_SEVERITY(self):
+        return VppEnum.vl_api_syslog_severity_t
+
+    def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
+                                 local_port=0, external_port=0, vrf_id=0,
+                                 is_add=1, external_sw_if_index=0xFFFFFFFF,
+                                 proto=0, tag="", flags=0):
+        """
+        Add/delete NAT44EI static mapping
+
+        :param local_ip: Local IP address
+        :param external_ip: External IP address
+        :param local_port: Local port number (Optional)
+        :param external_port: External port number (Optional)
+        :param vrf_id: VRF ID (Default 0)
+        :param is_add: 1 if add, 0 if delete (Default add)
+        :param external_sw_if_index: External interface instead of IP address
+        :param proto: IP protocol (Mandatory if port specified)
+        :param tag: Opaque string tag
+        :param flags: NAT configuration flags
+        """
+
+        if not (local_port and external_port):
+            flags |= self.config_flags.NAT44_EI_ADDR_ONLY_MAPPING
+
+        self.vapi.nat44_ei_add_del_static_mapping(
+            is_add=is_add,
+            local_ip_address=local_ip,
+            external_ip_address=external_ip,
+            external_sw_if_index=external_sw_if_index,
+            local_port=local_port,
+            external_port=external_port,
+            vrf_id=vrf_id, protocol=proto,
+            flags=flags,
+            tag=tag)
+
+    def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF):
+        """
+        Add/delete NAT44EI address
+
+        :param ip: IP address
+        :param is_add: 1 if add, 0 if delete (Default add)
+        """
+        self.vapi.nat44_ei_add_del_address_range(first_ip_address=ip,
+                                                 last_ip_address=ip,
+                                                 vrf_id=vrf_id,
+                                                 is_add=is_add)
+
+    def create_routes_and_neigbors(self):
+        r1 = VppIpRoute(self, self.pg7.remote_ip4, 32,
+                        [VppRoutePath(self.pg7.remote_ip4,
+                                      self.pg7.sw_if_index)])
+        r2 = VppIpRoute(self, self.pg8.remote_ip4, 32,
+                        [VppRoutePath(self.pg8.remote_ip4,
+                                      self.pg8.sw_if_index)])
+        r1.add_vpp_config()
+        r2.add_vpp_config()
+
+        n1 = VppNeighbor(self,
+                         self.pg7.sw_if_index,
+                         self.pg7.remote_mac,
+                         self.pg7.remote_ip4,
+                         is_static=1)
+        n2 = VppNeighbor(self,
+                         self.pg8.sw_if_index,
+                         self.pg8.remote_mac,
+                         self.pg8.remote_ip4,
+                         is_static=1)
+        n1.add_vpp_config()
+        n2.add_vpp_config()
+
+    def create_stream_in(self, in_if, out_if, dst_ip=None, ttl=64):
+        """
+        Create packet stream for inside network
+
+        :param in_if: Inside interface
+        :param out_if: Outside interface
+        :param dst_ip: Destination address
+        :param ttl: TTL of generated packets
+        """
+        if dst_ip is None:
+            dst_ip = out_if.remote_ip4
+
+        pkts = []
+        # TCP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        pkts.extend([p, p])
+
+        # UDP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(sport=self.udp_port_in, dport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+
+        return pkts
+
+    def compose_ip6(self, ip4, pref, plen):
+        """
+        Compose IPv4-embedded IPv6 addresses
+
+        :param ip4: IPv4 address
+        :param pref: IPv6 prefix
+        :param plen: IPv6 prefix length
+        :returns: IPv4-embedded IPv6 addresses
+        """
+        pref_n = list(socket.inet_pton(socket.AF_INET6, pref))
+        ip4_n = list(socket.inet_pton(socket.AF_INET, ip4))
+        if plen == 32:
+            pref_n[4] = ip4_n[0]
+            pref_n[5] = ip4_n[1]
+            pref_n[6] = ip4_n[2]
+            pref_n[7] = ip4_n[3]
+        elif plen == 40:
+            pref_n[5] = ip4_n[0]
+            pref_n[6] = ip4_n[1]
+            pref_n[7] = ip4_n[2]
+            pref_n[9] = ip4_n[3]
+        elif plen == 48:
+            pref_n[6] = ip4_n[0]
+            pref_n[7] = ip4_n[1]
+            pref_n[9] = ip4_n[2]
+            pref_n[10] = ip4_n[3]
+        elif plen == 56:
+            pref_n[7] = ip4_n[0]
+            pref_n[9] = ip4_n[1]
+            pref_n[10] = ip4_n[2]
+            pref_n[11] = ip4_n[3]
+        elif plen == 64:
+            pref_n[9] = ip4_n[0]
+            pref_n[10] = ip4_n[1]
+            pref_n[11] = ip4_n[2]
+            pref_n[12] = ip4_n[3]
+        elif plen == 96:
+            pref_n[12] = ip4_n[0]
+            pref_n[13] = ip4_n[1]
+            pref_n[14] = ip4_n[2]
+            pref_n[15] = ip4_n[3]
+        packed_pref_n = b''.join([scapy.compat.chb(x) for x in pref_n])
+        return socket.inet_ntop(socket.AF_INET6, packed_pref_n)
+
+    def create_stream_out(self, out_if, dst_ip=None, ttl=64,
+                          use_inside_ports=False):
+        """
+        Create packet stream for outside network
+
+        :param out_if: Outside interface
+        :param dst_ip: Destination IP address (Default use global NAT address)
+        :param ttl: TTL of generated packets
+        :param use_inside_ports: Use inside NAT ports as destination ports
+               instead of outside ports
+        """
+        if dst_ip is None:
+            dst_ip = self.nat_addr
+        if not use_inside_ports:
+            tcp_port = self.tcp_port_out
+            udp_port = self.udp_port_out
+            icmp_id = self.icmp_id_out
+        else:
+            tcp_port = self.tcp_port_in
+            udp_port = self.udp_port_in
+            icmp_id = self.icmp_id_in
+        pkts = []
+        # TCP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(dport=tcp_port, sport=20))
+        pkts.extend([p, p])
+
+        # UDP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(dport=udp_port, sport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=icmp_id, type='echo-reply'))
+        pkts.append(p)
+
+        return pkts
+
+    def create_stream_out_ip6(self, out_if, src_ip, dst_ip, hl=64):
+        """
+        Create packet stream for outside network
+
+        :param out_if: Outside interface
+        :param dst_ip: Destination IP address (Default use global NAT address)
+        :param hl: HL of generated packets
+        """
+        pkts = []
+        # TCP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+             TCP(dport=self.tcp_port_out, sport=20))
+        pkts.append(p)
+
+        # UDP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+             UDP(dport=self.udp_port_out, sport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+             ICMPv6EchoReply(id=self.icmp_id_out))
+        pkts.append(p)
+
+        return pkts
+
+    def verify_capture_out(self, capture, nat_ip=None, same_port=False,
+                           dst_ip=None, is_ip6=False, ignore_port=False):
+        """
+        Verify captured packets on outside network
+
+        :param capture: Captured packets
+        :param nat_ip: Translated IP address (Default use global NAT address)
+        :param same_port: Source port number is not translated (Default False)
+        :param dst_ip: Destination IP address (Default do not verify)
+        :param is_ip6: If L3 protocol is IPv6 (Default False)
+        """
+        if is_ip6:
+            IP46 = IPv6
+            ICMP46 = ICMPv6EchoRequest
+        else:
+            IP46 = IP
+            ICMP46 = ICMP
+        if nat_ip is None:
+            nat_ip = self.nat_addr
+        for packet in capture:
+            try:
+                if not is_ip6:
+                    self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP46].src, nat_ip)
+                if dst_ip is not None:
+                    self.assertEqual(packet[IP46].dst, dst_ip)
+                if packet.haslayer(TCP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[ICMP46].id, self.icmp_id_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[ICMP46].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP46].id
+                    self.assert_packet_checksums_valid(packet)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+    def verify_capture_out_ip6(self, capture, nat_ip, same_port=False,
+                               dst_ip=None):
+        """
+        Verify captured packets on outside network
+
+        :param capture: Captured packets
+        :param nat_ip: Translated IP address
+        :param same_port: Source port number is not translated (Default False)
+        :param dst_ip: Destination IP address (Default do not verify)
+        """
+        return self.verify_capture_out(capture, nat_ip, same_port, dst_ip,
+                                       True)
+
+    def verify_capture_in(self, capture, in_if):
+        """
+        Verify captured packets on inside network
+
+        :param capture: Captured packets
+        :param in_if: Inside interface
+        """
+        for packet in capture:
+            try:
+                self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP].dst, in_if.remote_ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+    def verify_capture_no_translation(self, capture, ingress_if, egress_if):
+        """
+        Verify captured packet that don't have to be translated
+
+        :param capture: Captured packets
+        :param ingress_if: Ingress interface
+        :param egress_if: Egress interface
+        """
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, ingress_if.remote_ip4)
+                self.assertEqual(packet[IP].dst, egress_if.remote_ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].sport, self.tcp_port_in)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].sport, self.udp_port_in)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+    def verify_capture_out_with_icmp_errors(self, capture, src_ip=None,
+                                            icmp_type=11):
+        """
+        Verify captured packets with ICMP errors on outside network
+
+        :param capture: Captured packets
+        :param src_ip: Translated IP address or IP address of VPP
+                       (Default use global NAT address)
+        :param icmp_type: Type of error ICMP packet
+                          we are expecting (Default 11)
+        """
+        if src_ip is None:
+            src_ip = self.nat_addr
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, src_ip)
+                self.assertEqual(packet.haslayer(ICMP), 1)
+                icmp = packet[ICMP]
+                self.assertEqual(icmp.type, icmp_type)
+                self.assertTrue(icmp.haslayer(IPerror))
+                inner_ip = icmp[IPerror]
+                if inner_ip.haslayer(TCPerror):
+                    self.assertEqual(inner_ip[TCPerror].dport,
+                                     self.tcp_port_out)
+                elif inner_ip.haslayer(UDPerror):
+                    self.assertEqual(inner_ip[UDPerror].dport,
+                                     self.udp_port_out)
+                else:
+                    self.assertEqual(inner_ip[ICMPerror].id, self.icmp_id_out)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+    def verify_capture_in_with_icmp_errors(self, capture, in_if, icmp_type=11):
+        """
+        Verify captured packets with ICMP errors on inside network
+
+        :param capture: Captured packets
+        :param in_if: Inside interface
+        :param icmp_type: Type of error ICMP packet
+                          we are expecting (Default 11)
+        """
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].dst, in_if.remote_ip4)
+                self.assertEqual(packet.haslayer(ICMP), 1)
+                icmp = packet[ICMP]
+                self.assertEqual(icmp.type, icmp_type)
+                self.assertTrue(icmp.haslayer(IPerror))
+                inner_ip = icmp[IPerror]
+                if inner_ip.haslayer(TCPerror):
+                    self.assertEqual(inner_ip[TCPerror].sport,
+                                     self.tcp_port_in)
+                elif inner_ip.haslayer(UDPerror):
+                    self.assertEqual(inner_ip[UDPerror].sport,
+                                     self.udp_port_in)
+                else:
+                    self.assertEqual(inner_ip[ICMPerror].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+    def create_stream_frag(self, src_if, dst, sport, dport, data,
+                           proto=IP_PROTOS.tcp, echo_reply=False):
+        """
+        Create fragmented packet stream
+
+        :param src_if: Source interface
+        :param dst: Destination IPv4 address
+        :param sport: Source port
+        :param dport: Destination port
+        :param data: Payload data
+        :param proto: protocol (TCP, UDP, ICMP)
+        :param echo_reply: use echo_reply if protocol is ICMP
+        :returns: Fragments
+        """
+        if proto == IP_PROTOS.tcp:
+            p = (IP(src=src_if.remote_ip4, dst=dst) /
+                 TCP(sport=sport, dport=dport) /
+                 Raw(data))
+            p = p.__class__(scapy.compat.raw(p))
+            chksum = p[TCP].chksum
+            proto_header = TCP(sport=sport, dport=dport, chksum=chksum)
+        elif proto == IP_PROTOS.udp:
+            proto_header = UDP(sport=sport, dport=dport)
+        elif proto == IP_PROTOS.icmp:
+            if not echo_reply:
+                proto_header = ICMP(id=sport, type='echo-request')
+            else:
+                proto_header = ICMP(id=sport, type='echo-reply')
+        else:
+            raise Exception("Unsupported protocol")
+        id = random.randint(0, 65535)
+        pkts = []
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[0:4])
+        else:
+            raw = Raw(data[0:16])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=0, id=id) /
+             proto_header /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[4:20])
+        else:
+            raw = Raw(data[16:32])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=3, id=id,
+                proto=proto) /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[20:])
+        else:
+            raw = Raw(data[32:])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, frag=5, proto=proto,
+                id=id) /
+             raw)
+        pkts.append(p)
+        return pkts
+
+    def reass_frags_and_verify(self, frags, src, dst):
+        """
+        Reassemble and verify fragmented packet
+
+        :param frags: Captured fragments
+        :param src: Source IPv4 address to verify
+        :param dst: Destination IPv4 address to verify
+
+        :returns: Reassembled IPv4 packet
+        """
+        buffer = BytesIO()
+        for p in frags:
+            self.assertEqual(p[IP].src, src)
+            self.assertEqual(p[IP].dst, dst)
+            self.assert_ip_checksum_valid(p)
+            buffer.seek(p[IP].frag * 8)
+            buffer.write(bytes(p[IP].payload))
+        ip = IP(src=frags[0][IP].src, dst=frags[0][IP].dst,
+                proto=frags[0][IP].proto)
+        if ip.proto == IP_PROTOS.tcp:
+            p = (ip / TCP(buffer.getvalue()))
+            self.logger.debug(ppp("Reassembled:", p))
+            self.assert_tcp_checksum_valid(p)
+        elif ip.proto == IP_PROTOS.udp:
+            p = (ip / UDP(buffer.getvalue()[:8]) /
+                 Raw(buffer.getvalue()[8:]))
+        elif ip.proto == IP_PROTOS.icmp:
+            p = (ip / ICMP(buffer.getvalue()))
+        return p
+
+    def verify_ipfix_nat44_ses(self, data):
+        """
+        Verify IPFIX NAT44EI session create/delete event
+
+        :param data: Decoded IPFIX data records
+        """
+        nat44_ses_create_num = 0
+        nat44_ses_delete_num = 0
+        self.assertEqual(6, len(data))
+        for record in data:
+            # natEvent
+            self.assertIn(scapy.compat.orb(record[230]), [4, 5])
+            if scapy.compat.orb(record[230]) == 4:
+                nat44_ses_create_num += 1
+            else:
+                nat44_ses_delete_num += 1
+            # sourceIPv4Address
+            self.assertEqual(self.pg0.remote_ip4,
+                             str(ipaddress.IPv4Address(record[8])))
+            # postNATSourceIPv4Address
+            self.assertEqual(socket.inet_pton(socket.AF_INET, self.nat_addr),
+                             record[225])
+            # ingressVRFID
+            self.assertEqual(struct.pack("!I", 0), record[234])
+            # protocolIdentifier/sourceTransportPort
+            # /postNAPTSourceTransportPort
+            if IP_PROTOS.icmp == scapy.compat.orb(record[4]):
+                self.assertEqual(struct.pack("!H", self.icmp_id_in), record[7])
+                self.assertEqual(struct.pack("!H", self.icmp_id_out),
+                                 record[227])
+            elif IP_PROTOS.tcp == scapy.compat.orb(record[4]):
+                self.assertEqual(struct.pack("!H", self.tcp_port_in),
+                                 record[7])
+                self.assertEqual(struct.pack("!H", self.tcp_port_out),
+                                 record[227])
+            elif IP_PROTOS.udp == scapy.compat.orb(record[4]):
+                self.assertEqual(struct.pack("!H", self.udp_port_in),
+                                 record[7])
+                self.assertEqual(struct.pack("!H", self.udp_port_out),
+                                 record[227])
+            else:
+                self.fail("Invalid protocol")
+        self.assertEqual(3, nat44_ses_create_num)
+        self.assertEqual(3, nat44_ses_delete_num)
+
+    def verify_ipfix_addr_exhausted(self, data):
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        self.assertEqual(scapy.compat.orb(record[230]), 3)
+        # natPoolID
+        self.assertEqual(struct.pack("!I", 0), record[283])
+
+    def verify_ipfix_max_sessions(self, data, limit):
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        self.assertEqual(scapy.compat.orb(record[230]), 13)
+        # natQuotaExceededEvent
+        self.assertEqual(struct.pack("!I", 1), record[466])
+        # maxSessionEntries
+        self.assertEqual(struct.pack("!I", limit), record[471])
+
+    def verify_no_nat44_user(self):
+        """ Verify that there is no NAT44EI user """
+        users = self.vapi.nat44_ei_user_dump()
+        self.assertEqual(len(users), 0)
+        users = self.statistics['/nat44-ei/total-users']
+        self.assertEqual(users[0][0], 0)
+        sessions = self.statistics['/nat44-ei/total-sessions']
+        self.assertEqual(sessions[0][0], 0)
+
+    def verify_syslog_apmap(self, data, is_add=True):
+        message = data.decode('utf-8')
+        try:
+            message = SyslogMessage.parse(message)
+        except ParseError as e:
+            self.logger.error(e)
+            raise
+        else:
+            self.assertEqual(message.severity, SyslogSeverity.info)
+            self.assertEqual(message.appname, 'NAT')
+            self.assertEqual(message.msgid, 'APMADD' if is_add else 'APMDEL')
+            sd_params = message.sd.get('napmap')
+            self.assertTrue(sd_params is not None)
+            self.assertEqual(sd_params.get('IATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip4)
+            self.assertEqual(sd_params.get('ISPORT'), "%d" % self.tcp_port_in)
+            self.assertEqual(sd_params.get('XATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('XSADDR'), self.nat_addr)
+            self.assertEqual(sd_params.get('XSPORT'), "%d" % self.tcp_port_out)
+            self.assertEqual(sd_params.get('PROTO'), "%d" % IP_PROTOS.tcp)
+            self.assertTrue(sd_params.get('SSUBIX') is not None)
+            self.assertEqual(sd_params.get('SVLAN'), '0')
+
+    def verify_mss_value(self, pkt, mss):
+        if not pkt.haslayer(IP) or not pkt.haslayer(TCP):
+            raise TypeError("Not a TCP/IP packet")
+
+        for option in pkt[TCP].options:
+            if option[0] == 'MSS':
+                self.assertEqual(option[1], mss)
+                self.assert_tcp_checksum_valid(pkt)
+
+    @staticmethod
+    def proto2layer(proto):
+        if proto == IP_PROTOS.tcp:
+            return TCP
+        elif proto == IP_PROTOS.udp:
+            return UDP
+        elif proto == IP_PROTOS.icmp:
+            return ICMP
+        else:
+            raise Exception("Unsupported protocol")
+
+    def frag_in_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+                      ignore_port=False):
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        self.port_in = random.randint(1025, 65535)
+
+        # in2out
+        pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+                                       self.port_in, 20, data, proto)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg1.get_capture(len(pkts))
+        if not dont_translate:
+            p = self.reass_frags_and_verify(frags,
+                                            self.nat_addr,
+                                            self.pg1.remote_ip4)
+        else:
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg0.remote_ip4,
+                                            self.pg1.remote_ip4)
+        if proto != IP_PROTOS.icmp:
+            if not dont_translate:
+                self.assertEqual(p[layer].dport, 20)
+                if not ignore_port:
+                    self.assertNotEqual(p[layer].sport, self.port_in)
+            else:
+                self.assertEqual(p[layer].sport, self.port_in)
+        else:
+            if not ignore_port:
+                if not dont_translate:
+                    self.assertNotEqual(p[layer].id, self.port_in)
+                else:
+                    self.assertEqual(p[layer].id, self.port_in)
+        self.assertEqual(data, p[Raw].load)
+
+        # out2in
+        if not dont_translate:
+            dst_addr = self.nat_addr
+        else:
+            dst_addr = self.pg0.remote_ip4
+        if proto != IP_PROTOS.icmp:
+            sport = 20
+            dport = p[layer].sport
+        else:
+            sport = p[layer].id
+            dport = 0
+        pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport, data,
+                                       proto, echo_reply=True)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.pg1.remote_ip4,
+                                        self.pg0.remote_ip4)
+        if proto != IP_PROTOS.icmp:
+            self.assertEqual(p[layer].sport, 20)
+            self.assertEqual(p[layer].dport, self.port_in)
+        else:
+            self.assertEqual(p[layer].id, self.port_in)
+        self.assertEqual(data, p[Raw].load)
+
+    def reass_hairpinning(self, server_addr, server_in_port, server_out_port,
+                          host_in_port, proto=IP_PROTOS.tcp,
+                          ignore_port=False):
+
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+
+        # send packet from host to server
+        pkts = self.create_stream_frag(self.pg0,
+                                       self.nat_addr,
+                                       host_in_port,
+                                       server_out_port,
+                                       data,
+                                       proto)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.nat_addr,
+                                        server_addr)
+        if proto != IP_PROTOS.icmp:
+            if not ignore_port:
+                self.assertNotEqual(p[layer].sport, host_in_port)
+            self.assertEqual(p[layer].dport, server_in_port)
+        else:
+            if not ignore_port:
+                self.assertNotEqual(p[layer].id, host_in_port)
+        self.assertEqual(data, p[Raw].load)
+
+    def frag_out_of_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+                          ignore_port=False):
+        layer = self.proto2layer(proto)
+
+        if proto == IP_PROTOS.tcp:
+            data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        else:
+            data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        self.port_in = random.randint(1025, 65535)
+
+        for i in range(2):
+            # in2out
+            pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+                                           self.port_in, 20, data, proto)
+            pkts.reverse()
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg1.get_capture(len(pkts))
+            if not dont_translate:
+                p = self.reass_frags_and_verify(frags,
+                                                self.nat_addr,
+                                                self.pg1.remote_ip4)
+            else:
+                p = self.reass_frags_and_verify(frags,
+                                                self.pg0.remote_ip4,
+                                                self.pg1.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                if not dont_translate:
+                    self.assertEqual(p[layer].dport, 20)
+                    if not ignore_port:
+                        self.assertNotEqual(p[layer].sport, self.port_in)
+                else:
+                    self.assertEqual(p[layer].sport, self.port_in)
+            else:
+                if not ignore_port:
+                    if not dont_translate:
+                        self.assertNotEqual(p[layer].id, self.port_in)
+                    else:
+                        self.assertEqual(p[layer].id, self.port_in)
+            self.assertEqual(data, p[Raw].load)
+
+            # out2in
+            if not dont_translate:
+                dst_addr = self.nat_addr
+            else:
+                dst_addr = self.pg0.remote_ip4
+            if proto != IP_PROTOS.icmp:
+                sport = 20
+                dport = p[layer].sport
+            else:
+                sport = p[layer].id
+                dport = 0
+            pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport,
+                                           data, proto, echo_reply=True)
+            pkts.reverse()
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            frags = self.pg0.get_capture(len(pkts))
+            p = self.reass_frags_and_verify(frags,
+                                            self.pg1.remote_ip4,
+                                            self.pg0.remote_ip4)
+            if proto != IP_PROTOS.icmp:
+                self.assertEqual(p[layer].sport, 20)
+                self.assertEqual(p[layer].dport, self.port_in)
+            else:
+                self.assertEqual(p[layer].id, self.port_in)
+            self.assertEqual(data, p[Raw].load)
+
+
+def get_nat44_ei_in2out_worker_index(ip, vpp_worker_count):
+    if 0 == vpp_worker_count:
+        return 0
+    numeric = socket.inet_aton(ip)
+    numeric = struct.unpack("!L", numeric)[0]
+    numeric = socket.htonl(numeric)
+    h = numeric + (numeric >> 8) + (numeric >> 16) + (numeric >> 24)
+    return 1 + h % vpp_worker_count
+
+
+class TestNAT44EI(MethodHolder):
+    """ NAT44EI Test Cases """
+
+    max_translations = 10240
+    max_users = 10240
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestNAT44EI, cls).setUpClass()
+        cls.vapi.cli("set log class nat44-ei level debug")
+
+        cls.tcp_port_in = 6303
+        cls.tcp_port_out = 6303
+        cls.udp_port_in = 6304
+        cls.udp_port_out = 6304
+        cls.icmp_id_in = 6305
+        cls.icmp_id_out = 6305
+        cls.nat_addr = '10.0.0.3'
+        cls.ipfix_src_port = 4739
+        cls.ipfix_domain_id = 1
+        cls.tcp_external_port = 80
+        cls.udp_external_port = 69
+
+        cls.create_pg_interfaces(range(10))
+        cls.interfaces = list(cls.pg_interfaces[0:4])
+
+        for i in cls.interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+        cls.pg0.generate_remote_hosts(3)
+        cls.pg0.configure_ipv4_neighbors()
+
+        cls.pg1.generate_remote_hosts(1)
+        cls.pg1.configure_ipv4_neighbors()
+
+        cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7]))
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 10})
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 20})
+
+        cls.pg4._local_ip4 = "172.16.255.1"
+        cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2"
+        cls.pg4.set_table_ip4(10)
+        cls.pg5._local_ip4 = "172.17.255.3"
+        cls.pg5._remote_hosts[0]._ip4 = "172.17.255.4"
+        cls.pg5.set_table_ip4(10)
+        cls.pg6._local_ip4 = "172.16.255.1"
+        cls.pg6._remote_hosts[0]._ip4 = "172.16.255.2"
+        cls.pg6.set_table_ip4(20)
+        for i in cls.overlapping_interfaces:
+            i.config_ip4()
+            i.admin_up()
+            i.resolve_arp()
+
+        cls.pg7.admin_up()
+        cls.pg8.admin_up()
+
+        cls.pg9.generate_remote_hosts(2)
+        cls.pg9.config_ip4()
+        cls.vapi.sw_interface_add_del_address(
+            sw_if_index=cls.pg9.sw_if_index,
+            prefix="10.0.0.1/24")
+
+        cls.pg9.admin_up()
+        cls.pg9.resolve_arp()
+        cls.pg9._remote_hosts[1]._ip4 = cls.pg9._remote_hosts[0]._ip4
+        cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
+        cls.pg9.resolve_arp()
+
+    def plugin_enable(self):
+        self.vapi.nat44_ei_plugin_enable_disable(
+            sessions=self.max_translations,
+            users=self.max_users, enable=1)
+
+    def setUp(self):
+        super(TestNAT44EI, self).setUp()
+        self.plugin_enable()
+
+    def tearDown(self):
+        super(TestNAT44EI, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.nat44_ei_ipfix_enable_disable(
+                domain_id=self.ipfix_domain_id, src_port=self.ipfix_src_port,
+                enable=0)
+            self.ipfix_src_port = 4739
+            self.ipfix_domain_id = 1
+
+            self.vapi.nat44_ei_plugin_enable_disable(enable=0)
+            self.vapi.cli("clear logging")
+
+    def test_clear_sessions(self):
+        """ NAT44EI session clearing test """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        sessions = self.statistics['/nat44-ei/total-sessions']
+        self.assertGreater(sessions[:, 0].sum(), 0, "Session count invalid")
+        self.logger.info("sessions before clearing: %s" % sessions[0][0])
+
+        self.vapi.cli("clear nat44 ei sessions")
+
+        sessions = self.statistics['/nat44-ei/total-sessions']
+        self.assertEqual(sessions[:, 0].sum(), 0, "Session count invalid")
+        self.logger.info("sessions after clearing: %s" % sessions[0][0])
+
+    def test_dynamic(self):
+        """ NAT44EI dynamic translation test """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # in2out
+        tcpn = self.statistics['/nat44-ei/in2out/slowpath/tcp']
+        udpn = self.statistics['/nat44-ei/in2out/slowpath/udp']
+        icmpn = self.statistics['/nat44-ei/in2out/slowpath/icmp']
+        drops = self.statistics['/nat44-ei/in2out/slowpath/drops']
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        if_idx = self.pg0.sw_if_index
+        cnt = self.statistics['/nat44-ei/in2out/slowpath/tcp']
+        self.assertEqual(cnt[:, if_idx].sum() - tcpn[:, if_idx].sum(), 2)
+        cnt = self.statistics['/nat44-ei/in2out/slowpath/udp']
+        self.assertEqual(cnt[:, if_idx].sum() - udpn[:, if_idx].sum(), 1)
+        cnt = self.statistics['/nat44-ei/in2out/slowpath/icmp']
+        self.assertEqual(cnt[:, if_idx].sum() - icmpn[:, if_idx].sum(), 1)
+        cnt = self.statistics['/nat44-ei/in2out/slowpath/drops']
+        self.assertEqual(cnt[:, if_idx].sum() - drops[:, if_idx].sum(), 0)
+
+        # out2in
+        tcpn = self.statistics['/nat44-ei/out2in/slowpath/tcp']
+        udpn = self.statistics['/nat44-ei/out2in/slowpath/udp']
+        icmpn = self.statistics['/nat44-ei/out2in/slowpath/icmp']
+        drops = self.statistics['/nat44-ei/out2in/slowpath/drops']
+
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        if_idx = self.pg1.sw_if_index
+        cnt = self.statistics['/nat44-ei/out2in/slowpath/tcp']
+        self.assertEqual(cnt[:, if_idx].sum() - tcpn[:, if_idx].sum(), 2)
+        cnt = self.statistics['/nat44-ei/out2in/slowpath/udp']
+        self.assertEqual(cnt[:, if_idx].sum() - udpn[:, if_idx].sum(), 1)
+        cnt = self.statistics['/nat44-ei/out2in/slowpath/icmp']
+        self.assertEqual(cnt[:, if_idx].sum() - icmpn[:, if_idx].sum(), 1)
+        cnt = self.statistics['/nat44-ei/out2in/slowpath/drops']
+        self.assertEqual(cnt[:, if_idx].sum() - drops[:, if_idx].sum(), 0)
+
+        users = self.statistics['/nat44-ei/total-users']
+        self.assertEqual(users[:, 0].sum(), 1)
+        sessions = self.statistics['/nat44-ei/total-sessions']
+        self.assertEqual(sessions[:, 0].sum(), 3)
+
+    def test_dynamic_icmp_errors_in2out_ttl_1(self):
+        """ NAT44EI handling of client packets with TTL=1 """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # Client side - generate traffic
+        pkts = self.create_stream_in(self.pg0, self.pg1, ttl=1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Client side - verify ICMP type 11 packets
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in_with_icmp_errors(capture, self.pg0)
+
+    def test_dynamic_icmp_errors_out2in_ttl_1(self):
+        """ NAT44EI handling of server packets with TTL=1 """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # Client side - create sessions
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Server side - generate traffic
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+        pkts = self.create_stream_out(self.pg1, ttl=1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Server side - verify ICMP type 11 packets
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out_with_icmp_errors(capture,
+                                                 src_ip=self.pg1.local_ip4)
+
+    def test_dynamic_icmp_errors_in2out_ttl_2(self):
+        """ NAT44EI handling of error responses to client packets with TTL=2
+        """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # Client side - generate traffic
+        pkts = self.create_stream_in(self.pg0, self.pg1, ttl=2)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Server side - simulate ICMP type 11 response
+        capture = self.pg1.get_capture(len(pkts))
+        pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                ICMP(type=11) / packet[IP] for packet in capture]
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Client side - verify ICMP type 11 packets
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in_with_icmp_errors(capture, self.pg0)
+
+    def test_dynamic_icmp_errors_out2in_ttl_2(self):
+        """ NAT44EI handling of error responses to server packets with TTL=2
+        """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # Client side - create sessions
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Server side - generate traffic
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+        pkts = self.create_stream_out(self.pg1, ttl=2)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Client side - simulate ICMP type 11 response
+        capture = self.pg0.get_capture(len(pkts))
+        pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                ICMP(type=11) / packet[IP] for packet in capture]
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Server side - verify ICMP type 11 packets
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out_with_icmp_errors(capture)
+
+    def test_ping_out_interface_from_outside(self):
+        """ NAT44EI ping out interface from outside network """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) /
+             ICMP(id=self.icmp_id_out, type='echo-request'))
+        pkts = [p]
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        packet = capture[0]
+        try:
+            self.assertEqual(packet[IP].src, self.pg1.local_ip4)
+            self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+            self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            self.assertEqual(packet[ICMP].type, 0)  # echo reply
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet "
+                                  "(outside network):", packet))
+            raise
+
+    def test_ping_internal_host_from_outside(self):
+        """ NAT44EI ping internal host from outside network """
+
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # out2in
+        pkt = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+               IP(src=self.pg1.remote_ip4, dst=self.nat_addr, ttl=64) /
+               ICMP(id=self.icmp_id_out, type='echo-request'))
+        self.pg1.add_stream(pkt)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        self.verify_capture_in(capture, self.pg0)
+        self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
+
+        # in2out
+        pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) /
+               ICMP(id=self.icmp_id_in, type='echo-reply'))
+        self.pg0.add_stream(pkt)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        self.verify_capture_out(capture, same_port=True)
+        self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
+
+    def test_forwarding(self):
+        """ NAT44EI forwarding test """
+
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_forwarding_enable_disable(enable=1)
+
+        real_ip = self.pg0.remote_ip4
+        alias_ip = self.nat_addr
+        flags = self.config_flags.NAT44_EI_ADDR_ONLY_MAPPING
+        self.vapi.nat44_ei_add_del_static_mapping(
+            is_add=1, local_ip_address=real_ip,
+            external_ip_address=alias_ip,
+            external_sw_if_index=0xFFFFFFFF,
+            flags=flags)
+
+        try:
+            # static mapping match
+
+            pkts = self.create_stream_out(self.pg1)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+            pkts = self.create_stream_in(self.pg0, self.pg1)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out(capture, same_port=True)
+
+            # no static mapping match
+
+            host0 = self.pg0.remote_hosts[0]
+            self.pg0.remote_hosts[0] = self.pg0.remote_hosts[1]
+            try:
+                pkts = self.create_stream_out(self.pg1,
+                                              dst_ip=self.pg0.remote_ip4,
+                                              use_inside_ports=True)
+                self.pg1.add_stream(pkts)
+                self.pg_enable_capture(self.pg_interfaces)
+                self.pg_start()
+                capture = self.pg0.get_capture(len(pkts))
+                self.verify_capture_in(capture, self.pg0)
+
+                pkts = self.create_stream_in(self.pg0, self.pg1)
+                self.pg0.add_stream(pkts)
+                self.pg_enable_capture(self.pg_interfaces)
+                self.pg_start()
+                capture = self.pg1.get_capture(len(pkts))
+                self.verify_capture_out(capture, nat_ip=self.pg0.remote_ip4,
+                                        same_port=True)
+            finally:
+                self.pg0.remote_hosts[0] = host0
+
+        finally:
+            self.vapi.nat44_ei_forwarding_enable_disable(enable=0)
+            flags = self.config_flags.NAT44_EI_ADDR_ONLY_MAPPING
+            self.vapi.nat44_ei_add_del_static_mapping(
+                is_add=0,
+                local_ip_address=real_ip,
+                external_ip_address=alias_ip,
+                external_sw_if_index=0xFFFFFFFF,
+                flags=flags)
+
+    def test_static_in(self):
+        """ NAT44EI 1:1 NAT initialized from inside network """
+
+        nat_ip = "10.0.0.10"
+        self.tcp_port_out = 6303
+        self.udp_port_out = 6304
+        self.icmp_id_out = 6305
+
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        sm = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(len(sm), 1)
+        self.assertEqual(sm[0].tag, '')
+        self.assertEqual(sm[0].protocol, 0)
+        self.assertEqual(sm[0].local_port, 0)
+        self.assertEqual(sm[0].external_port, 0)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip, True)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1, nat_ip)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+    def test_static_out(self):
+        """ NAT44EI 1:1 NAT initialized from outside network """
+
+        nat_ip = "10.0.0.20"
+        self.tcp_port_out = 6303
+        self.udp_port_out = 6304
+        self.icmp_id_out = 6305
+        tag = "testTAG"
+
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip, tag=tag)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        sm = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(len(sm), 1)
+        self.assertEqual(sm[0].tag, tag)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1, nat_ip)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip, True)
+
+    def test_static_with_port_in(self):
+        """ NAT44EI 1:1 NAPT initialized from inside network """
+
+        self.tcp_port_out = 3606
+        self.udp_port_out = 3607
+        self.icmp_id_out = 3608
+
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+    def test_static_with_port_out(self):
+        """ NAT44EI 1:1 NAPT initialized from outside network """
+
+        self.tcp_port_out = 30606
+        self.udp_port_out = 30607
+        self.icmp_id_out = 30608
+
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+    def test_static_vrf_aware(self):
+        """ NAT44EI 1:1 NAT VRF awareness """
+
+        nat_ip1 = "10.0.0.30"
+        nat_ip2 = "10.0.0.40"
+        self.tcp_port_out = 6303
+        self.udp_port_out = 6304
+        self.icmp_id_out = 6305
+
+        self.nat44_add_static_mapping(self.pg4.remote_ip4, nat_ip1,
+                                      vrf_id=10)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip2,
+                                      vrf_id=10)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg3.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg4.sw_if_index,
+            flags=flags, is_add=1)
+
+        # inside interface VRF match NAT44EI static mapping VRF
+        pkts = self.create_stream_in(self.pg4, self.pg3)
+        self.pg4.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip1, True)
+
+        # inside interface VRF don't match NAT44EI static mapping VRF (packets
+        # are dropped)
+        pkts = self.create_stream_in(self.pg0, self.pg3)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg3.assert_nothing_captured()
+
+    def test_dynamic_to_static(self):
+        """ NAT44EI Switch from dynamic translation to 1:1NAT """
+        nat_ip = "10.0.0.10"
+        self.tcp_port_out = 6303
+        self.udp_port_out = 6304
+        self.icmp_id_out = 6305
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # dynamic
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # 1:1NAT
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        sessions = self.vapi.nat44_ei_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions), 0)
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip, True)
+
+    def test_identity_nat(self):
+        """ NAT44EI Identity NAT """
+        flags = self.config_flags.NAT44_EI_ADDR_ONLY_MAPPING
+        self.vapi.nat44_ei_add_del_identity_mapping(
+            ip_address=self.pg0.remote_ip4, sw_if_index=0xFFFFFFFF,
+            flags=flags, is_add=1)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+             TCP(sport=12345, dport=56789))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(ip.src, self.pg1.remote_ip4)
+            self.assertEqual(tcp.dport, 56789)
+            self.assertEqual(tcp.sport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        sessions = self.vapi.nat44_ei_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(len(sessions), 0)
+        flags = self.config_flags.NAT44_EI_ADDR_ONLY_MAPPING
+        self.vapi.nat44_ei_add_del_identity_mapping(
+            ip_address=self.pg0.remote_ip4, sw_if_index=0xFFFFFFFF,
+            flags=flags, vrf_id=1, is_add=1)
+        identity_mappings = self.vapi.nat44_ei_identity_mapping_dump()
+        self.assertEqual(len(identity_mappings), 2)
+
+    def test_multiple_inside_interfaces(self):
+        """ NAT44EI multiple non-overlapping address space inside interfaces
+        """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg3.sw_if_index,
+            is_add=1)
+
+        # between two NAT44EI inside interfaces (no translation)
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_no_translation(capture, self.pg0, self.pg1)
+
+        # from inside to interface without translation
+        pkts = self.create_stream_in(self.pg0, self.pg2)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg2.get_capture(len(pkts))
+        self.verify_capture_no_translation(capture, self.pg0, self.pg2)
+
+        # in2out 1st interface
+        pkts = self.create_stream_in(self.pg0, self.pg3)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in 1st interface
+        pkts = self.create_stream_out(self.pg3)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # in2out 2nd interface
+        pkts = self.create_stream_in(self.pg1, self.pg3)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in 2nd interface
+        pkts = self.create_stream_out(self.pg3)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg1)
+
+    def test_inside_overlapping_interfaces(self):
+        """ NAT44EI multiple inside interfaces with overlapping address space
+        """
+
+        static_nat_ip = "10.0.0.10"
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg3.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg4.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg5.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg6.sw_if_index,
+            flags=flags, is_add=1)
+        self.nat44_add_static_mapping(self.pg6.remote_ip4, static_nat_ip,
+                                      vrf_id=20)
+
+        # between NAT44EI inside interfaces with same VRF (no translation)
+        pkts = self.create_stream_in(self.pg4, self.pg5)
+        self.pg4.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(len(pkts))
+        self.verify_capture_no_translation(capture, self.pg4, self.pg5)
+
+        # between NAT44EI inside interfaces with different VRF (hairpinning)
+        p = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+             IP(src=self.pg4.remote_ip4, dst=static_nat_ip) /
+             TCP(sport=1234, dport=5678))
+        self.pg4.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, self.pg6.remote_ip4)
+            self.assertNotEqual(tcp.sport, 1234)
+            self.assertEqual(tcp.dport, 5678)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # in2out 1st interface
+        pkts = self.create_stream_in(self.pg4, self.pg3)
+        self.pg4.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in 1st interface
+        pkts = self.create_stream_out(self.pg3)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg4.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg4)
+
+        # in2out 2nd interface
+        pkts = self.create_stream_in(self.pg5, self.pg3)
+        self.pg5.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in 2nd interface
+        pkts = self.create_stream_out(self.pg3)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg5.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg5)
+
+        # pg5 session dump
+        addresses = self.vapi.nat44_ei_address_dump()
+        self.assertEqual(len(addresses), 1)
+        sessions = self.vapi.nat44_ei_user_session_dump(
+            self.pg5.remote_ip4, 10)
+        self.assertEqual(len(sessions), 3)
+        for session in sessions:
+            self.assertFalse(session.flags &
+                             self.config_flags.NAT44_EI_STATIC_MAPPING)
+            self.assertEqual(str(session.inside_ip_address),
+                             self.pg5.remote_ip4)
+            self.assertEqual(session.outside_ip_address,
+                             addresses[0].ip_address)
+        self.assertEqual(sessions[0].protocol, IP_PROTOS.tcp)
+        self.assertEqual(sessions[1].protocol, IP_PROTOS.udp)
+        self.assertEqual(sessions[2].protocol, IP_PROTOS.icmp)
+        self.assertEqual(sessions[0].inside_port, self.tcp_port_in)
+        self.assertEqual(sessions[1].inside_port, self.udp_port_in)
+        self.assertEqual(sessions[2].inside_port, self.icmp_id_in)
+        self.assertEqual(sessions[0].outside_port, self.tcp_port_out)
+        self.assertEqual(sessions[1].outside_port, self.udp_port_out)
+        self.assertEqual(sessions[2].outside_port, self.icmp_id_out)
+
+        # in2out 3rd interface
+        pkts = self.create_stream_in(self.pg6, self.pg3)
+        self.pg6.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture, static_nat_ip, True)
+
+        # out2in 3rd interface
+        pkts = self.create_stream_out(self.pg3, static_nat_ip)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg6)
+
+        # general user and session dump verifications
+        users = self.vapi.nat44_ei_user_dump()
+        self.assertGreaterEqual(len(users), 3)
+        addresses = self.vapi.nat44_ei_address_dump()
+        self.assertEqual(len(addresses), 1)
+        for user in users:
+            sessions = self.vapi.nat44_ei_user_session_dump(user.ip_address,
+                                                            user.vrf_id)
+            for session in sessions:
+                self.assertEqual(user.ip_address, session.inside_ip_address)
+                self.assertTrue(session.total_bytes > session.total_pkts > 0)
+                self.assertTrue(session.protocol in
+                                [IP_PROTOS.tcp, IP_PROTOS.udp,
+                                 IP_PROTOS.icmp])
+
+        # pg4 session dump
+        sessions = self.vapi.nat44_ei_user_session_dump(
+            self.pg4.remote_ip4, 10)
+        self.assertGreaterEqual(len(sessions), 4)
+        for session in sessions:
+            self.assertFalse(
+                session.flags & self.config_flags.NAT44_EI_STATIC_MAPPING)
+            self.assertEqual(str(session.inside_ip_address),
+                             self.pg4.remote_ip4)
+            self.assertEqual(session.outside_ip_address,
+                             addresses[0].ip_address)
+
+        # pg6 session dump
+        sessions = self.vapi.nat44_ei_user_session_dump(
+            self.pg6.remote_ip4, 20)
+        self.assertGreaterEqual(len(sessions), 3)
+        for session in sessions:
+            self.assertTrue(
+                session.flags & self.config_flags.NAT44_EI_STATIC_MAPPING)
+            self.assertEqual(str(session.inside_ip_address),
+                             self.pg6.remote_ip4)
+            self.assertEqual(str(session.outside_ip_address),
+                             static_nat_ip)
+            self.assertTrue(session.inside_port in
+                            [self.tcp_port_in, self.udp_port_in,
+                             self.icmp_id_in])
+
+    def test_hairpinning(self):
+        """ NAT44EI hairpinning - 1:1 NAPT """
+
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        host_in_port = 1234
+        host_out_port = 0
+        server_in_port = 5678
+        server_out_port = 8765
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # add static mapping for server
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
+
+        cnt = self.statistics['/nat44-ei/hairpinning']
+        # send packet from host to server
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=self.nat_addr) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, server.ip4)
+            self.assertNotEqual(tcp.sport, host_in_port)
+            self.assertEqual(tcp.dport, server_in_port)
+            self.assert_packet_checksums_valid(p)
+            host_out_port = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[:, if_idx].sum() - cnt[:, if_idx].sum(), 1)
+
+        # send reply from server to host
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.nat_addr) /
+             TCP(sport=server_in_port, dport=host_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, host.ip4)
+            self.assertEqual(tcp.sport, server_out_port)
+            self.assertEqual(tcp.dport, host_in_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[:, if_idx].sum() - cnt[:, if_idx].sum(),
+                         2+(1 if self.vpp_worker_count > 0 else 0))
+
+    def test_hairpinning2(self):
+        """ NAT44EI hairpinning - 1:1 NAT"""
+
+        server1_nat_ip = "10.0.0.10"
+        server2_nat_ip = "10.0.0.11"
+        host = self.pg0.remote_hosts[0]
+        server1 = self.pg0.remote_hosts[1]
+        server2 = self.pg0.remote_hosts[2]
+        server_tcp_port = 22
+        server_udp_port = 20
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # add static mapping for servers
+        self.nat44_add_static_mapping(server1.ip4, server1_nat_ip)
+        self.nat44_add_static_mapping(server2.ip4, server2_nat_ip)
+
+        # host to server1
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             TCP(sport=self.tcp_port_in, dport=server_tcp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             UDP(sport=self.udp_port_in, dport=server_udp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, self.nat_addr)
+                self.assertEqual(packet[IP].dst, server1.ip4)
+                if packet.haslayer(TCP):
+                    self.assertNotEqual(packet[TCP].sport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].dport, server_tcp_port)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertNotEqual(packet[UDP].sport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].dport, server_udp_port)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    self.assertNotEqual(packet[ICMP].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP].id
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server1 to host
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             TCP(sport=server_tcp_port, dport=self.tcp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             UDP(sport=server_udp_port, dport=self.udp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             ICMP(id=self.icmp_id_out, type='echo-reply'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server1_nat_ip)
+                self.assertEqual(packet[IP].dst, host.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].sport, server_tcp_port)
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].sport, server_udp_port)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server2 to server1
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             TCP(sport=self.tcp_port_in, dport=server_tcp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             UDP(sport=self.udp_port_in, dport=server_udp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server2_nat_ip)
+                self.assertEqual(packet[IP].dst, server1.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].sport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].dport, server_tcp_port)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].sport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].dport, server_udp_port)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP].id
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server1 to server2
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             TCP(sport=server_tcp_port, dport=self.tcp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             UDP(sport=server_udp_port, dport=self.udp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             ICMP(id=self.icmp_id_out, type='echo-reply'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server1_nat_ip)
+                self.assertEqual(packet[IP].dst, server2.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].sport, server_tcp_port)
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].sport, server_udp_port)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+    def test_hairpinning_avoid_inf_loop(self):
+        """ NAT44EI hairpinning - 1:1 NAPT avoid infinite loop """
+
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        host_in_port = 1234
+        host_out_port = 0
+        server_in_port = 5678
+        server_out_port = 8765
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # add static mapping for server
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
+
+        # add another static mapping that maps pg0.local_ip4 address to itself
+        self.nat44_add_static_mapping(self.pg0.local_ip4, self.pg0.local_ip4)
+
+        # send packet from host to VPP (the packet should get dropped)
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=self.pg0.local_ip4) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        # Here VPP used to crash due to an infinite loop
+
+        cnt = self.statistics['/nat44-ei/hairpinning']
+        # send packet from host to server
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=self.nat_addr) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, server.ip4)
+            self.assertNotEqual(tcp.sport, host_in_port)
+            self.assertEqual(tcp.dport, server_in_port)
+            self.assert_packet_checksums_valid(p)
+            host_out_port = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[:, if_idx].sum() - cnt[:, if_idx].sum(), 1)
+
+        # send reply from server to host
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.nat_addr) /
+             TCP(sport=server_in_port, dport=host_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, host.ip4)
+            self.assertEqual(tcp.sport, server_out_port)
+            self.assertEqual(tcp.dport, host_in_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[:, if_idx].sum() - cnt[:, if_idx].sum(),
+                         2+(1 if self.vpp_worker_count > 0 else 0))
+
+    def test_interface_addr(self):
+        """ NAT44EI acquire addresses from interface """
+        self.vapi.nat44_ei_add_del_interface_addr(
+            is_add=1,
+            sw_if_index=self.pg7.sw_if_index)
+
+        # no address in NAT pool
+        addresses = self.vapi.nat44_ei_address_dump()
+        self.assertEqual(0, len(addresses))
+
+        # configure interface address and check NAT address pool
+        self.pg7.config_ip4()
+        addresses = self.vapi.nat44_ei_address_dump()
+        self.assertEqual(1, len(addresses))
+        self.assertEqual(str(addresses[0].ip_address), self.pg7.local_ip4)
+
+        # remove interface address and check NAT address pool
+        self.pg7.unconfig_ip4()
+        addresses = self.vapi.nat44_ei_address_dump()
+        self.assertEqual(0, len(addresses))
+
+    def test_interface_addr_static_mapping(self):
+        """ NAT44EI Static mapping with addresses from interface """
+        tag = "testTAG"
+
+        self.vapi.nat44_ei_add_del_interface_addr(
+            is_add=1,
+            sw_if_index=self.pg7.sw_if_index)
+        self.nat44_add_static_mapping(
+            '1.2.3.4',
+            external_sw_if_index=self.pg7.sw_if_index,
+            tag=tag)
+
+        # static mappings with external interface
+        static_mappings = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(1, len(static_mappings))
+        self.assertEqual(self.pg7.sw_if_index,
+                         static_mappings[0].external_sw_if_index)
+        self.assertEqual(static_mappings[0].tag, tag)
+
+        # configure interface address and check static mappings
+        self.pg7.config_ip4()
+        static_mappings = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(2, len(static_mappings))
+        resolved = False
+        for sm in static_mappings:
+            if sm.external_sw_if_index == 0xFFFFFFFF:
+                self.assertEqual(str(sm.external_ip_address),
+                                 self.pg7.local_ip4)
+                self.assertEqual(sm.tag, tag)
+                resolved = True
+        self.assertTrue(resolved)
+
+        # remove interface address and check static mappings
+        self.pg7.unconfig_ip4()
+        static_mappings = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(1, len(static_mappings))
+        self.assertEqual(self.pg7.sw_if_index,
+                         static_mappings[0].external_sw_if_index)
+        self.assertEqual(static_mappings[0].tag, tag)
+
+        # configure interface address again and check static mappings
+        self.pg7.config_ip4()
+        static_mappings = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(2, len(static_mappings))
+        resolved = False
+        for sm in static_mappings:
+            if sm.external_sw_if_index == 0xFFFFFFFF:
+                self.assertEqual(str(sm.external_ip_address),
+                                 self.pg7.local_ip4)
+                self.assertEqual(sm.tag, tag)
+                resolved = True
+        self.assertTrue(resolved)
+
+        # remove static mapping
+        self.nat44_add_static_mapping(
+            '1.2.3.4',
+            external_sw_if_index=self.pg7.sw_if_index,
+            tag=tag,
+            is_add=0)
+        static_mappings = self.vapi.nat44_ei_static_mapping_dump()
+        self.assertEqual(0, len(static_mappings))
+
+    def test_interface_addr_identity_nat(self):
+        """ NAT44EI Identity NAT with addresses from interface """
+
+        port = 53053
+        self.vapi.nat44_ei_add_del_interface_addr(
+            is_add=1,
+            sw_if_index=self.pg7.sw_if_index)
+        self.vapi.nat44_ei_add_del_identity_mapping(
+            ip_address=b'0',
+            sw_if_index=self.pg7.sw_if_index,
+            port=port,
+            protocol=IP_PROTOS.tcp,
+            is_add=1)
+
+        # identity mappings with external interface
+        identity_mappings = self.vapi.nat44_ei_identity_mapping_dump()
+        self.assertEqual(1, len(identity_mappings))
+        self.assertEqual(self.pg7.sw_if_index,
+                         identity_mappings[0].sw_if_index)
+
+        # configure interface address and check identity mappings
+        self.pg7.config_ip4()
+        identity_mappings = self.vapi.nat44_ei_identity_mapping_dump()
+        resolved = False
+        self.assertEqual(2, len(identity_mappings))
+        for sm in identity_mappings:
+            if sm.sw_if_index == 0xFFFFFFFF:
+                self.assertEqual(str(identity_mappings[0].ip_address),
+                                 self.pg7.local_ip4)
+                self.assertEqual(port, identity_mappings[0].port)
+                self.assertEqual(IP_PROTOS.tcp, identity_mappings[0].protocol)
+                resolved = True
+        self.assertTrue(resolved)
+
+        # remove interface address and check identity mappings
+        self.pg7.unconfig_ip4()
+        identity_mappings = self.vapi.nat44_ei_identity_mapping_dump()
+        self.assertEqual(1, len(identity_mappings))
+        self.assertEqual(self.pg7.sw_if_index,
+                         identity_mappings[0].sw_if_index)
+
+    def test_ipfix_nat44_sess(self):
+        """ NAT44EI IPFIX logging NAT44EI session created/deleted """
+        self.ipfix_domain_id = 10
+        self.ipfix_src_port = 20202
+        collector_port = 30303
+        bind_layers(UDP, IPFIX, dport=30303)
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+                                     src_address=self.pg3.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10,
+                                     collector_port=collector_port)
+        self.vapi.nat44_ei_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                                src_port=self.ipfix_src_port,
+                                                enable=1)
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+        self.nat44_add_address(self.nat_addr, is_add=0)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(7)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, collector_port)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_nat44_ses(data)
+
+    def test_ipfix_addr_exhausted(self):
+        """ NAT44EI IPFIX logging NAT addresses exhausted """
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+                                     src_address=self.pg3.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10)
+        self.vapi.nat44_ei_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                                src_port=self.ipfix_src_port,
+                                                enable=1)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=3025))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sleep(1)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(7)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_addr_exhausted(data)
+
+    def test_ipfix_max_sessions(self):
+        """ NAT44EI IPFIX logging maximum session entries exceeded """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        max_sessions_per_thread = self.max_translations
+        max_sessions = max(1, self.vpp_worker_count) * max_sessions_per_thread
+
+        pkts = []
+        for i in range(0, max_sessions):
+            src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=src, dst=self.pg1.remote_ip4) /
+                 TCP(sport=1025))
+            pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.pg1.get_capture(max_sessions)
+        self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+                                     src_address=self.pg3.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10)
+        self.vapi.nat44_ei_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                                src_port=self.ipfix_src_port,
+                                                enable=1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=1025))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sleep(1)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(7)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_max_sessions(data, max_sessions_per_thread)
+
+    def test_syslog_apmap(self):
+        """ NAT44EI syslog address and port mapping creation and deletion """
+        self.vapi.syslog_set_filter(
+            self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
+        self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        self.tcp_port_out = capture[0][TCP].sport
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_apmap(capture[0][Raw].load)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.nat44_add_address(self.nat_addr, is_add=0)
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_apmap(capture[0][Raw].load, False)
+
+    def test_pool_addr_fib(self):
+        """ NAT44EI add pool addresses to FIB """
+        static_addr = '10.0.0.10'
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, static_addr)
+
+        # NAT44EI address
+        p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
+                 psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        self.assertTrue(capture[0].haslayer(ARP))
+        self.assertTrue(capture[0][ARP].op, ARP.is_at)
+
+        # 1:1 NAT address
+        p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
+             ARP(op=ARP.who_has, pdst=static_addr,
+                 psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        self.assertTrue(capture[0].haslayer(ARP))
+        self.assertTrue(capture[0][ARP].op, ARP.is_at)
+
+        # send ARP to non-NAT44EI interface
+        p = (Ether(src=self.pg2.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
+                 psrc=self.pg2.remote_ip4, hwsrc=self.pg2.remote_mac))
+        self.pg2.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        # remove addresses and verify
+        self.nat44_add_address(self.nat_addr, is_add=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, static_addr,
+                                      is_add=0)
+
+        p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
+                 psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+        p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
+             ARP(op=ARP.who_has, pdst=static_addr,
+                 psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+
+    def test_vrf_mode(self):
+        """ NAT44EI tenant VRF aware address pool mode """
+
+        vrf_id1 = 1
+        vrf_id2 = 2
+        nat_ip1 = "10.0.0.10"
+        nat_ip2 = "10.0.0.11"
+
+        self.pg0.unconfig_ip4()
+        self.pg1.unconfig_ip4()
+        self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id1})
+        self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id2})
+        self.pg0.set_table_ip4(vrf_id1)
+        self.pg1.set_table_ip4(vrf_id2)
+        self.pg0.config_ip4()
+        self.pg1.config_ip4()
+        self.pg0.resolve_arp()
+        self.pg1.resolve_arp()
+
+        self.nat44_add_address(nat_ip1, vrf_id=vrf_id1)
+        self.nat44_add_address(nat_ip2, vrf_id=vrf_id2)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg2.sw_if_index,
+            is_add=1)
+
+        try:
+            # first VRF
+            pkts = self.create_stream_in(self.pg0, self.pg2)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg2.get_capture(len(pkts))
+            self.verify_capture_out(capture, nat_ip1)
+
+            # second VRF
+            pkts = self.create_stream_in(self.pg1, self.pg2)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg2.get_capture(len(pkts))
+            self.verify_capture_out(capture, nat_ip2)
+
+        finally:
+            self.pg0.unconfig_ip4()
+            self.pg1.unconfig_ip4()
+            self.pg0.set_table_ip4(0)
+            self.pg1.set_table_ip4(0)
+            self.pg0.config_ip4()
+            self.pg1.config_ip4()
+            self.pg0.resolve_arp()
+            self.pg1.resolve_arp()
+            self.vapi.ip_table_add_del(is_add=0, table={'table_id': vrf_id1})
+            self.vapi.ip_table_add_del(is_add=0, table={'table_id': vrf_id2})
+
+    def test_vrf_feature_independent(self):
+        """ NAT44EI tenant VRF independent address pool mode """
+
+        nat_ip1 = "10.0.0.10"
+        nat_ip2 = "10.0.0.11"
+
+        self.nat44_add_address(nat_ip1)
+        self.nat44_add_address(nat_ip2, vrf_id=99)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg2.sw_if_index,
+            is_add=1)
+
+        # first VRF
+        pkts = self.create_stream_in(self.pg0, self.pg2)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg2.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip1)
+
+        # second VRF
+        pkts = self.create_stream_in(self.pg1, self.pg2)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg2.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip1)
+
+    def test_dynamic_ipless_interfaces(self):
+        """ NAT44EI interfaces without configured IP address """
+        self.create_routes_and_neigbors()
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg7.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg8.sw_if_index,
+            is_add=1)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg7, self.pg8)
+        self.pg7.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg8.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg8, self.nat_addr)
+        self.pg8.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg7.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg7)
+
+    def test_static_ipless_interfaces(self):
+        """ NAT44EI interfaces without configured IP address - 1:1 NAT """
+
+        self.create_routes_and_neigbors()
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg7.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg8.sw_if_index,
+            is_add=1)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg8)
+        self.pg8.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg7.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg7)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg7, self.pg8)
+        self.pg7.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg8.get_capture(len(pkts))
+        self.verify_capture_out(capture, self.nat_addr, True)
+
+    def test_static_with_port_ipless_interfaces(self):
+        """ NAT44EI interfaces without configured IP address - 1:1 NAPT """
+
+        self.tcp_port_out = 30606
+        self.udp_port_out = 30607
+        self.icmp_id_out = 30608
+
+        self.create_routes_and_neigbors()
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg7.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg8.sw_if_index,
+            is_add=1)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg8)
+        self.pg8.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg7.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg7)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg7, self.pg8)
+        self.pg7.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg8.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+    def test_static_unknown_proto(self):
+        """ NAT44EI 1:1 translate packet with unknown protocol """
+        nat_ip = "10.0.0.10"
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # in2out
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, nat_ip)
+            self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # out2in
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=nat_ip) /
+             GRE() /
+             IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, self.pg1.remote_ip4)
+            self.assertEqual(packet[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_hairpinning_static_unknown_proto(self):
+        """ NAT44EI 1:1 translate packet with unknown protocol - hairpinning
+        """
+
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+
+        host_nat_ip = "10.0.0.10"
+        server_nat_ip = "10.0.0.11"
+
+        self.nat44_add_static_mapping(host.ip4, host_nat_ip)
+        self.nat44_add_static_mapping(server.ip4, server_nat_ip)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # host to server
+        p = (Ether(dst=self.pg0.local_mac, src=host.mac) /
+             IP(src=host.ip4, dst=server_nat_ip) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, host_nat_ip)
+            self.assertEqual(packet[IP].dst, server.ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # server to host
+        p = (Ether(dst=self.pg0.local_mac, src=server.mac) /
+             IP(src=server.ip4, dst=host_nat_ip) /
+             GRE() /
+             IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, server_nat_ip)
+            self.assertEqual(packet[IP].dst, host.ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_output_feature(self):
+        """ NAT44EI output feature (in2out postrouting) """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1, flags=flags,
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1, flags=flags,
+            sw_if_index=self.pg1.sw_if_index)
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1,
+            sw_if_index=self.pg3.sw_if_index)
+
+        # in2out
+        pkts = self.create_stream_in(self.pg0, self.pg3)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg3)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+        # from non-NAT interface to NAT inside interface
+        pkts = self.create_stream_in(self.pg2, self.pg0)
+        self.pg2.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_no_translation(capture, self.pg2, self.pg0)
+
+    def test_output_feature_vrf_aware(self):
+        """ NAT44EI output feature VRF aware (in2out postrouting) """
+        nat_ip_vrf10 = "10.0.0.10"
+        nat_ip_vrf20 = "10.0.0.20"
+
+        r1 = VppIpRoute(self, self.pg3.remote_ip4, 32,
+                        [VppRoutePath(self.pg3.remote_ip4,
+                                      self.pg3.sw_if_index)],
+                        table_id=10)
+        r2 = VppIpRoute(self, self.pg3.remote_ip4, 32,
+                        [VppRoutePath(self.pg3.remote_ip4,
+                                      self.pg3.sw_if_index)],
+                        table_id=20)
+        r1.add_vpp_config()
+        r2.add_vpp_config()
+
+        self.nat44_add_address(nat_ip_vrf10, vrf_id=10)
+        self.nat44_add_address(nat_ip_vrf20, vrf_id=20)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1, flags=flags,
+            sw_if_index=self.pg4.sw_if_index)
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1, flags=flags,
+            sw_if_index=self.pg6.sw_if_index)
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1,
+            sw_if_index=self.pg3.sw_if_index)
+
+        # in2out VRF 10
+        pkts = self.create_stream_in(self.pg4, self.pg3)
+        self.pg4.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=nat_ip_vrf10)
+
+        # out2in VRF 10
+        pkts = self.create_stream_out(self.pg3, dst_ip=nat_ip_vrf10)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg4.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg4)
+
+        # in2out VRF 20
+        pkts = self.create_stream_in(self.pg6, self.pg3)
+        self.pg6.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=nat_ip_vrf20)
+
+        # out2in VRF 20
+        pkts = self.create_stream_out(self.pg3, dst_ip=nat_ip_vrf20)
+        self.pg3.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg6.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg6)
+
+    def test_output_feature_hairpinning(self):
+        """ NAT44EI output feature hairpinning (in2out postrouting) """
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        host_in_port = 1234
+        host_out_port = 0
+        server_in_port = 5678
+        server_out_port = 8765
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1, flags=flags,
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat44_ei_interface_add_del_output_feature(
+            is_add=1,
+            sw_if_index=self.pg1.sw_if_index)
+
+        # add static mapping for server
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
+
+        # send packet from host to server
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=self.nat_addr) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, server.ip4)
+            self.assertNotEqual(tcp.sport, host_in_port)
+            self.assertEqual(tcp.dport, server_in_port)
+            self.assert_packet_checksums_valid(p)
+            host_out_port = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # send reply from server to host
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.nat_addr) /
+             TCP(sport=server_in_port, dport=host_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, host.ip4)
+            self.assertEqual(tcp.sport, server_out_port)
+            self.assertEqual(tcp.dport, host_in_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_one_armed_nat44(self):
+        """ NAT44EI One armed NAT """
+        remote_host = self.pg9.remote_hosts[0]
+        local_host = self.pg9.remote_hosts[1]
+        external_port = 0
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg9.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg9.sw_if_index,
+            flags=flags, is_add=1)
+
+        # in2out
+        p = (Ether(src=self.pg9.remote_mac, dst=self.pg9.local_mac) /
+             IP(src=local_host.ip4, dst=remote_host.ip4) /
+             TCP(sport=12345, dport=80))
+        self.pg9.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg9.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, remote_host.ip4)
+            self.assertNotEqual(tcp.sport, 12345)
+            external_port = tcp.sport
+            self.assertEqual(tcp.dport, 80)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # out2in
+        p = (Ether(src=self.pg9.remote_mac, dst=self.pg9.local_mac) /
+             IP(src=remote_host.ip4, dst=self.nat_addr) /
+             TCP(sport=80, dport=external_port))
+        self.pg9.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg9.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, remote_host.ip4)
+            self.assertEqual(ip.dst, local_host.ip4)
+            self.assertEqual(tcp.sport, 80)
+            self.assertEqual(tcp.dport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        if self.vpp_worker_count > 1:
+            node = "nat44-ei-handoff-classify"
+        else:
+            node = "nat44-ei-classify"
+
+        err = self.statistics.get_err_counter('/err/%s/next in2out' % node)
+        self.assertEqual(err, 1)
+        err = self.statistics.get_err_counter('/err/%s/next out2in' % node)
+        self.assertEqual(err, 1)
+
+    def test_del_session(self):
+        """ NAT44EI delete session """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(len(pkts))
+
+        sessions = self.vapi.nat44_ei_user_session_dump(self.pg0.remote_ip4, 0)
+        nsessions = len(sessions)
+
+        self.vapi.nat44_ei_del_session(
+            address=sessions[0].inside_ip_address,
+            port=sessions[0].inside_port,
+            protocol=sessions[0].protocol,
+            flags=self.config_flags.NAT44_EI_IF_INSIDE)
+
+        self.vapi.nat44_ei_del_session(
+            address=sessions[1].outside_ip_address,
+            port=sessions[1].outside_port,
+            protocol=sessions[1].protocol)
+
+        sessions = self.vapi.nat44_ei_user_session_dump(self.pg0.remote_ip4, 0)
+        self.assertEqual(nsessions - len(sessions), 2)
+
+        self.vapi.nat44_ei_del_session(
+            address=sessions[0].inside_ip_address,
+            port=sessions[0].inside_port,
+            protocol=sessions[0].protocol,
+            flags=self.config_flags.NAT44_EI_IF_INSIDE)
+
+        self.verify_no_nat44_user()
+
+    def test_frag_in_order(self):
+        """ NAT44EI translate fragments arriving in order """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        self.frag_in_order(proto=IP_PROTOS.tcp)
+        self.frag_in_order(proto=IP_PROTOS.udp)
+        self.frag_in_order(proto=IP_PROTOS.icmp)
+
+    def test_frag_forwarding(self):
+        """ NAT44EI forwarding fragment test """
+        self.vapi.nat44_ei_add_del_interface_addr(
+            is_add=1,
+            sw_if_index=self.pg1.sw_if_index)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_forwarding_enable_disable(enable=1)
+
+        data = b"A" * 16 + b"B" * 16 + b"C" * 3
+        pkts = self.create_stream_frag(self.pg1,
+                                       self.pg0.remote_ip4,
+                                       4789,
+                                       4789,
+                                       data,
+                                       proto=IP_PROTOS.udp)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.pg1.remote_ip4,
+                                        self.pg0.remote_ip4)
+        self.assertEqual(p[UDP].sport, 4789)
+        self.assertEqual(p[UDP].dport, 4789)
+        self.assertEqual(data, p[Raw].load)
+
+    def test_reass_hairpinning(self):
+        """ NAT44EI fragments hairpinning """
+
+        server_addr = self.pg0.remote_hosts[1].ip4
+        host_in_port = random.randint(1025, 65535)
+        server_in_port = random.randint(1025, 65535)
+        server_out_port = random.randint(1025, 65535)
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        # add static mapping for server
+        self.nat44_add_static_mapping(server_addr, self.nat_addr,
+                                      server_in_port,
+                                      server_out_port,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(server_addr, self.nat_addr,
+                                      server_in_port,
+                                      server_out_port,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(server_addr, self.nat_addr)
+
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.tcp)
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.udp)
+        self.reass_hairpinning(server_addr, server_in_port, server_out_port,
+                               host_in_port, proto=IP_PROTOS.icmp)
+
+    def test_frag_out_of_order(self):
+        """ NAT44EI translate fragments arriving out of order """
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        self.frag_out_of_order(proto=IP_PROTOS.tcp)
+        self.frag_out_of_order(proto=IP_PROTOS.udp)
+        self.frag_out_of_order(proto=IP_PROTOS.icmp)
+
+    def test_port_restricted(self):
+        """ NAT44EI Port restricted NAT44EI (MAP-E CE) """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_set_addr_and_port_alloc_alg(alg=1,
+                                                       psid_offset=6,
+                                                       psid_length=6,
+                                                       psid=10)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=4567, dport=22))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.dst, self.pg1.remote_ip4)
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(tcp.dport, 22)
+            self.assertNotEqual(tcp.sport, 4567)
+            self.assertEqual((tcp.sport >> 6) & 63, 10)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_port_range(self):
+        """ NAT44EI External address port range """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_set_addr_and_port_alloc_alg(alg=2,
+                                                       start_port=1025,
+                                                       end_port=1027)
+
+        pkts = []
+        for port in range(0, 5):
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                 TCP(sport=1125 + port))
+            pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(3)
+        for p in capture:
+            tcp = p[TCP]
+            self.assertGreaterEqual(tcp.sport, 1025)
+            self.assertLessEqual(tcp.sport, 1027)
+
+    def test_multiple_outside_vrf(self):
+        """ NAT44EI Multiple outside VRF """
+        vrf_id1 = 1
+        vrf_id2 = 2
+
+        self.pg1.unconfig_ip4()
+        self.pg2.unconfig_ip4()
+        self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id1})
+        self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id2})
+        self.pg1.set_table_ip4(vrf_id1)
+        self.pg2.set_table_ip4(vrf_id2)
+        self.pg1.config_ip4()
+        self.pg2.config_ip4()
+        self.pg1.resolve_arp()
+        self.pg2.resolve_arp()
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg2.sw_if_index,
+            is_add=1)
+
+        try:
+            # first VRF
+            pkts = self.create_stream_in(self.pg0, self.pg1)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out(capture, self.nat_addr)
+
+            pkts = self.create_stream_out(self.pg1, self.nat_addr)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+            self.tcp_port_in = 60303
+            self.udp_port_in = 60304
+            self.icmp_id_in = 60305
+
+            # second VRF
+            pkts = self.create_stream_in(self.pg0, self.pg2)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg2.get_capture(len(pkts))
+            self.verify_capture_out(capture, self.nat_addr)
+
+            pkts = self.create_stream_out(self.pg2, self.nat_addr)
+            self.pg2.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+
+        finally:
+            self.nat44_add_address(self.nat_addr, is_add=0)
+            self.pg1.unconfig_ip4()
+            self.pg2.unconfig_ip4()
+            self.pg1.set_table_ip4(0)
+            self.pg2.set_table_ip4(0)
+            self.pg1.config_ip4()
+            self.pg2.config_ip4()
+            self.pg1.resolve_arp()
+            self.pg2.resolve_arp()
+
+    def test_mss_clamping(self):
+        """ NAT44EI TCP MSS clamping """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+                 flags="S", options=[('MSS', 1400)]))
+
+        self.vapi.nat44_ei_set_mss_clamping(enable=1, mss_value=1000)
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        # Negotiated MSS value greater than configured - changed
+        self.verify_mss_value(capture[0], 1000)
+
+        self.vapi.nat44_ei_set_mss_clamping(enable=0, mss_value=1500)
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        # MSS clamping disabled - negotiated MSS unchanged
+        self.verify_mss_value(capture[0], 1400)
+
+        self.vapi.nat44_ei_set_mss_clamping(enable=1, mss_value=1500)
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        # Negotiated MSS value smaller than configured - unchanged
+        self.verify_mss_value(capture[0], 1400)
+
+    def test_ha_send(self):
+        """ NAT44EI Send HA session synchronization events (active) """
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.nat44_add_address(self.nat_addr)
+
+        self.vapi.nat44_ei_ha_set_listener(
+            ip_address=self.pg3.local_ip4, port=12345, path_mtu=512)
+        self.vapi.nat44_ei_ha_set_failover(
+            ip_address=self.pg3.remote_ip4, port=12346,
+            session_refresh_interval=10)
+        bind_layers(UDP, HANATStateSync, sport=12345)
+
+        # create sessions
+        pkts = self.create_stream_in(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture)
+        # active send HA events
+        self.vapi.nat44_ei_ha_flush()
+        stats = self.statistics['/nat44-ei/ha/add-event-send']
+        self.assertEqual(stats[:, 0].sum(), 3)
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        self.assert_packet_checksums_valid(p)
+        try:
+            ip = p[IP]
+            udp = p[UDP]
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(ip.src, self.pg3.local_ip4)
+            self.assertEqual(ip.dst, self.pg3.remote_ip4)
+            self.assertEqual(udp.sport, 12345)
+            self.assertEqual(udp.dport, 12346)
+            self.assertEqual(hanat.version, 1)
+            # self.assertEqual(hanat.thread_index, 0)
+            self.assertEqual(hanat.count, 3)
+            seq = hanat.sequence_number
+            for event in hanat.events:
+                self.assertEqual(event.event_type, 1)
+                self.assertEqual(event.in_addr, self.pg0.remote_ip4)
+                self.assertEqual(event.out_addr, self.nat_addr)
+                self.assertEqual(event.fib_index, 0)
+
+        # ACK received events
+        ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+               IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+               UDP(sport=12346, dport=12345) /
+               HANATStateSync(sequence_number=seq, flags='ACK',
+                              thread_index=hanat.thread_index))
+        self.pg3.add_stream(ack)
+        self.pg_start()
+        stats = self.statistics['/nat44-ei/ha/ack-recv']
+        self.assertEqual(stats[:, 0].sum(), 1)
+
+        # delete one session
+        self.pg_enable_capture(self.pg_interfaces)
+        self.vapi.nat44_ei_del_session(
+            address=self.pg0.remote_ip4, port=self.tcp_port_in,
+            protocol=IP_PROTOS.tcp, flags=self.config_flags.NAT44_EI_IF_INSIDE)
+        self.vapi.nat44_ei_ha_flush()
+        stats = self.statistics['/nat44-ei/ha/del-event-send']
+        self.assertEqual(stats[:, 0].sum(), 1)
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertGreater(hanat.sequence_number, seq)
+
+        # do not send ACK, active retry send HA event again
+        self.pg_enable_capture(self.pg_interfaces)
+        sleep(12)
+        stats = self.statistics['/nat44-ei/ha/retry-count']
+        self.assertEqual(stats[:, 0].sum(), 3)
+        stats = self.statistics['/nat44-ei/ha/missed-count']
+        self.assertEqual(stats[:, 0].sum(), 1)
+        capture = self.pg3.get_capture(3)
+        for packet in capture:
+            self.assertEqual(packet, p)
+
+        # session counters refresh
+        pkts = self.create_stream_out(self.pg1)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg0.get_capture(2)
+        self.vapi.nat44_ei_ha_flush()
+        stats = self.statistics['/nat44-ei/ha/refresh-event-send']
+        self.assertEqual(stats[:, 0].sum(), 2)
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        self.assert_packet_checksums_valid(p)
+        try:
+            ip = p[IP]
+            udp = p[UDP]
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(ip.src, self.pg3.local_ip4)
+            self.assertEqual(ip.dst, self.pg3.remote_ip4)
+            self.assertEqual(udp.sport, 12345)
+            self.assertEqual(udp.dport, 12346)
+            self.assertEqual(hanat.version, 1)
+            self.assertEqual(hanat.count, 2)
+            seq = hanat.sequence_number
+            for event in hanat.events:
+                self.assertEqual(event.event_type, 3)
+                self.assertEqual(event.out_addr, self.nat_addr)
+                self.assertEqual(event.fib_index, 0)
+                self.assertEqual(event.total_pkts, 2)
+                self.assertGreater(event.total_bytes, 0)
+
+        stats = self.statistics['/nat44-ei/ha/ack-recv']
+        ack = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+               IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+               UDP(sport=12346, dport=12345) /
+               HANATStateSync(sequence_number=seq, flags='ACK',
+                              thread_index=hanat.thread_index))
+        self.pg3.add_stream(ack)
+        self.pg_start()
+        stats = self.statistics['/nat44-ei/ha/ack-recv']
+        self.assertEqual(stats[:, 0].sum(), 2)
+
+    def test_ha_recv(self):
+        """ NAT44EI Receive HA session synchronization events (passive) """
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+        self.vapi.nat44_ei_ha_set_listener(ip_address=self.pg3.local_ip4,
+                                           port=12345, path_mtu=512)
+        bind_layers(UDP, HANATStateSync, sport=12345)
+
+        # this is a bit tricky - HA dictates thread index due to how it's
+        # designed, but once we use HA to create a session, we also want
+        # to pass a packet through said session. so the session must end
+        # up on the correct thread from both directions - in2out (based on
+        # IP address) and out2in (based on outside port)
+
+        # first choose a thread index which is correct for IP
+        thread_index = get_nat44_ei_in2out_worker_index(self.pg0.remote_ip4,
+                                                        self.vpp_worker_count)
+
+        # now pick a port which is correct for given thread
+        port_per_thread = int((0xffff-1024) / max(1, self.vpp_worker_count))
+        self.tcp_port_out = 1024 + random.randint(1, port_per_thread)
+        self.udp_port_out = 1024 + random.randint(1, port_per_thread)
+        if self.vpp_worker_count > 0:
+            self.tcp_port_out += port_per_thread * (thread_index - 1)
+            self.udp_port_out += port_per_thread * (thread_index - 1)
+
+        # send HA session add events to failover/passive
+        p = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+             IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+             UDP(sport=12346, dport=12345) /
+             HANATStateSync(sequence_number=1, events=[
+                 Event(event_type='add', protocol='tcp',
+                       in_addr=self.pg0.remote_ip4, out_addr=self.nat_addr,
+                       in_port=self.tcp_port_in, out_port=self.tcp_port_out,
+                       eh_addr=self.pg1.remote_ip4,
+                       ehn_addr=self.pg1.remote_ip4,
+                       eh_port=self.tcp_external_port,
+                       ehn_port=self.tcp_external_port, fib_index=0),
+                 Event(event_type='add', protocol='udp',
+                       in_addr=self.pg0.remote_ip4, out_addr=self.nat_addr,
+                       in_port=self.udp_port_in, out_port=self.udp_port_out,
+                       eh_addr=self.pg1.remote_ip4,
+                       ehn_addr=self.pg1.remote_ip4,
+                       eh_port=self.udp_external_port,
+                       ehn_port=self.udp_external_port, fib_index=0)],
+                 thread_index=thread_index))
+
+        self.pg3.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        # receive ACK
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(hanat.sequence_number, 1)
+            self.assertEqual(hanat.flags, 'ACK')
+            self.assertEqual(hanat.version, 1)
+            self.assertEqual(hanat.thread_index, thread_index)
+        stats = self.statistics['/nat44-ei/ha/ack-send']
+        self.assertEqual(stats[:, 0].sum(), 1)
+        stats = self.statistics['/nat44-ei/ha/add-event-recv']
+        self.assertEqual(stats[:, 0].sum(), 2)
+        users = self.statistics['/nat44-ei/total-users']
+        self.assertEqual(users[:, 0].sum(), 1)
+        sessions = self.statistics['/nat44-ei/total-sessions']
+        self.assertEqual(sessions[:, 0].sum(), 2)
+        users = self.vapi.nat44_ei_user_dump()
+        self.assertEqual(len(users), 1)
+        self.assertEqual(str(users[0].ip_address),
+                         self.pg0.remote_ip4)
+        # there should be 2 sessions created by HA
+        sessions = self.vapi.nat44_ei_user_session_dump(
+            users[0].ip_address, users[0].vrf_id)
+        self.assertEqual(len(sessions), 2)
+        for session in sessions:
+            self.assertEqual(str(session.inside_ip_address),
+                             self.pg0.remote_ip4)
+            self.assertEqual(str(session.outside_ip_address),
+                             self.nat_addr)
+            self.assertIn(session.inside_port,
+                          [self.tcp_port_in, self.udp_port_in])
+            self.assertIn(session.outside_port,
+                          [self.tcp_port_out, self.udp_port_out])
+            self.assertIn(session.protocol, [IP_PROTOS.tcp, IP_PROTOS.udp])
+
+        # send HA session delete event to failover/passive
+        p = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+             IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+             UDP(sport=12346, dport=12345) /
+             HANATStateSync(sequence_number=2, events=[
+                 Event(event_type='del', protocol='udp',
+                       in_addr=self.pg0.remote_ip4, out_addr=self.nat_addr,
+                       in_port=self.udp_port_in, out_port=self.udp_port_out,
+                       eh_addr=self.pg1.remote_ip4,
+                       ehn_addr=self.pg1.remote_ip4,
+                       eh_port=self.udp_external_port,
+                       ehn_port=self.udp_external_port, fib_index=0)],
+                 thread_index=thread_index))
+
+        self.pg3.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        # receive ACK
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(hanat.sequence_number, 2)
+            self.assertEqual(hanat.flags, 'ACK')
+            self.assertEqual(hanat.version, 1)
+        users = self.vapi.nat44_ei_user_dump()
+        self.assertEqual(len(users), 1)
+        self.assertEqual(str(users[0].ip_address),
+                         self.pg0.remote_ip4)
+        # now we should have only 1 session, 1 deleted by HA
+        sessions = self.vapi.nat44_ei_user_session_dump(users[0].ip_address,
+                                                        users[0].vrf_id)
+        self.assertEqual(len(sessions), 1)
+        stats = self.statistics['/nat44-ei/ha/del-event-recv']
+        self.assertEqual(stats[:, 0].sum(), 1)
+
+        stats = self.statistics.get_err_counter(
+            '/err/nat44-ei-ha/pkts-processed')
+        self.assertEqual(stats, 2)
+
+        # send HA session refresh event to failover/passive
+        p = (Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) /
+             IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4) /
+             UDP(sport=12346, dport=12345) /
+             HANATStateSync(sequence_number=3, events=[
+                 Event(event_type='refresh', protocol='tcp',
+                       in_addr=self.pg0.remote_ip4, out_addr=self.nat_addr,
+                       in_port=self.tcp_port_in, out_port=self.tcp_port_out,
+                       eh_addr=self.pg1.remote_ip4,
+                       ehn_addr=self.pg1.remote_ip4,
+                       eh_port=self.tcp_external_port,
+                       ehn_port=self.tcp_external_port, fib_index=0,
+                       total_bytes=1024, total_pkts=2)],
+                 thread_index=thread_index))
+        self.pg3.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        # receive ACK
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            hanat = p[HANATStateSync]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(hanat.sequence_number, 3)
+            self.assertEqual(hanat.flags, 'ACK')
+            self.assertEqual(hanat.version, 1)
+        users = self.vapi.nat44_ei_user_dump()
+        self.assertEqual(len(users), 1)
+        self.assertEqual(str(users[0].ip_address),
+                         self.pg0.remote_ip4)
+        sessions = self.vapi.nat44_ei_user_session_dump(
+            users[0].ip_address, users[0].vrf_id)
+        self.assertEqual(len(sessions), 1)
+        session = sessions[0]
+        self.assertEqual(session.total_bytes, 1024)
+        self.assertEqual(session.total_pkts, 2)
+        stats = self.statistics['/nat44-ei/ha/refresh-event-recv']
+        self.assertEqual(stats[:, 0].sum(), 1)
+
+        stats = self.statistics.get_err_counter(
+            '/err/nat44-ei-ha/pkts-processed')
+        self.assertEqual(stats, 3)
+
+        # send packet to test session created by HA
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=self.tcp_external_port, dport=self.tcp_port_out))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+        except IndexError:
+            self.logger.error(ppp("Invalid packet:", p))
+            raise
+        else:
+            self.assertEqual(ip.src, self.pg1.remote_ip4)
+            self.assertEqual(ip.dst, self.pg0.remote_ip4)
+            self.assertEqual(tcp.sport, self.tcp_external_port)
+            self.assertEqual(tcp.dport, self.tcp_port_in)
+
+    def reconfigure_frame_queue_nelts(self, frame_queue_nelts):
+        self.vapi.nat44_ei_plugin_enable_disable(enable=0)
+        self.vapi.nat44_ei_set_fq_options(frame_queue_nelts=frame_queue_nelts)
+        # keep plugin configuration persistent
+        self.plugin_enable()
+        return self.vapi.nat44_ei_show_fq_options().frame_queue_nelts
+
+    def test_set_frame_queue_nelts(self):
+        """ NAT44 EI API test - worker handoff frame queue elements """
+        self.assertEqual(self.reconfigure_frame_queue_nelts(512), 512)
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show nat44 ei timeouts"))
+        self.logger.info(self.vapi.cli("show nat44 ei addresses"))
+        self.logger.info(self.vapi.cli("show nat44 ei interfaces"))
+        self.logger.info(self.vapi.cli("show nat44 ei static mappings"))
+        self.logger.info(self.vapi.cli("show nat44 ei interface address"))
+        self.logger.info(self.vapi.cli("show nat44 ei sessions detail"))
+        self.logger.info(self.vapi.cli("show nat44 ei hash tables detail"))
+        self.logger.info(self.vapi.cli("show nat44 ei ha"))
+        self.logger.info(
+            self.vapi.cli("show nat44 ei addr-port-assignment-alg"))
+
+    def test_outside_address_distribution(self):
+        """ Outside address distribution based on source address """
+
+        x = 100
+        nat_addresses = []
+
+        for i in range(1, x):
+            a = "10.0.0.%d" % i
+            nat_addresses.append(a)
+
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        self.vapi.nat44_ei_add_del_address_range(
+            first_ip_address=nat_addresses[0],
+            last_ip_address=nat_addresses[-1],
+            vrf_id=0xFFFFFFFF, is_add=1)
+
+        self.pg0.generate_remote_hosts(x)
+
+        pkts = []
+        for i in range(x):
+            info = self.create_packet_info(self.pg0, self.pg1)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                 IP(src=self.pg0.remote_hosts[i].ip4,
+                     dst=self.pg1.remote_ip4) /
+                 UDP(sport=7000+i, dport=8000+i) /
+                 Raw(payload))
+            info.data = p
+            pkts.append(p)
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        recvd = self.pg1.get_capture(len(pkts))
+        for p_recvd in recvd:
+            payload_info = self.payload_to_info(p_recvd[Raw])
+            packet_index = payload_info.index
+            info = self._packet_infos[packet_index]
+            self.assertTrue(info is not None)
+            self.assertEqual(packet_index, info.index)
+            p_sent = info.data
+            packed = socket.inet_aton(p_sent[IP].src)
+            numeric = struct.unpack("!L", packed)[0]
+            numeric = socket.htonl(numeric)
+            a = nat_addresses[(numeric-1) % len(nat_addresses)]
+            self.assertEqual(
+                a, p_recvd[IP].src,
+                "Invalid packet (src IP %s translated to %s, but expected %s)"
+                % (p_sent[IP].src, p_recvd[IP].src, a))
+
+
+class TestNAT44Out2InDPO(MethodHolder):
+    """ NAT44EI Test Cases using out2in DPO """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestNAT44Out2InDPO, cls).setUpClass()
+        cls.vapi.cli("set log class nat44-ei level debug")
+
+        cls.tcp_port_in = 6303
+        cls.tcp_port_out = 6303
+        cls.udp_port_in = 6304
+        cls.udp_port_out = 6304
+        cls.icmp_id_in = 6305
+        cls.icmp_id_out = 6305
+        cls.nat_addr = '10.0.0.3'
+        cls.dst_ip4 = '192.168.70.1'
+
+        cls.create_pg_interfaces(range(2))
+
+        cls.pg0.admin_up()
+        cls.pg0.config_ip4()
+        cls.pg0.resolve_arp()
+
+        cls.pg1.admin_up()
+        cls.pg1.config_ip6()
+        cls.pg1.resolve_ndp()
+
+        r1 = VppIpRoute(cls, "::", 0,
+                        [VppRoutePath(cls.pg1.remote_ip6,
+                                      cls.pg1.sw_if_index)],
+                        register=False)
+        r1.add_vpp_config()
+
+    def setUp(self):
+        super(TestNAT44Out2InDPO, self).setUp()
+        flags = self.config_flags.NAT44_EI_OUT2IN_DPO
+        self.vapi.nat44_ei_plugin_enable_disable(enable=1, flags=flags)
+
+    def tearDown(self):
+        super(TestNAT44Out2InDPO, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.nat44_ei_plugin_enable_disable(enable=0)
+            self.vapi.cli("clear logging")
+
+    def configure_xlat(self):
+        self.dst_ip6_pfx = '1:2:3::'
+        self.dst_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+                                              self.dst_ip6_pfx)
+        self.dst_ip6_pfx_len = 96
+        self.src_ip6_pfx = '4:5:6::'
+        self.src_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+                                              self.src_ip6_pfx)
+        self.src_ip6_pfx_len = 96
+        self.vapi.map_add_domain(self.dst_ip6_pfx_n, self.dst_ip6_pfx_len,
+                                 self.src_ip6_pfx_n, self.src_ip6_pfx_len,
+                                 '\x00\x00\x00\x00', 0)
+
+    @unittest.skip('Temporary disabled')
+    def test_464xlat_ce(self):
+        """ Test 464XLAT CE with NAT44EI """
+
+        self.configure_xlat()
+
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_add_del_address_range(
+            first_ip_address=self.nat_addr_n,
+            last_ip_address=self.nat_addr_n,
+            vrf_id=0xFFFFFFFF, is_add=1)
+
+        out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+                                       self.dst_ip6_pfx_len)
+        out_dst_ip6 = self.compose_ip6(self.nat_addr, self.src_ip6_pfx,
+                                       self.src_ip6_pfx_len)
+
+        try:
+            pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+            self.pg0.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg1.get_capture(len(pkts))
+            self.verify_capture_out_ip6(capture, nat_ip=out_dst_ip6,
+                                        dst_ip=out_src_ip6)
+
+            pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6,
+                                              out_dst_ip6)
+            self.pg1.add_stream(pkts)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            capture = self.pg0.get_capture(len(pkts))
+            self.verify_capture_in(capture, self.pg0)
+        finally:
+            self.vapi.nat44_ei_interface_add_del_feature(
+                sw_if_index=self.pg0.sw_if_index,
+                flags=flags)
+            self.vapi.nat44_ei_add_del_address_range(
+                first_ip_address=self.nat_addr_n,
+                last_ip_address=self.nat_addr_n,
+                vrf_id=0xFFFFFFFF)
+
+    @unittest.skip('Temporary disabled')
+    def test_464xlat_ce_no_nat(self):
+        """ Test 464XLAT CE without NAT44EI """
+
+        self.configure_xlat()
+
+        out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+                                       self.dst_ip6_pfx_len)
+        out_dst_ip6 = self.compose_ip6(self.pg0.remote_ip4, self.src_ip6_pfx,
+                                       self.src_ip6_pfx_len)
+
+        pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out_ip6(capture, dst_ip=out_src_ip6,
+                                    nat_ip=out_dst_ip6, same_port=True)
+
+        pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6, out_dst_ip6)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in(capture, self.pg0)
+
+
+class TestNAT44EIMW(MethodHolder):
+    """ NAT44EI Test Cases (multiple workers) """
+    vpp_worker_count = 2
+    max_translations = 10240
+    max_users = 10240
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestNAT44EIMW, cls).setUpClass()
+        cls.vapi.cli("set log class nat level debug")
+
+        cls.tcp_port_in = 6303
+        cls.tcp_port_out = 6303
+        cls.udp_port_in = 6304
+        cls.udp_port_out = 6304
+        cls.icmp_id_in = 6305
+        cls.icmp_id_out = 6305
+        cls.nat_addr = '10.0.0.3'
+        cls.ipfix_src_port = 4739
+        cls.ipfix_domain_id = 1
+        cls.tcp_external_port = 80
+        cls.udp_external_port = 69
+
+        cls.create_pg_interfaces(range(10))
+        cls.interfaces = list(cls.pg_interfaces[0:4])
+
+        for i in cls.interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+        cls.pg0.generate_remote_hosts(3)
+        cls.pg0.configure_ipv4_neighbors()
+
+        cls.pg1.generate_remote_hosts(1)
+        cls.pg1.configure_ipv4_neighbors()
+
+        cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7]))
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 10})
+        cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 20})
+
+        cls.pg4._local_ip4 = "172.16.255.1"
+        cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2"
+        cls.pg4.set_table_ip4(10)
+        cls.pg5._local_ip4 = "172.17.255.3"
+        cls.pg5._remote_hosts[0]._ip4 = "172.17.255.4"
+        cls.pg5.set_table_ip4(10)
+        cls.pg6._local_ip4 = "172.16.255.1"
+        cls.pg6._remote_hosts[0]._ip4 = "172.16.255.2"
+        cls.pg6.set_table_ip4(20)
+        for i in cls.overlapping_interfaces:
+            i.config_ip4()
+            i.admin_up()
+            i.resolve_arp()
+
+        cls.pg7.admin_up()
+        cls.pg8.admin_up()
+
+        cls.pg9.generate_remote_hosts(2)
+        cls.pg9.config_ip4()
+        cls.vapi.sw_interface_add_del_address(
+            sw_if_index=cls.pg9.sw_if_index,
+            prefix="10.0.0.1/24")
+
+        cls.pg9.admin_up()
+        cls.pg9.resolve_arp()
+        cls.pg9._remote_hosts[1]._ip4 = cls.pg9._remote_hosts[0]._ip4
+        cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
+        cls.pg9.resolve_arp()
+
+    def setUp(self):
+        super(TestNAT44EIMW, self).setUp()
+        self.vapi.nat44_ei_plugin_enable_disable(
+            sessions=self.max_translations,
+            users=self.max_users, enable=1)
+
+    def tearDown(self):
+        super(TestNAT44EIMW, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.nat44_ei_ipfix_enable_disable(
+                domain_id=self.ipfix_domain_id,
+                src_port=self.ipfix_src_port,
+                enable=0)
+            self.ipfix_src_port = 4739
+            self.ipfix_domain_id = 1
+
+            self.vapi.nat44_ei_plugin_enable_disable(enable=0)
+            self.vapi.cli("clear logging")
+
+    def test_hairpinning(self):
+        """ NAT44EI hairpinning - 1:1 NAPT """
+
+        host = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        host_in_port = 1234
+        host_out_port = 0
+        server_in_port = 5678
+        server_out_port = 8765
+        worker_1 = 1
+        worker_2 = 2
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # add static mapping for server
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
+
+        cnt = self.statistics['/nat44-ei/hairpinning']
+        # send packet from host to server
+        p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+             IP(src=host.ip4, dst=self.nat_addr) /
+             TCP(sport=host_in_port, dport=server_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, server.ip4)
+            self.assertNotEqual(tcp.sport, host_in_port)
+            self.assertEqual(tcp.dport, server_in_port)
+            self.assert_packet_checksums_valid(p)
+            host_out_port = tcp.sport
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[worker_2][if_idx] - cnt[worker_1][if_idx], 1)
+
+        # send reply from server to host
+        p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+             IP(src=server.ip4, dst=self.nat_addr) /
+             TCP(sport=server_in_port, dport=host_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, host.ip4)
+            self.assertEqual(tcp.sport, server_out_port)
+            self.assertEqual(tcp.dport, host_in_port)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        after = self.statistics['/nat44-ei/hairpinning']
+        if_idx = self.pg0.sw_if_index
+        self.assertEqual(after[worker_1][if_idx] - cnt[worker_1][if_idx], 1)
+        self.assertEqual(after[worker_2][if_idx] - cnt[worker_2][if_idx], 2)
+
+    def test_hairpinning2(self):
+        """ NAT44EI hairpinning - 1:1 NAT"""
+
+        server1_nat_ip = "10.0.0.10"
+        server2_nat_ip = "10.0.0.11"
+        host = self.pg0.remote_hosts[0]
+        server1 = self.pg0.remote_hosts[1]
+        server2 = self.pg0.remote_hosts[2]
+        server_tcp_port = 22
+        server_udp_port = 20
+
+        self.nat44_add_address(self.nat_addr)
+        flags = self.config_flags.NAT44_EI_IF_INSIDE
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg0.sw_if_index,
+            flags=flags, is_add=1)
+        self.vapi.nat44_ei_interface_add_del_feature(
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=1)
+
+        # add static mapping for servers
+        self.nat44_add_static_mapping(server1.ip4, server1_nat_ip)
+        self.nat44_add_static_mapping(server2.ip4, server2_nat_ip)
+
+        # host to server1
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             TCP(sport=self.tcp_port_in, dport=server_tcp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             UDP(sport=self.udp_port_in, dport=server_udp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=host.ip4, dst=server1_nat_ip) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, self.nat_addr)
+                self.assertEqual(packet[IP].dst, server1.ip4)
+                if packet.haslayer(TCP):
+                    self.assertNotEqual(packet[TCP].sport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].dport, server_tcp_port)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertNotEqual(packet[UDP].sport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].dport, server_udp_port)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    self.assertNotEqual(packet[ICMP].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP].id
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server1 to host
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             TCP(sport=server_tcp_port, dport=self.tcp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             UDP(sport=server_udp_port, dport=self.udp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
+             ICMP(id=self.icmp_id_out, type='echo-reply'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server1_nat_ip)
+                self.assertEqual(packet[IP].dst, host.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].sport, server_tcp_port)
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].sport, server_udp_port)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server2 to server1
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             TCP(sport=self.tcp_port_in, dport=server_tcp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             UDP(sport=self.udp_port_in, dport=server_udp_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server2.ip4, dst=server1_nat_ip) /
+             ICMP(id=self.icmp_id_in, type='echo-request'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server2_nat_ip)
+                self.assertEqual(packet[IP].dst, server1.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].sport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].dport, server_tcp_port)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].sport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].dport, server_udp_port)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP].id
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server1 to server2
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             TCP(sport=server_tcp_port, dport=self.tcp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             UDP(sport=server_udp_port, dport=self.udp_port_out))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=server1.ip4, dst=server2_nat_ip) /
+             ICMP(id=self.icmp_id_out, type='echo-reply'))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, server1_nat_ip)
+                self.assertEqual(packet[IP].dst, server2.ip4)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                    self.assertEqual(packet[TCP].sport, server_tcp_port)
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                    self.assertEqual(packet[UDP].sport, server_udp_port)
+                else:
+                    self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_nat64.py b/test/test_nat64.py
new file mode 100644
index 0000000..9a10b9f
--- /dev/null
+++ b/test/test_nat64.py
@@ -0,0 +1,1937 @@
+#!/usr/bin/env python3
+
+import ipaddress
+import random
+import socket
+import struct
+import unittest
+from io import BytesIO
+from time import sleep
+
+import scapy.compat
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.data import IP_PROTOS
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
+    ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ppc, ppp
+from vpp_papi import VppEnum
+
+
+@tag_fixme_vpp_workers
+class TestNAT64(VppTestCase):
+    """ NAT64 Test Cases """
+
+    @property
+    def SYSLOG_SEVERITY(self):
+        return VppEnum.vl_api_syslog_severity_t
+
+    @property
+    def config_flags(self):
+        return VppEnum.vl_api_nat_config_flags_t
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestNAT64, cls).setUpClass()
+
+        cls.tcp_port_in = 6303
+        cls.tcp_port_out = 6303
+        cls.udp_port_in = 6304
+        cls.udp_port_out = 6304
+        cls.icmp_id_in = 6305
+        cls.icmp_id_out = 6305
+        cls.tcp_external_port = 80
+        cls.nat_addr = '10.0.0.3'
+        cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
+        cls.vrf1_id = 10
+        cls.vrf1_nat_addr = '10.0.10.3'
+        cls.ipfix_src_port = 4739
+        cls.ipfix_domain_id = 1
+
+        cls.create_pg_interfaces(range(6))
+        cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
+        cls.ip6_interfaces.append(cls.pg_interfaces[2])
+        cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
+
+        cls.vapi.ip_table_add_del(is_add=1,
+                                  table={'table_id': cls.vrf1_id,
+                                         'is_ip6': 1})
+
+        cls.pg_interfaces[2].set_table_ip6(cls.vrf1_id)
+
+        cls.pg0.generate_remote_hosts(2)
+
+        for i in cls.ip6_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.configure_ipv6_neighbors()
+
+        for i in cls.ip4_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+        cls.pg3.admin_up()
+        cls.pg3.config_ip4()
+        cls.pg3.resolve_arp()
+        cls.pg3.config_ip6()
+        cls.pg3.configure_ipv6_neighbors()
+
+        cls.pg5.admin_up()
+        cls.pg5.config_ip6()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestNAT64, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestNAT64, self).setUp()
+        self.vapi.nat64_plugin_enable_disable(enable=1,
+                                              bib_buckets=128, st_buckets=256)
+
+    def tearDown(self):
+        super(TestNAT64, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.nat64_plugin_enable_disable(enable=0)
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show nat64 pool"))
+        self.logger.info(self.vapi.cli("show nat64 interfaces"))
+        self.logger.info(self.vapi.cli("show nat64 prefix"))
+        self.logger.info(self.vapi.cli("show nat64 bib all"))
+        self.logger.info(self.vapi.cli("show nat64 session table all"))
+
+    def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
+        """
+        Create IPv6 packet stream for inside network
+
+        :param in_if: Inside interface
+        :param out_if: Outside interface
+        :param ttl: Hop Limit of generated packets
+        :param pref: NAT64 prefix
+        :param plen: NAT64 prefix length
+        """
+        pkts = []
+        if pref is None:
+            dst = ''.join(['64:ff9b::', out_if.remote_ip4])
+        else:
+            dst = self.compose_ip6(out_if.remote_ip4, pref, plen)
+
+        # TCP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        pkts.append(p)
+
+        # UDP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+             UDP(sport=self.udp_port_in, dport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+             IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+             ICMPv6EchoRequest(id=self.icmp_id_in))
+        pkts.append(p)
+
+        return pkts
+
+    def create_stream_out(self, out_if, dst_ip=None, ttl=64,
+                          use_inside_ports=False):
+        """
+        Create packet stream for outside network
+
+        :param out_if: Outside interface
+        :param dst_ip: Destination IP address (Default use global NAT address)
+        :param ttl: TTL of generated packets
+        :param use_inside_ports: Use inside NAT ports as destination ports
+               instead of outside ports
+        """
+        if dst_ip is None:
+            dst_ip = self.nat_addr
+        if not use_inside_ports:
+            tcp_port = self.tcp_port_out
+            udp_port = self.udp_port_out
+            icmp_id = self.icmp_id_out
+        else:
+            tcp_port = self.tcp_port_in
+            udp_port = self.udp_port_in
+            icmp_id = self.icmp_id_in
+        pkts = []
+        # TCP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             TCP(dport=tcp_port, sport=20))
+        pkts.extend([p, p])
+
+        # UDP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             UDP(dport=udp_port, sport=20))
+        pkts.append(p)
+
+        # ICMP
+        p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+             IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+             ICMP(id=icmp_id, type='echo-reply'))
+        pkts.append(p)
+
+        return pkts
+
+    def verify_capture_out(self, capture, nat_ip=None, same_port=False,
+                           dst_ip=None, is_ip6=False, ignore_port=False):
+        """
+        Verify captured packets on outside network
+
+        :param capture: Captured packets
+        :param nat_ip: Translated IP address (Default use global NAT address)
+        :param same_port: Source port number is not translated (Default False)
+        :param dst_ip: Destination IP address (Default do not verify)
+        :param is_ip6: If L3 protocol is IPv6 (Default False)
+        """
+        if is_ip6:
+            IP46 = IPv6
+            ICMP46 = ICMPv6EchoRequest
+        else:
+            IP46 = IP
+            ICMP46 = ICMP
+        if nat_ip is None:
+            nat_ip = self.nat_addr
+        for packet in capture:
+            try:
+                if not is_ip6:
+                    self.assert_packet_checksums_valid(packet)
+                self.assertEqual(packet[IP46].src, nat_ip)
+                if dst_ip is not None:
+                    self.assertEqual(packet[IP46].dst, dst_ip)
+                if packet.haslayer(TCP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[TCP].sport, self.tcp_port_in)
+                    self.tcp_port_out = packet[TCP].sport
+                    self.assert_packet_checksums_valid(packet)
+                elif packet.haslayer(UDP):
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[UDP].sport, self.udp_port_in)
+                    self.udp_port_out = packet[UDP].sport
+                else:
+                    if not ignore_port:
+                        if same_port:
+                            self.assertEqual(
+                                packet[ICMP46].id, self.icmp_id_in)
+                        else:
+                            self.assertNotEqual(
+                                packet[ICMP46].id, self.icmp_id_in)
+                    self.icmp_id_out = packet[ICMP46].id
+                    self.assert_packet_checksums_valid(packet)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(outside network):", packet))
+                raise
+
+    def verify_capture_in_ip6(self, capture, src_ip, dst_ip):
+        """
+        Verify captured IPv6 packets on inside network
+
+        :param capture: Captured packets
+        :param src_ip: Source IP
+        :param dst_ip: Destination IP address
+        """
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, src_ip)
+                self.assertEqual(packet[IPv6].dst, dst_ip)
+                self.assert_packet_checksums_valid(packet)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+                elif packet.haslayer(UDP):
+                    self.assertEqual(packet[UDP].dport, self.udp_port_in)
+                else:
+                    self.assertEqual(packet[ICMPv6EchoReply].id,
+                                     self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet "
+                                      "(inside network):", packet))
+                raise
+
+    def create_stream_frag(self, src_if, dst, sport, dport, data,
+                           proto=IP_PROTOS.tcp, echo_reply=False):
+        """
+        Create fragmented packet stream
+
+        :param src_if: Source interface
+        :param dst: Destination IPv4 address
+        :param sport: Source port
+        :param dport: Destination port
+        :param data: Payload data
+        :param proto: protocol (TCP, UDP, ICMP)
+        :param echo_reply: use echo_reply if protocol is ICMP
+        :returns: Fragments
+        """
+        if proto == IP_PROTOS.tcp:
+            p = (IP(src=src_if.remote_ip4, dst=dst) /
+                 TCP(sport=sport, dport=dport) /
+                 Raw(data))
+            p = p.__class__(scapy.compat.raw(p))
+            chksum = p[TCP].chksum
+            proto_header = TCP(sport=sport, dport=dport, chksum=chksum)
+        elif proto == IP_PROTOS.udp:
+            proto_header = UDP(sport=sport, dport=dport)
+        elif proto == IP_PROTOS.icmp:
+            if not echo_reply:
+                proto_header = ICMP(id=sport, type='echo-request')
+            else:
+                proto_header = ICMP(id=sport, type='echo-reply')
+        else:
+            raise Exception("Unsupported protocol")
+        id = random.randint(0, 65535)
+        pkts = []
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[0:4])
+        else:
+            raw = Raw(data[0:16])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=0, id=id) /
+             proto_header /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[4:20])
+        else:
+            raw = Raw(data[16:32])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=3, id=id,
+                proto=proto) /
+             raw)
+        pkts.append(p)
+        if proto == IP_PROTOS.tcp:
+            raw = Raw(data[20:])
+        else:
+            raw = Raw(data[32:])
+        p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+             IP(src=src_if.remote_ip4, dst=dst, frag=5, proto=proto,
+                id=id) /
+             raw)
+        pkts.append(p)
+        return pkts
+
+    def create_stream_frag_ip6(self, src_if, dst, sport, dport, data,
+                               pref=None, plen=0, frag_size=128):
+        """
+        Create fragmented packet stream
+
+        :param src_if: Source interface
+        :param dst: Destination IPv4 address
+        :param sport: Source TCP port
+        :param dport: Destination TCP port
+        :param data: Payload data
+        :param pref: NAT64 prefix
+        :param plen: NAT64 prefix length
+        :param fragsize: size of fragments
+        :returns: Fragments
+        """
+        if pref is None:
+            dst_ip6 = ''.join(['64:ff9b::', dst])
+        else:
+            dst_ip6 = self.compose_ip6(dst, pref, plen)
+
+        p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+             IPv6(src=src_if.remote_ip6, dst=dst_ip6) /
+             IPv6ExtHdrFragment(id=random.randint(0, 65535)) /
+             TCP(sport=sport, dport=dport) /
+             Raw(data))
+
+        return fragment6(p, frag_size)
+
+    def reass_frags_and_verify(self, frags, src, dst):
+        """
+        Reassemble and verify fragmented packet
+
+        :param frags: Captured fragments
+        :param src: Source IPv4 address to verify
+        :param dst: Destination IPv4 address to verify
+
+        :returns: Reassembled IPv4 packet
+        """
+        buffer = BytesIO()
+        for p in frags:
+            self.assertEqual(p[IP].src, src)
+            self.assertEqual(p[IP].dst, dst)
+            self.assert_ip_checksum_valid(p)
+            buffer.seek(p[IP].frag * 8)
+            buffer.write(bytes(p[IP].payload))
+        ip = IP(src=frags[0][IP].src, dst=frags[0][IP].dst,
+                proto=frags[0][IP].proto)
+        if ip.proto == IP_PROTOS.tcp:
+            p = (ip / TCP(buffer.getvalue()))
+            self.logger.debug(ppp("Reassembled:", p))
+            self.assert_tcp_checksum_valid(p)
+        elif ip.proto == IP_PROTOS.udp:
+            p = (ip / UDP(buffer.getvalue()[:8]) /
+                 Raw(buffer.getvalue()[8:]))
+        elif ip.proto == IP_PROTOS.icmp:
+            p = (ip / ICMP(buffer.getvalue()))
+        return p
+
+    def reass_frags_and_verify_ip6(self, frags, src, dst):
+        """
+        Reassemble and verify fragmented packet
+
+        :param frags: Captured fragments
+        :param src: Source IPv6 address to verify
+        :param dst: Destination IPv6 address to verify
+
+        :returns: Reassembled IPv6 packet
+        """
+        buffer = BytesIO()
+        for p in frags:
+            self.assertEqual(p[IPv6].src, src)
+            self.assertEqual(p[IPv6].dst, dst)
+            buffer.seek(p[IPv6ExtHdrFragment].offset * 8)
+            buffer.write(bytes(p[IPv6ExtHdrFragment].payload))
+        ip = IPv6(src=frags[0][IPv6].src, dst=frags[0][IPv6].dst,
+                  nh=frags[0][IPv6ExtHdrFragment].nh)
+        if ip.nh == IP_PROTOS.tcp:
+            p = (ip / TCP(buffer.getvalue()))
+        elif ip.nh == IP_PROTOS.udp:
+            p = (ip / UDP(buffer.getvalue()))
+        self.logger.debug(ppp("Reassembled:", p))
+        self.assert_packet_checksums_valid(p)
+        return p
+
+    def verify_ipfix_max_bibs(self, data, limit):
+        """
+        Verify IPFIX maximum BIB entries exceeded event
+
+        :param data: Decoded IPFIX data records
+        :param limit: Number of maximum BIB entries that can be created.
+        """
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        self.assertEqual(scapy.compat.orb(record[230]), 13)
+        # natQuotaExceededEvent
+        self.assertEqual(struct.pack("I", 2), record[466])
+        # maxBIBEntries
+        self.assertEqual(struct.pack("I", limit), record[472])
+
+    def verify_ipfix_bib(self, data, is_create, src_addr):
+        """
+        Verify IPFIX NAT64 BIB create and delete events
+
+        :param data: Decoded IPFIX data records
+        :param is_create: Create event if nonzero value otherwise delete event
+        :param src_addr: IPv6 source address
+        """
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        if is_create:
+            self.assertEqual(scapy.compat.orb(record[230]), 10)
+        else:
+            self.assertEqual(scapy.compat.orb(record[230]), 11)
+        # sourceIPv6Address
+        self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
+        # postNATSourceIPv4Address
+        self.assertEqual(self.nat_addr_n, record[225])
+        # protocolIdentifier
+        self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
+        # ingressVRFID
+        self.assertEqual(struct.pack("!I", 0), record[234])
+        # sourceTransportPort
+        self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
+        # postNAPTSourceTransportPort
+        self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
+
+    def verify_ipfix_nat64_ses(self, data, is_create, src_addr, dst_addr,
+                               dst_port):
+        """
+        Verify IPFIX NAT64 session create and delete events
+
+        :param data: Decoded IPFIX data records
+        :param is_create: Create event if nonzero value otherwise delete event
+        :param src_addr: IPv6 source address
+        :param dst_addr: IPv4 destination address
+        :param dst_port: destination TCP port
+        """
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        if is_create:
+            self.assertEqual(scapy.compat.orb(record[230]), 6)
+        else:
+            self.assertEqual(scapy.compat.orb(record[230]), 7)
+        # sourceIPv6Address
+        self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
+        # destinationIPv6Address
+        self.assertEqual(socket.inet_pton(socket.AF_INET6,
+                                          self.compose_ip6(dst_addr,
+                                                           '64:ff9b::',
+                                                           96)),
+                         record[28])
+        # postNATSourceIPv4Address
+        self.assertEqual(self.nat_addr_n, record[225])
+        # postNATDestinationIPv4Address
+        self.assertEqual(socket.inet_pton(socket.AF_INET, dst_addr),
+                         record[226])
+        # protocolIdentifier
+        self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
+        # ingressVRFID
+        self.assertEqual(struct.pack("!I", 0), record[234])
+        # sourceTransportPort
+        self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
+        # postNAPTSourceTransportPort
+        self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
+        # destinationTransportPort
+        self.assertEqual(struct.pack("!H", dst_port), record[11])
+        # postNAPTDestinationTransportPort
+        self.assertEqual(struct.pack("!H", dst_port), record[228])
+
+    def verify_syslog_sess(self, data, is_add=True, is_ip6=False):
+        message = data.decode('utf-8')
+        try:
+            message = SyslogMessage.parse(message)
+        except ParseError as e:
+            self.logger.error(e)
+            raise
+        else:
+            self.assertEqual(message.severity, SyslogSeverity.info)
+            self.assertEqual(message.appname, 'NAT')
+            self.assertEqual(message.msgid, 'SADD' if is_add else 'SDEL')
+            sd_params = message.sd.get('nsess')
+            self.assertTrue(sd_params is not None)
+            if is_ip6:
+                self.assertEqual(sd_params.get('IATYP'), 'IPv6')
+                self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip6)
+            else:
+                self.assertEqual(sd_params.get('IATYP'), 'IPv4')
+                self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip4)
+                self.assertTrue(sd_params.get('SSUBIX') is not None)
+            self.assertEqual(sd_params.get('ISPORT'), "%d" % self.tcp_port_in)
+            self.assertEqual(sd_params.get('XATYP'), 'IPv4')
+            self.assertEqual(sd_params.get('XSADDR'), self.nat_addr)
+            self.assertEqual(sd_params.get('XSPORT'), "%d" % self.tcp_port_out)
+            self.assertEqual(sd_params.get('PROTO'), "%d" % IP_PROTOS.tcp)
+            self.assertEqual(sd_params.get('SVLAN'), '0')
+            self.assertEqual(sd_params.get('XDADDR'), self.pg1.remote_ip4)
+            self.assertEqual(sd_params.get('XDPORT'),
+                             "%d" % self.tcp_external_port)
+
+    def compose_ip6(self, ip4, pref, plen):
+        """
+        Compose IPv4-embedded IPv6 addresses
+
+        :param ip4: IPv4 address
+        :param pref: IPv6 prefix
+        :param plen: IPv6 prefix length
+        :returns: IPv4-embedded IPv6 addresses
+        """
+        pref_n = list(socket.inet_pton(socket.AF_INET6, pref))
+        ip4_n = list(socket.inet_pton(socket.AF_INET, ip4))
+        if plen == 32:
+            pref_n[4] = ip4_n[0]
+            pref_n[5] = ip4_n[1]
+            pref_n[6] = ip4_n[2]
+            pref_n[7] = ip4_n[3]
+        elif plen == 40:
+            pref_n[5] = ip4_n[0]
+            pref_n[6] = ip4_n[1]
+            pref_n[7] = ip4_n[2]
+            pref_n[9] = ip4_n[3]
+        elif plen == 48:
+            pref_n[6] = ip4_n[0]
+            pref_n[7] = ip4_n[1]
+            pref_n[9] = ip4_n[2]
+            pref_n[10] = ip4_n[3]
+        elif plen == 56:
+            pref_n[7] = ip4_n[0]
+            pref_n[9] = ip4_n[1]
+            pref_n[10] = ip4_n[2]
+            pref_n[11] = ip4_n[3]
+        elif plen == 64:
+            pref_n[9] = ip4_n[0]
+            pref_n[10] = ip4_n[1]
+            pref_n[11] = ip4_n[2]
+            pref_n[12] = ip4_n[3]
+        elif plen == 96:
+            pref_n[12] = ip4_n[0]
+            pref_n[13] = ip4_n[1]
+            pref_n[14] = ip4_n[2]
+            pref_n[15] = ip4_n[3]
+        packed_pref_n = b''.join([scapy.compat.chb(x) for x in pref_n])
+        return socket.inet_ntop(socket.AF_INET6, packed_pref_n)
+
+    def verify_ipfix_max_sessions(self, data, limit):
+        """
+        Verify IPFIX maximum session entries exceeded event
+
+        :param data: Decoded IPFIX data records
+        :param limit: Number of maximum session entries that can be created.
+        """
+        self.assertEqual(1, len(data))
+        record = data[0]
+        # natEvent
+        self.assertEqual(scapy.compat.orb(record[230]), 13)
+        # natQuotaExceededEvent
+        self.assertEqual(struct.pack("I", 1), record[466])
+        # maxSessionEntries
+        self.assertEqual(struct.pack("I", limit), record[471])
+
+    def test_nat64_inside_interface_handles_neighbor_advertisement(self):
+        """ NAT64 inside interface handles Neighbor Advertisement """
+
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg5.sw_if_index)
+
+        # Try to send ping
+        ping = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
+                IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
+                ICMPv6EchoRequest())
+        pkts = [ping]
+        self.pg5.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Wait for Neighbor Solicitation
+        capture = self.pg5.get_capture(len(pkts))
+        packet = capture[0]
+        try:
+            self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
+            self.assertEqual(packet.haslayer(ICMPv6ND_NS), 1)
+            tgt = packet[ICMPv6ND_NS].tgt
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # Send Neighbor Advertisement
+        p = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
+             IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
+             ICMPv6ND_NA(tgt=tgt) /
+             ICMPv6NDOptDstLLAddr(lladdr=self.pg5.remote_mac))
+        pkts = [p]
+        self.pg5.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Try to send ping again
+        pkts = [ping]
+        self.pg5.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Wait for ping reply
+        capture = self.pg5.get_capture(len(pkts))
+        packet = capture[0]
+        try:
+            self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
+            self.assertEqual(packet[IPv6].dst, self.pg5.remote_ip6)
+            self.assertEqual(packet.haslayer(ICMPv6EchoReply), 1)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_pool(self):
+        """ Add/delete address to NAT64 pool """
+        nat_addr = '1.2.3.4'
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
+                                                end_addr=nat_addr,
+                                                vrf_id=0xFFFFFFFF, is_add=1)
+
+        addresses = self.vapi.nat64_pool_addr_dump()
+        self.assertEqual(len(addresses), 1)
+        self.assertEqual(str(addresses[0].address), nat_addr)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
+                                                end_addr=nat_addr,
+                                                vrf_id=0xFFFFFFFF, is_add=0)
+
+        addresses = self.vapi.nat64_pool_addr_dump()
+        self.assertEqual(len(addresses), 0)
+
+    def test_interface(self):
+        """ Enable/disable NAT64 feature on the interface """
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        interfaces = self.vapi.nat64_interface_dump()
+        self.assertEqual(len(interfaces), 2)
+        pg0_found = False
+        pg1_found = False
+        for intf in interfaces:
+            if intf.sw_if_index == self.pg0.sw_if_index:
+                self.assertEqual(intf.flags, self.config_flags.NAT_IS_INSIDE)
+                pg0_found = True
+            elif intf.sw_if_index == self.pg1.sw_if_index:
+                self.assertEqual(intf.flags, self.config_flags.NAT_IS_OUTSIDE)
+                pg1_found = True
+        self.assertTrue(pg0_found)
+        self.assertTrue(pg1_found)
+
+        features = self.vapi.cli("show interface features pg0")
+        self.assertIn('nat64-in2out', features)
+        features = self.vapi.cli("show interface features pg1")
+        self.assertIn('nat64-out2in', features)
+
+        self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        interfaces = self.vapi.nat64_interface_dump()
+        self.assertEqual(len(interfaces), 0)
+
+    def test_static_bib(self):
+        """ Add/delete static BIB entry """
+        in_addr = '2001:db8:85a3::8a2e:370:7334'
+        out_addr = '10.1.1.3'
+        in_port = 1234
+        out_port = 5678
+        proto = IP_PROTOS.tcp
+
+        self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
+                                           i_port=in_port, o_port=out_port,
+                                           proto=proto, vrf_id=0, is_add=1)
+        bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
+        static_bib_num = 0
+        for bibe in bib:
+            if bibe.flags & self.config_flags.NAT_IS_STATIC:
+                static_bib_num += 1
+                self.assertEqual(str(bibe.i_addr), in_addr)
+                self.assertEqual(str(bibe.o_addr), out_addr)
+                self.assertEqual(bibe.i_port, in_port)
+                self.assertEqual(bibe.o_port, out_port)
+        self.assertEqual(static_bib_num, 1)
+        bibs = self.statistics.get_counter('/nat64/total-bibs')
+        self.assertEqual(bibs[0][0], 1)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
+                                           i_port=in_port, o_port=out_port,
+                                           proto=proto, vrf_id=0, is_add=0)
+        bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
+        static_bib_num = 0
+        for bibe in bib:
+            if bibe.flags & self.config_flags.NAT_IS_STATIC:
+                static_bib_num += 1
+        self.assertEqual(static_bib_num, 0)
+        bibs = self.statistics.get_counter('/nat64/total-bibs')
+        self.assertEqual(bibs[0][0], 0)
+
+    def test_set_timeouts(self):
+        """ Set NAT64 timeouts """
+        # verify default values
+        timeouts = self.vapi.nat64_get_timeouts()
+        self.assertEqual(timeouts.udp, 300)
+        self.assertEqual(timeouts.icmp, 60)
+        self.assertEqual(timeouts.tcp_transitory, 240)
+        self.assertEqual(timeouts.tcp_established, 7440)
+
+        # set and verify custom values
+        self.vapi.nat64_set_timeouts(udp=200, tcp_established=7450,
+                                     tcp_transitory=250, icmp=30)
+        timeouts = self.vapi.nat64_get_timeouts()
+        self.assertEqual(timeouts.udp, 200)
+        self.assertEqual(timeouts.icmp, 30)
+        self.assertEqual(timeouts.tcp_transitory, 250)
+        self.assertEqual(timeouts.tcp_established, 7450)
+
+    def test_dynamic(self):
+        """ NAT64 dynamic translation test """
+        self.tcp_port_in = 6303
+        self.udp_port_in = 6304
+        self.icmp_id_in = 6305
+
+        ses_num_start = self.nat64_get_ses_num()
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        # in2out
+        tcpn = self.statistics.get_counter('/nat64/in2out/tcp')[0]
+        udpn = self.statistics.get_counter('/nat64/in2out/udp')[0]
+        icmpn = self.statistics.get_counter('/nat64/in2out/icmp')[0]
+        drops = self.statistics.get_counter('/nat64/in2out/drops')[0]
+
+        pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        if_idx = self.pg0.sw_if_index
+        cnt = self.statistics.get_counter('/nat64/in2out/tcp')[0]
+        self.assertEqual(cnt[if_idx] - tcpn[if_idx], 1)
+        cnt = self.statistics.get_counter('/nat64/in2out/udp')[0]
+        self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+        cnt = self.statistics.get_counter('/nat64/in2out/icmp')[0]
+        self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+        cnt = self.statistics.get_counter('/nat64/in2out/drops')[0]
+        self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
+
+        # out2in
+        tcpn = self.statistics.get_counter('/nat64/out2in/tcp')[0]
+        udpn = self.statistics.get_counter('/nat64/out2in/udp')[0]
+        icmpn = self.statistics.get_counter('/nat64/out2in/icmp')[0]
+        drops = self.statistics.get_counter('/nat64/out2in/drops')[0]
+
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+        self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+        if_idx = self.pg1.sw_if_index
+        cnt = self.statistics.get_counter('/nat64/out2in/tcp')[0]
+        self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+        cnt = self.statistics.get_counter('/nat64/out2in/udp')[0]
+        self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+        cnt = self.statistics.get_counter('/nat64/out2in/icmp')[0]
+        self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+        cnt = self.statistics.get_counter('/nat64/out2in/drops')[0]
+        self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
+
+        bibs = self.statistics.get_counter('/nat64/total-bibs')
+        self.assertEqual(bibs[0][0], 3)
+        sessions = self.statistics.get_counter('/nat64/total-sessions')
+        self.assertEqual(sessions[0][0], 3)
+
+        # in2out
+        pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+        ses_num_end = self.nat64_get_ses_num()
+
+        self.assertEqual(ses_num_end - ses_num_start, 3)
+
+        # tenant with specific VRF
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
+                                                end_addr=self.vrf1_nat_addr,
+                                                vrf_id=self.vrf1_id, is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg2.sw_if_index)
+
+        pkts = self.create_stream_in_ip6(self.pg2, self.pg1)
+        self.pg2.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg2.get_capture(len(pkts))
+        self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg2.remote_ip6)
+
+    def test_static(self):
+        """ NAT64 static translation test """
+        self.tcp_port_in = 60303
+        self.udp_port_in = 60304
+        self.icmp_id_in = 60305
+        self.tcp_port_out = 60303
+        self.udp_port_out = 60304
+        self.icmp_id_out = 60305
+
+        ses_num_start = self.nat64_get_ses_num()
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+                                           o_addr=self.nat_addr,
+                                           i_port=self.tcp_port_in,
+                                           o_port=self.tcp_port_out,
+                                           proto=IP_PROTOS.tcp, vrf_id=0,
+                                           is_add=1)
+        self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+                                           o_addr=self.nat_addr,
+                                           i_port=self.udp_port_in,
+                                           o_port=self.udp_port_out,
+                                           proto=IP_PROTOS.udp, vrf_id=0,
+                                           is_add=1)
+        self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+                                           o_addr=self.nat_addr,
+                                           i_port=self.icmp_id_in,
+                                           o_port=self.icmp_id_out,
+                                           proto=IP_PROTOS.icmp, vrf_id=0,
+                                           is_add=1)
+
+        # in2out
+        pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.nat_addr,
+                                dst_ip=self.pg1.remote_ip4, same_port=True)
+
+        # out2in
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+        self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+        ses_num_end = self.nat64_get_ses_num()
+
+        self.assertEqual(ses_num_end - ses_num_start, 3)
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_session_timeout(self):
+        """ NAT64 session timeout """
+        self.icmp_id_in = 1234
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.nat64_set_timeouts(udp=300, tcp_established=5,
+                                     tcp_transitory=5,
+                                     icmp=5)
+
+        pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+
+        ses_num_before_timeout = self.nat64_get_ses_num()
+
+        sleep(15)
+
+        # ICMP and TCP session after timeout
+        ses_num_after_timeout = self.nat64_get_ses_num()
+        self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
+
+    def test_icmp_error(self):
+        """ NAT64 ICMP Error message translation """
+        self.tcp_port_in = 6303
+        self.udp_port_in = 6304
+        self.icmp_id_in = 6305
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        # send some packets to create sessions
+        pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture_ip4 = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture_ip4,
+                                nat_ip=self.nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture_ip6 = self.pg0.get_capture(len(pkts))
+        ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+        self.verify_capture_in_ip6(capture_ip6, ip[IPv6].src,
+                                   self.pg0.remote_ip6)
+
+        # in2out
+        pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IPv6(src=self.pg0.remote_ip6, dst=ip[IPv6].src) /
+                ICMPv6DestUnreach(code=1) /
+                packet[IPv6] for packet in capture_ip6]
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IP].src, self.nat_addr)
+                self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+                self.assertEqual(packet[ICMP].type, 3)
+                self.assertEqual(packet[ICMP].code, 13)
+                inner = packet[IPerror]
+                self.assertEqual(inner.src, self.pg1.remote_ip4)
+                self.assertEqual(inner.dst, self.nat_addr)
+                self.assert_packet_checksums_valid(packet)
+                if inner.haslayer(TCPerror):
+                    self.assertEqual(inner[TCPerror].dport, self.tcp_port_out)
+                elif inner.haslayer(UDPerror):
+                    self.assertEqual(inner[UDPerror].dport, self.udp_port_out)
+                else:
+                    self.assertEqual(inner[ICMPerror].id, self.icmp_id_out)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # out2in
+        pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+                ICMP(type=3, code=13) /
+                packet[IP] for packet in capture_ip4]
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, ip.src)
+                self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+                icmp = packet[ICMPv6DestUnreach]
+                self.assertEqual(icmp.code, 1)
+                inner = icmp[IPerror6]
+                self.assertEqual(inner.src, self.pg0.remote_ip6)
+                self.assertEqual(inner.dst, ip.src)
+                self.assert_icmpv6_checksum_valid(packet)
+                if inner.haslayer(TCPerror):
+                    self.assertEqual(inner[TCPerror].sport, self.tcp_port_in)
+                elif inner.haslayer(UDPerror):
+                    self.assertEqual(inner[UDPerror].sport, self.udp_port_in)
+                else:
+                    self.assertEqual(inner[ICMPv6EchoRequest].id,
+                                     self.icmp_id_in)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+    def test_hairpinning(self):
+        """ NAT64 hairpinning """
+
+        client = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        server_tcp_in_port = 22
+        server_tcp_out_port = 4022
+        server_udp_in_port = 23
+        server_udp_out_port = 4023
+        client_tcp_in_port = 1234
+        client_udp_in_port = 1235
+        client_tcp_out_port = 0
+        client_udp_out_port = 0
+        ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
+        nat_addr_ip6 = ip.src
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+                                           o_addr=self.nat_addr,
+                                           i_port=server_tcp_in_port,
+                                           o_port=server_tcp_out_port,
+                                           proto=IP_PROTOS.tcp, vrf_id=0,
+                                           is_add=1)
+        self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+                                           o_addr=self.nat_addr,
+                                           i_port=server_udp_in_port,
+                                           o_port=server_udp_out_port,
+                                           proto=IP_PROTOS.udp, vrf_id=0,
+                                           is_add=1)
+
+        # client to server
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=client.ip6, dst=nat_addr_ip6) /
+             TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=client.ip6, dst=nat_addr_ip6) /
+             UDP(sport=client_udp_in_port, dport=server_udp_out_port))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+                self.assertEqual(packet[IPv6].dst, server.ip6)
+                self.assert_packet_checksums_valid(packet)
+                if packet.haslayer(TCP):
+                    self.assertNotEqual(packet[TCP].sport, client_tcp_in_port)
+                    self.assertEqual(packet[TCP].dport, server_tcp_in_port)
+                    client_tcp_out_port = packet[TCP].sport
+                else:
+                    self.assertNotEqual(packet[UDP].sport, client_udp_in_port)
+                    self.assertEqual(packet[UDP].dport, server_udp_in_port)
+                    client_udp_out_port = packet[UDP].sport
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # server to client
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=server.ip6, dst=nat_addr_ip6) /
+             TCP(sport=server_tcp_in_port, dport=client_tcp_out_port))
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=server.ip6, dst=nat_addr_ip6) /
+             UDP(sport=server_udp_in_port, dport=client_udp_out_port))
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+                self.assertEqual(packet[IPv6].dst, client.ip6)
+                self.assert_packet_checksums_valid(packet)
+                if packet.haslayer(TCP):
+                    self.assertEqual(packet[TCP].sport, server_tcp_out_port)
+                    self.assertEqual(packet[TCP].dport, client_tcp_in_port)
+                else:
+                    self.assertEqual(packet[UDP].sport, server_udp_out_port)
+                    self.assertEqual(packet[UDP].dport, client_udp_in_port)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # ICMP error
+        pkts = []
+        pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                IPv6(src=client.ip6, dst=nat_addr_ip6) /
+                ICMPv6DestUnreach(code=1) /
+                packet[IPv6] for packet in capture]
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+                self.assertEqual(packet[IPv6].dst, server.ip6)
+                icmp = packet[ICMPv6DestUnreach]
+                self.assertEqual(icmp.code, 1)
+                inner = icmp[IPerror6]
+                self.assertEqual(inner.src, server.ip6)
+                self.assertEqual(inner.dst, nat_addr_ip6)
+                self.assert_packet_checksums_valid(packet)
+                if inner.haslayer(TCPerror):
+                    self.assertEqual(inner[TCPerror].sport, server_tcp_in_port)
+                    self.assertEqual(inner[TCPerror].dport,
+                                     client_tcp_out_port)
+                else:
+                    self.assertEqual(inner[UDPerror].sport, server_udp_in_port)
+                    self.assertEqual(inner[UDPerror].dport,
+                                     client_udp_out_port)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+    def test_prefix(self):
+        """ NAT64 Network-Specific Prefix """
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
+                                                end_addr=self.vrf1_nat_addr,
+                                                vrf_id=self.vrf1_id, is_add=1)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg2.sw_if_index)
+
+        # Add global prefix
+        global_pref64 = "2001:db8::"
+        global_pref64_len = 32
+        global_pref64_str = "{}/{}".format(global_pref64, global_pref64_len)
+        self.vapi.nat64_add_del_prefix(prefix=global_pref64_str, vrf_id=0,
+                                       is_add=1)
+
+        prefix = self.vapi.nat64_prefix_dump()
+        self.assertEqual(len(prefix), 1)
+        self.assertEqual(str(prefix[0].prefix), global_pref64_str)
+        self.assertEqual(prefix[0].vrf_id, 0)
+
+        # Add tenant specific prefix
+        vrf1_pref64 = "2001:db8:122:300::"
+        vrf1_pref64_len = 56
+        vrf1_pref64_str = "{}/{}".format(vrf1_pref64, vrf1_pref64_len)
+        self.vapi.nat64_add_del_prefix(prefix=vrf1_pref64_str,
+                                       vrf_id=self.vrf1_id, is_add=1)
+
+        prefix = self.vapi.nat64_prefix_dump()
+        self.assertEqual(len(prefix), 2)
+
+        # Global prefix
+        pkts = self.create_stream_in_ip6(self.pg0,
+                                         self.pg1,
+                                         pref=global_pref64,
+                                         plen=global_pref64_len)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        dst_ip = self.compose_ip6(self.pg1.remote_ip4,
+                                  global_pref64,
+                                  global_pref64_len)
+        self.verify_capture_in_ip6(capture, dst_ip, self.pg0.remote_ip6)
+
+        # Tenant specific prefix
+        pkts = self.create_stream_in_ip6(self.pg2,
+                                         self.pg1,
+                                         pref=vrf1_pref64,
+                                         plen=vrf1_pref64_len)
+        self.pg2.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+        self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
+                                dst_ip=self.pg1.remote_ip4)
+
+        pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg2.get_capture(len(pkts))
+        dst_ip = self.compose_ip6(self.pg1.remote_ip4,
+                                  vrf1_pref64,
+                                  vrf1_pref64_len)
+        self.verify_capture_in_ip6(capture, dst_ip, self.pg2.remote_ip6)
+
+    def test_unknown_proto(self):
+        """ NAT64 translate packet with unknown protocol """
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+        remote_ip6 = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+
+        # in2out
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=remote_ip6) /
+             TCP(sport=self.tcp_port_in, dport=20))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=remote_ip6, nh=47) /
+             GRE() /
+             IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IP].src, self.nat_addr)
+            self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+            self.assertEqual(packet.haslayer(GRE), 1)
+            self.assert_packet_checksums_valid(packet)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # out2in
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg1.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IPv6].src, remote_ip6)
+            self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+            self.assertEqual(packet[IPv6].nh, 47)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_hairpinning_unknown_proto(self):
+        """ NAT64 translate packet with unknown protocol - hairpinning """
+
+        client = self.pg0.remote_hosts[0]
+        server = self.pg0.remote_hosts[1]
+        server_tcp_in_port = 22
+        server_tcp_out_port = 4022
+        client_tcp_in_port = 1234
+        client_tcp_out_port = 1235
+        server_nat_ip = "10.0.0.100"
+        client_nat_ip = "10.0.0.110"
+        server_nat_ip6 = self.compose_ip6(server_nat_ip, '64:ff9b::', 96)
+        client_nat_ip6 = self.compose_ip6(client_nat_ip, '64:ff9b::', 96)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=server_nat_ip,
+                                                end_addr=client_nat_ip,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+                                           o_addr=server_nat_ip,
+                                           i_port=server_tcp_in_port,
+                                           o_port=server_tcp_out_port,
+                                           proto=IP_PROTOS.tcp, vrf_id=0,
+                                           is_add=1)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+                                           o_addr=server_nat_ip, i_port=0,
+                                           o_port=0,
+                                           proto=IP_PROTOS.gre, vrf_id=0,
+                                           is_add=1)
+
+        self.vapi.nat64_add_del_static_bib(i_addr=client.ip6n,
+                                           o_addr=client_nat_ip,
+                                           i_port=client_tcp_in_port,
+                                           o_port=client_tcp_out_port,
+                                           proto=IP_PROTOS.tcp, vrf_id=0,
+                                           is_add=1)
+
+        # client to server
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=client.ip6, dst=server_nat_ip6) /
+             TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=client.ip6, dst=server_nat_ip6, nh=IP_PROTOS.gre) /
+             GRE() /
+             IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IPv6].src, client_nat_ip6)
+            self.assertEqual(packet[IPv6].dst, server.ip6)
+            self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+        # server to client
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=server.ip6, dst=client_nat_ip6, nh=IP_PROTOS.gre) /
+             GRE() /
+             IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+             TCP(sport=1234, dport=1234))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg0.get_capture(1)
+        packet = p[0]
+        try:
+            self.assertEqual(packet[IPv6].src, server_nat_ip6)
+            self.assertEqual(packet[IPv6].dst, client.ip6)
+            self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+    def test_one_armed_nat64(self):
+        """ One armed NAT64 """
+        external_port = 0
+        remote_host_ip6 = self.compose_ip6(self.pg3.remote_ip4,
+                                           '64:ff9b::',
+                                           96)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg3.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg3.sw_if_index)
+
+        # in2out
+        p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
+             IPv6(src=self.pg3.remote_ip6, dst=remote_host_ip6) /
+             TCP(sport=12345, dport=80))
+        self.pg3.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IP]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, self.nat_addr)
+            self.assertEqual(ip.dst, self.pg3.remote_ip4)
+            self.assertNotEqual(tcp.sport, 12345)
+            external_port = tcp.sport
+            self.assertEqual(tcp.dport, 80)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+        # out2in
+        p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
+             IP(src=self.pg3.remote_ip4, dst=self.nat_addr) /
+             TCP(sport=80, dport=external_port))
+        self.pg3.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg3.get_capture(1)
+        p = capture[0]
+        try:
+            ip = p[IPv6]
+            tcp = p[TCP]
+            self.assertEqual(ip.src, remote_host_ip6)
+            self.assertEqual(ip.dst, self.pg3.remote_ip6)
+            self.assertEqual(tcp.sport, 80)
+            self.assertEqual(tcp.dport, 12345)
+            self.assert_packet_checksums_valid(p)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", p))
+            raise
+
+    def test_frag_in_order(self):
+        """ NAT64 translate fragments arriving in order """
+        self.tcp_port_in = random.randint(1025, 65535)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        # in2out
+        data = b'a' * 200
+        pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
+                                           self.tcp_port_in, 20, data)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg1.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.nat_addr,
+                                        self.pg1.remote_ip4)
+        self.assertEqual(p[TCP].dport, 20)
+        self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
+        self.tcp_port_out = p[TCP].sport
+        self.assertEqual(data, p[Raw].load)
+
+        # out2in
+        data = b"A" * 4 + b"b" * 16 + b"C" * 3
+        pkts = self.create_stream_frag(self.pg1,
+                                       self.nat_addr,
+                                       20,
+                                       self.tcp_port_out,
+                                       data)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        self.logger.debug(ppc("Captured:", frags))
+        src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+        p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
+        self.assertEqual(p[TCP].sport, 20)
+        self.assertEqual(p[TCP].dport, self.tcp_port_in)
+        self.assertEqual(data, p[Raw].load)
+
+    def test_reass_hairpinning(self):
+        """ NAT64 fragments hairpinning """
+        data = b'a' * 200
+        server = self.pg0.remote_hosts[1]
+        server_in_port = random.randint(1025, 65535)
+        server_out_port = random.randint(1025, 65535)
+        client_in_port = random.randint(1025, 65535)
+        ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
+        nat_addr_ip6 = ip.src
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        # add static BIB entry for server
+        self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+                                           o_addr=self.nat_addr,
+                                           i_port=server_in_port,
+                                           o_port=server_out_port,
+                                           proto=IP_PROTOS.tcp, vrf_id=0,
+                                           is_add=1)
+
+        # send packet from host to server
+        pkts = self.create_stream_frag_ip6(self.pg0,
+                                           self.nat_addr,
+                                           client_in_port,
+                                           server_out_port,
+                                           data)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        self.logger.debug(ppc("Captured:", frags))
+        p = self.reass_frags_and_verify_ip6(frags, nat_addr_ip6, server.ip6)
+        self.assertNotEqual(p[TCP].sport, client_in_port)
+        self.assertEqual(p[TCP].dport, server_in_port)
+        self.assertEqual(data, p[Raw].load)
+
+    def test_frag_out_of_order(self):
+        """ NAT64 translate fragments arriving out of order """
+        self.tcp_port_in = random.randint(1025, 65535)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        # in2out
+        data = b'a' * 200
+        pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
+                                           self.tcp_port_in, 20, data)
+        pkts.reverse()
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg1.get_capture(len(pkts))
+        p = self.reass_frags_and_verify(frags,
+                                        self.nat_addr,
+                                        self.pg1.remote_ip4)
+        self.assertEqual(p[TCP].dport, 20)
+        self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
+        self.tcp_port_out = p[TCP].sport
+        self.assertEqual(data, p[Raw].load)
+
+        # out2in
+        data = b"A" * 4 + b"B" * 16 + b"C" * 3
+        pkts = self.create_stream_frag(self.pg1,
+                                       self.nat_addr,
+                                       20,
+                                       self.tcp_port_out,
+                                       data)
+        pkts.reverse()
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        frags = self.pg0.get_capture(len(pkts))
+        src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+        p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
+        self.assertEqual(p[TCP].sport, 20)
+        self.assertEqual(p[TCP].dport, self.tcp_port_in)
+        self.assertEqual(data, p[Raw].load)
+
+    def test_interface_addr(self):
+        """ Acquire NAT64 pool addresses from interface """
+        self.vapi.nat64_add_del_interface_addr(
+            is_add=1,
+            sw_if_index=self.pg4.sw_if_index)
+
+        # no address in NAT64 pool
+        addresses = self.vapi.nat44_address_dump()
+        self.assertEqual(0, len(addresses))
+
+        # configure interface address and check NAT64 address pool
+        self.pg4.config_ip4()
+        addresses = self.vapi.nat64_pool_addr_dump()
+        self.assertEqual(len(addresses), 1)
+
+        self.assertEqual(str(addresses[0].address),
+                         self.pg4.local_ip4)
+
+        # remove interface address and check NAT64 address pool
+        self.pg4.unconfig_ip4()
+        addresses = self.vapi.nat64_pool_addr_dump()
+        self.assertEqual(0, len(addresses))
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_ipfix_max_bibs_sessions(self):
+        """ IPFIX logging maximum session and BIB entries exceeded """
+        max_bibs = 1280
+        max_sessions = 2560
+        remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+                                           '64:ff9b::',
+                                           96)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+
+        pkts = []
+        src = ""
+        for i in range(0, max_bibs):
+            src = "fd01:aa::%x" % (i)
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IPv6(src=src, dst=remote_host_ip6) /
+                 TCP(sport=12345, dport=80))
+            pkts.append(p)
+            p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                 IPv6(src=src, dst=remote_host_ip6) /
+                 TCP(sport=12345, dport=22))
+            pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.get_capture(max_sessions)
+
+        self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+                                     src_address=self.pg3.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10)
+        self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                           src_port=self.ipfix_src_port,
+                                           enable=1)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=src, dst=remote_host_ip6) /
+             TCP(sport=12345, dport=25))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sleep(1)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(7)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_max_sessions(data, max_sessions)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+             TCP(sport=12345, dport=80))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.pg1.assert_nothing_captured()
+        sleep(1)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(1)
+        # verify events in data set
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                self.verify_ipfix_max_bibs(data, max_bibs)
+
+    def test_ipfix_bib_ses(self):
+        """ IPFIX logging NAT64 BIB/session create and delete events """
+        self.tcp_port_in = random.randint(1025, 65535)
+        remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+                                           '64:ff9b::',
+                                           96)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+                                     src_address=self.pg3.local_ip4,
+                                     path_mtu=512,
+                                     template_interval=10)
+        self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                           src_port=self.ipfix_src_port,
+                                           enable=1)
+
+        # Create
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+             TCP(sport=self.tcp_port_in, dport=25))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+        self.tcp_port_out = p[0][TCP].sport
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(8)
+        ipfix = IPFIXDecoder()
+        # first load template
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Template):
+                ipfix.add_template(p.getlayer(Template))
+        # verify events in data set
+        for p in capture:
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                if scapy.compat.orb(data[0][230]) == 10:
+                    self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6)
+                elif scapy.compat.orb(data[0][230]) == 6:
+                    self.verify_ipfix_nat64_ses(data,
+                                                1,
+                                                self.pg0.remote_ip6,
+                                                self.pg1.remote_ip4,
+                                                25)
+                else:
+                    self.logger.error(ppp("Unexpected or invalid packet: ", p))
+
+        # Delete
+        self.pg_enable_capture(self.pg_interfaces)
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=0)
+        self.vapi.ipfix_flush()
+        capture = self.pg3.get_capture(2)
+        # verify events in data set
+        for p in capture:
+            self.assertTrue(p.haslayer(IPFIX))
+            self.assertEqual(p[IP].src, self.pg3.local_ip4)
+            self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+            self.assertEqual(p[UDP].dport, 4739)
+            self.assertEqual(p[IPFIX].observationDomainID,
+                             self.ipfix_domain_id)
+            if p.haslayer(Data):
+                data = ipfix.decode_data_set(p.getlayer(Set))
+                if scapy.compat.orb(data[0][230]) == 11:
+                    self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6)
+                elif scapy.compat.orb(data[0][230]) == 7:
+                    self.verify_ipfix_nat64_ses(data,
+                                                0,
+                                                self.pg0.remote_ip6,
+                                                self.pg1.remote_ip4,
+                                                25)
+                else:
+                    self.logger.error(ppp("Unexpected or invalid packet: ", p))
+
+    def test_syslog_sess(self):
+        """ Test syslog session creation and deletion """
+        self.tcp_port_in = random.randint(1025, 65535)
+        remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+                                           '64:ff9b::',
+                                           96)
+
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=1)
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.syslog_set_filter(
+            self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
+        self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
+
+        p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+             TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        p = self.pg1.get_capture(1)
+        self.tcp_port_out = p[0][TCP].sport
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_sess(capture[0][Raw].load, is_ip6=True)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+                                                end_addr=self.nat_addr,
+                                                vrf_id=0xFFFFFFFF,
+                                                is_add=0)
+        capture = self.pg3.get_capture(1)
+        self.verify_syslog_sess(capture[0][Raw].load, False, True)
+
+    def nat64_get_ses_num(self):
+        """
+        Return number of active NAT64 sessions.
+        """
+        st = self.vapi.nat64_st_dump(proto=255)
+        return len(st)
+
+    def clear_nat64(self):
+        """
+        Clear NAT64 configuration.
+        """
+        self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+                                           src_port=self.ipfix_src_port,
+                                           enable=0)
+        self.ipfix_src_port = 4739
+        self.ipfix_domain_id = 1
+
+        self.vapi.syslog_set_filter(
+            self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
+
+        self.vapi.nat64_set_timeouts(udp=300, tcp_established=7440,
+                                     tcp_transitory=240, icmp=60)
+
+        interfaces = self.vapi.nat64_interface_dump()
+        for intf in interfaces:
+            self.vapi.nat64_add_del_interface(is_add=0, flags=intf.flags,
+                                              sw_if_index=intf.sw_if_index)
+
+        bib = self.vapi.nat64_bib_dump(proto=255)
+        for bibe in bib:
+            if bibe.flags & self.config_flags.NAT_IS_STATIC:
+                self.vapi.nat64_add_del_static_bib(i_addr=bibe.i_addr,
+                                                   o_addr=bibe.o_addr,
+                                                   i_port=bibe.i_port,
+                                                   o_port=bibe.o_port,
+                                                   proto=bibe.proto,
+                                                   vrf_id=bibe.vrf_id,
+                                                   is_add=0)
+
+        adresses = self.vapi.nat64_pool_addr_dump()
+        for addr in adresses:
+            self.vapi.nat64_add_del_pool_addr_range(start_addr=addr.address,
+                                                    end_addr=addr.address,
+                                                    vrf_id=addr.vrf_id,
+                                                    is_add=0)
+
+        prefixes = self.vapi.nat64_prefix_dump()
+        for prefix in prefixes:
+            self.vapi.nat64_add_del_prefix(prefix=str(prefix.prefix),
+                                           vrf_id=prefix.vrf_id, is_add=0)
+
+        bibs = self.statistics.get_counter('/nat64/total-bibs')
+        self.assertEqual(bibs[0][0], 0)
+        sessions = self.statistics.get_counter('/nat64/total-sessions')
+        self.assertEqual(sessions[0][0], 0)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_nat66.py b/test/test_nat66.py
new file mode 100644
index 0000000..acda72b
--- /dev/null
+++ b/test/test_nat66.py
@@ -0,0 +1,179 @@
+#!/usr/bin/env python3
+
+import ipaddress
+import random
+import socket
+import struct
+import unittest
+from io import BytesIO
+from time import sleep
+
+import scapy.compat
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
+    IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
+    PacketListField
+from scapy.data import IP_PROTOS
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
+    ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
+from scapy.layers.l2 import Ether, ARP, GRE
+from scapy.packet import Raw
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ip4_range
+from util import ppc, ppp
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_neighbor import VppNeighbor
+from vpp_papi import VppEnum
+
+
+class TestNAT66(VppTestCase):
+    """ NAT66 Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestNAT66, cls).setUpClass()
+
+        cls.nat_addr = 'fd01:ff::2'
+        cls.create_pg_interfaces(range(2))
+        cls.interfaces = list(cls.pg_interfaces)
+
+        for i in cls.interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.configure_ipv6_neighbors()
+
+    @property
+    def config_flags(self):
+        return VppEnum.vl_api_nat_config_flags_t
+
+    def plugin_enable(self):
+        self.vapi.nat66_plugin_enable_disable(enable=1)
+
+    def plugin_disable(self):
+        self.vapi.nat66_plugin_enable_disable(enable=0)
+
+    def setUp(self):
+        super(TestNAT66, self).setUp()
+        self.plugin_enable()
+
+    def tearDown(self):
+        super(TestNAT66, self).tearDown()
+        if not self.vpp_dead:
+            self.plugin_disable()
+
+    def test_static(self):
+        """ 1:1 NAT66 test """
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat66_add_del_interface(is_add=1,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.nat66_add_del_static_mapping(
+            local_ip_address=self.pg0.remote_ip6,
+            external_ip_address=self.nat_addr,
+            is_add=1)
+
+        # in2out
+        pkts = []
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+             TCP())
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+             UDP())
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+             ICMPv6EchoRequest())
+        pkts.append(p)
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+             GRE() / IP() / TCP())
+        pkts.append(p)
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(len(pkts))
+
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, self.nat_addr)
+                self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
+                self.assert_packet_checksums_valid(packet)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # out2in
+        pkts = []
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+             TCP())
+        pkts.append(p)
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+             UDP())
+        pkts.append(p)
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+             ICMPv6EchoReply())
+        pkts.append(p)
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+             GRE() / IP() / TCP())
+        pkts.append(p)
+        self.pg1.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg0.get_capture(len(pkts))
+        for packet in capture:
+            try:
+                self.assertEqual(packet[IPv6].src, self.pg1.remote_ip6)
+                self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+                self.assert_packet_checksums_valid(packet)
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        sm = self.vapi.nat66_static_mapping_dump()
+        self.assertEqual(len(sm), 1)
+        self.assertEqual(sm[0].total_pkts, 8)
+
+    def test_check_no_translate(self):
+        """ NAT66 translate only when egress interface is outside interface """
+        flags = self.config_flags.NAT_IS_INSIDE
+        self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg0.sw_if_index)
+        self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
+                                          sw_if_index=self.pg1.sw_if_index)
+        self.vapi.nat66_add_del_static_mapping(
+            local_ip_address=self.pg0.remote_ip6,
+            external_ip_address=self.nat_addr,
+            is_add=1)
+
+        # in2out
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+             UDP())
+        self.pg0.add_stream([p])
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        capture = self.pg1.get_capture(1)
+        packet = capture[0]
+        try:
+            self.assertEqual(packet[IPv6].src, self.pg0.remote_ip6)
+            self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
+        except:
+            self.logger.error(ppp("Unexpected or invalid packet:", packet))
+            raise
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_ping.py b/test/test_ping.py
new file mode 100644
index 0000000..8c5c087
--- /dev/null
+++ b/test/test_ping.py
@@ -0,0 +1,176 @@
+import socket
+
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+
+from framework import VppTestCase
+from util import ppp
+from vpp_ip_route import VppIpInterfaceAddress, VppIpRoute, VppRoutePath
+from vpp_neighbor import VppNeighbor
+
+""" TestPing is a subclass of  VPPTestCase classes.
+
+Basic test for sanity check of the ping.
+
+"""
+
+
+class TestPing(VppTestCase):
+    """ Ping Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestPing, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.interfaces = list(cls.pg_interfaces)
+
+            for i in cls.interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.config_ip6()
+                i.disable_ipv6_ra()
+                i.resolve_arp()
+                i.resolve_ndp()
+        except Exception:
+            super(TestPing, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestPing, cls).tearDownClass()
+
+    def tearDown(self):
+        super(TestPing, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show hardware"))
+
+    def verify_ping_request(self, p, src, dst, seq):
+        ip = p[IP]
+        self.assertEqual(ip.version, 4)
+        self.assertEqual(ip.flags, 0)
+        self.assertEqual(ip.src, src)
+        self.assertEqual(ip.dst, dst)
+        self.assertEqual(ip.proto, 1)
+        self.assertEqual(len(ip.options), 0)
+        self.assertGreaterEqual(ip.ttl, 254)
+        icmp = p[ICMP]
+        self.assertEqual(icmp.type, 8)
+        self.assertEqual(icmp.code, 0)
+        self.assertEqual(icmp.seq, seq)
+        return icmp
+
+    def test_ping_basic(self):
+        """ basic ping test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.logger.info(self.vapi.cli("show ip4 neighbors"))
+            self.logger.info(self.vapi.cli("show ip6 neighbors"))
+
+            remote_ip4 = self.pg1.remote_ip4
+            ping_cmd = "ping " + remote_ip4 + " interval 0.01 repeat 10"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+            out = self.pg1.get_capture(10)
+            icmp_id = None
+            icmp_seq = 1
+            for p in out:
+                icmp = self.verify_ping_request(p, self.pg1.local_ip4,
+                                                self.pg1.remote_ip4, icmp_seq)
+                icmp_seq = icmp_seq + 1
+                if icmp_id is None:
+                    icmp_id = icmp.id
+                else:
+                    self.assertEqual(icmp.id, icmp_id)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_ping_burst(self):
+        """ burst ping test """
+        try:
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            self.logger.info(self.vapi.cli("show ip neighbors"))
+
+            remote_ip4 = self.pg1.remote_ip4
+            ping_cmd = "ping " + remote_ip4 + " interval 0.01 burst 3"
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+            out = self.pg1.get_capture(3*5)
+            icmp_id = None
+            icmp_seq = 1
+            count = 0
+            for p in out:
+                icmp = self.verify_ping_request(p, self.pg1.local_ip4,
+                                                self.pg1.remote_ip4, icmp_seq)
+                count = count + 1
+                if count >= 3:
+                    icmp_seq = icmp_seq + 1
+                    count = 0
+                if icmp_id is None:
+                    icmp_id = icmp.id
+                else:
+                    self.assertEqual(icmp.id, icmp_id)
+        finally:
+            self.vapi.cli("show error")
+
+    def test_ping_src(self):
+        """ ping with source address set """
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.logger.info(self.vapi.cli("show ip4 neighbors"))
+        self.logger.info(self.vapi.cli("show ip6 neighbors"))
+
+        nbr_addr = "10.0.0.2"
+        VppIpInterfaceAddress(self, self.pg1, "10.0.0.1", 24).add_vpp_config()
+        VppNeighbor(self, self.pg1.sw_if_index,
+                    "00:11:22:33:44:55",
+                    nbr_addr).add_vpp_config()
+
+        ping_cmd = "ping %s interval 0.01 repeat 3" % self.pg1.remote_ip4
+        ret = self.vapi.cli(ping_cmd)
+        out = self.pg1.get_capture(3)
+        icmp_seq = 1
+        for p in out:
+            icmp = self.verify_ping_request(p, self.pg1.local_ip4,
+                                            self.pg1.remote_ip4, icmp_seq)
+            icmp_seq = icmp_seq + 1
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        ping_cmd = "ping %s interval 0.01 repeat 3" % nbr_addr
+        ret = self.vapi.cli(ping_cmd)
+        out = self.pg1.get_capture(3)
+        icmp_seq = 1
+        for p in out:
+            icmp = self.verify_ping_request(p, "10.0.0.1", nbr_addr, icmp_seq)
+            icmp_seq = icmp_seq + 1
+
+    def test_ping_fib_routed_dst(self):
+        """ ping destination routed according to FIB table """
+
+        try:
+            self.pg1.generate_remote_hosts(1)
+            self.pg_enable_capture(self.pg_interfaces)
+            self.pg_start()
+            routed_dst = "10.0.2.0"
+            self.logger.info(self.vapi.cli("show ip4 neighbors"))
+            VppIpRoute(self, routed_dst, 24,
+                       [VppRoutePath(self.pg1.remote_hosts[0].ip4,
+                                     self.pg1.sw_if_index)]).add_vpp_config()
+            ping_cmd = "ping %s interval 0.01 repeat 3" % routed_dst
+            ret = self.vapi.cli(ping_cmd)
+            self.logger.info(ret)
+            out = self.pg1.get_capture(3)
+            icmp_seq = 1
+            for p in out:
+                self.verify_ping_request(p, self.pg1.local_ip4, routed_dst,
+                                         icmp_seq)
+                icmp_seq = icmp_seq + 1
+        finally:
+            self.vapi.cli("show error")
diff --git a/test/test_pnat.py b/test/test_pnat.py
new file mode 100644
index 0000000..d5b6005
--- /dev/null
+++ b/test/test_pnat.py
@@ -0,0 +1,203 @@
+#!/usr/bin/env python3
+"""Policy 1:1 NAT functional tests"""
+
+import unittest
+from scapy.layers.inet import Ether, IP, UDP, ICMP
+from framework import VppTestCase, VppTestRunner
+from vpp_papi import VppEnum
+
+
+class TestPNAT(VppTestCase):
+    """ PNAT Test Case """
+    maxDiff = None
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestPNAT, cls).setUpClass()
+        cls.create_pg_interfaces(range(2))
+        cls.interfaces = list(cls.pg_interfaces)
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestPNAT, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestPNAT, self).setUp()
+        for i in self.interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+    def tearDown(self):
+        super(TestPNAT, self).tearDown()
+        if not self.vpp_dead:
+            for i in self.pg_interfaces:
+                i.unconfig_ip4()
+                i.admin_down()
+
+    def validate(self, rx, expected):
+        self.assertEqual(rx, expected.__class__(expected))
+
+    def validate_bytes(self, rx, expected):
+        self.assertEqual(rx, expected)
+
+    def ping_check(self):
+        """ Verify non matching traffic works. """
+        p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+
+        icmpecho = (IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                    ICMP())
+        reply = (IP(src=self.pg0.local_ip4, dst=self.pg0.remote_ip4) /
+                 ICMP(type='echo-reply'))
+        rx = self.send_and_expect(self.pg0, p_ether/icmpecho * 1, self.pg0)
+        for p in rx:
+            reply[IP].id = p[IP].id
+            self.validate(p[1], reply)
+
+    def test_pnat(self):
+        """ PNAT test """
+
+        PNAT_IP4_INPUT = VppEnum.vl_api_pnat_attachment_point_t.PNAT_IP4_INPUT
+        PNAT_IP4_OUTPUT = \
+            VppEnum.vl_api_pnat_attachment_point_t.PNAT_IP4_OUTPUT
+
+        tests = [
+            {
+                'input': PNAT_IP4_INPUT,
+                'sw_if_index': self.pg0.sw_if_index,
+                'match': {'mask': 0xa, 'dst': '10.10.10.10', 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0x2, 'dst': self.pg1.remote_ip4},
+                'send': (IP(src=self.pg0.remote_ip4, dst='10.10.10.10') /
+                         UDP(dport=6871)),
+                'reply': (IP(src=self.pg0.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(dport=6871))
+            },
+            {
+                'input': PNAT_IP4_OUTPUT,
+                'sw_if_index': self.pg1.sw_if_index,
+                'match': {'mask': 0x9, 'src': self.pg0.remote_ip4, 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0x1, 'src': '11.11.11.11'},
+                'send': (IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                         UDP(dport=6871)),
+                'reply': (IP(src='11.11.11.11', dst=self.pg1.remote_ip4) /
+                          UDP(dport=6871))
+            },
+            {
+                'input': PNAT_IP4_INPUT,
+                'sw_if_index': self.pg0.sw_if_index,
+                'match': {'mask': 0xa, 'dst': '10.10.10.10', 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0xa, 'dst': self.pg1.remote_ip4,
+                            'dport': 5555},
+                'send': (IP(src=self.pg0.remote_ip4, dst='10.10.10.10') /
+                         UDP(sport=65530, dport=6871)),
+                'reply': (IP(src=self.pg0.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(sport=65530, dport=5555))
+            },
+            {
+                'input': PNAT_IP4_INPUT,
+                'sw_if_index': self.pg0.sw_if_index,
+                'match': {'mask': 0xa, 'dst': self.pg1.remote_ip4, 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0x8, 'dport': 5555},
+                'send': (IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                         UDP(dport=6871, chksum=0)),
+                'reply': (IP(src=self.pg0.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(dport=5555, chksum=0))
+            },
+            {
+                'input': PNAT_IP4_INPUT,
+                'sw_if_index': self.pg0.sw_if_index,
+                'match': {'mask': 0x2, 'dst': self.pg1.remote_ip4, 'proto': 1},
+                'rewrite': {'mask': 0x1, 'src': '8.8.8.8'},
+                'send': (IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                         ICMP()),
+                'reply': IP(src='8.8.8.8', dst=self.pg1.remote_ip4)/ICMP(),
+            },
+        ]
+
+        p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+        for t in tests:
+            rv = self.vapi.pnat_binding_add(match=t['match'],
+                                            rewrite=t['rewrite'])
+            self.vapi.pnat_binding_attach(sw_if_index=t['sw_if_index'],
+                                          attachment=t['input'],
+                                          binding_index=rv.binding_index)
+
+            reply = t['reply']
+            reply[IP].ttl -= 1
+            rx = self.send_and_expect(self.pg0, p_ether/t['send']*1, self.pg1)
+            for p in rx:
+                # p.show2()
+                self.validate(p[1], reply)
+
+            self.ping_check()
+
+            self.vapi.pnat_binding_detach(sw_if_index=t['sw_if_index'],
+                                          attachment=t['input'],
+                                          binding_index=rv.binding_index)
+            self.vapi.pnat_binding_del(binding_index=rv.binding_index)
+
+    def test_pnat_show(self):
+        """ PNAT show tests """
+
+        PNAT_IP4_INPUT = VppEnum.vl_api_pnat_attachment_point_t.PNAT_IP4_INPUT
+        PNAT_IP4_OUTPUT = \
+            VppEnum.vl_api_pnat_attachment_point_t.PNAT_IP4_OUTPUT
+
+        tests = [
+            {
+                'input': PNAT_IP4_INPUT,
+                'sw_if_index': self.pg0.sw_if_index,
+                'match': {'mask': 0xa, 'dst': '10.10.10.10', 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0x2, 'dst': self.pg1.remote_ip4},
+                'send': (IP(src=self.pg0.remote_ip4, dst='10.10.10.10') /
+                         UDP(dport=6871)),
+                'reply': (IP(src=self.pg0.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(dport=6871))
+            },
+            {
+                'input': PNAT_IP4_OUTPUT,
+                'sw_if_index': self.pg1.sw_if_index,
+                'match': {'mask': 0x9, 'src': self.pg0.remote_ip4, 'proto': 17,
+                          'dport': 6871},
+                'rewrite': {'mask': 0x1, 'src': '11.11.11.11'},
+                'send': (IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                         UDP(dport=6871)),
+                'reply': (IP(src='11.11.11.11', dst=self.pg1.remote_ip4) /
+                          UDP(dport=6871))
+            },
+        ]
+        binding_index = []
+        for t in tests:
+            rv = self.vapi.pnat_binding_add(match=t['match'],
+                                            rewrite=t['rewrite'])
+            binding_index.append(rv.binding_index)
+            self.vapi.pnat_binding_attach(sw_if_index=t['sw_if_index'],
+                                          attachment=t['input'],
+                                          binding_index=rv.binding_index)
+
+        rv, l = self.vapi.pnat_bindings_get()
+        self.assertEqual(len(l), len(tests))
+
+        rv, l = self.vapi.pnat_interfaces_get()
+        self.assertEqual(len(l), 2)
+
+        self.logger.info(self.vapi.cli("show pnat translations"))
+        self.logger.info(self.vapi.cli("show pnat interfaces"))
+
+        for i, t in enumerate(tests):
+            self.vapi.pnat_binding_detach(sw_if_index=t['sw_if_index'],
+                                          attachment=t['input'],
+                                          binding_index=binding_index[i])
+            self.vapi.pnat_binding_del(binding_index=binding_index[i])
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_policer.py b/test/test_policer.py
new file mode 100644
index 0000000..6b15a02
--- /dev/null
+++ b/test/test_policer.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python3
+# Copyright (c) 2021 Graphiant, Inc.
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_policer import VppPolicer, PolicerAction
+
+# Default for the tests is 10s of "Green" packets at 8Mbps, ie. 10M bytes.
+# The policer helper CLI "sends" 500 byte packets, so default is 20000.
+
+TEST_RATE = 8000    # kbps
+TEST_BURST = 10000  # ms
+
+CIR_OK = 8500       # CIR in kbps, above test rate
+CIR_LOW = 7000      # CIR in kbps, below test rate
+EIR_OK = 9000       # EIR in kbps, above test rate
+EIR_LOW = 7500      # EIR in kbps, below test rate
+
+NUM_PKTS = 20000
+
+CBURST = 100000     # Committed burst in bytes
+EBURST = 200000     # Excess burst in bytes
+
+
+class TestPolicer(VppTestCase):
+    """ Policer Test Case """
+
+    def run_policer_test(self, type, cir, cb, eir, eb, rate=8000, burst=10000,
+                         colour=0):
+        """
+        Configure a Policer and push traffic through it.
+        """
+        types = {
+            '1R2C': 0,
+            '1R3C': 1,
+            '2R3C': 3,
+        }
+
+        pol_type = types.get(type)
+        policer = VppPolicer(self, "pol1", cir, eir, cb, eb, rate_type=0,
+                             type=pol_type, color_aware=colour)
+        policer.add_vpp_config()
+
+        error = self.vapi.cli(
+            f"test policing index {policer.policer_index} rate {rate} "
+            f"burst {burst} colour {colour}")
+
+        stats = policer.get_stats()
+        policer.remove_vpp_config()
+
+        return stats
+
+    def test_policer_1r2c(self):
+        """ Single rate, 2 colour policer """
+        stats = self.run_policer_test("1R2C", CIR_OK, CBURST, 0, 0)
+        self.assertEqual(stats['conform_packets'], NUM_PKTS)
+
+        stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0)
+        self.assertLess(stats['conform_packets'], NUM_PKTS)
+        self.assertEqual(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0, colour=2)
+        self.assertEqual(stats['violate_packets'], NUM_PKTS)
+
+    def test_policer_1r3c(self):
+        """ Single rate, 3 colour policer """
+        stats = self.run_policer_test("1R3C", CIR_OK, CBURST, 0, 0)
+        self.assertEqual(stats['conform_packets'], NUM_PKTS)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST)
+        self.assertLess(stats['conform_packets'], NUM_PKTS)
+        self.assertGreater(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST,
+                                      colour=1)
+        self.assertEqual(stats['conform_packets'], 0)
+        self.assertGreater(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST,
+                                      colour=2)
+        self.assertEqual(stats['violate_packets'], NUM_PKTS)
+
+    def test_policer_2r3c(self):
+        """ Dual rate, 3 colour policer """
+        stats = self.run_policer_test("2R3C", CIR_OK, CBURST, EIR_OK, EBURST)
+        self.assertEqual(stats['conform_packets'], NUM_PKTS)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST)
+        self.assertLess(stats['conform_packets'], NUM_PKTS)
+        self.assertGreater(stats['exceed_packets'], 0)
+        self.assertEqual(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST)
+        self.assertLess(stats['conform_packets'], NUM_PKTS)
+        self.assertGreater(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST,
+                                      colour=1)
+        self.assertEqual(stats['exceed_packets'], NUM_PKTS)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST,
+                                      colour=1)
+        self.assertEqual(stats['conform_packets'], 0)
+        self.assertGreater(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST,
+                                      colour=2)
+        self.assertEqual(stats['violate_packets'], NUM_PKTS)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_policer_input.py b/test/test_policer_input.py
new file mode 100644
index 0000000..c95f664
--- /dev/null
+++ b/test/test_policer_input.py
@@ -0,0 +1,146 @@
+#!/usr/bin/env python3
+# Copyright (c) 2021 Graphiant, Inc.
+
+import unittest
+import scapy.compat
+from scapy.layers.inet import IP, UDP
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from framework import VppTestCase, VppTestRunner
+from vpp_papi import VppEnum
+from vpp_policer import VppPolicer, PolicerAction
+
+NUM_PKTS = 67
+
+
+class TestPolicerInput(VppTestCase):
+    """ Policer on an input interface """
+    vpp_worker_count = 2
+
+    def setUp(self):
+        super(TestPolicerInput, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+        self.pkt = (Ether(src=self.pg0.remote_mac,
+                          dst=self.pg0.local_mac) /
+                    IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+                    UDP(sport=1234, dport=1234) /
+                    Raw(b'\xa5' * 100))
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.admin_down()
+        super(TestPolicerInput, self).tearDown()
+
+    def test_policer_input(self):
+        """ Input Policing """
+        pkts = self.pkt * NUM_PKTS
+
+        action_tx = PolicerAction(
+            VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+            0)
+        policer = VppPolicer(self, "pol1", 80, 0, 1000, 0,
+                             conform_action=action_tx,
+                             exceed_action=action_tx,
+                             violate_action=action_tx)
+        policer.add_vpp_config()
+
+        # Start policing on pg0
+        policer.apply_vpp_config(self.pg0.sw_if_index, True)
+
+        rx = self.send_and_expect(self.pg0, pkts, self.pg1, worker=0)
+        stats = policer.get_stats()
+
+        # Single rate, 2 colour policer - expect conform, violate but no exceed
+        self.assertGreater(stats['conform_packets'], 0)
+        self.assertEqual(stats['exceed_packets'], 0)
+        self.assertGreater(stats['violate_packets'], 0)
+
+        # Stop policing on pg0
+        policer.apply_vpp_config(self.pg0.sw_if_index, False)
+
+        rx = self.send_and_expect(self.pg0, pkts, self.pg1, worker=0)
+
+        statsnew = policer.get_stats()
+
+        # No new packets counted
+        self.assertEqual(stats, statsnew)
+
+        policer.remove_vpp_config()
+
+    def test_policer_handoff(self):
+        """ Worker thread handoff """
+        pkts = self.pkt * NUM_PKTS
+
+        action_tx = PolicerAction(
+            VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+            0)
+        policer = VppPolicer(self, "pol2", 80, 0, 1000, 0,
+                             conform_action=action_tx,
+                             exceed_action=action_tx,
+                             violate_action=action_tx)
+        policer.add_vpp_config()
+
+        # Bind the policer to worker 1
+        policer.bind_vpp_config(1, True)
+
+        # Start policing on pg0
+        policer.apply_vpp_config(self.pg0.sw_if_index, True)
+
+        for worker in [0, 1]:
+            self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+            self.logger.debug(self.vapi.cli("show trace max 100"))
+
+        stats = policer.get_stats()
+        stats0 = policer.get_stats(worker=0)
+        stats1 = policer.get_stats(worker=1)
+
+        # Worker 1, should have done all the policing
+        self.assertEqual(stats, stats1)
+
+        # Worker 0, should have handed everything off
+        self.assertEqual(stats0['conform_packets'], 0)
+        self.assertEqual(stats0['exceed_packets'], 0)
+        self.assertEqual(stats0['violate_packets'], 0)
+
+        # Unbind the policer from worker 1 and repeat
+        policer.bind_vpp_config(1, False)
+        for worker in [0, 1]:
+            self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+            self.logger.debug(self.vapi.cli("show trace max 100"))
+
+        # The policer should auto-bind to worker 0 when packets arrive
+        stats = policer.get_stats()
+
+        # The 2 workers should now have policed the same amount
+        stats = policer.get_stats()
+        stats0 = policer.get_stats(worker=0)
+        stats1 = policer.get_stats(worker=1)
+
+        self.assertGreater(stats0['conform_packets'], 0)
+        self.assertEqual(stats0['exceed_packets'], 0)
+        self.assertGreater(stats0['violate_packets'], 0)
+
+        self.assertGreater(stats1['conform_packets'], 0)
+        self.assertEqual(stats1['exceed_packets'], 0)
+        self.assertGreater(stats1['violate_packets'], 0)
+
+        self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
+                         stats['conform_packets'])
+
+        self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
+                         stats['violate_packets'])
+
+        # Stop policing on pg0
+        policer.apply_vpp_config(self.pg0.sw_if_index, False)
+
+        policer.remove_vpp_config()
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_pppoe.py b/test/test_pppoe.py
new file mode 100644
index 0000000..99dba01
--- /dev/null
+++ b/test/test_pppoe.py
@@ -0,0 +1,611 @@
+#!/usr/bin/env python3
+
+import socket
+import unittest
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.ppp import PPPoE, PPPoED, PPP
+from scapy.layers.inet import IP
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_pppoe_interface import VppPppoeInterface
+from util import ppp, ppc
+
+
+class TestPPPoE(VppTestCase):
+    """ PPPoE Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestPPPoE, cls).setUpClass()
+
+        cls.session_id = 1
+        cls.dst_ip = "100.1.1.100"
+        cls.dst_ipn = socket.inet_pton(socket.AF_INET, cls.dst_ip)
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestPPPoE, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestPPPoE, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(3))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+    def tearDown(self):
+        super(TestPPPoE, self).tearDown()
+
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.admin_down()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show int"))
+        self.logger.info(self.vapi.cli("show pppoe fib"))
+        self.logger.info(self.vapi.cli("show pppoe session"))
+        self.logger.info(self.vapi.cli("show ip fib"))
+        self.logger.info(self.vapi.cli("show trace"))
+
+    def create_stream_pppoe_discovery(self, src_if, dst_if,
+                                      client_mac, count=1):
+        packets = []
+        for i in range(count):
+            # create packet info stored in the test case instance
+            info = self.create_packet_info(src_if, dst_if)
+            # convert the info into packet payload
+            payload = self.info_to_payload(info)
+            # create the packet itself
+            p = (Ether(dst=src_if.local_mac, src=client_mac) /
+                 PPPoED(sessionid=0) /
+                 Raw(payload))
+            # store a copy of the packet in the packet info
+            info.data = p.copy()
+            # append the packet to the list
+            packets.append(p)
+
+        # return the created packet list
+        return packets
+
+    def create_stream_pppoe_lcp(self, src_if, dst_if,
+                                client_mac, session_id, count=1):
+        packets = []
+        for i in range(count):
+            # create packet info stored in the test case instance
+            info = self.create_packet_info(src_if, dst_if)
+            # convert the info into packet payload
+            payload = self.info_to_payload(info)
+            # create the packet itself
+            p = (Ether(dst=src_if.local_mac, src=client_mac) /
+                 PPPoE(sessionid=session_id) /
+                 PPP(proto=0xc021) /
+                 Raw(payload))
+            # store a copy of the packet in the packet info
+            info.data = p.copy()
+            # append the packet to the list
+            packets.append(p)
+
+        # return the created packet list
+        return packets
+
+    def create_stream_pppoe_ip4(self, src_if, dst_if,
+                                client_mac, session_id, client_ip, count=1):
+        packets = []
+        for i in range(count):
+            # create packet info stored in the test case instance
+            info = self.create_packet_info(src_if, dst_if)
+            # convert the info into packet payload
+            payload = self.info_to_payload(info)
+            # create the packet itself
+            p = (Ether(dst=src_if.local_mac, src=client_mac) /
+                 PPPoE(sessionid=session_id) /
+                 PPP(proto=0x0021) /
+                 IP(src=client_ip, dst=self.dst_ip) /
+                 Raw(payload))
+            # store a copy of the packet in the packet info
+            info.data = p.copy()
+            # append the packet to the list
+            packets.append(p)
+
+        # return the created packet list
+        return packets
+
+    def create_stream_ip4(self, src_if, dst_if, client_ip, dst_ip, count=1):
+        pkts = []
+        for i in range(count):
+            # create packet info stored in the test case instance
+            info = self.create_packet_info(src_if, dst_if)
+            # convert the info into packet payload
+            payload = self.info_to_payload(info)
+            # create the packet itself
+            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                 IP(src=dst_ip, dst=client_ip) /
+                 Raw(payload))
+            # store a copy of the packet in the packet info
+            info.data = p.copy()
+            # append the packet to the list
+            pkts.append(p)
+
+        # return the created packet list
+        return pkts
+
+    def verify_decapped_pppoe(self, src_if, capture, sent):
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def verify_encaped_pppoe(self, src_if, capture, sent, session_id):
+
+        self.assertEqual(len(capture), len(sent))
+
+        for i in range(len(capture)):
+            try:
+                tx = sent[i]
+                rx = capture[i]
+
+                tx_ip = tx[IP]
+                rx_ip = rx[IP]
+
+                self.assertEqual(rx_ip.src, tx_ip.src)
+                self.assertEqual(rx_ip.dst, tx_ip.dst)
+
+                rx_pppoe = rx[PPPoE]
+
+                self.assertEqual(rx_pppoe.sessionid, session_id)
+
+            except:
+                self.logger.error(ppp("Rx:", rx))
+                self.logger.error(ppp("Tx:", tx))
+                raise
+
+    def test_PPPoE_Decap(self):
+        """ PPPoE Decap Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session
+        pppoe_if = VppPppoeInterface(self,
+                                     self.pg0.remote_ip4,
+                                     self.pg0.remote_mac,
+                                     self.session_id)
+        pppoe_if.add_vpp_config()
+        pppoe_if.set_unnumbered(self.pg0.sw_if_index)
+
+        #
+        # Send tunneled packets that match the created tunnel and
+        # are decapped and forwarded
+        #
+        tx2 = self.create_stream_pppoe_ip4(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id,
+                                           self.pg0.remote_ip4)
+        self.pg0.add_stream(tx2)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx2 = self.pg1.get_capture(len(tx2))
+        self.verify_decapped_pppoe(self.pg0, rx2, tx2)
+
+        self.logger.info(self.vapi.cli("show pppoe fib"))
+        self.logger.info(self.vapi.cli("show pppoe session"))
+        self.logger.info(self.vapi.cli("show ip fib"))
+
+        #
+        # test case cleanup
+        #
+
+        # Delete PPPoE session
+        pppoe_if.remove_vpp_config()
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+    def test_PPPoE_Encap(self):
+        """ PPPoE Encap Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session
+        pppoe_if = VppPppoeInterface(self,
+                                     self.pg0.remote_ip4,
+                                     self.pg0.remote_mac,
+                                     self.session_id)
+        pppoe_if.add_vpp_config()
+        pppoe_if.set_unnumbered(self.pg0.sw_if_index)
+
+        #
+        # Send a packet stream that is routed into the session
+        #  - packets are PPPoE encapped
+        #
+        self.vapi.cli("clear trace")
+        tx2 = self.create_stream_ip4(self.pg1, self.pg0,
+                                     self.pg0.remote_ip4, self.dst_ip, 65)
+        self.pg1.add_stream(tx2)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx2 = self.pg0.get_capture(len(tx2))
+        self.verify_encaped_pppoe(self.pg1, rx2, tx2, self.session_id)
+
+        self.logger.info(self.vapi.cli("show pppoe fib"))
+        self.logger.info(self.vapi.cli("show pppoe session"))
+        self.logger.info(self.vapi.cli("show ip fib"))
+        self.logger.info(self.vapi.cli("show adj"))
+
+        #
+        # test case cleanup
+        #
+
+        # Delete PPPoE session
+        pppoe_if.remove_vpp_config()
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+    def test_PPPoE_Add_Twice(self):
+        """ PPPoE Add Same Session Twice Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session
+        pppoe_if = VppPppoeInterface(self,
+                                     self.pg0.remote_ip4,
+                                     self.pg0.remote_mac,
+                                     self.session_id)
+        pppoe_if.add_vpp_config()
+        pppoe_if.set_unnumbered(self.pg0.sw_if_index)
+
+        #
+        # The double create (create the same session twice) should fail,
+        # and we should still be able to use the original
+        #
+        try:
+            pppoe_if.add_vpp_config()
+        except Exception:
+            pass
+        else:
+            self.fail("Double GRE tunnel add does not fail")
+
+        #
+        # test case cleanup
+        #
+
+        # Delete PPPoE session
+        pppoe_if.remove_vpp_config()
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+    def test_PPPoE_Del_Twice(self):
+        """ PPPoE Delete Same Session Twice Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session
+        pppoe_if = VppPppoeInterface(self,
+                                     self.pg0.remote_ip4,
+                                     self.pg0.remote_mac,
+                                     self.session_id)
+        pppoe_if.add_vpp_config()
+
+        # Delete PPPoE session
+        pppoe_if.remove_vpp_config()
+
+        #
+        # The double del (del the same session twice) should fail,
+        # and we should still be able to use the original
+        #
+        try:
+            pppoe_if.remove_vpp_config()
+        except Exception:
+            pass
+        else:
+            self.fail("Double GRE tunnel del does not fail")
+
+        #
+        # test case cleanup
+        #
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+    def test_PPPoE_Decap_Multiple(self):
+        """ PPPoE Decap Multiple Sessions Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery 1
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP 1
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session 1
+        pppoe_if1 = VppPppoeInterface(self,
+                                      self.pg0.remote_ip4,
+                                      self.pg0.remote_mac,
+                                      self.session_id)
+        pppoe_if1.add_vpp_config()
+        pppoe_if1.set_unnumbered(self.pg0.sw_if_index)
+
+        # Send PPPoE Discovery 2
+        tx3 = self.create_stream_pppoe_discovery(self.pg2, self.pg1,
+                                                 self.pg2.remote_mac)
+        self.pg2.add_stream(tx3)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP 2
+        tx4 = self.create_stream_pppoe_lcp(self.pg2, self.pg1,
+                                           self.pg2.remote_mac,
+                                           self.session_id + 1)
+        self.pg2.add_stream(tx4)
+        self.pg_start()
+
+        # Create PPPoE session 2
+        pppoe_if2 = VppPppoeInterface(self,
+                                      self.pg2.remote_ip4,
+                                      self.pg2.remote_mac,
+                                      self.session_id + 1)
+        pppoe_if2.add_vpp_config()
+        pppoe_if2.set_unnumbered(self.pg0.sw_if_index)
+
+        #
+        # Send tunneled packets that match the created tunnel and
+        # are decapped and forwarded
+        #
+        tx2 = self.create_stream_pppoe_ip4(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id,
+                                           self.pg0.remote_ip4)
+        self.pg0.add_stream(tx2)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx2 = self.pg1.get_capture(len(tx2))
+        self.verify_decapped_pppoe(self.pg0, rx2, tx2)
+
+        tx5 = self.create_stream_pppoe_ip4(self.pg2, self.pg1,
+                                           self.pg2.remote_mac,
+                                           self.session_id + 1,
+                                           self.pg2.remote_ip4)
+        self.pg2.add_stream(tx5)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx5 = self.pg1.get_capture(len(tx5))
+        self.verify_decapped_pppoe(self.pg2, rx5, tx5)
+
+        self.logger.info(self.vapi.cli("show pppoe fib"))
+        self.logger.info(self.vapi.cli("show pppoe session"))
+        self.logger.info(self.vapi.cli("show ip fib"))
+
+        #
+        # test case cleanup
+        #
+
+        # Delete PPPoE session
+        pppoe_if1.remove_vpp_config()
+        pppoe_if2.remove_vpp_config()
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+    def test_PPPoE_Encap_Multiple(self):
+        """ PPPoE Encap Multiple Sessions Test """
+
+        self.vapi.cli("clear trace")
+
+        #
+        # Add a route that resolves the server's destination
+        #
+        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
+                                     [VppRoutePath(self.pg1.remote_ip4,
+                                                   self.pg1.sw_if_index)])
+        route_sever_dst.add_vpp_config()
+
+        # Send PPPoE Discovery 1
+        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
+                                                 self.pg0.remote_mac)
+        self.pg0.add_stream(tx0)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP 1
+        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
+                                           self.pg0.remote_mac,
+                                           self.session_id)
+        self.pg0.add_stream(tx1)
+        self.pg_start()
+
+        # Create PPPoE session 1
+        pppoe_if1 = VppPppoeInterface(self,
+                                      self.pg0.remote_ip4,
+                                      self.pg0.remote_mac,
+                                      self.session_id)
+        pppoe_if1.add_vpp_config()
+
+        # Send PPPoE Discovery 2
+        tx3 = self.create_stream_pppoe_discovery(self.pg2, self.pg1,
+                                                 self.pg2.remote_mac)
+        self.pg2.add_stream(tx3)
+        self.pg_start()
+
+        # Send PPPoE PPP LCP 2
+        tx4 = self.create_stream_pppoe_lcp(self.pg2, self.pg1,
+                                           self.pg2.remote_mac,
+                                           self.session_id + 1)
+        self.pg2.add_stream(tx4)
+        self.pg_start()
+
+        # Create PPPoE session 2
+        pppoe_if2 = VppPppoeInterface(self,
+                                      self.pg2.remote_ip4,
+                                      self.pg2.remote_mac,
+                                      self.session_id + 1)
+        pppoe_if2.add_vpp_config()
+
+        #
+        # Send a packet stream that is routed into the session
+        #  - packets are PPPoE encapped
+        #
+        self.vapi.cli("clear trace")
+        tx2 = self.create_stream_ip4(self.pg1, self.pg0,
+                                     self.pg0.remote_ip4, self.dst_ip)
+        self.pg1.add_stream(tx2)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx2 = self.pg0.get_capture(len(tx2))
+        self.verify_encaped_pppoe(self.pg1, rx2, tx2, self.session_id)
+
+        tx5 = self.create_stream_ip4(self.pg1, self.pg2,
+                                     self.pg2.remote_ip4, self.dst_ip)
+        self.pg1.add_stream(tx5)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx5 = self.pg2.get_capture(len(tx5))
+        self.verify_encaped_pppoe(self.pg1, rx5, tx5, self.session_id + 1)
+
+        self.logger.info(self.vapi.cli("show pppoe fib"))
+        self.logger.info(self.vapi.cli("show pppoe session"))
+        self.logger.info(self.vapi.cli("show ip fib"))
+
+        #
+        # test case cleanup
+        #
+
+        # Delete PPPoE session
+        pppoe_if1.remove_vpp_config()
+        pppoe_if2.remove_vpp_config()
+
+        # Delete a route that resolves the server's destination
+        route_sever_dst.remove_vpp_config()
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_quic.py b/test/test_quic.py
new file mode 100644
index 0000000..1257f4e
--- /dev/null
+++ b/test/test_quic.py
@@ -0,0 +1,554 @@
+#!/usr/bin/env python3
+""" Vpp QUIC tests """
+
+import unittest
+import os
+import subprocess
+import signal
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner, running_extended_tests, \
+    Worker
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+
+
+class QUICAppWorker(Worker):
+    """ QUIC Test Application Worker """
+    process = None
+
+    def __init__(self, build_dir, appname, executable_args, logger, role,
+                 testcase, env=None, *args, **kwargs):
+        if env is None:
+            env = {}
+        app = "%s/vpp/bin/%s" % (build_dir, appname)
+        self.args = [app] + executable_args
+        self.role = role
+        self.wait_for_gdb = 'wait-for-gdb'
+        self.testcase = testcase
+        super(QUICAppWorker, self).__init__(self.args, logger, env,
+                                            *args, **kwargs)
+
+    def run(self):
+        super(QUICAppWorker, self).run()
+
+    def teardown(self, logger, timeout):
+        if self.process is None:
+            return False
+        try:
+            logger.debug("Killing worker process (pid %d)" % self.process.pid)
+            os.killpg(os.getpgid(self.process.pid), signal.SIGKILL)
+            self.join(timeout)
+        except OSError as e:
+            logger.debug("Couldn't kill worker process")
+            return True
+        return False
+
+
+class QUICTestCase(VppTestCase):
+    """ QUIC Test Case """
+
+    timeout = 20
+    pre_test_sleep = 0.3
+    post_test_sleep = 0.3
+
+    @classmethod
+    def setUpClass(cls):
+        cls.extra_vpp_plugin_config.append("plugin quic_plugin.so { enable }")
+        super(QUICTestCase, cls).setUpClass()
+
+    def setUp(self):
+        super(QUICTestCase, self).setUp()
+        var = "VPP_BUILD_DIR"
+        self.build_dir = os.getenv(var, None)
+        if self.build_dir is None:
+            raise Exception("Environment variable `%s' not set" % var)
+        self.vppDebug = 'vpp_debug' in self.build_dir
+
+        self.create_loopback_interfaces(2)
+        self.uri = "quic://%s/1234" % self.loop0.local_ip4
+        table_id = 1
+        for i in self.lo_interfaces:
+            i.admin_up()
+
+            if table_id != 0:
+                tbl = VppIpTable(self, table_id)
+                tbl.add_vpp_config()
+
+            i.set_table_ip4(table_id)
+            i.config_ip4()
+            table_id += 1
+
+        # Configure namespaces
+        self.vapi.app_namespace_add_del(namespace_id="server",
+                                        sw_if_index=self.loop0.sw_if_index)
+        self.vapi.app_namespace_add_del(namespace_id="client",
+                                        sw_if_index=self.loop1.sw_if_index)
+
+        # Add inter-table routes
+        self.ip_t01 = VppIpRoute(self, self.loop1.local_ip4, 32,
+                                 [VppRoutePath("0.0.0.0",
+                                               0xffffffff,
+                                               nh_table_id=2)], table_id=1)
+        self.ip_t10 = VppIpRoute(self, self.loop0.local_ip4, 32,
+                                 [VppRoutePath("0.0.0.0",
+                                               0xffffffff,
+                                               nh_table_id=1)], table_id=2)
+        self.ip_t01.add_vpp_config()
+        self.ip_t10.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip fib"))
+
+    def tearDown(self):
+        # Delete inter-table routes
+        self.ip_t01.remove_vpp_config()
+        self.ip_t10.remove_vpp_config()
+
+        for i in self.lo_interfaces:
+            i.unconfig_ip4()
+            i.set_table_ip4(0)
+            i.admin_down()
+        super(QUICTestCase, self).tearDown()
+
+
+class QUICEchoIntTestCase(QUICTestCase):
+    """QUIC Echo Internal Test Case"""
+    test_bytes = ' test-bytes'
+    extra_vpp_punt_config = ["session", "{", "enable", "poll-main", "}"]
+
+    def setUp(self):
+        super(QUICEchoIntTestCase, self).setUp()
+        self.client_args = 'uri {uri} fifo-size 64{testbytes} appns client' \
+            .format(uri=self.uri, testbytes=self.test_bytes)
+        self.server_args = "uri %s fifo-size 64 appns server" % self.uri
+
+    def tearDown(self):
+        super(QUICEchoIntTestCase, self).tearDown()
+
+    def server(self, *args):
+        error = self.vapi.cli(
+            "test echo server %s %s" %
+            (self.server_args, ' '.join(args)))
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn("failed", error)
+
+    def client(self, *args):
+        error = self.vapi.cli(
+            "test echo client %s %s" %
+            (self.client_args, ' '.join(args)))
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn("failed", error)
+
+
+@tag_fixme_vpp_workers
+class QUICEchoIntTransferTestCase(QUICEchoIntTestCase):
+    """QUIC Echo Internal Transfer Test Case"""
+    def test_quic_int_transfer(self):
+        """QUIC internal transfer"""
+        self.server()
+        self.client("no-output", "mbytes", "2")
+
+
+@tag_fixme_vpp_workers
+class QUICEchoIntSerialTestCase(QUICEchoIntTestCase):
+    """QUIC Echo Internal Serial Transfer Test Case"""
+    def test_quic_serial_int_transfer(self):
+        """QUIC serial internal transfer"""
+        self.server()
+        self.client("no-output", "mbytes", "2")
+        self.client("no-output", "mbytes", "2")
+        self.client("no-output", "mbytes", "2")
+        self.client("no-output", "mbytes", "2")
+        self.client("no-output", "mbytes", "2")
+
+
+@tag_fixme_vpp_workers
+class QUICEchoIntMStreamTestCase(QUICEchoIntTestCase):
+    """QUIC Echo Internal MultiStream Test Case"""
+    def test_quic_int_multistream_transfer(self):
+        """QUIC internal multi-stream transfer"""
+        self.server()
+        self.client("nclients", "10", "mbytes", "1", "no-output")
+
+
+class QUICEchoExtTestCase(QUICTestCase):
+    quic_setup = "default"
+    test_bytes = "test-bytes:assert"
+    pre_test_sleep = 1
+    post_test_sleep = 1
+    app = "vpp_echo"
+    evt_q_len = 16384
+    vpp_worker_count = 1
+    server_fifo_size = "1M"
+    client_fifo_size = "4M"
+    extra_vpp_punt_config = ["session", "{",
+                             "enable", "poll-main", "evt_qs_memfd_seg",
+                             "evt_qs_seg_size", "64M",
+                             "event-queue-length", f"{evt_q_len}",
+                             "preallocated-sessions", "1024",
+                             "v4-session-table-buckets", "20000",
+                             "v4-session-table-memory", "64M",
+                             "v4-halfopen-table-buckets", "20000",
+                             "v4-halfopen-table-memory", "64M",
+                             "local-endpoints-table-buckets", "250000",
+                             "local-endpoints-table-memory", "512M",
+                             "}"]
+
+    def setUp(self):
+        super(QUICEchoExtTestCase, self).setUp()
+        common_args = [
+            "uri", self.uri,
+            "json",
+            self.test_bytes,
+            "socket-name", self.get_api_sock_path(),
+            "quic-setup", self.quic_setup,
+            "nthreads", "1",
+            "mq-size", f"{self.evt_q_len}"
+        ]
+        self.server_echo_test_args = common_args + \
+            ["server", "appns", "server", "fifo-size",
+             f"{self.server_fifo_size}"]
+        self.client_echo_test_args = common_args + \
+            ["client", "appns", "client", "fifo-size",
+             f"{self.client_fifo_size}"]
+        error = self.vapi.cli("quic set fifo-size 2M")
+        if error:
+            self.logger.critical(error)
+            self.assertNotIn("failed", error)
+
+    def server(self, *args):
+        _args = self.server_echo_test_args + list(args)
+        self.worker_server = QUICAppWorker(
+            self.build_dir,
+            self.app,
+            _args,
+            self.logger,
+            'server',
+            self)
+        self.worker_server.start()
+        self.sleep(self.pre_test_sleep)
+
+    def client(self, *args):
+        _args = self.client_echo_test_args + list(args)
+        self.worker_client = QUICAppWorker(
+            self.build_dir,
+            self.app,
+            _args,
+            self.logger,
+            'client',
+            self)
+        self.worker_client.start()
+        timeout = None if self.debug_all else self.timeout
+        self.worker_client.join(timeout)
+        if self.worker_client.is_alive():
+            error = f"Client failed to complete in {timeout} seconds!"
+            self.logger.critical(error)
+            return
+        self.worker_server.join(timeout)
+        if self.worker_server.is_alive():
+            error = f"Server failed to complete in {timeout} seconds!"
+            self.logger.critical(error)
+        self.sleep(self.post_test_sleep)
+
+    def validate_ext_test_results(self):
+        server_result = self.worker_server.result
+        client_result = self.worker_client.result
+        self.logger.info("Server worker result is `%s'" %
+                         server_result)
+        self.logger.info("Client worker result is `%s'" %
+                         client_result)
+        server_kill_error = False
+        if self.worker_server.result is None:
+            server_kill_error = self.worker_server.teardown(
+                self.logger, self.timeout)
+        if self.worker_client.result is None:
+            self.worker_client.teardown(self.logger, self.timeout)
+        err_msg = "Wrong server worker return code (%s)" % server_result
+        self.assertEqual(server_result, 0, err_msg)
+        self.assertIsNotNone(
+            client_result,
+            "Timeout! Client worker did not finish in %ss" %
+            self.timeout)
+        err_msg = "Wrong client worker return code (%s)" % client_result
+        self.assertEqual(client_result, 0, err_msg)
+        self.assertFalse(server_kill_error, "Server kill errored")
+
+
+class QUICEchoExtTransferTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Test Case"""
+    timeout = 60
+
+    def test_quic_ext_transfer(self):
+        """QUIC external transfer"""
+        self.server()
+        self.client()
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtTransferBigTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Big Test Case"""
+    server_fifo_size = '4M'
+    client_fifo_size = '4M'
+    test_bytes = ''
+    timeout = 60
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_quic_ext_transfer_big(self):
+        """QUIC external transfer, big stream"""
+        self.server("TX=0", "RX=2G")
+        self.client("TX=2G", "RX=0")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtQcloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Qclose Rx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_qclose_rx(self):
+        """QUIC external transfer, rx close"""
+        self.server("TX=0", "RX=10M", "qclose=Y", "sclose=N")
+        self.client("TX=10M", "RX=0", "qclose=W", "sclose=W")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtQcloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Qclose Tx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_qclose_tx(self):
+        """QUIC external transfer, tx close"""
+        self.server("TX=0", "RX=10M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.client("TX=10M", "RX=0", "qclose=Y", "sclose=N")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtEarlyQcloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Early Qclose Rx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_early_qclose_rx(self):
+        """QUIC external transfer, early rx close"""
+        self.server("TX=0", "RX=10M", "qclose=Y", "sclose=N")
+        self.client("TX=20M", "RX=0", "qclose=W", "sclose=W",
+                    "tx-results-diff")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtEarlyQcloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Early Qclose Tx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_early_qclose_tx(self):
+        """QUIC external transfer, early tx close"""
+        self.server("TX=0", "RX=20M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.client("TX=10M", "RX=0", "qclose=Y", "sclose=N")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtScloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Sclose Rx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_sclose_rx(self):
+        """QUIC external transfer, rx stream close"""
+        self.server("TX=0", "RX=10M", "qclose=N", "sclose=Y")
+        self.client("TX=10M", "RX=0", "qclose=W", "sclose=W")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtScloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Sclose Tx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_sclose_tx(self):
+        """QUIC external transfer, tx stream close"""
+        self.server("TX=0", "RX=10M", "qclose=W", "sclose=W")
+        self.client("TX=10M", "RX=0", "qclose=Y", "sclose=Y")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtEarlyScloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Early Sclose Rx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_early_sclose_rx(self):
+        """QUIC external transfer, early rx stream close"""
+        self.server("TX=0", "RX=10M", "qclose=N", "sclose=Y")
+        self.client("TX=20M", "RX=0", "qclose=W", "sclose=W",
+                    "tx-results-diff")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtEarlyScloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Early Sclose Tx Test Case"""
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_early_sclose_tx(self):
+        """QUIC external transfer, early tx stream close"""
+        self.server("TX=0", "RX=20M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.client("TX=10M", "RX=0", "qclose=Y", "sclose=Y")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Test Case"""
+    quic_setup = "serverstream"
+    timeout = 60
+
+    def test_quic_ext_transfer_server_stream(self):
+        """QUIC external server transfer"""
+        self.server("TX=10M", "RX=0")
+        self.client("TX=0", "RX=10M")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamBigTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Big Test Case"""
+    quic_setup = "serverstream"
+    server_fifo_size = '4M'
+    client_fifo_size = '4M'
+    test_bytes = ''
+    timeout = 60
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    def test_quic_ext_transfer_server_stream_big(self):
+        """QUIC external server transfer, big stream"""
+        self.server("TX=2G", "RX=0")
+        self.client("TX=0", "RX=2G")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamQcloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Qclose Rx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_qclose_rx(self):
+        """QUIC external server transfer, rx close"""
+        self.server("TX=10M", "RX=0", "qclose=W", "sclose=W")
+        self.client("TX=0", "RX=10M", "qclose=Y", "sclose=N")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamQcloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Qclose Tx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_qclose_tx(self):
+        """QUIC external server transfer, tx close"""
+        self.server("TX=10M", "RX=0", "qclose=Y", "sclose=N")
+        self.client("TX=0", "RX=10M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamEarlyQcloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Early Qclose Rx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_early_qclose_rx(self):
+        """QUIC external server transfer, early rx close"""
+        self.server("TX=20M", "RX=0", "qclose=W", "sclose=W",
+                    "tx-results-diff")
+        self.client("TX=0", "RX=10M", "qclose=Y", "sclose=N")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamEarlyQcloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Early Qclose Tx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_early_qclose_tx(self):
+        """QUIC external server transfer, early tx close"""
+        self.server("TX=10M", "RX=0", "qclose=Y", "sclose=N")
+        self.client("TX=0", "RX=20M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamScloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Sclose Rx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_sclose_rx(self):
+        """QUIC external server transfer, rx stream close"""
+        self.server("TX=10M", "RX=0", "qclose=W", "sclose=W")
+        self.client("TX=0", "RX=10M", "qclose=N", "sclose=Y")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamScloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Sclose Tx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_sclose_tx(self):
+        """QUIC external server transfer, tx stream close"""
+        self.server("TX=10M", "RX=0", "qclose=Y", "sclose=Y")
+        self.client("TX=0", "RX=10M", "qclose=W", "sclose=W")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamEarlyScloseRxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream Early Sclose Rx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_early_sclose_rx(self):
+        """QUIC external server transfer, early rx stream close"""
+        self.server("TX=20M", "RX=0", "qclose=W", "sclose=W",
+                    "tx-results-diff")
+        self.client("TX=0", "RX=10M", "qclose=N", "sclose=Y")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamEarlyScloseTxTestCase(QUICEchoExtTestCase):
+    """QUIC Echo Ext Transfer Server Stream Early Sclose Tx Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_server_stream_early_sclose_tx(self):
+        """QUIC external server transfer, early tx stream close"""
+        self.server("TX=10M", "RX=0", "qclose=Y", "sclose=Y")
+        self.client("TX=0", "RX=20M", "qclose=W", "sclose=W",
+                    "rx-results-diff")
+        self.validate_ext_test_results()
+
+
+class QUICEchoExtServerStreamWorkersTestCase(QUICEchoExtTestCase):
+    """QUIC Echo External Transfer Server Stream MultiWorker Test Case"""
+    quic_setup = "serverstream"
+
+    @unittest.skipUnless(running_extended_tests, "part of extended tests")
+    @unittest.skip("testcase under development")
+    def test_quic_ext_transfer_server_stream_multi_workers(self):
+        """QUIC external server transfer, multi-worker"""
+        self.server("nclients", "4", "quic-streams", "4", "TX=10M", "RX=0")
+        self.client("nclients", "4", "quic-streams", "4", "TX=0", "RX=10M")
+        self.validate_ext_test_results()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_srv6.py b/test/test_srv6.py
new file mode 100644
index 0000000..449ad59
--- /dev/null
+++ b/test/test_srv6.py
@@ -0,0 +1,2147 @@
+#!/usr/bin/env python3
+
+import unittest
+import binascii
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSRv6, cls).tearDownClass()
+
+    def setUp(self):
+        """ Perform test setup before each test case.
+        """
+        super(TestSRv6, self).setUp()
+
+        # packet sizes, inclusive L2 overhead
+        self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+        # reset packet_infos
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """ Clean up test setup after each test case.
+        """
+        self.teardown_interfaces()
+
+        super(TestSRv6, self).tearDown()
+
+    def configure_interface(self,
+                            interface,
+                            ipv6=False, ipv4=False,
+                            ipv6_table_id=0, ipv4_table_id=0):
+        """ Configure interface.
+        :param ipv6: configure IPv6 on interface
+        :param ipv4: configure IPv4 on interface
+        :param ipv6_table_id: FIB table_id for IPv6
+        :param ipv4_table_id: FIB table_id for IPv4
+        """
+        self.logger.debug("Configuring interface %s" % (interface.name))
+        if ipv6:
+            self.logger.debug("Configuring IPv6")
+            interface.set_table_ip6(ipv6_table_id)
+            interface.config_ip6()
+            interface.resolve_ndp(timeout=5)
+        if ipv4:
+            self.logger.debug("Configuring IPv4")
+            interface.set_table_ip4(ipv4_table_id)
+            interface.config_ip4()
+            interface.resolve_arp()
+        interface.admin_up()
+
+    def setup_interfaces(self, ipv6=[], ipv4=[],
+                         ipv6_table_id=[], ipv4_table_id=[]):
+        """ Create and configure interfaces.
+
+        :param ipv6: list of interface IPv6 capabilities
+        :param ipv4: list of interface IPv4 capabilities
+        :param ipv6_table_id: list of intf IPv6 FIB table_ids
+        :param ipv4_table_id: list of intf IPv4 FIB table_ids
+        :returns: List of created interfaces.
+        """
+        # how many interfaces?
+        if len(ipv6):
+            count = len(ipv6)
+        else:
+            count = len(ipv4)
+        self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+        # fill up ipv6 and ipv4 lists if needed
+        # not enabled (False) is the default
+        if len(ipv6) < count:
+            ipv6 += (count - len(ipv6)) * [False]
+        if len(ipv4) < count:
+            ipv4 += (count - len(ipv4)) * [False]
+
+        # fill up table_id lists if needed
+        # table_id 0 (global) is the default
+        if len(ipv6_table_id) < count:
+            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+        if len(ipv4_table_id) < count:
+            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+        # create 'count' pg interfaces
+        self.create_pg_interfaces(range(count))
+
+        # setup all interfaces
+        for i in range(count):
+            intf = self.pg_interfaces[i]
+            self.configure_interface(intf,
+                                     ipv6[i], ipv4[i],
+                                     ipv6_table_id[i], ipv4_table_id[i])
+
+        if any(ipv6):
+            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+        if any(ipv4):
+            self.logger.debug(self.vapi.cli("show ip4 neighbors"))
+        self.logger.debug(self.vapi.cli("show interface"))
+        self.logger.debug(self.vapi.cli("show hardware"))
+
+        return self.pg_interfaces
+
+    def teardown_interfaces(self):
+        """ Unconfigure and bring down interface.
+        """
+        self.logger.debug("Tearing down interfaces")
+        # tear down all interfaces
+        # AFAIK they cannot be deleted
+        for i in self.pg_interfaces:
+            self.logger.debug("Tear down interface %s" % (i.name))
+            i.admin_down()
+            i.unconfig()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Encaps(self):
+        """ Test SRv6 Transit.Encaps behavior for IPv6.
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv6 traffic to a7::/64 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="a7::", mask_width=64,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH and IPv6
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+            dst_inner,
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Insert(self):
+        """ Test SRv6 Transit.Insert behavior (IPv6 only).
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=0,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv6 traffic to a7::/64 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="a7::", mask_width=64,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Insert)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Encaps_IPv4(self):
+        """ Test SRv6 Transit.Encaps behavior for IPv4.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv4 only
+        # destination interface is IPv6 only
+        self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="7.1.1.0", mask_width=24,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = '7.1.1.123'
+        pkts = []
+
+        # create IPv4 packets
+        packet_header = self.create_packet_header_IPv4(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps_IPv4)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skip("VPP crashes after running this test")
+    def test_SRv6_T_Encaps_L2(self):
+        """ Test SRv6 Transit.Encaps behavior for L2.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv4 only TODO?
+        # destination interface is IPv6 only
+        self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer L2 traffic into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="::", mask_width=0,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=self.pg0.sw_if_index)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        pkts = []
+
+        # create L2 packets without dot1q header
+        packet_header = self.create_packet_header_L2()
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create L2 packets with dot1q header
+        packet_header = self.create_packet_header_L2(vlan=123)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps_L2)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End(self):
+        """ Test SRv6 End (without PSP) behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End without PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::0',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr=0,
+                        end_psp=0,
+                        sw_if_index=0,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with USP needs 2nd SRH
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                dst_inner,
+                sidlist=['a5::', 'a4::', 'a3::'],
+                segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                dst_inner,
+                sidlist=['a4::', 'a3::', 'a2::'],
+                segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # TODO: test behavior with SL=0 packet (needs 2*SRH?)
+
+        expected_count = len(pkts)
+
+        # packets without SRH (should not crash)
+        packet_header = self.create_packet_header_IPv6('a3::')
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End,
+                                  expected_count=expected_count)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_with_PSP(self):
+        """ Test SRv6 End with PSP behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::0',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr=0,
+                        end_psp=1,
+                        sw_if_index=0,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_PSP)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_X(self):
+        """ Test SRv6 End.X (without PSP) behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True, True])
+
+        # configure FIB entries
+        # a4::/64 via pg1 and pg2
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index)])
+        route.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+        # configure SRv6 localSID End.X without PSP behavior
+        # End.X points to interface pg1
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+                        nh_addr=self.pg1.remote_ip6,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::c4'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::c4', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End (no PSP)
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_X_with_PSP(self):
+        """ Test SRv6 End.X with PSP behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True, True])
+
+        # configure FIB entries
+        # a4::/64 via pg1 and pg2
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(
+                               self.pg1.remote_ip6,
+                               self.pg1.sw_if_index),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+                        nh_addr=self.pg1.remote_ip6,
+                        end_psp=1,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::c4'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::c4', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End with PSP
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_PSP)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX6(self):
+        """ Test SRv6 End.DX6 behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure SRv6 localSID End.DX6 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
+                        nh_addr=self.pg1.remote_ip6,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX6
+        packet_header = self.create_packet_header_IPv6_IPv6(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX6)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DT6(self):
+        """ Test SRv6 End.DT6 behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # all interfaces are IPv6 only
+        # source interface in global FIB (0)
+        # destination interfaces in global and vrf
+        vrf_1 = 1
+        ipt = VppIpTable(self, vrf_1, is_ip6=True)
+        ipt.add_vpp_config()
+        self.setup_interfaces(ipv6=[True, True, True],
+                              ipv6_table_id=[0, 0, vrf_1])
+
+        # configure FIB entries
+        # a4::/64 is reachable
+        #     via pg1 in table 0 (global)
+        #     and via pg2 in table vrf_1
+        route0 = VppIpRoute(self, "a4::", 64,
+                            [VppRoutePath(self.pg1.remote_ip6,
+                                          self.pg1.sw_if_index,
+                                          nh_table_id=0)],
+                            table_id=0)
+        route0.add_vpp_config()
+        route1 = VppIpRoute(self, "a4::", 64,
+                            [VppRoutePath(self.pg2.remote_ip6,
+                                          self.pg2.sw_if_index,
+                                          nh_table_id=vrf_1)],
+                            table_id=vrf_1)
+        route1.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+        # configure SRv6 localSID End.DT6 behavior
+        # Note:
+        # fib_table: where the localsid is installed
+        # sw_if_index: in T-variants of localsid this is the vrf table_id
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
+                        nh_addr=0,
+                        end_psp=0,
+                        sw_if_index=vrf_1,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DT6
+        packet_header = self.create_packet_header_IPv6_IPv6(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End.DX6
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+                                  self.compare_rx_tx_packet_End_DX6)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX4(self):
+        """ Test SRv6 End.DX4 behavior.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv6 only
+        # destination interface is IPv4 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
+
+        # configure SRv6 localSID End.DX4 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
+                        nh_addr=self.pg1.remote_ip4,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = '4.1.1.123'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv4 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX4
+        packet_header = self.create_packet_header_IPv6_IPv4(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX4)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DT4(self):
+        """ Test SRv6 End.DT4 behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source interface is IPv6-only
+        # destination interfaces are IPv4 only
+        # source interface in global FIB (0)
+        # destination interfaces in global and vrf
+        vrf_1 = 1
+        ipt = VppIpTable(self, vrf_1)
+        ipt.add_vpp_config()
+        self.setup_interfaces(ipv6=[True, False, False],
+                              ipv4=[False, True, True],
+                              ipv6_table_id=[0, 0, 0],
+                              ipv4_table_id=[0, 0, vrf_1])
+
+        # configure FIB entries
+        # 4.1.1.0/24 is reachable
+        #     via pg1 in table 0 (global)
+        #     and via pg2 in table vrf_1
+        route0 = VppIpRoute(self, "4.1.1.0", 24,
+                            [VppRoutePath(self.pg1.remote_ip4,
+                                          self.pg1.sw_if_index,
+                                          nh_table_id=0)],
+                            table_id=0)
+        route0.add_vpp_config()
+        route1 = VppIpRoute(self, "4.1.1.0", 24,
+                            [VppRoutePath(self.pg2.remote_ip4,
+                                          self.pg2.sw_if_index,
+                                          nh_table_id=vrf_1)],
+                            table_id=vrf_1)
+        route1.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip fib"))
+
+        # configure SRv6 localSID End.DT6 behavior
+        # Note:
+        # fib_table: where the localsid is installed
+        # sw_if_index: in T-variants of localsid: vrf table_id
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
+                        nh_addr=0,
+                        end_psp=0,
+                        sw_if_index=vrf_1,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = '4.1.1.123'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX4
+        packet_header = self.create_packet_header_IPv6_IPv4(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End.DX4
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+                                  self.compare_rx_tx_packet_End_DX4)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX2(self):
+        """ Test SRv6 End.DX2 behavior.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv6 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
+
+        # configure SRv6 localSID End.DX2 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid='A3::C4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
+                        nh_addr=0,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        # L2 has no dot1q header
+        packet_header = self.create_packet_header_IPv6_SRH_L2(
+                            sidlist=['a3::c4', 'a2::', 'a1::'],
+                            segleft=0,
+                            vlan=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        # L2 has dot1q header
+        packet_header = self.create_packet_header_IPv6_SRH_L2(
+                            sidlist=['a3::c4', 'a2::', 'a1::'],
+                            segleft=0,
+                            vlan=123)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, L2 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX2
+        # L2 has no dot1q header
+        packet_header = self.create_packet_header_IPv6_L2(
+                                            dst_outer='a3::c4',
+                                            vlan=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, L2 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX2
+        # L2 has dot1q header
+        packet_header = self.create_packet_header_IPv6_L2(
+                                            dst_outer='a3::c4',
+                                            vlan=123)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX2)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Insert_Classifier(self):
+        """ Test SRv6 Transit.Insert behavior (IPv6 only).
+            steer packets using the classifier
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[False, False, False, True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(
+                               self.pg4.remote_ip6,
+                               self.pg4.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=0,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # add classify table
+        # mask on dst ip address prefix a7::/8
+        mask = '{!s:0<16}'.format('ff')
+        r = self.vapi.classify_add_del_table(
+            1,
+            binascii.unhexlify(mask),
+            match_n_vectors=(len(mask) - 1) // 32 + 1,
+            current_data_flag=1,
+            skip_n_vectors=2)  # data offset
+        self.assertIsNotNone(r, 'No response msg for add_del_table')
+        table_index = r.new_table_index
+
+        # add the source routing node as a ip6 inacl netxt node
+        r = self.vapi.add_node_next('ip6-inacl',
+                                    'sr-pl-rewrite-insert')
+        inacl_next_node_index = r.node_index
+
+        match = '{!s:0<16}'.format('a7')
+        r = self.vapi.classify_add_del_session(
+            1,
+            table_index,
+            binascii.unhexlify(match),
+            hit_next_index=inacl_next_node_index,
+            action=3,
+            metadata=0)  # sr policy index
+        self.assertIsNotNone(r, 'No response msg for add_del_session')
+
+        # log the classify table used in the steering policy
+        self.logger.info(self.vapi.cli("show classify table"))
+
+        r = self.vapi.input_acl_set_interface(
+            is_add=1,
+            sw_if_index=self.pg3.sw_if_index,
+            ip6_table_index=table_index)
+        self.assertIsNotNone(r,
+                             'No response msg for input_acl_set_interface')
+
+        # log the ip6 inacl
+        self.logger.info(self.vapi.cli("show inacl type ip6"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg3->pg4
+        pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg3->pg4
+        pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg3, pkts, self.pg4,
+                                  self.compare_rx_tx_packet_T_Insert)
+
+        # remove the interface l2 input feature
+        r = self.vapi.input_acl_set_interface(
+            is_add=0,
+            sw_if_index=self.pg3.sw_if_index,
+            ip6_table_index=table_index)
+        self.assertIsNotNone(r,
+                             'No response msg for input_acl_set_interface')
+
+        # log the ip6 inacl after cleaning
+        self.logger.info(self.vapi.cli("show inacl type ip6"))
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove classifier SR steering
+        # classifier_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove classify session and table
+        r = self.vapi.classify_add_del_session(
+            0,
+            table_index,
+            binascii.unhexlify(match))
+        self.assertIsNotNone(r, 'No response msg for add_del_session')
+
+        r = self.vapi.classify_add_del_table(
+            0,
+            binascii.unhexlify(mask),
+            table_index=table_index)
+        self.assertIsNotNone(r, 'No response msg for add_del_table')
+
+        self.logger.info(self.vapi.cli("show classify table"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # IPv6:
+        # in: IPv6(A, B2)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
+        # IPv6 + SRH:
+        # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to expected sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to expected seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size expected seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the hop-limit field
+        #   -> update tx'ed hlim to the expected hlim
+        tx_ip.hlim = tx_ip.hlim - 1
+
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps for IPv4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps for IPv4 updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # IPv4:
+        # in: IPv4(A, B2)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IP)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # checks common to cases tx with and without SRH
+        # rx'ed packet should have SRH and IPv4 header
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        self.assertTrue(rx_ip.payload.haslayer(IP))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip.ttl = tx_ip.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip = IP(scapy.compat.raw(tx_ip))
+
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps for L2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps for L2 updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # L2:
+        # in: L2
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ether = tx_pkt.getlayer(Ether)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+        # nh should be "No Next Header" (143)
+        self.assertEqual(rx_srh.nh, 143)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Insert
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Insert updates the headers as follows:
+        # IPv6:
+        # in: IPv6(A, B2)
+        # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
+        # IPv6 + SRH:
+        # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+        # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_srh2 = None
+        rx_ip3 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_srh = None
+        tx_ip2 = None
+        # some packets have been tx'ed with an SRH, some without it
+        # get SRH if tx'ed packet has it
+        if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
+            tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+            tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_udp = tx_pkt[UDP]
+
+        # expected segment-list (make copy of SR Policy segment list)
+        seglist = self.sr_policy.segments[:]
+        # expected seglist has initial dest addr as last segment
+        seglist.append(tx_ip.dst)
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # checks common to cases tx with and without SRH
+        # rx'ed packet should have SRH and only one IPv6 header
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        self.assertFalse(rx_ip.payload.haslayer(IPv6))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # rx'ed ip.src should be equal to tx'ed ip.src
+        self.assertEqual(rx_ip.src, tx_ip.src)
+        # rx'ed ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+        # rx'ed seglist should be equal to expected seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size(expected seglist)-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        if tx_srh:  # packet was tx'ed with SRH
+            # packet should have 2nd SRH
+            self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+            # get 2nd SRH
+            rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
+
+            # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
+            self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
+            # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
+            self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
+            # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
+            self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
+
+        else:  # packet was tx'ed without SRH
+            # rx packet should have no other SRH
+            self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End (without PSP)
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End (no PSP) updates the headers as follows:
+        # IPv6 + SRH:
+        # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+        # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we know the packet has been tx'ed
+        # with an inner IPv6 header and an SRH
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        tx_udp = tx_pkt[UDP]
+
+        # common checks, regardless of tx segleft value
+        # rx'ed packet should have 2nd IPv6 header
+        self.assertTrue(rx_ip.payload.haslayer(IPv6))
+        # get second (inner) IPv6 header
+        rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+
+        if tx_ip.segleft > 0:
+            # SRH should NOT have been popped:
+            #   End SID without PSP does not pop SRH if segleft>0
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+            # received ip.src should be equal to expected ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # sidlist should be unchanged
+            self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+            # segleft should have been decremented
+            self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+            # received ip.dst should be equal to sidlist[segleft]
+            self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+            # lastentry should be unchanged
+            self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+            # inner IPv6 packet (ip2) should be unchanged
+            self.assertEqual(rx_ip2.src, tx_ip2.src)
+            self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+        # else:  # tx_ip.segleft == 0
+            # TODO: Does this work with 2 SRHs in ingress packet?
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End with PSP
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End (PSP) updates the headers as follows:
+        # IPv6 + SRH (SL>1):
+        # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+        # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+        # IPv6 + SRH (SL=1):
+        # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+        # out: IPv6(A, S3)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we know the packet has been tx'ed
+        # with an inner IPv6 header and an SRH
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        tx_udp = tx_pkt[UDP]
+
+        # common checks, regardless of tx segleft value
+        self.assertTrue(rx_ip.payload.haslayer(IPv6))
+        rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+        # inner IPv6 packet (ip2) should be unchanged
+        self.assertEqual(rx_ip2.src, tx_ip2.src)
+        self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+
+        if tx_ip.segleft > 1:
+            # SRH should NOT have been popped:
+            #   End SID with PSP does not pop SRH if segleft>1
+            # rx'ed packet should have SRH
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+            # received ip.src should be equal to expected ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # sidlist should be unchanged
+            self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+            # segleft should have been decremented
+            self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+            # received ip.dst should be equal to sidlist[segleft]
+            self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+            # lastentry should be unchanged
+            self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+
+        else:  # tx_ip.segleft <= 1
+            # SRH should have been popped:
+            #   End SID with PSP and segleft=1 pops SRH
+            # the two IPv6 headers are still present
+            # outer IPv6 header has DA == last segment of popped SRH
+            # SRH should not be present
+            self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # outer IPv6 header ip.src should be equal to tx'ed ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
+            self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX6
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX6 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
+        # out: IPv6(B, D)
+        # IPv6:
+        # in: IPv6(A, S3)IPv6(B, D)
+        # out: IPv6(B, D)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the hlim field
+        #   -> adjust tx'ed hlim to expected hlim
+        tx_ip2.hlim = tx_ip2.hlim - 1
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX4 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
+        # out: IPv4(B, D)
+        # IPv6:
+        # in: IPv6(A, S3)IPv4(B, D)
+        # out: IPv4(B, D)
+
+        # get IPv4 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IP)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IP)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip2.ttl = tx_ip2.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip2.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX2 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
+        # out: L2
+        # IPv6:
+        # in: IPv6(A, S3)L2
+        # out: L2
+
+        # get IPv4 header of rx'ed packet
+        rx_eth = rx_pkt.getlayer(Ether)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we can't just get the 2nd Ether layer
+        # get the Raw content and dissect it as Ether
+        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_eth pkt should be equal to tx_eth1
+        self.assertEqual(rx_eth, tx_eth1)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+                      count):
+        """Create SRv6 input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for
+        :param VppInterface dst_if: destination interface of packet stream
+        :param packet_header: Layer3 scapy packet headers,
+                L2 is added when not provided,
+                Raw(payload) with packet_info is added
+        :param list packet_sizes: packet stream pckt sizes,sequentially applied
+               to packets in stream have
+        :param int count: number of packets in packet stream
+        :return: list of packets
+        """
+        self.logger.info("Creating packets")
+        pkts = []
+        for i in range(0, count-1):
+            payload_info = self.create_packet_info(src_if, dst_if)
+            self.logger.debug(
+                "Creating packet with index %d" % (payload_info.index))
+            payload = self.info_to_payload(payload_info)
+            # add L2 header if not yet provided in packet_header
+            if packet_header.getlayer(0).name == 'Ethernet':
+                p = (packet_header /
+                     Raw(payload))
+            else:
+                p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                     packet_header /
+                     Raw(payload))
+            size = packet_sizes[i % len(packet_sizes)]
+            self.logger.debug("Packet size %d" % (size))
+            self.extend_packet(p, size)
+            # we need to store the packet with the automatic fields computed
+            # read back the dumped packet (with str())
+            # to force computing these fields
+            # probably other ways are possible
+            p = Ether(scapy.compat.raw(p))
+            payload_info.data = p.copy()
+            self.logger.debug(ppp("Created packet:", p))
+            pkts.append(p)
+        self.logger.info("Done creating packets")
+        return pkts
+
+    def send_and_verify_pkts(self, input, pkts, output, compare_func,
+                             expected_count=None):
+        """Send packets and verify received packets using compare_func
+
+        :param input: ingress interface of DUT
+        :param pkts: list of packets to transmit
+        :param output: egress interface of DUT
+        :param compare_func: function to compare in and out packets
+        :param expected_count: expected number of captured packets (if
+               different than len(pkts))
+        """
+        # add traffic stream to input interface
+        input.add_stream(pkts)
+
+        # enable capture on all interfaces
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # start traffic
+        self.logger.info("Starting traffic")
+        self.pg_start()
+
+        # get output capture
+        self.logger.info("Getting packet capture")
+        capture = output.get_capture(expected_count=expected_count)
+
+        # assert nothing was captured on input interface
+        input.assert_nothing_captured()
+
+        # verify captured packets
+        self.verify_captured_pkts(output, capture, compare_func)
+
+    def create_packet_header_IPv6(self, dst):
+        """Create packet header: IPv6 header, UDP header
+
+        :param dst: IPv6 destination address
+
+        IPv6 source address is 1234::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH(self, sidlist, segleft):
+        """Create packet header: IPv6 header with SRH, UDP header
+
+        :param list sidlist: segment list
+        :param int segleft: segments-left field value
+
+        IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
+        """Create packet header: IPv6 encapsulated in SRv6:
+        IPv6 header with SRH, IPv6 header, UDP header
+
+        :param ipv6address dst: inner IPv6 destination address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=41) /
+             IPv6(src='4321::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
+        """Create packet header: IPv6 encapsulated in IPv6:
+        IPv6 header, IPv6 header, UDP header
+
+        :param ipv6address dst_inner: inner IPv6 destination address
+        :param ipv6address dst_outer: outer IPv6 destination address
+
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst_outer) /
+             IPv6(src='4321::1', dst=dst_inner) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
+                                               sidlist2, segleft2):
+        """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
+        IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
+
+        :param ipv6address dst: inner IPv6 destination address
+        :param list sidlist1: segment list of outer IPv6 SRH
+        :param int segleft1: segments-left field of outer IPv6 SRH
+        :param list sidlist2: segment list of inner IPv6 SRH
+        :param int segleft2: segments-left field of inner IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist1,
+                                      segleft=segleft1, nh=43) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist2,
+                                      segleft=segleft2, nh=41) /
+             IPv6(src='4321::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv4(self, dst):
+        """Create packet header: IPv4 header, UDP header
+
+        :param dst: IPv4 destination address
+
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IP(src='123.1.1.1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
+        """Create packet header: IPv4 encapsulated in IPv6:
+        IPv6 header, IPv4 header, UDP header
+
+        :param ipv4address dst_inner: inner IPv4 destination address
+        :param ipv6address dst_outer: outer IPv6 destination address
+
+        IPv6 source address is 1234::1
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst_outer) /
+             IP(src='123.1.1.1', dst=dst_inner) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
+        """Create packet header: IPv4 encapsulated in SRv6:
+        IPv6 header with SRH, IPv4 header, UDP header
+
+        :param ipv4address dst: inner IPv4 destination address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=4) /
+             IP(src='123.1.1.1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_L2(self, vlan=0):
+        """Create packet header: L2 header
+
+        :param vlan: if vlan!=0 then add 802.1q header
+        """
+        # Note: the dst addr ('00:55:44:33:22:11') is used in
+        # the compare function compare_rx_tx_packet_T_Encaps_L2
+        # to detect presence of L2 in SRH payload
+        p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            p /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            p.type = etype
+        return p
+
+    def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
+        """Create packet header: L2 encapsulated in SRv6:
+        IPv6 header with SRH, L2
+
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=143) /
+             eth)
+        return p
+
+    def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
+        """Create packet header: L2 encapsulated in IPv6:
+        IPv6 header, L2
+
+        :param ipv6address dst_outer: outer IPv6 destination address
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = (IPv6(src='1234::1', dst=dst_outer, nh=143) / eth)
+        return p
+
+    def get_payload_info(self, packet):
+        """ Extract the payload_info from the packet
+        """
+        # in most cases, payload_info is in packet[Raw]
+        # but packet[Raw] gives the complete payload
+        # (incl L2 header) for the T.Encaps L2 case
+        try:
+            payload_info = self.payload_to_info(packet[Raw])
+
+        except:
+            # remote L2 header from packet[Raw]:
+            # take packet[Raw], convert it to an Ether layer
+            # and then extract Raw from it
+            payload_info = self.payload_to_info(
+                Ether(scapy.compat.r(packet[Raw]))[Raw])
+
+        return payload_info
+
+    def verify_captured_pkts(self, dst_if, capture, compare_func):
+        """
+        Verify captured packet stream for specified interface.
+        Compare ingress with egress packets using the specified compare fn
+
+        :param dst_if: egress interface of DUT
+        :param capture: captured packets
+        :param compare_func: function to compare in and out packet
+        """
+        self.logger.info("Verifying capture on interface %s using function %s"
+                         % (dst_if.name, compare_func.__name__))
+
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = dst_if.sw_if_index
+
+        for packet in capture:
+            try:
+                # extract payload_info from packet's payload
+                payload_info = self.get_payload_info(packet)
+                packet_index = payload_info.index
+
+                self.logger.debug("Verifying packet with index %d"
+                                  % (packet_index))
+                # packet should have arrived on the expected interface
+                self.assertEqual(payload_info.dst, dst_sw_if_index)
+                self.logger.debug(
+                    "Got packet on interface %s: src=%u (idx=%u)" %
+                    (dst_if.name, payload_info.src, packet_index))
+
+                # search for payload_info with same src and dst if_index
+                # this will give us the transmitted packet
+                next_info = self.get_next_packet_info_for_interface2(
+                    payload_info.src, dst_sw_if_index,
+                    last_info[payload_info.src])
+                last_info[payload_info.src] = next_info
+                # next_info should not be None
+                self.assertTrue(next_info is not None)
+                # index of tx and rx packets should be equal
+                self.assertEqual(packet_index, next_info.index)
+                # data field of next_info contains the tx packet
+                txed_packet = next_info.data
+
+                self.logger.debug(ppp("Transmitted packet:",
+                                      txed_packet))  # ppp=Pretty Print Packet
+
+                self.logger.debug(ppp("Received packet:", packet))
+
+                # compare rcvd packet with expected packet using compare_func
+                compare_func(txed_packet, packet)
+
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # FIXME: there is no need to check manually that all the packets
+        #        arrived (already done so by get_capture); checking here
+        #        prevents testing packets that are expected to be dropped, so
+        #        commenting this out for now
+
+        # have all expected packets arrived?
+        # for i in self.pg_interfaces:
+        #    remaining_packet = self.get_next_packet_info_for_interface2(
+        #        i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+        #    self.assertTrue(remaining_packet is None,
+        #                    "Interface %s: Packet expected from interface %s "
+        #                    "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_srv6_ad.py b/test/test_srv6_ad.py
new file mode 100644
index 0000000..2627df3
--- /dev/null
+++ b/test/test_srv6_ad.py
@@ -0,0 +1,809 @@
+#!/usr/bin/env python3
+
+import unittest
+import binascii
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Dynamic Proxy plugin Test Case """
+
+    @classmethod
+    def setUpClass(self):
+        super(TestSRv6, self).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSRv6, cls).tearDownClass()
+
+    def setUp(self):
+        """ Perform test setup before each test case.
+        """
+        super(TestSRv6, self).setUp()
+
+        # packet sizes, inclusive L2 overhead
+        self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+        # reset packet_infos
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """ Clean up test setup after each test case.
+        """
+        self.teardown_interfaces()
+
+        super(TestSRv6, self).tearDown()
+
+    def configure_interface(self,
+                            interface,
+                            ipv6=False, ipv4=False,
+                            ipv6_table_id=0, ipv4_table_id=0):
+        """ Configure interface.
+        :param ipv6: configure IPv6 on interface
+        :param ipv4: configure IPv4 on interface
+        :param ipv6_table_id: FIB table_id for IPv6
+        :param ipv4_table_id: FIB table_id for IPv4
+        """
+        self.logger.debug("Configuring interface %s" % (interface.name))
+        if ipv6:
+            self.logger.debug("Configuring IPv6")
+            interface.set_table_ip6(ipv6_table_id)
+            interface.config_ip6()
+            interface.resolve_ndp(timeout=5)
+        if ipv4:
+            self.logger.debug("Configuring IPv4")
+            interface.set_table_ip4(ipv4_table_id)
+            interface.config_ip4()
+            interface.resolve_arp()
+        interface.admin_up()
+
+    def setup_interfaces(self, ipv6=[], ipv4=[],
+                         ipv6_table_id=[], ipv4_table_id=[]):
+        """ Create and configure interfaces.
+
+        :param ipv6: list of interface IPv6 capabilities
+        :param ipv4: list of interface IPv4 capabilities
+        :param ipv6_table_id: list of intf IPv6 FIB table_ids
+        :param ipv4_table_id: list of intf IPv4 FIB table_ids
+        :returns: List of created interfaces.
+        """
+        # how many interfaces?
+        if len(ipv6):
+            count = len(ipv6)
+        else:
+            count = len(ipv4)
+        self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+        # fill up ipv6 and ipv4 lists if needed
+        # not enabled (False) is the default
+        if len(ipv6) < count:
+            ipv6 += (count - len(ipv6)) * [False]
+        if len(ipv4) < count:
+            ipv4 += (count - len(ipv4)) * [False]
+
+        # fill up table_id lists if needed
+        # table_id 0 (global) is the default
+        if len(ipv6_table_id) < count:
+            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+        if len(ipv4_table_id) < count:
+            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+        # create 'count' pg interfaces
+        self.create_pg_interfaces(range(count))
+
+        # setup all interfaces
+        for i in range(count):
+            intf = self.pg_interfaces[i]
+            self.configure_interface(intf,
+                                     ipv6[i], ipv4[i],
+                                     ipv6_table_id[i], ipv4_table_id[i])
+
+        if any(ipv6):
+            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+        if any(ipv4):
+            self.logger.debug(self.vapi.cli("show ip4 neighbors"))
+        self.logger.debug(self.vapi.cli("show interface"))
+        self.logger.debug(self.vapi.cli("show hardware"))
+
+        return self.pg_interfaces
+
+    def teardown_interfaces(self):
+        """ Unconfigure and bring down interface.
+        """
+        self.logger.debug("Tearing down interfaces")
+        # tear down all interfaces
+        # AFAIK they cannot be deleted
+        for i in self.pg_interfaces:
+            self.logger.debug("Tear down interface %s" % (i.name))
+            i.admin_down()
+            i.unconfig()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+
+    def test_SRv6_End_AD_IPv6(self):
+        """ Test SRv6 End.AD behavior with IPv6 traffic.
+        """
+        self.src_addr = 'a0::'
+        self.sid_list = ['a1::', 'a2::a6', 'a3::']
+        self.test_sid_index = 1
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + \
+                  self.sid_list[self.test_sid_index] + \
+                  " behavior end.ad" + \
+                  " nh " + self.pg1.remote_ip6 + \
+                  " oif " + self.pg1.name + \
+                  " iif " + self.pg1.name
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv6 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv6(
+            srcaddr=self.src_addr,
+            sidlist=self.sid_list[::-1],
+            segleft=len(self.sid_list) - self.test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AD_IPv6_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv6()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AD_IPv6_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        cli_str = "sr localsid del address " + \
+                  self.sid_list[self.test_sid_index]
+        self.vapi.cli(cli_str)
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AD_IPv6_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD with IPv6
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the hlim field
+        #   -> adjust tx'ed hlim to expected hlim
+        tx_ip2.hlim = tx_ip2.hlim - 1
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AD_IPv6_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.src_addr)
+        # received ip.dst should be equal to expected sidlist next segment
+        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        # rx'ed seglist should be equal to SID-list in reversed order
+        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
+        # segleft should be equal to previous segleft value minus 1
+        self.assertEqual(rx_srh.segleft,
+                         len(self.sid_list) - self.test_sid_index - 2)
+        # lastentry should be equal to the SID-list length minus 1
+        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the hop-limit field
+        tx_ip = tx_pkt.getlayer(IPv6)
+        #   -> update tx'ed hlim to the expected hlim
+        tx_ip.hlim -= 1
+        #   -> check payload
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def test_SRv6_End_AD_IPv4(self):
+        """ Test SRv6 End.AD behavior with IPv4 traffic.
+        """
+        self.src_addr = 'a0::'
+        self.sid_list = ['a1::', 'a2::a4', 'a3::']
+        self.test_sid_index = 1
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + \
+                  self.sid_list[self.test_sid_index] + \
+                  " behavior end.ad" + \
+                  " nh " + self.pg1.remote_ip4 + \
+                  " oif " + self.pg1.name + \
+                  " iif " + self.pg1.name
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv4 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv4(
+            srcaddr=self.src_addr,
+            sidlist=self.sid_list[::-1],
+            segleft=len(self.sid_list) - self.test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AD_IPv4_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv4()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AD_IPv4_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        cli_str = "sr localsid del address " + \
+                  self.sid_list[self.test_sid_index]
+        self.vapi.cli(cli_str)
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AD_IPv4_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD with IPv4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get IPv4 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IP)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IP)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip2.ttl = tx_ip2.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip2.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AD_IPv4_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.src_addr)
+        # received ip.dst should be equal to expected sidlist next segment
+        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        # rx'ed seglist should be equal to SID-list in reversed order
+        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
+        # segleft should be equal to previous segleft value minus 1
+        self.assertEqual(rx_srh.segleft,
+                         len(self.sid_list) - self.test_sid_index - 2)
+        # lastentry should be equal to the SID-list length minus 1
+        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the ttl field and ip checksum
+        tx_ip = tx_pkt.getlayer(IP)
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip.ttl = tx_ip.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip.chksum = None
+        #   -> read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        self.assertEqual(rx_srh.payload, IP(scapy.compat.raw(tx_ip)))
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def test_SRv6_End_AD_L2(self):
+        """ Test SRv6 End.AD behavior with L2 traffic.
+        """
+        self.src_addr = 'a0::'
+        self.sid_list = ['a1::', 'a2::a4', 'a3::']
+        self.test_sid_index = 1
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, False])
+
+        # configure route to next segment
+        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + \
+                  self.sid_list[self.test_sid_index] + \
+                  " behavior end.ad" + \
+                  " oif " + self.pg1.name + \
+                  " iif " + self.pg1.name
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare L2 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_L2(
+            srcaddr=self.src_addr,
+            sidlist=self.sid_list[::-1],
+            segleft=len(self.sid_list) - self.test_sid_index - 1,
+            vlan=0)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AD_L2_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare L2 header for returning packets
+        packet_header2 = self.create_packet_header_L2()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AD_L2_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        cli_str = "sr localsid del address " + \
+                  self.sid_list[self.test_sid_index]
+        self.vapi.cli(cli_str)
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AD_L2_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD with L2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get IPv4 header of rx'ed packet
+        rx_eth = rx_pkt.getlayer(Ether)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we can't just get the 2nd Ether layer
+        # get the Raw content and dissect it as Ether
+        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_eth pkt should be equal to tx_eth1
+        self.assertEqual(rx_eth, tx_eth1)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AD_L2_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        ####
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.src_addr)
+        # received ip.dst should be equal to expected sidlist next segment
+        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        # rx'ed seglist should be equal to SID-list in reversed order
+        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
+        # segleft should be equal to previous segleft value minus 1
+        self.assertEqual(rx_srh.segleft,
+                         len(self.sid_list) - self.test_sid_index - 2)
+        # lastentry should be equal to the SID-list length minus 1
+        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        tx_ether = tx_pkt.getlayer(Ether)
+        self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+                      count):
+        """Create SRv6 input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for
+        :param VppInterface dst_if: destination interface of packet stream
+        :param packet_header: Layer3 scapy packet headers,
+                L2 is added when not provided,
+                Raw(payload) with packet_info is added
+        :param list packet_sizes: packet stream pckt sizes,sequentially applied
+               to packets in stream have
+        :param int count: number of packets in packet stream
+        :return: list of packets
+        """
+        self.logger.info("Creating packets")
+        pkts = []
+        for i in range(0, count - 1):
+            payload_info = self.create_packet_info(src_if, dst_if)
+            self.logger.debug(
+                "Creating packet with index %d" % (payload_info.index))
+            payload = self.info_to_payload(payload_info)
+            # add L2 header if not yet provided in packet_header
+            if packet_header.getlayer(0).name == 'Ethernet':
+                p = packet_header / Raw(payload)
+            else:
+                p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) / \
+                    packet_header / Raw(payload)
+            size = packet_sizes[i % len(packet_sizes)]
+            self.logger.debug("Packet size %d" % (size))
+            self.extend_packet(p, size)
+            # we need to store the packet with the automatic fields computed
+            # read back the dumped packet (with str())
+            # to force computing these fields
+            # probably other ways are possible
+            p = Ether(scapy.compat.raw(p))
+            payload_info.data = p.copy()
+            self.logger.debug(ppp("Created packet:", p))
+            pkts.append(p)
+        self.logger.info("Done creating packets")
+        return pkts
+
+    def send_and_verify_pkts(self, input, pkts, output, compare_func):
+        """Send packets and verify received packets using compare_func
+
+        :param input: ingress interface of DUT
+        :param pkts: list of packets to transmit
+        :param output: egress interface of DUT
+        :param compare_func: function to compare in and out packets
+        """
+        # add traffic stream to input interface
+        input.add_stream(pkts)
+
+        # enable capture on all interfaces
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # start traffic
+        self.logger.info("Starting traffic")
+        self.pg_start()
+
+        # get output capture
+        self.logger.info("Getting packet capture")
+        capture = output.get_capture()
+
+        # assert nothing was captured on input interface
+        # input.assert_nothing_captured()
+
+        # verify captured packets
+        self.verify_captured_pkts(output, capture, compare_func)
+
+    def create_packet_header_IPv6(self):
+        """Create packet header: IPv6 header, UDP header
+
+        :param dst: IPv6 destination address
+
+        IPv6 source address is 1234::1
+        IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src='1234::1', dst='4321::1') / UDP(sport=1234, dport=1234)
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv6(self, srcaddr, sidlist, segleft):
+        """Create packet header: IPv6 encapsulated in SRv6:
+        IPv6 header with SRH, IPv6 header, UDP header
+
+        :param int srcaddr: outer source address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 source address is set to srcaddr
+        Outer IPv6 destination address is set to sidlist[segleft]
+        Inner IPv6 source addresses is 1234::1
+        Inner IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
+            IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                     segleft=segleft, nh=41) / \
+            IPv6(src='1234::1', dst='4321::1') / \
+            UDP(sport=1234, dport=1234)
+        return p
+
+    def create_packet_header_IPv4(self):
+        """Create packet header: IPv4 header, UDP header
+
+        :param dst: IPv4 destination address
+
+        IPv4 source address is 123.1.1.1
+        IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = IP(src='123.1.1.1', dst='124.1.1.1') / UDP(sport=1234, dport=1234)
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv4(self, srcaddr, sidlist, segleft):
+        """Create packet header: IPv4 encapsulated in SRv6:
+        IPv6 header with SRH, IPv4 header, UDP header
+
+        :param int srcaddr: outer source address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 source address is set to srcaddr
+        Outer IPv6 destination address is set to sidlist[segleft]
+        Inner IPv4 source address is 123.1.1.1
+        Inner IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
+            IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                     segleft=segleft, nh=4) / \
+            IP(src='123.1.1.1', dst='124.1.1.1') / \
+            UDP(sport=1234, dport=1234)
+        return p
+
+    def create_packet_header_L2(self, vlan=0):
+        """Create packet header: L2 header
+
+        :param vlan: if vlan!=0 then add 802.1q header
+        """
+        # Note: the dst addr ('00:55:44:33:22:11') is used in
+        # the compare function compare_rx_tx_packet_T_Encaps_L2
+        # to detect presence of L2 in SRH payload
+        p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            p /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            p.type = etype
+        return p
+
+    def create_packet_header_IPv6_SRH_L2(self, srcaddr, sidlist, segleft,
+                                         vlan=0):
+        """Create packet header: L2 encapsulated in SRv6:
+        IPv6 header with SRH, L2
+
+        :param int srcaddr: IPv6 source address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+
+        IPv6 source address is set to srcaddr
+        IPv6 destination address is set to sidlist[segleft]
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
+            IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                     segleft=segleft, nh=143) / \
+            eth
+        return p
+
+    def get_payload_info(self, packet):
+        """ Extract the payload_info from the packet
+        """
+        # in most cases, payload_info is in packet[Raw]
+        # but packet[Raw] gives the complete payload
+        # (incl L2 header) for the T.Encaps L2 case
+        try:
+            payload_info = self.payload_to_info(packet[Raw])
+
+        except:
+            # remote L2 header from packet[Raw]:
+            # take packet[Raw], convert it to an Ether layer
+            # and then extract Raw from it
+            payload_info = self.payload_to_info(
+                Ether(scapy.compat.raw(packet[Raw]))[Raw])
+
+        return payload_info
+
+    def verify_captured_pkts(self, dst_if, capture, compare_func):
+        """
+        Verify captured packet stream for specified interface.
+        Compare ingress with egress packets using the specified compare fn
+
+        :param dst_if: egress interface of DUT
+        :param capture: captured packets
+        :param compare_func: function to compare in and out packet
+        """
+        self.logger.info("Verifying capture on interface %s using function %s"
+                         % (dst_if.name, compare_func.__name__))
+
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = dst_if.sw_if_index
+
+        for packet in capture:
+            try:
+                # extract payload_info from packet's payload
+                payload_info = self.get_payload_info(packet)
+                packet_index = payload_info.index
+
+                self.logger.debug("Verifying packet with index %d"
+                                  % (packet_index))
+                # packet should have arrived on the expected interface
+                self.assertEqual(payload_info.dst, dst_sw_if_index)
+                self.logger.debug(
+                    "Got packet on interface %s: src=%u (idx=%u)" %
+                    (dst_if.name, payload_info.src, packet_index))
+
+                # search for payload_info with same src and dst if_index
+                # this will give us the transmitted packet
+                next_info = self.get_next_packet_info_for_interface2(
+                    payload_info.src, dst_sw_if_index,
+                    last_info[payload_info.src])
+                last_info[payload_info.src] = next_info
+                # next_info should not be None
+                self.assertTrue(next_info is not None)
+                # index of tx and rx packets should be equal
+                self.assertEqual(packet_index, next_info.index)
+                # data field of next_info contains the tx packet
+                txed_packet = next_info.data
+
+                self.logger.debug(ppp("Transmitted packet:",
+                                      txed_packet))  # ppp=Pretty Print Packet
+
+                self.logger.debug(ppp("Received packet:", packet))
+
+                # compare rcvd packet with expected packet using compare_func
+                compare_func(txed_packet, packet)
+
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # have all expected packets arrived?
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(remaining_packet is None,
+                            "Interface %s: Packet expected from interface %s "
+                            "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_srv6_ad_flow.py b/test/test_srv6_ad_flow.py
new file mode 100644
index 0000000..f545208
--- /dev/null
+++ b/test/test_srv6_ad_flow.py
@@ -0,0 +1,637 @@
+#!/usr/bin/env python3
+
+import unittest
+import binascii
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Flow-based Dynamic Proxy plugin Test Case """
+
+    @classmethod
+    def setUpClass(self):
+        super(TestSRv6, self).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSRv6, cls).tearDownClass()
+
+    def setUp(self):
+        """ Perform test setup before each test case.
+        """
+        super(TestSRv6, self).setUp()
+
+        # packet sizes, inclusive L2 overhead
+        self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+        # reset packet_infos
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """ Clean up test setup after each test case.
+        """
+        self.teardown_interfaces()
+
+        super(TestSRv6, self).tearDown()
+
+    def configure_interface(self,
+                            interface,
+                            ipv6=False, ipv4=False,
+                            ipv6_table_id=0, ipv4_table_id=0):
+        """ Configure interface.
+        :param ipv6: configure IPv6 on interface
+        :param ipv4: configure IPv4 on interface
+        :param ipv6_table_id: FIB table_id for IPv6
+        :param ipv4_table_id: FIB table_id for IPv4
+        """
+        self.logger.debug("Configuring interface %s" % (interface.name))
+        if ipv6:
+            self.logger.debug("Configuring IPv6")
+            interface.set_table_ip6(ipv6_table_id)
+            interface.config_ip6()
+            interface.resolve_ndp(timeout=5)
+        if ipv4:
+            self.logger.debug("Configuring IPv4")
+            interface.set_table_ip4(ipv4_table_id)
+            interface.config_ip4()
+            interface.resolve_arp()
+        interface.admin_up()
+
+    def setup_interfaces(self, ipv6=[], ipv4=[],
+                         ipv6_table_id=[], ipv4_table_id=[]):
+        """ Create and configure interfaces.
+
+        :param ipv6: list of interface IPv6 capabilities
+        :param ipv4: list of interface IPv4 capabilities
+        :param ipv6_table_id: list of intf IPv6 FIB table_ids
+        :param ipv4_table_id: list of intf IPv4 FIB table_ids
+        :returns: List of created interfaces.
+        """
+        # how many interfaces?
+        if len(ipv6):
+            count = len(ipv6)
+        else:
+            count = len(ipv4)
+        self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+        # fill up ipv6 and ipv4 lists if needed
+        # not enabled (False) is the default
+        if len(ipv6) < count:
+            ipv6 += (count - len(ipv6)) * [False]
+        if len(ipv4) < count:
+            ipv4 += (count - len(ipv4)) * [False]
+
+        # fill up table_id lists if needed
+        # table_id 0 (global) is the default
+        if len(ipv6_table_id) < count:
+            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+        if len(ipv4_table_id) < count:
+            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+        # create 'count' pg interfaces
+        self.create_pg_interfaces(range(count))
+
+        # setup all interfaces
+        for i in range(count):
+            intf = self.pg_interfaces[i]
+            self.configure_interface(intf,
+                                     ipv6[i], ipv4[i],
+                                     ipv6_table_id[i], ipv4_table_id[i])
+
+        if any(ipv6):
+            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+        if any(ipv4):
+            self.logger.debug(self.vapi.cli("show ip4 neighbors"))
+        self.logger.debug(self.vapi.cli("show interface"))
+        self.logger.debug(self.vapi.cli("show hardware"))
+
+        return self.pg_interfaces
+
+    def teardown_interfaces(self):
+        """ Unconfigure and bring down interface.
+        """
+        self.logger.debug("Tearing down interfaces")
+        # tear down all interfaces
+        # AFAIK they cannot be deleted
+        for i in self.pg_interfaces:
+            self.logger.debug("Tear down interface %s" % (i.name))
+            i.admin_down()
+            i.unconfig()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+
+    def test_SRv6_End_AD_IPv6(self):
+        """ Test SRv6 End.AD behavior with IPv6 traffic.
+        """
+        self.src_addr = 'a0::'
+        self.sid_list = ['a1::', 'a2::a6', 'a3::']
+        self.test_sid_index = 1
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + \
+                  self.sid_list[self.test_sid_index] + \
+                  " behavior end.ad.flow" + \
+                  " nh " + self.pg1.remote_ip6 + \
+                  " oif " + self.pg1.name + \
+                  " iif " + self.pg1.name
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv6 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv6(
+            srcaddr=self.src_addr,
+            sidlist=self.sid_list[::-1],
+            segleft=len(self.sid_list) - self.test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AD_IPv6_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv6()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AD_IPv6_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        cli_str = "sr localsid del address " + \
+                  self.sid_list[self.test_sid_index]
+        self.vapi.cli(cli_str)
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AD_IPv6_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD with IPv6
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the hlim field
+        #   -> adjust tx'ed hlim to expected hlim
+        tx_ip2.hlim = tx_ip2.hlim - 1
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AD_IPv6_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.src_addr)
+        # received ip.dst should be equal to expected sidlist next segment
+        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        # rx'ed seglist should be equal to SID-list in reversed order
+        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
+        # segleft should be equal to previous segleft value minus 1
+        self.assertEqual(rx_srh.segleft,
+                         len(self.sid_list) - self.test_sid_index - 2)
+        # lastentry should be equal to the SID-list length minus 1
+        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the hop-limit field
+        tx_ip = tx_pkt.getlayer(IPv6)
+        #   -> update tx'ed hlim to the expected hlim
+        tx_ip.hlim -= 1
+        #   -> check payload
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def test_SRv6_End_AD_IPv4(self):
+        """ Test SRv6 End.AD behavior with IPv4 traffic.
+        """
+        self.src_addr = 'a0::'
+        self.sid_list = ['a1::', 'a2::a4', 'a3::']
+        self.test_sid_index = 1
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + \
+                  self.sid_list[self.test_sid_index] + \
+                  " behavior end.ad.flow" + \
+                  " nh " + self.pg1.remote_ip4 + \
+                  " oif " + self.pg1.name + \
+                  " iif " + self.pg1.name
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv4 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv4(
+            srcaddr=self.src_addr,
+            sidlist=self.sid_list[::-1],
+            segleft=len(self.sid_list) - self.test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AD_IPv4_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv4()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AD_IPv4_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        cli_str = "sr localsid del address " + \
+                  self.sid_list[self.test_sid_index]
+        self.vapi.cli(cli_str)
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AD_IPv4_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD with IPv4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get IPv4 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IP)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IP)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip2.ttl = tx_ip2.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip2.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AD_IPv4_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AD
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.src_addr)
+        # received ip.dst should be equal to expected sidlist next segment
+        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        # rx'ed seglist should be equal to SID-list in reversed order
+        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
+        # segleft should be equal to previous segleft value minus 1
+        self.assertEqual(rx_srh.segleft,
+                         len(self.sid_list) - self.test_sid_index - 2)
+        # lastentry should be equal to the SID-list length minus 1
+        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the ttl field and ip checksum
+        tx_ip = tx_pkt.getlayer(IP)
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip.ttl = tx_ip.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip.chksum = None
+        #   -> read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        self.assertEqual(rx_srh.payload, IP(scapy.compat.raw(tx_ip)))
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+                      count):
+        """Create SRv6 input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for
+        :param VppInterface dst_if: destination interface of packet stream
+        :param packet_header: Layer3 scapy packet headers,
+                L2 is added when not provided,
+                Raw(payload) with packet_info is added
+        :param list packet_sizes: packet stream pckt sizes,sequentially applied
+               to packets in stream have
+        :param int count: number of packets in packet stream
+        :return: list of packets
+        """
+        self.logger.info("Creating packets")
+        pkts = []
+        for i in range(0, count - 1):
+            payload_info = self.create_packet_info(src_if, dst_if)
+            self.logger.debug(
+                "Creating packet with index %d" % (payload_info.index))
+            payload = self.info_to_payload(payload_info)
+            # add L2 header if not yet provided in packet_header
+            if packet_header.getlayer(0).name == 'Ethernet':
+                p = packet_header / Raw(payload)
+            else:
+                p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) / \
+                    packet_header / Raw(payload)
+            size = packet_sizes[i % len(packet_sizes)]
+            self.logger.debug("Packet size %d" % (size))
+            self.extend_packet(p, size)
+            # we need to store the packet with the automatic fields computed
+            # read back the dumped packet (with str())
+            # to force computing these fields
+            # probably other ways are possible
+            p = Ether(scapy.compat.raw(p))
+            payload_info.data = p.copy()
+            self.logger.debug(ppp("Created packet:", p))
+            pkts.append(p)
+        self.logger.info("Done creating packets")
+        return pkts
+
+    def send_and_verify_pkts(self, input, pkts, output, compare_func):
+        """Send packets and verify received packets using compare_func
+
+        :param input: ingress interface of DUT
+        :param pkts: list of packets to transmit
+        :param output: egress interface of DUT
+        :param compare_func: function to compare in and out packets
+        """
+        # add traffic stream to input interface
+        input.add_stream(pkts)
+
+        # enable capture on all interfaces
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # start traffic
+        self.logger.info("Starting traffic")
+        self.pg_start()
+
+        # get output capture
+        self.logger.info("Getting packet capture")
+        capture = output.get_capture()
+
+        # assert nothing was captured on input interface
+        # input.assert_nothing_captured()
+
+        # verify captured packets
+        self.verify_captured_pkts(output, capture, compare_func)
+
+    def create_packet_header_IPv6(self, saddr='1234::1', daddr='4321::1',
+                                  sport=1234, dport=1234):
+        """Create packet header: IPv6 header, UDP header
+
+        :param dst: IPv6 destination address
+
+        IPv6 source address is 1234::1
+        IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src=saddr, dst=daddr) / UDP(sport=sport, dport=dport)
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv6(self, srcaddr, sidlist, segleft,
+                                           insrc='1234::1', indst='4321::1',
+                                           sport=1234, dport=1234):
+        """Create packet header: IPv6 encapsulated in SRv6:
+        IPv6 header with SRH, IPv6 header, UDP header
+
+        :param int srcaddr: outer source address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 source address is set to srcaddr
+        Outer IPv6 destination address is set to sidlist[segleft]
+        Inner IPv6 source addresses is 1234::1
+        Inner IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
+            IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                     segleft=segleft, nh=41) / \
+            IPv6(src=insrc, dst=indst) / \
+            UDP(sport=sport, dport=dport)
+        return p
+
+    def create_packet_header_IPv4(self):
+        """Create packet header: IPv4 header, UDP header
+
+        :param dst: IPv4 destination address
+
+        IPv4 source address is 123.1.1.1
+        IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = IP(src='123.1.1.1', dst='124.1.1.1') / UDP(sport=1234, dport=1234)
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv4(self, srcaddr, sidlist, segleft):
+        """Create packet header: IPv4 encapsulated in SRv6:
+        IPv6 header with SRH, IPv4 header, UDP header
+
+        :param int srcaddr: outer source address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 source address is set to srcaddr
+        Outer IPv6 destination address is set to sidlist[segleft]
+        Inner IPv4 source address is 123.1.1.1
+        Inner IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
+            IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                     segleft=segleft, nh=4) / \
+            IP(src='123.1.1.1', dst='124.1.1.1') / \
+            UDP(sport=1234, dport=1234)
+        return p
+
+    def get_payload_info(self, packet):
+        """ Extract the payload_info from the packet
+        """
+        # in most cases, payload_info is in packet[Raw]
+        # but packet[Raw] gives the complete payload
+        # (incl L2 header) for the T.Encaps L2 case
+        try:
+            payload_info = self.payload_to_info(packet[Raw])
+
+        except:
+            # remote L2 header from packet[Raw]:
+            # take packet[Raw], convert it to an Ether layer
+            # and then extract Raw from it
+            payload_info = self.payload_to_info(
+                Ether(scapy.compat.raw(packet[Raw]))[Raw])
+
+        return payload_info
+
+    def verify_captured_pkts(self, dst_if, capture, compare_func):
+        """
+        Verify captured packet stream for specified interface.
+        Compare ingress with egress packets using the specified compare fn
+
+        :param dst_if: egress interface of DUT
+        :param capture: captured packets
+        :param compare_func: function to compare in and out packet
+        """
+        self.logger.info("Verifying capture on interface %s using function %s"
+                         % (dst_if.name, compare_func.__name__))
+
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = dst_if.sw_if_index
+
+        for packet in capture:
+            try:
+                # extract payload_info from packet's payload
+                payload_info = self.get_payload_info(packet)
+                packet_index = payload_info.index
+
+                self.logger.debug("Verifying packet with index %d"
+                                  % (packet_index))
+                # packet should have arrived on the expected interface
+                self.assertEqual(payload_info.dst, dst_sw_if_index)
+                self.logger.debug(
+                    "Got packet on interface %s: src=%u (idx=%u)" %
+                    (dst_if.name, payload_info.src, packet_index))
+
+                # search for payload_info with same src and dst if_index
+                # this will give us the transmitted packet
+                next_info = self.get_next_packet_info_for_interface2(
+                    payload_info.src, dst_sw_if_index,
+                    last_info[payload_info.src])
+                last_info[payload_info.src] = next_info
+                # next_info should not be None
+                self.assertTrue(next_info is not None)
+                # index of tx and rx packets should be equal
+                self.assertEqual(packet_index, next_info.index)
+                # data field of next_info contains the tx packet
+                txed_packet = next_info.data
+
+                self.logger.debug(ppp("Transmitted packet:",
+                                      txed_packet))  # ppp=Pretty Print Packet
+
+                self.logger.debug(ppp("Received packet:", packet))
+
+                # compare rcvd packet with expected packet using compare_func
+                compare_func(txed_packet, packet)
+
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # have all expected packets arrived?
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(remaining_packet is None,
+                            "Interface %s: Packet expected from interface %s "
+                            "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_srv6_as.py b/test/test_srv6_as.py
new file mode 100755
index 0000000..eec44e3
--- /dev/null
+++ b/test/test_srv6_as.py
@@ -0,0 +1,887 @@
+#!/usr/bin/env python3
+
+import unittest
+import binascii
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Static Proxy plugin Test Case """
+
+    @classmethod
+    def setUpClass(self):
+        super(TestSRv6, self).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSRv6, cls).tearDownClass()
+
+    def setUp(self):
+        """ Perform test setup before each test case.
+        """
+        super(TestSRv6, self).setUp()
+
+        # packet sizes, inclusive L2 overhead
+        self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+        # reset packet_infos
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """ Clean up test setup after each test case.
+        """
+        self.teardown_interfaces()
+
+        super(TestSRv6, self).tearDown()
+
+    def configure_interface(self,
+                            interface,
+                            ipv6=False, ipv4=False,
+                            ipv6_table_id=0, ipv4_table_id=0):
+        """ Configure interface.
+        :param ipv6: configure IPv6 on interface
+        :param ipv4: configure IPv4 on interface
+        :param ipv6_table_id: FIB table_id for IPv6
+        :param ipv4_table_id: FIB table_id for IPv4
+        """
+        self.logger.debug("Configuring interface %s" % (interface.name))
+        if ipv6:
+            self.logger.debug("Configuring IPv6")
+            interface.set_table_ip6(ipv6_table_id)
+            interface.config_ip6()
+            interface.resolve_ndp(timeout=5)
+        if ipv4:
+            self.logger.debug("Configuring IPv4")
+            interface.set_table_ip4(ipv4_table_id)
+            interface.config_ip4()
+            interface.resolve_arp()
+        interface.admin_up()
+
+    def setup_interfaces(self, ipv6=[], ipv4=[],
+                         ipv6_table_id=[], ipv4_table_id=[]):
+        """ Create and configure interfaces.
+
+        :param ipv6: list of interface IPv6 capabilities
+        :param ipv4: list of interface IPv4 capabilities
+        :param ipv6_table_id: list of intf IPv6 FIB table_ids
+        :param ipv4_table_id: list of intf IPv4 FIB table_ids
+        :returns: List of created interfaces.
+        """
+        # how many interfaces?
+        if len(ipv6):
+            count = len(ipv6)
+        else:
+            count = len(ipv4)
+        self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+        # fill up ipv6 and ipv4 lists if needed
+        # not enabled (False) is the default
+        if len(ipv6) < count:
+            ipv6 += (count - len(ipv6)) * [False]
+        if len(ipv4) < count:
+            ipv4 += (count - len(ipv4)) * [False]
+
+        # fill up table_id lists if needed
+        # table_id 0 (global) is the default
+        if len(ipv6_table_id) < count:
+            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+        if len(ipv4_table_id) < count:
+            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+        # create 'count' pg interfaces
+        self.create_pg_interfaces(range(count))
+
+        # setup all interfaces
+        for i in range(count):
+            intf = self.pg_interfaces[i]
+            self.configure_interface(intf,
+                                     ipv6[i], ipv4[i],
+                                     ipv6_table_id[i], ipv4_table_id[i])
+
+        if any(ipv6):
+            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+        if any(ipv4):
+            self.logger.debug(self.vapi.cli("show ip4 neighbors"))
+        self.logger.debug(self.vapi.cli("show interface"))
+        self.logger.debug(self.vapi.cli("show hardware"))
+
+        return self.pg_interfaces
+
+    def teardown_interfaces(self):
+        """ Unconfigure and bring down interface.
+        """
+        self.logger.debug("Tearing down interfaces")
+        # tear down all interfaces
+        # AFAIK they cannot be deleted
+        for i in self.pg_interfaces:
+            self.logger.debug("Tear down interface %s" % (i.name))
+            i.admin_down()
+            i.unconfig()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+
+    def test_SRv6_End_AS_IPv6_noSRH(self):
+        """ Test SRv6 End.AS behavior with IPv6 traffic and no SRH rewrite.
+        """
+        self.run_SRv6_End_AS_IPv6(
+            sid_list=['a1::', 'a2::a6', 'a3::'],
+            test_sid_index=1,
+            rewrite_src_addr='a2::')
+
+    def test_SRv6_End_AS_IPv6_SRH(self):
+        """ Test SRv6 End.AS behavior with IPv6 traffic and SRH rewrite.
+        """
+        self.run_SRv6_End_AS_IPv6(
+            sid_list=['a1::a6', 'a2::', 'a3::'],
+            test_sid_index=0,
+            rewrite_src_addr='a1::')
+
+    def test_SRv6_End_AS_IPv4_noSRH(self):
+        """ Test SRv6 End.AS behavior with IPv4 traffic and no SRH rewrite.
+        """
+        self.run_SRv6_End_AS_IPv4(
+            sid_list=['a1::', 'a2::a6', 'a3::'],
+            test_sid_index=1,
+            rewrite_src_addr='a2::')
+
+    def test_SRv6_End_AS_IPv4_SRH(self):
+        """ Test SRv6 End.AS behavior with IPv4 traffic and SRH rewrite.
+        """
+        self.run_SRv6_End_AS_IPv4(
+            sid_list=['a1::a6', 'a2::', 'a3::'],
+            test_sid_index=0,
+            rewrite_src_addr='a1::')
+
+    def test_SRv6_End_AS_L2_noSRH(self):
+        """ Test SRv6 End.AS behavior with L2 traffic and no SRH rewrite.
+        """
+        self.run_SRv6_End_AS_L2(
+            sid_list=['a1::', 'a2::a6', 'a3::'],
+            test_sid_index=1,
+            rewrite_src_addr='a2::')
+
+    def test_SRv6_End_AS_L2_SRH(self):
+        """ Test SRv6 End.AS behavior with L2 traffic and SRH rewrite.
+        """
+        self.run_SRv6_End_AS_L2(
+            sid_list=['a1::a6', 'a2::', 'a3::'],
+            test_sid_index=0,
+            rewrite_src_addr='a1::')
+
+    def run_SRv6_End_AS_L2(self, sid_list, test_sid_index, rewrite_src_addr):
+        """ Run SRv6 End.AS test with L2 traffic.
+        """
+        self.rewrite_src_addr = rewrite_src_addr
+        self.rewrite_sid_list = sid_list[test_sid_index + 1::]
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, False])
+
+        # configure route to next segment
+        route = VppIpRoute(self, sid_list[test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + sid_list[test_sid_index] \
+            + " behavior end.as" \
+            + " oif " + self.pg1.name \
+            + " iif " + self.pg1.name \
+            + " src " + self.rewrite_src_addr
+        for s in self.rewrite_sid_list:
+            cli_str += " next " + s
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare L2 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_L2(
+                        sidlist=sid_list[::-1],
+                        segleft=len(sid_list) - test_sid_index - 1,
+                        vlan=0)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AS_L2_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare L2 header for returning packets
+        packet_header2 = self.create_packet_header_L2()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AS_L2_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        self.vapi.cli("sr localsid del address " + sid_list[test_sid_index])
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def run_SRv6_End_AS_IPv6(self, sid_list, test_sid_index, rewrite_src_addr):
+        """ Run SRv6 End.AS test with IPv6 traffic.
+        """
+        self.rewrite_src_addr = rewrite_src_addr
+        self.rewrite_sid_list = sid_list[test_sid_index + 1::]
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, sid_list[test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + sid_list[test_sid_index] \
+            + " behavior end.as" \
+            + " nh " + self.pg1.remote_ip6 \
+            + " oif " + self.pg1.name \
+            + " iif " + self.pg1.name \
+            + " src " + self.rewrite_src_addr
+        for s in self.rewrite_sid_list:
+            cli_str += " next " + s
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv6 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv6(
+                        sidlist=sid_list[::-1],
+                        segleft=len(sid_list) - test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AS_IPv6_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv6()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AS_IPv6_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        self.vapi.cli("sr localsid del address " + sid_list[test_sid_index])
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def run_SRv6_End_AS_IPv4(self, sid_list, test_sid_index, rewrite_src_addr):
+        """ Run SRv6 End.AS test with IPv4 traffic.
+        """
+        self.rewrite_src_addr = rewrite_src_addr
+        self.rewrite_sid_list = sid_list[test_sid_index + 1::]
+
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[True, True])
+
+        # configure route to next segment
+        route = VppIpRoute(self, sid_list[test_sid_index + 1], 128,
+                           [VppRoutePath(self.pg0.remote_ip6,
+                                         self.pg0.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID behavior
+        cli_str = "sr localsid address " + sid_list[test_sid_index] \
+            + " behavior end.as" \
+            + " nh " + self.pg1.remote_ip4 \
+            + " oif " + self.pg1.name \
+            + " iif " + self.pg1.name \
+            + " src " + self.rewrite_src_addr
+        for s in self.rewrite_sid_list:
+            cli_str += " next " + s
+        self.vapi.cli(cli_str)
+
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+
+        # prepare IPv4 in SRv6 headers
+        packet_header1 = self.create_packet_header_IPv6_SRH_IPv4(
+                        sidlist=sid_list[::-1],
+                        segleft=len(sid_list) - test_sid_index - 1)
+
+        # generate packets (pg0->pg1)
+        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
+                                  self.compare_rx_tx_packet_End_AS_IPv4_out)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # prepare IPv6 header for returning packets
+        packet_header2 = self.create_packet_header_IPv4()
+
+        # generate returning packets (pg1->pg0)
+        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
+                                   self.pg_packet_sizes, count)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
+                                  self.compare_rx_tx_packet_End_AS_IPv4_in)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        self.vapi.cli("sr localsid del address " + sid_list[test_sid_index])
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_End_AS_IPv6_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+
+        # expected segment-list (SRH order)
+        tx_seglist = self.rewrite_sid_list[::-1]
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.rewrite_src_addr)
+        # received ip.dst should be equal to expected sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+        if len(tx_seglist) > 1:
+            # rx'ed packet should have SRH
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # get SRH
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+            # rx'ed seglist should be equal to expected seglist
+            self.assertEqual(rx_srh.addresses, tx_seglist)
+            # segleft should be equal to size expected seglist-1
+            self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+            # segleft should be equal to lastentry
+            self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+            # get payload
+            payload = rx_srh.payload
+        else:
+            # rx'ed packet should NOT have SRH
+            self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # get payload
+            payload = rx_ip.payload
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the hop-limit field
+        #   -> update tx'ed hlim to the expected hlim
+        tx_ip.hlim = tx_ip.hlim - 1
+
+        self.assertEqual(payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AS_IPv4_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IP)
+
+        # expected segment-list (SRH order)
+        tx_seglist = self.rewrite_sid_list[::-1]
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.rewrite_src_addr)
+        # received ip.dst should be equal to expected sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+        if len(tx_seglist) > 1:
+            # rx'ed packet should have SRH and IPv4 header
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            self.assertTrue(rx_ip.payload.haslayer(IP))
+            # get SRH
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+            # rx'ed seglist should be equal to seglist
+            self.assertEqual(rx_srh.addresses, tx_seglist)
+            # segleft should be equal to size seglist-1
+            self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+            # segleft should be equal to lastentry
+            self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+            payload = rx_srh.payload
+        else:
+            # rx'ed packet should NOT have SRH
+            self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # get payload
+            payload = rx_ip.payload
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip.ttl = tx_ip.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip = IP(scapy.compat.raw(tx_ip))
+
+        self.assertEqual(payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AS_L2_in(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ether = tx_pkt.getlayer(Ether)
+
+        # expected segment-list (SRH order)
+        tx_seglist = self.rewrite_sid_list[::-1]
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, self.rewrite_src_addr)
+        # received ip.dst should be equal to expected sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+        if len(tx_seglist) > 1:
+            # rx'ed packet should have SRH
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # get SRH
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+            # rx'ed seglist should be equal to seglist
+            self.assertEqual(rx_srh.addresses, tx_seglist)
+            # segleft should be equal to size seglist-1
+            self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+            # segleft should be equal to lastentry
+            self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+            # nh should be "No Next Header" (143)
+            self.assertEqual(rx_srh.nh, 143)
+            # get payload
+            payload = rx_srh.payload
+        else:
+            # rx'ed packet should NOT have SRH
+            self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # get payload
+            payload = rx_ip.payload
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        self.assertEqual(Ether(scapy.compat.raw(payload)), tx_ether)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AS_IPv6_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS with IPv6
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the hlim field
+        #   -> adjust tx'ed hlim to expected hlim
+        tx_ip2.hlim = tx_ip2.hlim - 1
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AS_IPv4_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS with IPv4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get IPv4 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IP)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IP)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip2.ttl = tx_ip2.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip2.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_AS_L2_out(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.AS with L2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+
+        # get IPv4 header of rx'ed packet
+        rx_eth = rx_pkt.getlayer(Ether)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we can't just get the 2nd Ether layer
+        # get the Raw content and dissect it as Ether
+        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_eth pkt should be equal to tx_eth1
+        self.assertEqual(rx_eth, tx_eth1)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+                      count):
+        """Create SRv6 input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for
+        :param VppInterface dst_if: destination interface of packet stream
+        :param packet_header: Layer3 scapy packet headers,
+                L2 is added when not provided,
+                Raw(payload) with packet_info is added
+        :param list packet_sizes: packet stream pckt sizes,sequentially applied
+               to packets in stream have
+        :param int count: number of packets in packet stream
+        :return: list of packets
+        """
+        self.logger.info("Creating packets")
+        pkts = []
+        for i in range(0, count-1):
+            payload_info = self.create_packet_info(src_if, dst_if)
+            self.logger.debug(
+                "Creating packet with index %d" % (payload_info.index))
+            payload = self.info_to_payload(payload_info)
+            # add L2 header if not yet provided in packet_header
+            if packet_header.getlayer(0).name == 'Ethernet':
+                p = (packet_header /
+                     Raw(payload))
+            else:
+                p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                     packet_header /
+                     Raw(payload))
+            size = packet_sizes[i % len(packet_sizes)]
+            self.logger.debug("Packet size %d" % (size))
+            self.extend_packet(p, size)
+            # we need to store the packet with the automatic fields computed
+            # read back the dumped packet (with str())
+            # to force computing these fields
+            # probably other ways are possible
+            p = Ether(scapy.compat.raw(p))
+            payload_info.data = p.copy()
+            self.logger.debug(ppp("Created packet:", p))
+            pkts.append(p)
+        self.logger.info("Done creating packets")
+        return pkts
+
+    def send_and_verify_pkts(self, input, pkts, output, compare_func):
+        """Send packets and verify received packets using compare_func
+
+        :param input: ingress interface of DUT
+        :param pkts: list of packets to transmit
+        :param output: egress interface of DUT
+        :param compare_func: function to compare in and out packets
+        """
+        # add traffic stream to input interface
+        input.add_stream(pkts)
+
+        # enable capture on all interfaces
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # start traffic
+        self.logger.info("Starting traffic")
+        self.pg_start()
+
+        # get output capture
+        self.logger.info("Getting packet capture")
+        capture = output.get_capture()
+
+        # assert nothing was captured on input interface
+        # input.assert_nothing_captured()
+
+        # verify captured packets
+        self.verify_captured_pkts(output, capture, compare_func)
+
+    def create_packet_header_IPv6(self):
+        """Create packet header: IPv6 header, UDP header
+
+        :param dst: IPv6 destination address
+
+        IPv6 source address is 1234::1
+        IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst='4321::1') /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv6(self, sidlist, segleft):
+        """Create packet header: IPv6 encapsulated in SRv6:
+        IPv6 header with SRH, IPv6 header, UDP header
+
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 source address is set to 5678::1
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses is 1234::1
+        IPv6 destination address is 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='5678::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=41) /
+             IPv6(src='1234::1', dst='4321::1') /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv4(self):
+        """Create packet header: IPv4 header, UDP header
+
+        :param dst: IPv4 destination address
+
+        IPv4 source address is 123.1.1.1
+        IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IP(src='123.1.1.1', dst='124.1.1.1') /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv4(self, sidlist, segleft):
+        """Create packet header: IPv4 encapsulated in SRv6:
+        IPv6 header with SRH, IPv4 header, UDP header
+
+        :param ipv4address dst: inner IPv4 destination address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        IPv4 source address is 123.1.1.1
+        IPv4 destination address is 124.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=4) /
+             IP(src='123.1.1.1', dst='124.1.1.1') /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_L2(self, vlan=0):
+        """Create packet header: L2 header
+
+        :param vlan: if vlan!=0 then add 802.1q header
+        """
+        # Note: the dst addr ('00:55:44:33:22:11') is used in
+        # the compare function compare_rx_tx_packet_T_Encaps_L2
+        # to detect presence of L2 in SRH payload
+        p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            p /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            p.type = etype
+        return p
+
+    def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
+        """Create packet header: L2 encapsulated in SRv6:
+        IPv6 header with SRH, L2
+
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=143) /
+             eth)
+        return p
+
+    def get_payload_info(self, packet):
+        """ Extract the payload_info from the packet
+        """
+        # in most cases, payload_info is in packet[Raw]
+        # but packet[Raw] gives the complete payload
+        # (incl L2 header) for the T.Encaps L2 case
+        try:
+            payload_info = self.payload_to_info(packet[Raw])
+
+        except:
+            # remote L2 header from packet[Raw]:
+            # take packet[Raw], convert it to an Ether layer
+            # and then extract Raw from it
+            payload_info = self.payload_to_info(
+                Ether(scapy.compat.raw(packet[Raw]))[Raw])
+
+        return payload_info
+
+    def verify_captured_pkts(self, dst_if, capture, compare_func):
+        """
+        Verify captured packet stream for specified interface.
+        Compare ingress with egress packets using the specified compare fn
+
+        :param dst_if: egress interface of DUT
+        :param capture: captured packets
+        :param compare_func: function to compare in and out packet
+        """
+        self.logger.info("Verifying capture on interface %s using function %s"
+                         % (dst_if.name, compare_func.__name__))
+
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = dst_if.sw_if_index
+
+        for packet in capture:
+            try:
+                # extract payload_info from packet's payload
+                payload_info = self.get_payload_info(packet)
+                packet_index = payload_info.index
+
+                self.logger.debug("Verifying packet with index %d"
+                                  % (packet_index))
+                # packet should have arrived on the expected interface
+                self.assertEqual(payload_info.dst, dst_sw_if_index)
+                self.logger.debug(
+                    "Got packet on interface %s: src=%u (idx=%u)" %
+                    (dst_if.name, payload_info.src, packet_index))
+
+                # search for payload_info with same src and dst if_index
+                # this will give us the transmitted packet
+                next_info = self.get_next_packet_info_for_interface2(
+                    payload_info.src, dst_sw_if_index,
+                    last_info[payload_info.src])
+                last_info[payload_info.src] = next_info
+                # next_info should not be None
+                self.assertTrue(next_info is not None)
+                # index of tx and rx packets should be equal
+                self.assertEqual(packet_index, next_info.index)
+                # data field of next_info contains the tx packet
+                txed_packet = next_info.data
+
+                self.logger.debug(ppp("Transmitted packet:",
+                                      txed_packet))  # ppp=Pretty Print Packet
+
+                self.logger.debug(ppp("Received packet:", packet))
+
+                # compare rcvd packet with expected packet using compare_func
+                compare_func(txed_packet, packet)
+
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # have all expected packets arrived?
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(remaining_packet is None,
+                            "Interface %s: Packet expected from interface %s "
+                            "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_srv6_mobile.py b/test/test_srv6_mobile.py
new file mode 100644
index 0000000..a695c9d
--- /dev/null
+++ b/test/test_srv6_mobile.py
@@ -0,0 +1,340 @@
+#!/usr/bin/env python3
+
+from framework import VppTestCase
+from ipaddress import IPv4Address
+from ipaddress import IPv6Address
+from scapy.contrib.gtp import *
+from scapy.all import *
+
+
+class TestSRv6EndMGTP4E(VppTestCase):
+    """ SRv6 End.M.GTP4.E (SRv6 -> GTP-U) """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6EndMGTP4E, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip4()
+
+            cls.ip4_dst = cls.pg_if_o.remote_ip4
+            # cls.ip4_src = cls.pg_if_o.local_ip4
+            cls.ip4_src = "192.168.192.10"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_arp()
+
+        except Exception:
+            super(TestSRv6EndMGTP4E, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip4_dst = IPv4Address(str(self.ip4_dst))
+        # 32bit prefix + 32bit IPv4 DA + 8bit + 32bit TEID + 24bit
+        dst = b'\xaa' * 4 + ip4_dst.packed + \
+            b'\x11' + b'\xbb' * 4 + b'\x11' * 3
+        ip6_dst = IPv6Address(dst)
+
+        ip4_src = IPv4Address(str(self.ip4_src))
+        # 64bit prefix + 32bit IPv4 SA + 16 bit port + 16bit
+        src = b'\xcc' * 8 + ip4_src.packed + \
+            b'\xdd' * 2 + b'\x11' * 2
+        ip6_src = IPv6Address(src)
+
+        self.logger.info("ip4 dst: {}".format(ip4_dst))
+        self.logger.info("ip4 src: {}".format(ip4_src))
+        self.logger.info("ip6 dst (remote srgw): {}".format(ip6_dst))
+        self.logger.info("ip6 src (local  srgw): {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   IPv6ExtHdrSegmentRouting() /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_mobile(self):
+        """ test_srv6_mobile """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli(
+            "sr localsid address {} behavior end.m.gtp4.e v4src_position 64"
+            .format(pkts[0]['IPv6'].dst))
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(pkt[IP].dst, self.ip4_dst)
+            self.assertEqual(pkt[IP].src, self.ip4_src)
+            self.assertEqual(pkt[GTP_U_Header].teid, 0xbbbbbbbb)
+
+
+class TestSRv6TMGTP4D(VppTestCase):
+    """ SRv6 T.M.GTP4.D (GTP-U -> SRv6) """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6TMGTP4D, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip4()
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip4()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip4_dst = "1.1.1.1"
+            cls.ip4_src = "2.2.2.2"
+
+            cls.ip6_dst = cls.pg_if_o.remote_ip6
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_arp()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6TMGTP4D, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip4_dst = IPv4Address(str(self.ip4_dst))
+
+        ip4_src = IPv4Address(str(self.ip4_src))
+
+        self.logger.info("ip4 dst: {}".format(ip4_dst))
+        self.logger.info("ip4 src: {}".format(ip4_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IP(dst=str(ip4_dst), src=str(ip4_src)) /
+                   UDP(sport=2152, dport=2152) /
+                   GTP_U_Header(gtp_type="g_pdu", teid=200) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_mobile(self):
+        """ test_srv6_mobile """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
+        self.vapi.cli(
+            "sr policy add bsid D5:: behavior t.m.gtp4.d"
+            "D4::/32 v6src_prefix C1::/64 nhtype ipv6")
+        self.vapi.cli("sr steer l3 {}/32 via bsid D5::".format(self.ip4_dst))
+        self.vapi.cli("ip route add D2::/32 via {}".format(self.ip6_dst))
+
+        self.logger.info(self.vapi.cli("show sr steer"))
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.logger.info("GTP4.D Address={}".format(
+                str(pkt[IPv6ExtHdrSegmentRouting].addresses[0])))
+            self.assertEqual(
+                str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]),
+                "d4:0:101:101::c800:0")
+
+
+class TestSRv6EndMGTP6E(VppTestCase):
+    """ SRv6 End.M.GTP6.E """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6EndMGTP6E, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6EndMGTP6E, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+        # 64bit prefix + 8bit QFI + 32bit TEID + 24bit
+        dst = b'\xaa' * 8 + b'\x00' + \
+            b'\xbb' * 4 + b'\x00' * 3
+        ip6_dst = IPv6Address(dst)
+
+        self.ip6_dst = ip6_dst
+
+        src = b'\xcc' * 8 + \
+            b'\xdd' * 4 + b'\x11' * 4
+        ip6_src = IPv6Address(src)
+
+        self.ip6_src = ip6_src
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst),
+                        src=str(ip6_src)) /
+                   IPv6ExtHdrSegmentRouting(segleft=1,
+                                            lastentry=0,
+                                            tag=0,
+                                            addresses=["a1::1"]) /
+                   IPv6(dst=d, src=s) / UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_mobile(self):
+        """ test_srv6_mobile """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli(
+            "sr localsid prefix {}/64 behavior end.m.gtp6.e"
+            .format(pkts[0]['IPv6'].dst))
+        self.vapi.cli(
+            "ip route add a1::/64 via {}".format(self.ip6_nhop))
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(pkt[IPv6].dst, "a1::1")
+            self.assertEqual(pkt[IPv6].src, str(self.ip6_src))
+            self.assertEqual(pkt[GTP_U_Header].teid, 0xbbbbbbbb)
+
+
+class TestSRv6EndMGTP6D(VppTestCase):
+    """ SRv6 End.M.GTP6.D """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6EndMGTP6D, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            cls.ip6_dst = "2001::1"
+            cls.ip6_src = "2002::1"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6EndMGTP6D, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip6_dst = IPv6Address(str(self.ip6_dst))
+
+        ip6_src = IPv6Address(str(self.ip6_src))
+
+        self.logger.info("ip6 dst: {}".format(ip6_dst))
+        self.logger.info("ip6 src: {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   UDP(sport=2152, dport=2152) /
+                   GTP_U_Header(gtp_type="g_pdu", teid=200) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_mobile(self):
+        """ test_srv6_mobile """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
+        self.vapi.cli(
+            "sr localsid prefix 2001::/64 behavior end.m.gtp6.d D4::/64")
+        self.vapi.cli("ip route add D2::/64 via {}".format(self.ip6_nhop))
+
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.logger.info("GTP6.D Address={}".format(
+                str(pkt[IPv6ExtHdrSegmentRouting].addresses[0])))
+            self.assertEqual(
+                str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]), "d4::c800:0")
diff --git a/test/test_svs.py b/test/test_svs.py
new file mode 100644
index 0000000..db4ad80
--- /dev/null
+++ b/test/test_svs.py
@@ -0,0 +1,342 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpTable
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.layers.inet6 import IPv6
+
+from vpp_papi import VppEnum
+
+NUM_PKTS = 67
+
+
+class TestSVS(VppTestCase):
+    """ SVS Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSVS, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSVS, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestSVS, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(4))
+
+        table_id = 0
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+            if table_id != 0:
+                tbl = VppIpTable(self, table_id)
+                tbl.add_vpp_config()
+                tbl = VppIpTable(self, table_id, is_ip6=1)
+                tbl.add_vpp_config()
+
+            i.set_table_ip4(table_id)
+            i.set_table_ip6(table_id)
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+            table_id += 1
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+            i.admin_down()
+        super(TestSVS, self).tearDown()
+
+    def test_svs4(self):
+        """ Source VRF Select IP4 """
+
+        #
+        # packets destined out of the 3 non-default table interfaces
+        #
+        pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))]
+        pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))]
+
+        #
+        # before adding the SVS config all these packets are dropped when
+        # ingressing on pg0 since pg0 is in the default table
+        #
+        for p in pkts_0:
+            self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # Add table 1001 & 1002 into which we'll add the routes
+        # determining the source VRF selection
+        #
+        table_ids = [101, 102]
+
+        for table_id in table_ids:
+            self.vapi.svs_table_add_del(
+                is_add=1,
+                af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+                table_id=table_id)
+
+            #
+            # map X.0.0.0/8 to each SVS table for lookup in table X
+            #
+            for i in range(1, 4):
+                self.vapi.svs_route_add_del(
+                    is_add=1,
+                    prefix="%d.0.0.0/8" % i,
+                    table_id=table_id,
+                    source_table_id=i)
+
+        #
+        # Enable SVS on pg0/pg1 using table 1001/1002
+        #
+        self.vapi.svs_enable_disable(
+            is_enable=1,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+            table_id=table_ids[0],
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.svs_enable_disable(
+            is_enable=1,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+            table_id=table_ids[1],
+            sw_if_index=self.pg1.sw_if_index)
+
+        #
+        # now all the packets should be delivered out the respective interface
+        #
+        self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
+        self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
+        self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
+        self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
+        self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
+        self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
+
+        #
+        # check that if the SVS lookup does not match a route the packet
+        # is forwarded using the interface's routing table
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
+
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
+
+        #
+        # dump the SVS configs
+        #
+        ss = self.vapi.svs_dump()
+
+        self.assertEqual(ss[0].table_id, table_ids[0])
+        self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
+        self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
+        self.assertEqual(ss[1].table_id, table_ids[1])
+        self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
+        self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
+
+        #
+        # cleanup
+        #
+        self.vapi.svs_enable_disable(
+            is_enable=0,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+            table_id=table_ids[0],
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.svs_enable_disable(
+            is_enable=0,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+            table_id=table_ids[1],
+            sw_if_index=self.pg1.sw_if_index)
+
+        for table_id in table_ids:
+            for i in range(1, 4):
+                self.vapi.svs_route_add_del(
+                    is_add=0,
+                    prefix="%d.0.0.0/8" % i,
+                    table_id=table_id,
+                    source_table_id=0)
+
+            self.vapi.svs_table_add_del(
+                is_add=0,
+                af=VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+                table_id=table_id)
+
+    def test_svs6(self):
+        """ Source VRF Select IP6 """
+
+        #
+        # packets destined out of the 3 non-default table interfaces
+        #
+        pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+                   IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))]
+        pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100)),
+                  (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+                   IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))]
+
+        #
+        # before adding the SVS config all these packets are dropped when
+        # ingressing on pg0 since pg0 is in the default table
+        #
+        for p in pkts_0:
+            self.send_and_assert_no_replies(self.pg0, p * 1)
+
+        #
+        # Add table 1001 & 1002 into which we'll add the routes
+        # determining the source VRF selection
+        #
+        table_ids = [101, 102]
+
+        for table_id in table_ids:
+            self.vapi.svs_table_add_del(
+                is_add=1,
+                af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+                table_id=table_id)
+
+            #
+            # map X.0.0.0/8 to each SVS table for lookup in table X
+            #
+            for i in range(1, 4):
+                self.vapi.svs_route_add_del(
+                    is_add=1,
+                    prefix="2001:%d::/32" % i,
+                    table_id=table_id,
+                    source_table_id=i)
+
+        #
+        # Enable SVS on pg0/pg1 using table 1001/1002
+        #
+        self.vapi.svs_enable_disable(
+            is_enable=1,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+            table_id=table_ids[0],
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.svs_enable_disable(
+            is_enable=1,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+            table_id=table_ids[1],
+            sw_if_index=self.pg1.sw_if_index)
+
+        #
+        # now all the packets should be delivered out the respective interface
+        #
+        self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
+        self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
+        self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
+        self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
+        self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
+        self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
+
+        #
+        # check that if the SVS lookup does not match a route the packet
+        # is forwarded using the interface's routing table
+        #
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
+
+        p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+             IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
+             UDP(sport=1234, dport=1234) /
+             Raw(b'\xa5' * 100))
+        self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
+
+        #
+        # dump the SVS configs
+        #
+        ss = self.vapi.svs_dump()
+
+        self.assertEqual(ss[0].table_id, table_ids[0])
+        self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
+        self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
+        self.assertEqual(ss[1].table_id, table_ids[1])
+        self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
+        self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
+
+        #
+        # cleanup
+        #
+        self.vapi.svs_enable_disable(
+            is_enable=0,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+            table_id=table_ids[0],
+            sw_if_index=self.pg0.sw_if_index)
+        self.vapi.svs_enable_disable(
+            is_enable=0,
+            af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+            table_id=table_ids[1],
+            sw_if_index=self.pg1.sw_if_index)
+
+        for table_id in table_ids:
+            for i in range(1, 4):
+                self.vapi.svs_route_add_del(
+                    is_add=0,
+                    prefix="2001:%d::/32" % i,
+                    table_id=table_id,
+                    source_table_id=0)
+
+            self.vapi.svs_table_add_del(
+                is_add=0,
+                af=VppEnum.vl_api_address_family_t.ADDRESS_IP6,
+                table_id=table_id)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_urpf.py b/test/test_urpf.py
new file mode 100644
index 0000000..8f4e563
--- /dev/null
+++ b/test/test_urpf.py
@@ -0,0 +1,305 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.layers.inet6 import IPv6
+
+from vpp_papi import VppEnum
+
+N_PKTS = 63
+
+
+class TestURPF(VppTestCase):
+    """ Unicast Reverse Path Forwarding Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestURPF, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestURPF, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestURPF, self).setUp()
+
+        # create 4 pg interfaces so there are a few addresses
+        # in the FIB
+        self.create_pg_interfaces(range(4))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestURPF, self).tearDown()
+
+    def test_urpf4(self):
+        """ uRPF IP4 """
+
+        e = VppEnum
+        p_spoof_loose = (Ether(dst=self.pg0.local_mac,
+                               src=self.pg0.remote_mac) /
+                         IP(src="3.3.3.3", dst=self.pg1.remote_ip4) /
+                         UDP(sport=1234, dport=1234) /
+                         Raw(b'\xa5' * 100)) * N_PKTS
+        p_spoof_strict = (Ether(dst=self.pg0.local_mac,
+                                src=self.pg0.remote_mac) /
+                          IP(src=self.pg2.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(sport=1234, dport=1234) /
+                          Raw(b'\xa5' * 100)) * N_PKTS
+        p_good = (Ether(dst=self.pg0.local_mac,
+                        src=self.pg0.remote_mac) /
+                  IP(src=self.pg0.remote_ip4,
+                     dst=self.pg1.remote_ip4) /
+                  UDP(sport=1234, dport=1234) /
+                  Raw(b'\xa5' * 100)) * N_PKTS
+
+        #
+        # before adding the uRPF, ensure all packets are forwarded
+        #
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_loose, self.pg1)
+
+        #
+        # apply loose uRPF check on pg0 rx
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_LOOSE,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        # good packets still pass
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # packets from address for which there is a route are forwarded
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        # packets from address to which there is no route are dropped
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip4-rx-urpf-loose/uRPF Drop",
+                                        N_PKTS)
+
+        #
+        # crank it up to strict mode
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_STRICT,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        # good packets still pass
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # packets that would not be routed back thru pg0 are dropped
+        self.send_and_assert_no_replies(self.pg0, p_spoof_strict)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip4-rx-urpf-strict/uRPF Drop",
+                                        2 * N_PKTS)
+
+        #
+        # disable uRPF, all traffic should pass
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_OFF,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_loose, self.pg1)
+
+        #
+        # Now apply in the TX direction
+        #  for loose it is the same deal, they should not be forwarded
+        #  if there's no route
+        #  for strict they should not be forwarded if they would be
+        #  forwarded thru that interface.
+        #
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_LOOSE,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg1.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip4-tx-urpf-loose/uRPF Drop",
+                                        N_PKTS)
+
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_STRICT,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg1.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # the strict packet, from a peer is allowed, since it does
+        # not forward via pg1
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip4-tx-urpf-strict/uRPF Drop",
+                                        N_PKTS)
+
+        # change the strict packet so that it would forward through pg1
+        p_spoof_strict = (Ether(dst=self.pg0.local_mac,
+                                src=self.pg0.remote_mac) /
+                          IP(src=self.pg1.remote_ip4,
+                             dst=self.pg1.remote_ip4) /
+                          UDP(sport=1234, dport=1234) /
+                          Raw(b'\xa5' * 100)) * N_PKTS
+
+        self.send_and_assert_no_replies(self.pg0, p_spoof_strict)
+        self.assert_error_counter_equal("/err/ip4-tx-urpf-strict/uRPF Drop",
+                                        2 * N_PKTS)
+
+        # cleanup
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_OFF,
+                              af=e.vl_api_address_family_t.ADDRESS_IP4,
+                              sw_if_index=self.pg1.sw_if_index)
+
+    def test_urpf6(self):
+        """ uRPF IP6 """
+
+        e = VppEnum
+        p_spoof_loose = (Ether(dst=self.pg0.local_mac,
+                               src=self.pg0.remote_mac) /
+                         IPv6(src="3::3", dst=self.pg1.remote_ip6) /
+                         UDP(sport=1236, dport=1236) /
+                         Raw(b'\xa5' * 100)) * N_PKTS
+        p_spoof_strict = (Ether(dst=self.pg0.local_mac,
+                                src=self.pg0.remote_mac) /
+                          IPv6(src=self.pg2.remote_ip6,
+                               dst=self.pg1.remote_ip6) /
+                          UDP(sport=1236, dport=1236) /
+                          Raw(b'\xa5' * 100)) * N_PKTS
+        p_good = (Ether(dst=self.pg0.local_mac,
+                        src=self.pg0.remote_mac) /
+                  IPv6(src=self.pg0.remote_ip6,
+                       dst=self.pg1.remote_ip6) /
+                  UDP(sport=1236, dport=1236) /
+                  Raw(b'\xa5' * 100)) * N_PKTS
+
+        #
+        # before adding the uRPF, ensure all packets are forwarded
+        #
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_loose, self.pg1)
+
+        #
+        # apply loose uRPF check on pg0 rx
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_LOOSE,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        # good packets still pass
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # packets from address for which there is a route are forwarded
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        # packets from address to which there is no route are dropped
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip6-rx-urpf-loose/uRPF Drop",
+                                        N_PKTS)
+
+        #
+        # crank it up to strict mode
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_STRICT,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        # good packets still pass
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # packets that would not be routed back thru pg0 are dropped
+        self.send_and_assert_no_replies(self.pg0, p_spoof_strict)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip6-rx-urpf-strict/uRPF Drop",
+                                        2 * N_PKTS)
+
+        #
+        # disable uRPF, all traffic should pass
+        #
+        self.vapi.urpf_update(is_input=True,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_OFF,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg0.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_loose, self.pg1)
+
+        #
+        # Now apply in the TX direction
+        #  for loose it is the same deal, they should not be forwarded
+        #  if there's no route
+        #  for strict they should not be forwarded if they would be
+        #  forwarded thru that interface.
+        #
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_LOOSE,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg1.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip6-tx-urpf-loose/uRPF Drop",
+                                        N_PKTS)
+
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_STRICT,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg1.sw_if_index)
+
+        self.send_and_expect(self.pg0, p_good, self.pg1)
+        # the strict packet, from a peer is allowed, since it does
+        # not forward via pg1
+        self.send_and_expect(self.pg0, p_spoof_strict, self.pg1)
+        self.send_and_assert_no_replies(self.pg0, p_spoof_loose)
+
+        self.assert_error_counter_equal("/err/ip6-tx-urpf-strict/uRPF Drop",
+                                        N_PKTS)
+
+        # change the strict packet so that it would forward through pg1
+        p_spoof_strict = (Ether(dst=self.pg0.local_mac,
+                                src=self.pg0.remote_mac) /
+                          IPv6(src=self.pg1.remote_ip6,
+                               dst=self.pg1.remote_ip6) /
+                          UDP(sport=1236, dport=1236) /
+                          Raw(b'\xa5' * 100)) * N_PKTS
+
+        self.send_and_assert_no_replies(self.pg0, p_spoof_strict)
+        self.assert_error_counter_equal("/err/ip6-tx-urpf-strict/uRPF Drop",
+                                        2 * N_PKTS)
+
+        # cleanup
+        self.vapi.urpf_update(is_input=False,
+                              mode=e.vl_api_urpf_mode_t.URPF_API_MODE_OFF,
+                              af=e.vl_api_address_family_t.ADDRESS_IP6,
+                              sw_if_index=self.pg1.sw_if_index)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vapi.py b/test/test_vapi.py
new file mode 100644
index 0000000..d910992
--- /dev/null
+++ b/test/test_vapi.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+""" VAPI test """
+
+import unittest
+import os
+import signal
+from framework import VppTestCase, VppTestRunner, Worker
+
+
+class VAPITestCase(VppTestCase):
+    """ VAPI test """
+
+    @classmethod
+    def setUpClass(cls):
+        super(VAPITestCase, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(VAPITestCase, cls).tearDownClass()
+
+    def test_vapi_c(self):
+        """ run C VAPI tests """
+        var = "TEST_BR"
+        built_root = os.getenv(var, None)
+        self.assertIsNotNone(built_root,
+                             "Environment variable `%s' not set" % var)
+        executable = "%s/vapi_test/vapi_c_test" % built_root
+        worker = Worker([executable, "vapi client",
+                         self.get_api_segment_prefix()], self.logger)
+        worker.start()
+        timeout = 60
+        worker.join(timeout)
+        self.logger.info("Worker result is `%s'" % worker.result)
+        error = False
+        if worker.result is None:
+            try:
+                error = True
+                self.logger.error(
+                    "Timeout! Worker did not finish in %ss" % timeout)
+                os.killpg(os.getpgid(worker.process.pid), signal.SIGTERM)
+                worker.join()
+            except:
+                self.logger.debug("Couldn't kill worker-spawned process")
+                raise
+        if error:
+            raise Exception(
+                "Timeout! Worker did not finish in %ss" % timeout)
+        self.assert_equal(worker.result, 0, "Binary test return code")
+
+    def test_vapi_cpp(self):
+        """ run C++ VAPI tests """
+        var = "TEST_BR"
+        built_root = os.getenv(var, None)
+        self.assertIsNotNone(built_root,
+                             "Environment variable `%s' not set" % var)
+        executable = "%s/vapi_test/vapi_cpp_test" % built_root
+        worker = Worker([executable, "vapi client",
+                         self.get_api_segment_prefix()], self.logger)
+        worker.start()
+        timeout = 120
+        worker.join(timeout)
+        self.logger.info("Worker result is `%s'" % worker.result)
+        error = False
+        if worker.result is None:
+            try:
+                error = True
+                self.logger.error(
+                    "Timeout! Worker did not finish in %ss" % timeout)
+                os.killpg(os.getpgid(worker.process.pid), signal.SIGTERM)
+                worker.join()
+            except:
+                raise Exception("Couldn't kill worker-spawned process")
+        if error:
+            raise Exception(
+                "Timeout! Worker did not finish in %ss" % timeout)
+        self.assert_equal(worker.result, 0, "Binary test return code")
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vpe_api.py b/test/test_vpe_api.py
new file mode 100644
index 0000000..54f7e41
--- /dev/null
+++ b/test/test_vpe_api.py
@@ -0,0 +1,55 @@
+#  Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+import datetime
+import time
+import unittest
+from framework import VppTestCase
+
+enable_print = False
+
+
+class TestVpeApi(VppTestCase):
+    """TestVpeApi"""
+
+    def test_log_dump_default(self):
+        rv = self.vapi.cli('test log notice fib entry this is a test')
+        rv = self.vapi.log_dump()
+        if enable_print:
+            print('\n'.join([str(v) for v in rv]))
+        self.assertTrue(rv)
+
+    def test_log_dump_timestamp_0(self):
+        rv = self.vapi.cli('test log notice fib entry this is a test')
+        rv = self.vapi.log_dump(start_timestamp=0.0)
+        if enable_print:
+            print('\n'.join([str(v) for v in rv]))
+        self.assertTrue(rv)
+
+    def test_log_dump_timestamp_future(self):
+        rv = self.vapi.cli('test log debug fib entry test')
+        rv = self.vapi.log_dump(start_timestamp=time.time() + 60.0)
+        if enable_print:
+            print('\n'.join([str(v) for v in rv]))
+        self.assertFalse(rv)
+
+    def test_show_vpe_system_time(self):
+        local_start_time = datetime.datetime.now()
+        rv = self.vapi.show_vpe_system_time()
+        self.assertTrue(rv.vpe_system_time > local_start_time -
+                        datetime.timedelta(hours=1.0),
+                        'system times differ by more than an hour.')
+        if enable_print:
+            print('\n'.join([str(v) for v in rv]))
+            print('%r %s' % (rv.vpe_system_time,
+                             rv.vpe_system_time))
diff --git a/test/test_vppinfra.py b/test/test_vppinfra.py
new file mode 100644
index 0000000..8b6ec96
--- /dev/null
+++ b/test/test_vppinfra.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import running_gcov_tests
+
+
+class TestVppinfra(VppTestCase):
+    """ Vppinfra Unit Test Cases """
+    vpp_worker_count = 1
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestVppinfra, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVppinfra, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestVppinfra, self).setUp()
+
+    def tearDown(self):
+        super(TestVppinfra, self).tearDown()
+
+    def test_bitmap_unittest(self):
+        """ Bitmap Code Coverage Test """
+        cmds = ["test bitmap"]
+
+        for cmd in cmds:
+            r = self.vapi.cli_return_response(cmd)
+            if r.retval != 0:
+                if hasattr(r, 'reply'):
+                    self.logger.info(cmd + " FAIL reply " + r.reply)
+                else:
+                    self.logger.info(cmd + " FAIL retval " + str(r.retval))
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vrrp.py b/test/test_vrrp.py
new file mode 100644
index 0000000..cc70613
--- /dev/null
+++ b/test/test_vrrp.py
@@ -0,0 +1,1293 @@
+#!/usr/bin/env python3
+
+#
+# Copyright 2019-2020 Rubicon Communications, LLC (Netgate)
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+import unittest
+import time
+import socket
+from socket import inet_pton, inet_ntop
+
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+
+from scapy.packet import raw
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, ICMP, icmptypes
+from scapy.layers.inet6 import IPv6, ipv6nh, IPv6ExtHdrHopByHop, \
+    ICMPv6MLReport2, ICMPv6ND_NA, ICMPv6ND_NS, ICMPv6NDOptDstLLAddr, \
+    ICMPv6NDOptSrcLLAddr, ICMPv6EchoRequest, ICMPv6EchoReply
+from scapy.contrib.igmpv3 import IGMPv3, IGMPv3mr, IGMPv3gr
+from scapy.layers.vrrp import IPPROTO_VRRP, VRRPv3
+from scapy.utils6 import in6_getnsma, in6_getnsmac
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from util import ip6_normalize
+
+VRRP_VR_FLAG_PREEMPT = 1
+VRRP_VR_FLAG_ACCEPT = 2
+VRRP_VR_FLAG_UNICAST = 4
+VRRP_VR_FLAG_IPV6 = 8
+
+VRRP_VR_STATE_INIT = 0
+VRRP_VR_STATE_BACKUP = 1
+VRRP_VR_STATE_MASTER = 2
+VRRP_VR_STATE_INTF_DOWN = 3
+
+
+def is_non_arp(p):
+    """ Want to filter out advertisements, igmp, etc"""
+    if p.haslayer(ARP):
+        return False
+
+    return True
+
+
+def is_not_adv(p):
+    """ Filter out everything but advertisements. E.g. multicast RD/ND """
+    if p.haslayer(VRRPv3):
+        return False
+
+    return True
+
+
+def is_not_echo_reply(p):
+    """ filter out advertisements and other while waiting for echo reply """
+    if p.haslayer(IP) and p.haslayer(ICMP):
+        if icmptypes[p[ICMP].type] == "echo-reply":
+            return False
+    elif p.haslayer(IPv6) and p.haslayer(ICMPv6EchoReply):
+        return False
+
+    return True
+
+
+class VppVRRPVirtualRouter(VppObject):
+
+    def __init__(self,
+                 test,
+                 intf,
+                 vr_id,
+                 prio=100,
+                 intvl=100,
+                 flags=VRRP_VR_FLAG_PREEMPT,
+                 vips=None):
+        self._test = test
+        self._intf = intf
+        self._sw_if_index = self._intf.sw_if_index
+        self._vr_id = vr_id
+        self._prio = prio
+        self._intvl = intvl
+        self._flags = flags
+        if (flags & VRRP_VR_FLAG_IPV6):
+            self._is_ipv6 = 1
+            self._adv_dest_mac = "33:33:00:00:00:12"
+            self._virtual_mac = "00:00:5e:00:02:%02x" % vr_id
+            self._adv_dest_ip = "ff02::12"
+            self._vips = ([intf.local_ip6] if vips is None else vips)
+        else:
+            self._is_ipv6 = 0
+            self._adv_dest_mac = "01:00:5e:00:00:12"
+            self._virtual_mac = "00:00:5e:00:01:%02x" % vr_id
+            self._adv_dest_ip = "224.0.0.18"
+            self._vips = ([intf.local_ip4] if vips is None else vips)
+        self._tracked_ifs = []
+
+    def add_vpp_config(self):
+        self._test.vapi.vrrp_vr_add_del(is_add=1,
+                                        sw_if_index=self._intf.sw_if_index,
+                                        vr_id=self._vr_id,
+                                        priority=self._prio,
+                                        interval=self._intvl,
+                                        flags=self._flags,
+                                        n_addrs=len(self._vips),
+                                        addrs=self._vips)
+
+    def query_vpp_config(self):
+        vrs = self._test.vapi.vrrp_vr_dump(sw_if_index=self._intf.sw_if_index)
+        for vr in vrs:
+            if vr.config.vr_id != self._vr_id:
+                continue
+
+            is_ipv6 = (1 if (vr.config.flags & VRRP_VR_FLAG_IPV6) else 0)
+            if is_ipv6 != self._is_ipv6:
+                continue
+
+            return vr
+
+        return None
+
+    def remove_vpp_config(self):
+        self._test.vapi.vrrp_vr_add_del(is_add=0,
+                                        sw_if_index=self._intf.sw_if_index,
+                                        vr_id=self._vr_id,
+                                        priority=self._prio,
+                                        interval=self._intvl,
+                                        flags=self._flags,
+                                        n_addrs=len(self._vips),
+                                        addrs=self._vips)
+
+    def start_stop(self, is_start):
+        self._test.vapi.vrrp_vr_start_stop(is_start=is_start,
+                                           sw_if_index=self._intf.sw_if_index,
+                                           vr_id=self._vr_id,
+                                           is_ipv6=self._is_ipv6)
+        self._start_time = (time.time() if is_start else None)
+
+    def add_del_tracked_interface(self, is_add, sw_if_index, prio):
+        args = {
+            'sw_if_index': self._intf.sw_if_index,
+            'is_ipv6': self._is_ipv6,
+            'vr_id': self._vr_id,
+            'is_add': is_add,
+            'n_ifs': 1,
+            'ifs': [{'sw_if_index': sw_if_index, 'priority': prio}]
+        }
+        self._test.vapi.vrrp_vr_track_if_add_del(**args)
+        self._tracked_ifs.append(args['ifs'][0])
+
+    def set_unicast_peers(self, addrs):
+        args = {
+            'sw_if_index': self._intf.sw_if_index,
+            'is_ipv6': self._is_ipv6,
+            'vr_id': self._vr_id,
+            'n_addrs': len(addrs),
+            'addrs': addrs
+        }
+        self._test.vapi.vrrp_vr_set_peers(**args)
+        self._unicast_peers = addrs
+
+    def start_time(self):
+        return self._start_time
+
+    def virtual_mac(self):
+        return self._virtual_mac
+
+    def virtual_ips(self):
+        return self._vips
+
+    def adv_dest_mac(self):
+        return self._adv_dest_mac
+
+    def adv_dest_ip(self):
+        return self._adv_dest_ip
+
+    def priority(self):
+        return self._prio
+
+    def vr_id(self):
+        return self._vr_id
+
+    def adv_interval(self):
+        return self._intvl
+
+    def interface(self):
+        return self._intf
+
+    def assert_state_equals(self, state):
+        vr_details = self.query_vpp_config()
+        self._test.assertEqual(vr_details.runtime.state, state)
+
+    def master_down_seconds(self):
+        vr_details = self.query_vpp_config()
+        return (vr_details.runtime.master_down_int * 0.01)
+
+
+class VrrpCommonMixin:
+    def vrrp_adv_packet(self, prio=None, src_ip=None):
+        dst_ip = self._adv_dest_ip
+        if prio is None:
+            prio = self._prio
+        eth = Ether(dst=self._adv_dest_mac, src=self._virtual_mac)
+        vrrp = VRRPv3(vrid=self._vr_id, priority=prio,
+                      ipcount=len(self._vips), adv=self._intvl)
+        if self._is_ipv6:
+            src_ip = (self._intf.local_ip6_ll if src_ip is None else src_ip)
+            ip = IPv6(src=src_ip, dst=dst_ip, nh=IPPROTO_VRRP, hlim=255)
+            vrrp.addrlist = self._vips
+        else:
+            src_ip = (self._intf.local_ip4 if src_ip is None else src_ip)
+            ip = IP(src=src_ip, dst=dst_ip, proto=IPPROTO_VRRP, ttl=255, id=0)
+            vrrp.addrlist = self._vips
+
+        # Fill in default values & checksums
+        pkt = Ether(raw(eth / ip / vrrp))
+        return pkt
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class TestVRRP4(VrrpCommonMixin, VppTestCase):
+    """ IPv4 VRRP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestVRRP4, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVRRP4, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestVRRP4, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.generate_remote_hosts(5)
+            i.configure_ipv4_neighbors()
+
+        self._vrs = []
+        self._default_flags = VRRP_VR_FLAG_PREEMPT
+        self._default_adv = 100
+
+    def tearDown(self):
+        for vr in self._vrs:
+            try:
+                vr_api = vr.query_vpp_config()
+                if vr_api.runtime.state != VRRP_VR_STATE_INIT:
+                    vr.start_stop(is_start=0)
+                vr.remove_vpp_config()
+            except:
+                self.logger.error("Error cleaning up")
+
+        for i in self.pg_interfaces:
+            i.admin_down()
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+
+        self._vrs = []
+
+        super(TestVRRP4, self).tearDown()
+
+    def verify_vrrp4_igmp(self, pkt):
+        ip = pkt[IP]
+        self.assertEqual(ip.dst, "224.0.0.22")
+        self.assertEqual(ip.proto, 2)
+
+        igmp = pkt[IGMPv3]
+        self.assertEqual(IGMPv3.igmpv3types[igmp.type],
+                         "Version 3 Membership Report")
+
+        igmpmr = pkt[IGMPv3mr]
+        self.assertEqual(igmpmr.numgrp, 1)
+        self.assertEqual(igmpmr.records[0].maddr, "224.0.0.18")
+
+    def verify_vrrp4_garp(self, pkt, vip, vmac):
+        arp = pkt[ARP]
+
+        # ARP "who-has" op == 1
+        self.assertEqual(arp.op, 1)
+        self.assertEqual(arp.pdst, arp.psrc)
+        self.assertEqual(arp.pdst, vip)
+        self.assertEqual(arp.hwsrc, vmac)
+
+    def verify_vrrp4_adv(self, rx_pkt, vr, prio=None):
+        vips = vr.virtual_ips()
+        eth = rx_pkt[Ether]
+        ip = rx_pkt[IP]
+        vrrp = rx_pkt[VRRPv3]
+
+        pkt = self.vrrp_adv_packet(prio=prio)
+
+        # Source MAC is virtual MAC, destination is multicast MAC
+        self.assertEqual(eth.src, vr.virtual_mac())
+        self.assertEqual(eth.dst, vr.adv_dest_mac())
+
+        self.assertEqual(ip.dst, "224.0.0.18")
+        self.assertEqual(ip.ttl, 255)
+        self.assertEqual(ip.proto, IPPROTO_VRRP)
+
+        self.assertEqual(vrrp.version, 3)
+        self.assertEqual(vrrp.type, 1)
+        self.assertEqual(vrrp.vrid, vr.vr_id())
+        if prio is None:
+            prio = vr.priority()
+        self.assertEqual(vrrp.priority, prio)
+        self.assertEqual(vrrp.ipcount, len(vips))
+        self.assertEqual(vrrp.adv, vr.adv_interval())
+        self.assertListEqual(vrrp.addrlist, vips)
+
+    # VR with priority 255 owns the virtual address and should
+    # become master and start advertising immediately.
+    def test_vrrp4_master_adv(self):
+        """ IPv4 Master VR advertises """
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        prio = 255
+        intvl = self._default_adv
+        vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags)
+
+        vr.add_vpp_config()
+        vr.start_stop(is_start=1)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+        vr.start_stop(is_start=0)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+
+        pkts = self.pg0.get_capture(4)
+
+        # Init -> Master: IGMP Join, VRRP adv, gratuitous ARP are sent
+        self.verify_vrrp4_igmp(pkts[0])
+        self.verify_vrrp4_adv(pkts[1], vr, prio=prio)
+        self.verify_vrrp4_garp(pkts[2], vr.virtual_ips()[0], vr.virtual_mac())
+        # Master -> Init: Adv with priority 0 sent to force an election
+        self.verify_vrrp4_adv(pkts[3], vr, prio=0)
+
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    # VR with priority < 255 enters backup state and does not advertise as
+    # long as it receives higher priority advertisements
+    def test_vrrp4_backup_noadv(self):
+        """ IPv4 Backup VR does not advertise """
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[self.pg0.remote_ip4])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        vr.start_stop(is_start=1)
+
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        # watch for advertisements for 2x the master down preemption timeout
+        end_time = vr.start_time() + 2 * vr.master_down_seconds()
+
+        # Init -> Backup: An IGMP join should be sent
+        pkts = self.pg0.get_capture(1)
+        self.verify_vrrp4_igmp(pkts[0])
+
+        # send higher prio advertisements, should not receive any
+        src_ip = self.pg0.remote_ip4
+        pkts = [self.vrrp_adv_packet(prio=prio+10, src_ip=src_ip)]
+        while time.time() < end_time:
+            self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+            self.logger.info(self.vapi.cli("show trace"))
+
+        vr.start_stop(is_start=0)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    def test_vrrp4_master_arp(self):
+        """ IPv4 Master VR replies to ARP """
+        self.pg_start()
+
+        # VR virtual IP is the default, which is the pg local IP
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags)
+        self._vrs.append(vr)
+
+        vr.add_vpp_config()
+
+        # before the VR is up, ARP should resolve to interface MAC
+        self.pg0.resolve_arp()
+        self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        # start the VR, ARP should now resolve to virtual MAC
+        vr.start_stop(is_start=1)
+        self.pg0.resolve_arp()
+        self.assertEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        # stop the VR, ARP should resolve to interface MAC again
+        vr.start_stop(is_start=0)
+        self.pg0.resolve_arp()
+        self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    def test_vrrp4_backup_noarp(self):
+        """ IPv4 Backup VR ignores ARP """
+        # We need an address for a virtual IP that is not the IP that
+        # ARP requests will originate from
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_hosts[1].ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        arp_req = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
+                   ARP(op=ARP.who_has, pdst=vip,
+                   psrc=self.pg0.remote_ip4, hwsrc=self.pg0.remote_mac))
+
+        # Before the VR is started make sure no reply to request for VIP
+        self.pg_start()
+        self.pg_enable_capture(self.pg_interfaces)
+        self.send_and_assert_no_replies(self.pg0, [arp_req], timeout=1)
+
+        # VR should start in backup state and still should not reply to ARP
+        # send a higher priority adv to make sure it does not become master
+        adv = self.vrrp_adv_packet(prio=prio+10, src_ip=self.pg0.remote_ip4)
+        vr.start_stop(is_start=1)
+        self.send_and_assert_no_replies(self.pg0, [adv, arp_req], timeout=1)
+
+        vr.start_stop(is_start=0)
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    def test_vrrp4_election(self):
+        """ IPv4 Backup VR becomes master if no advertisements received """
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.remote_ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        self.pg_start()
+        vr.start_stop(is_start=1)
+
+        # VR should be in backup state after starting
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        end_time = vr.start_time() + vr.master_down_seconds()
+
+        # should not receive adverts until timer expires & state transition
+        self.pg_enable_capture(self.pg_interfaces)
+        while (time.time() + intvl_s) < end_time:
+            time.sleep(intvl_s)
+            self.pg0.assert_nothing_captured(filter_out_fn=is_not_adv)
+
+        # VR should be in master state, should send an adv
+        self.pg0.enable_capture()
+        self.pg0.wait_for_packet(intvl_s, is_not_adv)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+    def test_vrrp4_backup_preempts(self):
+        """ IPv4 Backup VR preempts lower priority master """
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.remote_ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        self.pg_start()
+        vr.start_stop(is_start=1)
+
+        # VR should be in backup state after starting
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        end_time = vr.start_time() + vr.master_down_seconds()
+
+        # send lower prio advertisements until timer expires
+        src_ip = self.pg0.remote_ip4
+        pkts = [self.vrrp_adv_packet(prio=prio-10, src_ip=src_ip)]
+        while time.time() + intvl_s < end_time:
+            self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+            self.logger.info(self.vapi.cli("show trace"))
+
+        # when timer expires, VR should take over as master
+        self.pg0.enable_capture()
+        self.pg0.wait_for_packet(timeout=intvl_s, filter_out_fn=is_not_adv)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+    def test_vrrp4_master_preempted(self):
+        """ IPv4 Master VR preempted by higher priority backup """
+
+        # A prio 255 VR cannot be preempted so the prio has to be lower and
+        # we have to wait for it to take over
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # Build advertisement packet and send it
+        pkts = [self.vrrp_adv_packet(prio=255, src_ip=self.pg0.remote_ip4)]
+        self.pg_send(self.pg0, pkts)
+
+        # VR should be in backup state again
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+    def test_vrrp4_accept_mode_disabled(self):
+        """ IPv4 Master VR does not reply for VIP w/ accept mode off """
+
+        # accept mode only matters when prio < 255, so it will have to
+        # come up as a backup and take over as master after the timeout
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_hosts[4].ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # send an ICMP echo to the VR virtual IP address
+        echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+                IP(dst=vip, src=self.pg0.remote_ip4) /
+                ICMP(seq=1, id=self.pg0.sw_if_index, type='echo-request'))
+        self.pg_send(self.pg0, [echo])
+
+        # wait for an echo reply. none should be received
+        time.sleep(1)
+        self.pg0.assert_nothing_captured(filter_out_fn=is_not_echo_reply)
+
+    def test_vrrp4_accept_mode_enabled(self):
+        """ IPv4 Master VR replies for VIP w/ accept mode on """
+
+        # A prio 255 VR cannot be preempted so the prio has to be lower and
+        # we have to wait for it to take over
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_hosts[4].ip4
+        flags = (VRRP_VR_FLAG_PREEMPT | VRRP_VR_FLAG_ACCEPT)
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # send an ICMP echo to the VR virtual IP address
+        echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+                IP(dst=vip, src=self.pg0.remote_ip4) /
+                ICMP(seq=1, id=self.pg0.sw_if_index, type='echo-request'))
+        self.pg_send(self.pg0, [echo])
+
+        # wait for an echo reply.
+        time.sleep(1)
+        rx_pkts = self.pg0.get_capture(expected_count=1, timeout=1,
+                                       filter_out_fn=is_not_echo_reply)
+
+        self.assertEqual(rx_pkts[0][IP].src, vip)
+        self.assertEqual(rx_pkts[0][IP].dst, self.pg0.remote_ip4)
+        self.assertEqual(icmptypes[rx_pkts[0][ICMP].type], "echo-reply")
+        self.assertEqual(rx_pkts[0][ICMP].seq, 1)
+        self.assertEqual(rx_pkts[0][ICMP].id, self.pg0.sw_if_index)
+
+    def test_vrrp4_intf_tracking(self):
+        """ IPv4 Master VR adjusts priority based on tracked interface """
+
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.local_ip4
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # add pg1 as a tracked interface and start the VR
+        adjustment = 50
+        adjusted_prio = prio - adjustment
+        vr.add_del_tracked_interface(is_add=1,
+                                     sw_if_index=self.pg1.sw_if_index,
+                                     prio=adjustment)
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        adv_configured = self.vrrp_adv_packet(prio=prio)
+        adv_adjusted = self.vrrp_adv_packet(prio=adjusted_prio)
+
+        # tracked intf is up ->  advertised priority == configured priority
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+        # take down pg1, verify priority is now being adjusted
+        self.pg1.admin_down()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_adjusted)
+
+        # bring up pg1, verify priority now matches configured value
+        self.pg1.admin_up()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+        # remove IP address from pg1, verify priority now being adjusted
+        self.pg1.unconfig_ip4()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_adjusted)
+
+        # add IP address to pg1, verify priority now matches configured value
+        self.pg1.config_ip4()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+    def test_vrrp4_master_adv_unicast(self):
+        """ IPv4 Master VR advertises (unicast) """
+
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.local_ip4
+        flags = (self._default_flags | VRRP_VR_FLAG_UNICAST)
+        unicast_peer = self.pg0.remote_hosts[4]
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+        vr.set_unicast_peers([unicast_peer.ip4])
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # Start VR, transition to master
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+
+        self.assertTrue(rx.haslayer(Ether))
+        self.assertTrue(rx.haslayer(IP))
+        self.assertTrue(rx.haslayer(VRRPv3))
+        self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+        self.assertEqual(rx[Ether].dst, unicast_peer.mac)
+        self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+        self.assertEqual(rx[IP].dst, unicast_peer.ip4)
+        self.assertEqual(rx[VRRPv3].vrid, vr_id)
+        self.assertEqual(rx[VRRPv3].priority, prio)
+        self.assertEqual(rx[VRRPv3].ipcount, 1)
+        self.assertEqual(rx[VRRPv3].addrlist, [vip])
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class TestVRRP6(VrrpCommonMixin, VppTestCase):
+    """ IPv6 VRRP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestVRRP6, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVRRP6, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestVRRP6, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.generate_remote_hosts(5)
+            i.configure_ipv6_neighbors()
+
+        self._vrs = []
+        self._default_flags = (VRRP_VR_FLAG_IPV6 | VRRP_VR_FLAG_PREEMPT)
+        self._default_adv = 100
+
+    def tearDown(self):
+        for vr in self._vrs:
+            try:
+                vr_api = vr.query_vpp_config()
+                if vr_api.runtime.state != VRRP_VR_STATE_INIT:
+                    vr.start_stop(is_start=0)
+                vr.remove_vpp_config()
+            except:
+                self.logger.error("Error cleaning up")
+
+        for i in self.pg_interfaces:
+            i.admin_down()
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+
+        self._vrs = []
+
+        super(TestVRRP6, self).tearDown()
+
+    def verify_vrrp6_mlr(self, pkt, vr):
+        ip6 = pkt[IPv6]
+        self.assertEqual(ip6.dst, "ff02::16")
+        self.assertEqual(ipv6nh[ip6.nh], "Hop-by-Hop Option Header")
+
+        hbh = pkt[IPv6ExtHdrHopByHop]
+        self.assertEqual(ipv6nh[hbh.nh], "ICMPv6")
+
+        self.assertTrue(pkt.haslayer(ICMPv6MLReport2))
+        mlr = pkt[ICMPv6MLReport2]
+        # should contain mc addr records for:
+        # - VRRPv3 multicast addr
+        # - solicited node mc addr record for each VR virtual IPv6 address
+        vips = vr.virtual_ips()
+        self.assertEqual(mlr.records_number, len(vips) + 1)
+        self.assertEqual(mlr.records[0].dst, vr.adv_dest_ip())
+
+    def verify_vrrp6_adv(self, rx_pkt, vr, prio=None):
+        self.assertTrue(rx_pkt.haslayer(Ether))
+        self.assertTrue(rx_pkt.haslayer(IPv6))
+        self.assertTrue(rx_pkt.haslayer(VRRPv3))
+
+        # generate a packet for this VR and compare it to the one received
+        pkt = self.vrrp_adv_packet(prio=prio)
+        self.assertTrue(rx_pkt.haslayer(Ether))
+        self.assertTrue(rx_pkt.haslayer(IPv6))
+        self.assertTrue(rx_pkt.haslayer(VRRPv3))
+
+        self.assertEqual(pkt, rx_pkt)
+
+    def verify_vrrp6_gna(self, pkt, vr):
+        self.assertTrue(pkt.haslayer(Ether))
+        self.assertTrue(pkt.haslayer(IPv6))
+        self.assertTrue(pkt.haslayer(ICMPv6ND_NA))
+        self.assertTrue(pkt.haslayer(ICMPv6NDOptDstLLAddr))
+
+        self.assertEqual(pkt[Ether].dst, "33:33:00:00:00:01")
+
+        self.assertEqual(pkt[IPv6].dst, "ff02::1")
+        # convert addrs to packed format since string versions could differ
+        src_addr = inet_pton(socket.AF_INET6, pkt[IPv6].src)
+        vr_ll_addr = inet_pton(socket.AF_INET6, vr.interface().local_ip6_ll)
+        self.assertEqual(src_addr, vr_ll_addr)
+
+        self.assertTrue(pkt[ICMPv6ND_NA].tgt in vr.virtual_ips())
+        self.assertEqual(pkt[ICMPv6NDOptDstLLAddr].lladdr, vr.virtual_mac())
+
+    # VR with priority 255 owns the virtual address and should
+    # become master and start advertising immediately.
+    def test_vrrp6_master_adv(self):
+        """ IPv6 Master VR advertises """
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        prio = 255
+        intvl = self._default_adv
+        vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags)
+        self._vrs.append(vr)
+
+        vr.add_vpp_config()
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+        vr.start_stop(is_start=1)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+        vr.start_stop(is_start=0)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+
+        pkts = self.pg0.get_capture(4, filter_out_fn=None)
+
+        # Init -> Master: Multicast group Join, VRRP adv, gratuitous NAs sent
+        self.verify_vrrp6_mlr(pkts[0], vr)
+        self.verify_vrrp6_adv(pkts[1], vr, prio=prio)
+        self.verify_vrrp6_gna(pkts[2], vr)
+        # Master -> Init: Adv with priority 0 sent to force an election
+        self.verify_vrrp6_adv(pkts[3], vr, prio=0)
+
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    # VR with priority < 255 enters backup state and does not advertise as
+    # long as it receives higher priority advertisements
+    def test_vrrp6_backup_noadv(self):
+        """ IPv6 Backup VR does not advertise """
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[self.pg0.remote_ip6])
+        vr.add_vpp_config()
+        self._vrs.append(vr)
+
+        vr.start_stop(is_start=1)
+
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        # watch for advertisements for 2x the master down preemption timeout
+        end_time = vr.start_time() + 2 * vr.master_down_seconds()
+
+        # Init -> Backup: A multicast listener report should be sent
+        pkts = self.pg0.get_capture(1, filter_out_fn=None)
+
+        # send higher prio advertisements, should not see VPP send any
+        src_ip = self.pg0.remote_ip6_ll
+        num_advs = 5
+        pkts = [self.vrrp_adv_packet(prio=prio+10, src_ip=src_ip)]
+        self.logger.info(self.vapi.cli("show vlib graph"))
+        while time.time() < end_time:
+            self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+            self.logger.info(self.vapi.cli("show trace"))
+            num_advs -= 1
+
+        vr.start_stop(is_start=0)
+        self.logger.info(self.vapi.cli("show vrrp vr"))
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    def test_vrrp6_master_nd(self):
+        """ IPv6 Master VR replies to NDP """
+        self.pg_start()
+
+        # VR virtual IP is the default, which is the pg local IP
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags)
+        vr.add_vpp_config()
+        self._vrs.append(vr)
+
+        # before the VR is up, NDP should resolve to interface MAC
+        self.pg0.resolve_ndp()
+        self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        # start the VR, NDP should now resolve to virtual MAC
+        vr.start_stop(is_start=1)
+        self.pg0.resolve_ndp()
+        self.assertEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        # stop the VR, ARP should resolve to interface MAC again
+        vr.start_stop(is_start=0)
+        self.pg0.resolve_ndp()
+        self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+        vr.remove_vpp_config()
+        self._vrs = []
+
+    def test_vrrp6_backup_nond(self):
+        """ IPv6 Backup VR ignores NDP """
+        # We need an address for a virtual IP that is not the IP that
+        # ARP requests will originate from
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.remote_hosts[1].ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        vr.add_vpp_config()
+        self._vrs.append(vr)
+
+        nsma = in6_getnsma(inet_pton(socket.AF_INET6, vip))
+        dmac = in6_getnsmac(nsma)
+        dst_ip = inet_ntop(socket.AF_INET6, nsma)
+
+        ndp_req = (Ether(dst=dmac, src=self.pg0.remote_mac) /
+                   IPv6(dst=dst_ip, src=self.pg0.remote_ip6) /
+                   ICMPv6ND_NS(tgt=vip) /
+                   ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+
+        # Before the VR is started make sure no reply to request for VIP
+        self.send_and_assert_no_replies(self.pg0, [ndp_req], timeout=1)
+
+        # VR should start in backup state and still should not reply to NDP
+        # send a higher priority adv to make sure it does not become master
+        adv = self.vrrp_adv_packet(prio=prio+10, src_ip=self.pg0.remote_ip6)
+        pkts = [adv, ndp_req]
+        vr.start_stop(is_start=1)
+        self.send_and_assert_no_replies(self.pg0, pkts,  timeout=intvl_s)
+
+        vr.start_stop(is_start=0)
+
+    def test_vrrp6_election(self):
+        """ IPv6 Backup VR becomes master if no advertisements received """
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.remote_ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        self.pg_start()
+        vr.start_stop(is_start=1)
+
+        # VR should be in backup state after starting
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        end_time = vr.start_time() + vr.master_down_seconds()
+
+        # no advertisements should arrive until timer expires
+        self.pg0.enable_capture()
+        while (time.time() + intvl_s) < end_time:
+            time.sleep(intvl_s)
+            self.pg0.assert_nothing_captured(filter_out_fn=is_not_adv)
+
+        # VR should be in master state after timer expires
+        self.pg0.enable_capture()
+        self.pg0.wait_for_packet(intvl_s, is_not_adv)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+    def test_vrrp6_backup_preempts(self):
+        """ IPv6 Backup VR preempts lower priority master """
+
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.remote_ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        self.pg_start()
+        vr.start_stop(is_start=1)
+
+        # VR should be in backup state after starting
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+        end_time = vr.start_time() + vr.master_down_seconds()
+
+        # send lower prio advertisements until timer expires
+        src_ip = self.pg0.remote_ip6
+        pkts = [self.vrrp_adv_packet(prio=prio-10, src_ip=src_ip)]
+        while (time.time() + intvl_s) < end_time:
+            self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+            self.logger.info(self.vapi.cli("show trace"))
+
+        # when timer expires, VR should take over as master
+        self.pg0.enable_capture()
+        self.pg0.wait_for_packet(timeout=intvl_s, filter_out_fn=is_not_adv)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+    def test_vrrp6_master_preempted(self):
+        """ IPv6 Master VR preempted by higher priority backup """
+
+        # A prio 255 VR cannot be preempted so the prio has to be lower and
+        # we have to wait for it to take over
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # Build advertisement packet and send it
+        pkts = [self.vrrp_adv_packet(prio=255, src_ip=self.pg0.remote_ip6)]
+        self.pg_send(self.pg0, pkts)
+
+        # VR should be in backup state again
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+    def test_vrrp6_accept_mode_disabled(self):
+        """ IPv6 Master VR does not reply for VIP w/ accept mode off """
+
+        # accept mode only matters when prio < 255, so it will have to
+        # come up as a backup and take over as master after the timeout
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_hosts[4].ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # send an ICMPv6 echo to the VR virtual IP address
+        echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+                IPv6(dst=vip, src=self.pg0.remote_ip6) /
+                ICMPv6EchoRequest(seq=1, id=self.pg0.sw_if_index))
+        self.pg_send(self.pg0, [echo])
+
+        # wait for an echo reply. none should be received
+        time.sleep(1)
+        self.pg0.assert_nothing_captured(filter_out_fn=is_not_echo_reply)
+
+    def test_vrrp6_accept_mode_enabled(self):
+        """ IPv6 Master VR replies for VIP w/ accept mode on """
+
+        # A prio 255 VR cannot be preempted so the prio has to be lower and
+        # we have to wait for it to take over
+        vr_id = 100
+        prio = 100
+        intvl = self._default_adv
+        vip = self.pg0.remote_hosts[4].ip6
+        flags = (self._default_flags | VRRP_VR_FLAG_ACCEPT)
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # start VR
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+        # wait for VR to take over as master
+        end_time = vr.start_time() + vr.master_down_seconds()
+        sleep_s = end_time - time.time()
+        time.sleep(sleep_s)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        # send an ICMP echo to the VR virtual IP address
+        echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+                IPv6(dst=vip, src=self.pg0.remote_ip6) /
+                ICMPv6EchoRequest(seq=1, id=self.pg0.sw_if_index))
+        self.pg_send(self.pg0, [echo])
+
+        # wait for an echo reply.
+        time.sleep(1)
+        rx_pkts = self.pg0.get_capture(expected_count=1, timeout=1,
+                                       filter_out_fn=is_not_echo_reply)
+
+        self.assertEqual(rx_pkts[0][IPv6].src, vip)
+        self.assertEqual(rx_pkts[0][IPv6].dst, self.pg0.remote_ip6)
+        self.assertEqual(rx_pkts[0][ICMPv6EchoReply].seq, 1)
+        self.assertEqual(rx_pkts[0][ICMPv6EchoReply].id, self.pg0.sw_if_index)
+
+    def test_vrrp6_intf_tracking(self):
+        """ IPv6 Master VR adjusts priority based on tracked interface """
+
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.local_ip6
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=self._default_flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # add pg1 as a tracked interface and start the VR
+        adjustment = 50
+        adjusted_prio = prio - adjustment
+        vr.add_del_tracked_interface(is_add=1,
+                                     sw_if_index=self.pg1.sw_if_index,
+                                     prio=adjustment)
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        adv_configured = self.vrrp_adv_packet(prio=prio)
+        adv_adjusted = self.vrrp_adv_packet(prio=adjusted_prio)
+
+        # tracked intf is up ->  advertised priority == configured priority
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+        # take down pg1, verify priority is now being adjusted
+        self.pg1.admin_down()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_adjusted)
+
+        # bring up pg1, verify priority now matches configured value
+        self.pg1.admin_up()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+        # remove IP address from pg1, verify priority now being adjusted
+        self.pg1.unconfig_ip6()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_adjusted)
+
+        # add IP address to pg1, verify priority now matches configured value
+        self.pg1.config_ip6()
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+        self.assertEqual(rx, adv_configured)
+
+    def test_vrrp6_master_adv_unicast(self):
+        """ IPv6 Master VR advertises (unicast) """
+
+        vr_id = 100
+        prio = 255
+        intvl = self._default_adv
+        intvl_s = intvl * 0.01
+        vip = self.pg0.local_ip6
+        flags = (self._default_flags | VRRP_VR_FLAG_UNICAST)
+        unicast_peer = self.pg0.remote_hosts[4]
+        vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+                                  prio=prio, intvl=intvl,
+                                  flags=flags,
+                                  vips=[vip])
+        self._vrs.append(vr)
+        vr.add_vpp_config()
+        vr.set_unicast_peers([unicast_peer.ip6])
+
+        # After adding the VR, it should be in the init state
+        vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+        # Start VR, transition to master
+        vr.start_stop(is_start=1)
+        vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+        self.pg0.enable_capture()
+        rx = self.pg0.wait_for_packet(timeout=intvl_s,
+                                      filter_out_fn=is_not_adv)
+
+        self.assertTrue(rx.haslayer(Ether))
+        self.assertTrue(rx.haslayer(IPv6))
+        self.assertTrue(rx.haslayer(VRRPv3))
+        self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+        self.assertEqual(rx[Ether].dst, unicast_peer.mac)
+        self.assertEqual(ip6_normalize(rx[IPv6].src),
+                         ip6_normalize(self.pg0.local_ip6_ll))
+        self.assertEqual(ip6_normalize(rx[IPv6].dst),
+                         ip6_normalize(unicast_peer.ip6))
+        self.assertEqual(rx[VRRPv3].vrid, vr_id)
+        self.assertEqual(rx[VRRPv3].priority, prio)
+        self.assertEqual(rx[VRRPv3].ipcount, 1)
+        self.assertEqual(rx[VRRPv3].addrlist, [vip])
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vxlan.py b/test/test_vxlan.py
new file mode 100644
index 0000000..028275c
--- /dev/null
+++ b/test/test_vxlan.py
@@ -0,0 +1,421 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range, reassemble4
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw, bind_layers
+from scapy.layers.inet import IP, UDP
+from scapy.layers.vxlan import VXLAN
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_vxlan_tunnel import VppVxlanTunnel
+from vpp_ip import INVALID_INDEX
+
+
+class TestVxlan(BridgeDomain, VppTestCase):
+    """ VXLAN Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def ip_range(self, start, end):
+        """ range of remote ip's """
+        return ip4_range(self.pg0.remote_ip4, start, end)
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IP(src=src_ip, dst=self.mcast_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing VXLAN header
+        """
+        # check if is set I flag
+        self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
+        return pkt[VXLAN].payload
+
+    # Method for checking VXLAN encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # TODO: add error messages
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
+        self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+            else:
+                self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+        # Verify UDP destination port is VXLAN 4789, source UDP port could be
+        #  arbitrary.
+        self.assertEqual(pkt[UDP].dport, self.dport)
+        # Verify UDP checksum
+        self.assert_udp_checksum_valid(pkt)
+        # Verify VNI
+        self.assertEqual(pkt[VXLAN].vni, vni)
+
+    @classmethod
+    def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels, port):
+        # Create 10 ucast vxlan tunnels under bd
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_ucast_tunnels
+        next_hop_address = cls.pg0.remote_ip4
+        for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+                                  ip_range_end):
+            # add host route so dest_ip4 will not be resolved
+            rip = VppIpRoute(cls, dest_ip4, 32,
+                             [VppRoutePath(next_hop_address,
+                                           INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+
+            r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+                               src_port=port, dst_port=port,
+                               dst=dest_ip4, vni=vni)
+            r.add_vpp_config()
+            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
+
+    @classmethod
+    def add_del_shared_mcast_dst_load(cls, port, is_add):
+        """
+        add or del tunnels sharing the same mcast dst
+        to test vxlan ref_count mechanism
+        """
+        n_shared_dst_tunnels = 20
+        vni_start = 10000
+        vni_end = vni_start + n_shared_dst_tunnels
+        for vni in range(vni_start, vni_end):
+            r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+                               src_port=port, dst_port=port,
+                               dst=cls.mcast_ip4, mcast_sw_if_index=1, vni=vni)
+            if is_add:
+                r.add_vpp_config()
+                if r.sw_if_index == 0xffffffff:
+                    raise ValueError("bad sw_if_index: ~0")
+            else:
+                r.remove_vpp_config()
+
+    @classmethod
+    def add_shared_mcast_dst_load(cls, port):
+        cls.add_del_shared_mcast_dst_load(port=port, is_add=1)
+
+    @classmethod
+    def del_shared_mcast_dst_load(cls, port):
+        cls.add_del_shared_mcast_dst_load(port=port, is_add=0)
+
+    @classmethod
+    def add_del_mcast_tunnels_load(cls, port, is_add):
+        """
+        add or del tunnels to test vxlan stability
+        """
+        n_distinct_dst_tunnels = 200
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_distinct_dst_tunnels
+        for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+                                  ip_range_end):
+            vni = bytearray(socket.inet_pton(socket.AF_INET, dest_ip4))[3]
+            r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+                               src_port=port, dst_port=port,
+                               dst=dest_ip4, mcast_sw_if_index=1, vni=vni)
+            if is_add:
+                r.add_vpp_config()
+            else:
+                r.remove_vpp_config()
+
+    @classmethod
+    def add_mcast_tunnels_load(cls, port):
+        cls.add_del_mcast_tunnels_load(port=port, is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls, port):
+        cls.add_del_mcast_tunnels_load(port=port, is_add=0)
+
+    # Class method to start the VXLAN test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestVxlan, cls).setUpClass()
+
+        try:
+            cls.flags = 0x8
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip4()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_arp()
+
+            # Our Multicast address
+            cls.mcast_ip4 = '239.1.1.1'
+            cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+        except Exception:
+            cls.tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVxlan, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestVxlan, self).setUp()
+
+    def createVxLANInterfaces(self, port=4789):
+        # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
+        #  into BD.
+        self.dport = port
+
+        self.single_tunnel_vni = 0x12345
+        self.single_tunnel_bd = 1
+        r = VppVxlanTunnel(self, src=self.pg0.local_ip4,
+                           dst=self.pg0.remote_ip4,
+                           src_port=self.dport, dst_port=self.dport,
+                           vni=self.single_tunnel_vni)
+        r.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                             bd_id=self.single_tunnel_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=self.single_tunnel_bd)
+
+        # Setup vni 2 to test multicast flooding
+        self.n_ucast_tunnels = 10
+        self.mcast_flood_bd = 2
+        self.create_vxlan_flood_test_bd(self.mcast_flood_bd,
+                                        self.n_ucast_tunnels,
+                                        self.dport)
+        r = VppVxlanTunnel(self, src=self.pg0.local_ip4, dst=self.mcast_ip4,
+                           src_port=self.dport, dst_port=self.dport,
+                           mcast_sw_if_index=1, vni=self.mcast_flood_bd)
+        r.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                             bd_id=self.mcast_flood_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.mcast_flood_bd)
+
+        # Add and delete mcast tunnels to check stability
+        self.add_shared_mcast_dst_load(self.dport)
+        self.add_mcast_tunnels_load(self.dport)
+        self.del_shared_mcast_dst_load(self.dport)
+        self.del_mcast_tunnels_load(self.dport)
+
+        # Setup vni 3 to test unicast flooding
+        self.ucast_flood_bd = 3
+        self.create_vxlan_flood_test_bd(self.ucast_flood_bd,
+                                        self.n_ucast_tunnels,
+                                        self.dport)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd)
+
+        # Set scapy listen custom port for VxLAN
+        bind_layers(UDP, VXLAN, dport=self.dport)
+
+    def encap_big_packet(self):
+        self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1500, 0, 0, 0])
+
+        frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+                 IP(src='4.3.2.1', dst='1.2.3.4') /
+                 UDP(sport=20000, dport=10000) /
+                 Raw(b'\xa5' * 1450))
+
+        self.pg1.add_stream([frame])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's correctly encapsulated.
+        out = self.pg0.get_capture(2)
+        ether = out[0]
+        pkt = reassemble4(out)
+        pkt = ether / pkt
+        self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+        payload = self.decapsulate(pkt)
+        # TODO: Scapy bug?
+        # self.assert_eq_pkts(payload, frame)
+
+    """
+    Tests with default port (4789)
+    """
+    def test_decap(self):
+        """ Decapsulation test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan, self).test_decap()
+
+    def test_encap(self):
+        """ Encapsulation test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan, self).test_encap()
+
+    def test_encap_big_packet(self):
+        """ Encapsulation test send big frame from pg1
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.createVxLANInterfaces()
+        self.encap_big_packet()
+
+    def test_ucast_flood(self):
+        """ Unicast flood test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan, self).test_ucast_flood()
+
+    def test_mcast_flood(self):
+        """ Multicast flood test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan, self).test_mcast_flood()
+
+    def test_mcast_rcv(self):
+        """ Multicast receive test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan, self).test_mcast_rcv()
+
+    """
+    Tests with custom port
+    """
+    def test_decap_custom_port(self):
+        """ Decapsulation test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan, self).test_decap()
+
+    def test_encap_custom_port(self):
+        """ Encapsulation test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan, self).test_encap()
+
+    def test_ucast_flood_custom_port(self):
+        """ Unicast flood test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan, self).test_ucast_flood()
+
+    def test_mcast_flood_custom_port(self):
+        """ Multicast flood test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan, self).test_mcast_flood()
+
+    def test_mcast_rcv_custom_port(self):
+        """ Multicast receive test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan, self).test_mcast_rcv()
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+
+    def tearDown(self):
+        super(TestVxlan, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+        self.logger.info(self.vapi.cli("show vxlan tunnel"))
+
+
+class TestVxlan2(VppTestCase):
+    """ VXLAN Test Case """
+    def setUp(self):
+        super(TestVxlan2, self).setUp()
+
+        # Create 2 pg interfaces.
+        self.create_pg_interfaces(range(4))
+        for pg in self.pg_interfaces:
+            pg.admin_up()
+
+        # Configure IPv4 addresses on VPP pg0.
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+
+    def tearDown(self):
+        super(TestVxlan2, self).tearDown()
+
+    def test_xconnect(self):
+        """ VXLAN source address not local """
+
+        #
+        # test the broken configuration of a VXLAN tunnel whose
+        # source address is not local ot the box. packets sent
+        # through the tunnel should be dropped
+        #
+        t = VppVxlanTunnel(self,
+                           src="10.0.0.5",
+                           dst=self.pg0.local_ip4,
+                           vni=1000)
+        t.add_vpp_config()
+        t.admin_up()
+
+        self.vapi.sw_interface_set_l2_xconnect(t.sw_if_index,
+                                               self.pg1.sw_if_index,
+                                               enable=1)
+        self.vapi.sw_interface_set_l2_xconnect(self.pg1.sw_if_index,
+                                               t.sw_if_index,
+                                               enable=1)
+
+        p = (Ether(src="00:11:22:33:44:55",
+                   dst="00:00:00:11:22:33") /
+             IP(src="4.3.2.1", dst="1.2.3.4") /
+             UDP(sport=20000, dport=10000) /
+             Raw(b'\xa5' * 1450))
+
+        rx = self.send_and_assert_no_replies(self.pg1, [p])
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vxlan6.py b/test/test_vxlan6.py
new file mode 100644
index 0000000..123cce9
--- /dev/null
+++ b/test/test_vxlan6.py
@@ -0,0 +1,316 @@
+#!/usr/bin/env python3
+
+import socket
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw, bind_layers
+from scapy.layers.inet6 import IP, IPv6, UDP
+from scapy.layers.vxlan import VXLAN
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_vxlan_tunnel import VppVxlanTunnel
+from vpp_ip import INVALID_INDEX
+
+
+class TestVxlan6(BridgeDomain, VppTestCase):
+    """ VXLAN over IPv6 Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    @classmethod
+    def ip_range(cls, s, e):
+        """ range of remote ip's """
+        tmp = cls.pg0.remote_ip6.rsplit(':', 1)[0]
+        return ("%s:%x" % (tmp, i) for i in range(s, e))
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IPv6(src=src_ip, dst=self.mcast_ip6) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing VXLAN header
+        """
+        # check if is set I flag
+        self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
+        return pkt[VXLAN].payload
+
+    # Method for checking VXLAN encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # TODO: add error messages
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
+        self.assertEqual(pkt[IPv6].src, self.pg0.local_ip6)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IPv6].dst, self.pg0.remote_ip6)
+            else:
+                self.assertEqual(pkt[IPv6].dst, type(self).mcast_ip6)
+        # Verify UDP destination port is VXLAN 4789, source UDP port could be
+        #  arbitrary.
+        self.assertEqual(pkt[UDP].dport, self.dport)
+        # Verify UDP checksum
+        self.assert_udp_checksum_valid(pkt, ignore_zero_checksum=False)
+        # Verify VNI
+        self.assertEqual(pkt[VXLAN].vni, vni)
+
+    @classmethod
+    def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels, port):
+        # Create 10 ucast vxlan tunnels under bd
+        start = 10
+        end = start + n_ucast_tunnels
+        for dest_ip6 in cls.ip_range(start, end):
+            # add host route so dest ip will not be resolved
+            rip = VppIpRoute(cls, dest_ip6, 128,
+                             [VppRoutePath(cls.pg0.remote_ip6, INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+            r = VppVxlanTunnel(cls, src=cls.pg0.local_ip6,
+                               src_port=port, dst_port=port,
+                               dst=dest_ip6, vni=vni)
+            r.add_vpp_config()
+            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
+
+    @classmethod
+    def add_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=0)
+
+    # Class method to start the VXLAN test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestVxlan6, cls).setUpClass()
+
+        try:
+            cls.flags = 0x8
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv6 addresses on VPP pg0.
+            cls.pg0.config_ip6()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_ndp()
+
+            # Our Multicast address
+            cls.mcast_ip6 = 'ff0e::1'
+            cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip6)
+        except Exception:
+            super(TestVxlan6, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVxlan6, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestVxlan6, self).setUp()
+
+    def createVxLANInterfaces(self, port=4789):
+        # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
+        #  into BD.
+        self.dport = port
+
+        self.single_tunnel_vni = 0x12345
+        self.single_tunnel_bd = 1
+        r = VppVxlanTunnel(self, src=self.pg0.local_ip6,
+                           dst=self.pg0.remote_ip6,
+                           src_port=self.dport, dst_port=self.dport,
+                           vni=self.single_tunnel_vni)
+        r.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                             bd_id=self.single_tunnel_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=self.single_tunnel_bd)
+
+        # Setup vni 2 to test multicast flooding
+        self.n_ucast_tunnels = 10
+        self.mcast_flood_bd = 2
+        self.create_vxlan_flood_test_bd(self.mcast_flood_bd,
+                                        self.n_ucast_tunnels,
+                                        self.dport)
+        r = VppVxlanTunnel(self, src=self.pg0.local_ip6, dst=self.mcast_ip6,
+                           src_port=self.dport, dst_port=self.dport,
+                           mcast_sw_if_index=1, vni=self.mcast_flood_bd)
+        r.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                             bd_id=self.mcast_flood_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.mcast_flood_bd)
+
+        # Setup vni 3 to test unicast flooding
+        self.ucast_flood_bd = 3
+        self.create_vxlan_flood_test_bd(self.ucast_flood_bd,
+                                        self.n_ucast_tunnels,
+                                        self.dport)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd)
+
+        # Set scapy listen custom port for VxLAN
+        bind_layers(UDP, VXLAN, dport=self.dport)
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+    def tearDown(self):
+        super(TestVxlan6, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+        self.logger.info(self.vapi.cli("show vxlan tunnel"))
+
+    def encap_fragmented_packet(self):
+        frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+                 IP(src='4.3.2.1', dst='1.2.3.4') /
+                 UDP(sport=20000, dport=10000) /
+                 Raw(b'\xa5' * 1000))
+
+        frags = util.fragment_rfc791(frame, 400)
+
+        self.pg1.add_stream(frags)
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        out = self.pg0.get_capture(3)
+
+        payload = []
+        for pkt in out:
+            payload.append(self.decapsulate(pkt))
+            self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+        reassembled = util.reassemble4(payload)
+
+        self.assertEqual(Ether(raw(frame))[IP], reassembled[IP])
+
+    """
+    Tests with default port (4789)
+    """
+    def test_decap(self):
+        """ Decapsulation test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan6, self).test_decap()
+
+    def test_encap(self):
+        """ Encapsulation test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan6, self).test_encap()
+
+    def test_encap_fragmented_packet(self):
+        """ Encapsulation test send fragments from pg1
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.createVxLANInterfaces()
+        self.encap_fragmented_packet()
+
+    def test_ucast_flood(self):
+        """ Unicast flood test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan6, self).test_ucast_flood()
+
+    def test_mcast_flood(self):
+        """ Multicast flood test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan6, self).test_mcast_flood()
+
+    def test_mcast_rcv(self):
+        """ Multicast receive test
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces()
+        super(TestVxlan6, self).test_mcast_rcv()
+
+    """
+    Tests with custom port
+    """
+    def test_decap_custom_port(self):
+        """ Decapsulation test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan6, self).test_decap()
+
+    def test_encap_custom_port(self):
+        """ Encapsulation test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan6, self).test_encap()
+
+    def test_ucast_flood_custom_port(self):
+        """ Unicast flood test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan6, self).test_ucast_flood()
+
+    def test_mcast_flood_custom_port(self):
+        """ Multicast flood test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan6, self).test_mcast_flood()
+
+    def test_mcast_rcv_custom_port(self):
+        """ Multicast receive test custom port
+        from BridgeDoman
+        """
+        self.createVxLANInterfaces(1111)
+        super(TestVxlan6, self).test_mcast_rcv()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vxlan_gbp.py b/test/test_vxlan_gbp.py
new file mode 100644
index 0000000..f332ace
--- /dev/null
+++ b/test/test_vxlan_gbp.py
@@ -0,0 +1,293 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range, reassemble4_ether
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP
+from scapy.layers.vxlan import VXLAN
+
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+
+class TestVxlanGbp(VppTestCase):
+    """ VXLAN GBP Test Case """
+
+    @property
+    def frame_request(self):
+        """ Ethernet frame modeling a generic request """
+        return (Ether(src='00:00:00:00:00:01', dst='00:00:00:00:00:02') /
+                IP(src='1.2.3.4', dst='4.3.2.1') /
+                UDP(sport=10000, dport=20000) /
+                Raw(b'\xa5' * 100))
+
+    @property
+    def frame_reply(self):
+        """ Ethernet frame modeling a generic reply """
+        return (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+                IP(src='4.3.2.1', dst='1.2.3.4') /
+                UDP(sport=20000, dport=10000) /
+                Raw(b'\xa5' * 100))
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN GBP header with
+        its UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags, gpflags=self.gpflags,
+                gpid=self.sclass) / pkt)
+
+    def ip_range(self, start, end):
+        """ range of remote ip's """
+        return ip4_range(self.pg0.remote_ip4, start, end)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing VXLAN header
+        """
+        # check if is set G and I flag
+        self.assertEqual(pkt[VXLAN].flags, int('0x88', 16))
+        return pkt[VXLAN].payload
+
+    # Method for checking VXLAN GBP encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # TODO: add error messages
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify VXLAN GBP tunnel source IP is VPP_IP and destination IP is
+        # MY_IP.
+        self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+            else:
+                self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+        # Verify UDP destination port is VXLAN GBP 48879, source UDP port could
+        # be arbitrary.
+        self.assertEqual(pkt[UDP].dport, type(self).dport)
+        # Verify UDP checksum
+        self.assert_udp_checksum_valid(pkt)
+        # Verify VNI
+        # pkt.show()
+        self.assertEqual(pkt[VXLAN].vni, vni)
+        # Verify Source Class
+        self.assertEqual(pkt[VXLAN].gpid, 0)
+
+    @classmethod
+    def create_vxlan_gbp_flood_test_bd(cls, vni, n_ucast_tunnels):
+        # Create 2 ucast vxlan tunnels under bd
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_ucast_tunnels
+        next_hop_address = cls.pg0.remote_ip4
+        for dest_ip4 in ip4_range(cls.pg0.remote_ip4,
+                                  ip_range_start,
+                                  ip_range_end):
+            # add host route so dest_ip4 will not be resolved
+            rip = VppIpRoute(cls, dest_ip4, 32,
+                             [VppRoutePath(next_hop_address,
+                                           INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+            r = cls.vapi.vxlan_gbp_tunnel_add_del(
+                tunnel={
+                    'src': cls.pg0.local_ip4,
+                    'dst': dest_ip4,
+                    'vni': vni,
+                    'instance': INVALID_INDEX,
+                    'mcast_sw_if_index': INVALID_INDEX,
+                    'mode': 1,
+                },
+                is_add=1
+            )
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=vni)
+
+    # Class method to start the VXLAN GBP test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestVxlanGbp, cls).setUpClass()
+
+        try:
+            cls.dport = 48879
+            cls.flags = 0x88
+            cls.gpflags = 0x0
+            cls.sclass = 0
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip4()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_arp()
+
+            # Create VXLAN GBP VTEP on VPP pg0, and put vxlan_gbp_tunnel0 and
+            # pg1 into BD.
+            cls.single_tunnel_bd = 1
+            cls.single_tunnel_vni = 0xabcde
+            r = cls.vapi.vxlan_gbp_tunnel_add_del(
+                tunnel={
+                    'src': cls.pg0.local_ip4,
+                    'dst': cls.pg0.remote_ip4,
+                    'vni': cls.single_tunnel_vni,
+                    'instance': INVALID_INDEX,
+                    'mcast_sw_if_index': INVALID_INDEX,
+                    'mode': 1,
+                },
+                is_add=1
+            )
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1.sw_if_index,
+                bd_id=cls.single_tunnel_bd)
+
+            # Setup vni 2 to test multicast flooding
+            cls.n_ucast_tunnels = 2
+            # Setup vni 3 to test unicast flooding
+            cls.ucast_flood_bd = 3
+            cls.create_vxlan_gbp_flood_test_bd(cls.ucast_flood_bd,
+                                               cls.n_ucast_tunnels)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg3.sw_if_index,
+                bd_id=cls.ucast_flood_bd)
+        except Exception:
+            super(TestVxlanGbp, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVxlanGbp, cls).tearDownClass()
+
+    def assert_eq_pkts(self, pkt1, pkt2):
+        """ Verify the Ether, IP, UDP, payload are equal in both
+        packets
+        """
+        self.assertEqual(pkt1[Ether].src, pkt2[Ether].src)
+        self.assertEqual(pkt1[Ether].dst, pkt2[Ether].dst)
+        self.assertEqual(pkt1[IP].src, pkt2[IP].src)
+        self.assertEqual(pkt1[IP].dst, pkt2[IP].dst)
+        self.assertEqual(pkt1[UDP].sport, pkt2[UDP].sport)
+        self.assertEqual(pkt1[UDP].dport, pkt2[UDP].dport)
+        self.assertEqual(pkt1[Raw], pkt2[Raw])
+
+    def test_decap(self):
+        """ Decapsulation test
+        Send encapsulated frames from pg0
+        Verify receipt of decapsulated frames on pg1
+        """
+        encapsulated_pkt = self.encapsulate(self.frame_request,
+                                            self.single_tunnel_vni)
+
+        self.pg0.add_stream([encapsulated_pkt, ])
+
+        self.pg1.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's the non-encapsulated
+        # frame
+        out = self.pg1.get_capture(1)
+        pkt = out[0]
+        self.assert_eq_pkts(pkt, self.frame_request)
+
+    def test_encap(self):
+        """ Encapsulation test
+        Send frames from pg1
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.pg1.add_stream([self.frame_reply])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's correctly encapsulated.
+        out = self.pg0.get_capture(1)
+        pkt = out[0]
+        self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+        payload = self.decapsulate(pkt)
+        self.assert_eq_pkts(payload, self.frame_reply)
+
+    def test_ucast_flood(self):
+        """ Unicast flood test
+        Send frames from pg3
+        Verify receipt of encapsulated frames on pg0
+        """
+        self.pg3.add_stream([self.frame_reply])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Get packet from each tunnel and assert it's correctly encapsulated.
+        out = self.pg0.get_capture(self.n_ucast_tunnels)
+        for pkt in out:
+            self.check_encapsulation(pkt, self.ucast_flood_bd, True)
+            payload = self.decapsulate(pkt)
+            self.assert_eq_pkts(payload, self.frame_reply)
+
+    def test_encap_big_packet(self):
+        """ Encapsulation test send big frame from pg1
+        Verify receipt of encapsulated frames on pg0
+        """
+
+        self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1500, 0, 0, 0])
+
+        frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+                 IP(src='4.3.2.1', dst='1.2.3.4') /
+                 UDP(sport=20000, dport=10000) /
+                 Raw(b'\xa5' * 1450))
+
+        self.pg1.add_stream([frame])
+
+        self.pg0.enable_capture()
+
+        self.pg_start()
+
+        # Pick first received frame and check if it's correctly encapsulated.
+        out = self.pg0.get_capture(2)
+        pkt = reassemble4_ether(out)
+        self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+        payload = self.decapsulate(pkt)
+        self.assert_eq_pkts(payload, frame)
+
+# Method to define VPP actions before tear down of the test case.
+#  Overrides tearDown method in VppTestCase class.
+#  @param self The object pointer.
+    def tearDown(self):
+        super(TestVxlanGbp, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+        self.logger.info(self.vapi.cli("show vxlan-gbp tunnel"))
+        self.logger.info(self.vapi.cli("show error"))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_vxlan_gpe.py b/test/test_vxlan_gpe.py
new file mode 100644
index 0000000..c5d6bf0
--- /dev/null
+++ b/test/test_vxlan_gpe.py
@@ -0,0 +1,265 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range
+import unittest
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from scapy.layers.inet import IP, UDP
+from scapy.layers.vxlan import VXLAN
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+
+from vpp_ip import INVALID_INDEX
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class TestVxlanGpe(BridgeDomain, VppTestCase):
+    """ VXLAN-GPE Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN-GPE header
+        with its UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def ip_range(self, start, end):
+        """ range of remote ip's """
+        return ip4_range(self.pg0.remote_ip4, start, end)
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN-GPE header
+        with its UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IP(src=src_ip, dst=self.mcast_ip4) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing VXLAN-GPE header
+        """
+        # check if is set I and P flag
+        self.assertEqual(pkt[VXLAN].flags, 0x0c)
+        return pkt[VXLAN].payload
+
+    # Method for checking VXLAN-GPE encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify VXLAN-GPE tunnel src IP is VPP_IP and dst IP is MY_IP.
+        self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+            else:
+                self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+        # Verify UDP destination port is VXLAN-GPE 4790, source UDP port
+        #  could be arbitrary.
+        self.assertEqual(pkt[UDP].dport, type(self).dport)
+        # Verify UDP checksum
+        self.assert_udp_checksum_valid(pkt)
+        # Verify VNI
+        self.assertEqual(pkt[VXLAN].vni, vni)
+
+    @classmethod
+    def create_vxlan_gpe_flood_test_bd(cls, vni, n_ucast_tunnels):
+        # Create 10 ucast vxlan tunnels under bd
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_ucast_tunnels
+        next_hop_address = cls.pg0.remote_ip4
+        for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+                                  ip_range_end):
+            # add host route so dest_ip4n will not be resolved
+            rip = VppIpRoute(cls, dest_ip4, 32,
+                             [VppRoutePath(next_hop_address,
+                                           INVALID_INDEX)],
+                             register=False)
+            rip.add_vpp_config()
+
+            r = cls.vapi.vxlan_gpe_add_del_tunnel(
+                src_addr=cls.pg0.local_ip4,
+                dst_addr=dest_ip4,
+                vni=vni)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=vni)
+
+    @classmethod
+    def add_del_shared_mcast_dst_load(cls, is_add):
+        """
+        add or del tunnels sharing the same mcast dst
+        to test vxlan_gpe ref_count mechanism
+        """
+        n_shared_dst_tunnels = 20
+        vni_start = 1000
+        vni_end = vni_start + n_shared_dst_tunnels
+        for vni in range(vni_start, vni_end):
+            r = cls.vapi.vxlan_gpe_add_del_tunnel(
+                local=cls.pg0.local_ip4,
+                remote=cls.mcast_ip4,
+                mcast_sw_if_index=1,
+                vni=vni,
+                is_add=is_add)
+            if r.sw_if_index == 0xffffffff:
+                raise ValueError("bad sw_if_index: ~0")
+
+    @classmethod
+    def add_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=1)
+
+    @classmethod
+    def del_shared_mcast_dst_load(cls):
+        cls.add_del_shared_mcast_dst_load(is_add=0)
+
+    @classmethod
+    def add_del_mcast_tunnels_load(cls, is_add):
+        """
+        add or del tunnels to test vxlan_gpe stability
+        """
+        n_distinct_dst_tunnels = 20
+        ip_range_start = 10
+        ip_range_end = ip_range_start + n_distinct_dst_tunnels
+        for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+                                  ip_range_end):
+            vni = int(dest_ip4.split(".")[3])
+            cls.vapi.vxlan_gpe_add_del_tunnel(
+                src_addr=cls.pg0.local_ip4,
+                dst_addr=dest_ip4,
+                mcast_sw_if_index=1,
+                vni=vni,
+                is_add=is_add)
+
+    @classmethod
+    def add_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=0)
+
+    # Class method to start the VXLAN-GPE test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestVxlanGpe, cls).setUpClass()
+
+        try:
+            cls.dport = 4790
+            cls.flags = 0x0c
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip4()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_arp()
+
+            # Our Multicast address
+            cls.mcast_ip4 = '239.1.1.1'
+            cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+
+            # Create VXLAN-GPE VTEP on VPP pg0, and put vxlan_gpe_tunnel0
+            # and pg1 into BD.
+            cls.single_tunnel_vni = 0xabcde
+            cls.single_tunnel_bd = 11
+            r = cls.vapi.vxlan_gpe_add_del_tunnel(
+                src_addr=cls.pg0.local_ip4,
+                dst_addr=cls.pg0.remote_ip4,
+                vni=cls.single_tunnel_vni)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd)
+
+            # Setup vni 2 to test multicast flooding
+            cls.n_ucast_tunnels = 10
+            cls.mcast_flood_bd = 12
+            cls.create_vxlan_gpe_flood_test_bd(cls.mcast_flood_bd,
+                                               cls.n_ucast_tunnels)
+            r = cls.vapi.vxlan_gpe_add_del_tunnel(
+                src_addr=cls.pg0.local_ip4,
+                dst_addr=cls.mcast_ip4,
+                mcast_sw_if_index=1,
+                vni=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+                                                bd_id=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd)
+
+            # Add and delete mcast tunnels to check stability
+            cls.add_shared_mcast_dst_load()
+            cls.add_mcast_tunnels_load()
+            cls.del_shared_mcast_dst_load()
+            cls.del_mcast_tunnels_load()
+
+            # Setup vni 3 to test unicast flooding
+            cls.ucast_flood_bd = 13
+            cls.create_vxlan_gpe_flood_test_bd(cls.ucast_flood_bd,
+                                               cls.n_ucast_tunnels)
+            cls.vapi.sw_interface_set_l2_bridge(
+                rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd)
+        except Exception:
+            super(TestVxlanGpe, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestVxlanGpe, cls).tearDownClass()
+
+    @unittest.skip("test disabled for vxlan-gpe")
+    def test_mcast_flood(self):
+        """ inherited from BridgeDomain """
+        pass
+
+    @unittest.skip("test disabled for vxlan-gpe")
+    def test_mcast_rcv(self):
+        """ inherited from BridgeDomain """
+        pass
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+    def tearDown(self):
+        super(TestVxlanGpe, self).tearDown()
+
+    def show_commands_at_teardown(self):
+        self.logger.info(self.vapi.cli("show bridge-domain 11 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 12 detail"))
+        self.logger.info(self.vapi.cli("show bridge-domain 13 detail"))
+        self.logger.info(self.vapi.cli("show int"))
+        self.logger.info(self.vapi.cli("show vxlan-gpe"))
+        self.logger.info(self.vapi.cli("show trace"))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_wireguard.py b/test/test_wireguard.py
new file mode 100755
index 0000000..edc305b
--- /dev/null
+++ b/test/test_wireguard.py
@@ -0,0 +1,748 @@
+#!/usr/bin/env python3
+""" Wg tests """
+
+import datetime
+import base64
+
+from hashlib import blake2s
+from scapy.packet import Packet
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, UDP
+from scapy.contrib.wireguard import Wireguard, WireguardResponse, \
+    WireguardInitiation, WireguardTransport
+from cryptography.hazmat.primitives.asymmetric.x25519 import \
+    X25519PrivateKey, X25519PublicKey
+from cryptography.hazmat.primitives.serialization import Encoding, \
+    PrivateFormat, PublicFormat, NoEncryption
+from cryptography.hazmat.primitives.hashes import BLAKE2s, Hash
+from cryptography.hazmat.primitives.hmac import HMAC
+from cryptography.hazmat.backends import default_backend
+from noise.connection import NoiseConnection, Keypair
+
+from vpp_ipip_tun_interface import VppIpIpTunInterface
+from vpp_interface import VppInterface
+from vpp_object import VppObject
+from framework import VppTestCase
+from re import compile
+import unittest
+
+""" TestWg is a subclass of  VPPTestCase classes.
+
+Wg test.
+
+"""
+
+
+def private_key_bytes(k):
+    return k.private_bytes(Encoding.Raw,
+                           PrivateFormat.Raw,
+                           NoEncryption())
+
+
+def public_key_bytes(k):
+    return k.public_bytes(Encoding.Raw,
+                          PublicFormat.Raw)
+
+
+class VppWgInterface(VppInterface):
+    """
+    VPP WireGuard interface
+    """
+
+    def __init__(self, test, src, port):
+        super(VppWgInterface, self).__init__(test)
+
+        self.port = port
+        self.src = src
+        self.private_key = X25519PrivateKey.generate()
+        self.public_key = self.private_key.public_key()
+
+    def public_key_bytes(self):
+        return public_key_bytes(self.public_key)
+
+    def private_key_bytes(self):
+        return private_key_bytes(self.private_key)
+
+    def add_vpp_config(self):
+        r = self.test.vapi.wireguard_interface_create(interface={
+            'user_instance': 0xffffffff,
+            'port': self.port,
+            'src_ip': self.src,
+            'private_key': private_key_bytes(self.private_key),
+            'generate_key': False
+        })
+        self.set_sw_if_index(r.sw_if_index)
+        self.test.registry.register(self, self.test.logger)
+        return self
+
+    def remove_vpp_config(self):
+        self.test.vapi.wireguard_interface_delete(
+            sw_if_index=self._sw_if_index)
+
+    def query_vpp_config(self):
+        ts = self.test.vapi.wireguard_interface_dump(sw_if_index=0xffffffff)
+        for t in ts:
+            if t.interface.sw_if_index == self._sw_if_index and \
+               str(t.interface.src_ip) == self.src and \
+               t.interface.port == self.port and \
+               t.interface.private_key == private_key_bytes(self.private_key):
+                return True
+        return False
+
+    def __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return "wireguard-%d" % self._sw_if_index
+
+
+def find_route(test, prefix, table_id=0):
+    routes = test.vapi.ip_route_dump(table_id, False)
+
+    for e in routes:
+        if table_id == e.route.table_id \
+           and str(e.route.prefix) == str(prefix):
+            return True
+    return False
+
+
+NOISE_HANDSHAKE_NAME = b"Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s"
+NOISE_IDENTIFIER_NAME = b"WireGuard v1 zx2c4 Jason@zx2c4.com"
+
+
+class VppWgPeer(VppObject):
+
+    def __init__(self,
+                 test,
+                 itf,
+                 endpoint,
+                 port,
+                 allowed_ips,
+                 persistent_keepalive=15):
+        self._test = test
+        self.itf = itf
+        self.endpoint = endpoint
+        self.port = port
+        self.allowed_ips = allowed_ips
+        self.persistent_keepalive = persistent_keepalive
+
+        # remote peer's public
+        self.private_key = X25519PrivateKey.generate()
+        self.public_key = self.private_key.public_key()
+
+        self.noise = NoiseConnection.from_name(NOISE_HANDSHAKE_NAME)
+
+    def validate_routing(self):
+        for a in self.allowed_ips:
+            self._test.assertTrue(find_route(self._test, a))
+
+    def validate_no_routing(self):
+        for a in self.allowed_ips:
+            self._test.assertFalse(find_route(self._test, a))
+
+    def add_vpp_config(self):
+        rv = self._test.vapi.wireguard_peer_add(
+            peer={
+                'public_key': self.public_key_bytes(),
+                'port': self.port,
+                'endpoint': self.endpoint,
+                'n_allowed_ips': len(self.allowed_ips),
+                'allowed_ips': self.allowed_ips,
+                'sw_if_index': self.itf.sw_if_index,
+                'persistent_keepalive': self.persistent_keepalive})
+        self.index = rv.peer_index
+        self.receiver_index = self.index + 1
+        self._test.registry.register(self, self._test.logger)
+        self.validate_routing()
+        return self
+
+    def remove_vpp_config(self):
+        self._test.vapi.wireguard_peer_remove(peer_index=self.index)
+        self.validate_no_routing()
+
+    def object_id(self):
+        return ("wireguard-peer-%s" % self.index)
+
+    def public_key_bytes(self):
+        return public_key_bytes(self.public_key)
+
+    def query_vpp_config(self):
+        peers = self._test.vapi.wireguard_peers_dump()
+
+        for p in peers:
+            if p.peer.public_key == self.public_key_bytes() and \
+               p.peer.port == self.port and \
+               str(p.peer.endpoint) == self.endpoint and \
+               p.peer.sw_if_index == self.itf.sw_if_index and \
+               len(self.allowed_ips) == p.peer.n_allowed_ips:
+                self.allowed_ips.sort()
+                p.peer.allowed_ips.sort()
+
+                for (a1, a2) in zip(self.allowed_ips, p.peer.allowed_ips):
+                    if str(a1) != str(a2):
+                        return False
+                return True
+        return False
+
+    def set_responder(self):
+        self.noise.set_as_responder()
+
+    def mk_tunnel_header(self, tx_itf):
+        return (Ether(dst=tx_itf.local_mac, src=tx_itf.remote_mac) /
+                IP(src=self.endpoint, dst=self.itf.src) /
+                UDP(sport=self.port, dport=self.itf.port))
+
+    def noise_init(self, public_key=None):
+        self.noise.set_prologue(NOISE_IDENTIFIER_NAME)
+        self.noise.set_psks(psk=bytes(bytearray(32)))
+
+        if not public_key:
+            public_key = self.itf.public_key
+
+        # local/this private
+        self.noise.set_keypair_from_private_bytes(
+            Keypair.STATIC,
+            private_key_bytes(self.private_key))
+        # remote's public
+        self.noise.set_keypair_from_public_bytes(
+            Keypair.REMOTE_STATIC,
+            public_key_bytes(public_key))
+
+        self.noise.start_handshake()
+
+    def mk_handshake(self, tx_itf, public_key=None):
+        self.noise.set_as_initiator()
+        self.noise_init(public_key)
+
+        p = (Wireguard() / WireguardInitiation())
+
+        p[Wireguard].message_type = 1
+        p[Wireguard].reserved_zero = 0
+        p[WireguardInitiation].sender_index = self.receiver_index
+
+        # some random data for the message
+        #  lifted from the noise protocol's wireguard example
+        now = datetime.datetime.now()
+        tai = struct.pack('!qi', 4611686018427387914 + int(now.timestamp()),
+                          int(now.microsecond * 1e3))
+        b = self.noise.write_message(payload=tai)
+
+        # load noise into init message
+        p[WireguardInitiation].unencrypted_ephemeral = b[0:32]
+        p[WireguardInitiation].encrypted_static = b[32:80]
+        p[WireguardInitiation].encrypted_timestamp = b[80:108]
+
+        # generate the mac1 hash
+        mac_key = blake2s(b'mac1----' +
+                          self.itf.public_key_bytes()).digest()
+        p[WireguardInitiation].mac1 = blake2s(bytes(p)[0:116],
+                                              digest_size=16,
+                                              key=mac_key).digest()
+        p[WireguardInitiation].mac2 = bytearray(16)
+
+        p = (self.mk_tunnel_header(tx_itf) / p)
+
+        return p
+
+    def verify_header(self, p):
+        self._test.assertEqual(p[IP].src, self.itf.src)
+        self._test.assertEqual(p[IP].dst, self.endpoint)
+        self._test.assertEqual(p[UDP].sport, self.itf.port)
+        self._test.assertEqual(p[UDP].dport, self.port)
+        self._test.assert_packet_checksums_valid(p)
+
+    def consume_init(self, p, tx_itf):
+        self.noise.set_as_responder()
+        self.noise_init(self.itf.public_key)
+        self.verify_header(p)
+
+        init = Wireguard(p[Raw])
+
+        self._test.assertEqual(init[Wireguard].message_type, 1)
+        self._test.assertEqual(init[Wireguard].reserved_zero, 0)
+
+        self.sender = init[WireguardInitiation].sender_index
+
+        # validate the hash
+        mac_key = blake2s(b'mac1----' +
+                          public_key_bytes(self.public_key)).digest()
+        mac1 = blake2s(bytes(init)[0:-32],
+                       digest_size=16,
+                       key=mac_key).digest()
+        self._test.assertEqual(init[WireguardInitiation].mac1, mac1)
+
+        # this passes only unencrypted_ephemeral, encrypted_static,
+        # encrypted_timestamp fields of the init
+        payload = self.noise.read_message(bytes(init)[8:-32])
+
+        # build the response
+        b = self.noise.write_message()
+        mac_key = blake2s(b'mac1----' +
+                          public_key_bytes(self.itf.public_key)).digest()
+        resp = (Wireguard(message_type=2, reserved_zero=0) /
+                WireguardResponse(sender_index=self.receiver_index,
+                                  receiver_index=self.sender,
+                                  unencrypted_ephemeral=b[0:32],
+                                  encrypted_nothing=b[32:]))
+        mac1 = blake2s(bytes(resp)[:-32],
+                       digest_size=16,
+                       key=mac_key).digest()
+        resp[WireguardResponse].mac1 = mac1
+
+        resp = (self.mk_tunnel_header(tx_itf) / resp)
+        self._test.assertTrue(self.noise.handshake_finished)
+
+        return resp
+
+    def consume_response(self, p):
+        self.verify_header(p)
+
+        resp = Wireguard(p[Raw])
+
+        self._test.assertEqual(resp[Wireguard].message_type, 2)
+        self._test.assertEqual(resp[Wireguard].reserved_zero, 0)
+        self._test.assertEqual(resp[WireguardResponse].receiver_index,
+                               self.receiver_index)
+
+        self.sender = resp[Wireguard].sender_index
+
+        payload = self.noise.read_message(bytes(resp)[12:60])
+        self._test.assertEqual(payload, b'')
+        self._test.assertTrue(self.noise.handshake_finished)
+
+    def decrypt_transport(self, p):
+        self.verify_header(p)
+
+        p = Wireguard(p[Raw])
+        self._test.assertEqual(p[Wireguard].message_type, 4)
+        self._test.assertEqual(p[Wireguard].reserved_zero, 0)
+        self._test.assertEqual(p[WireguardTransport].receiver_index,
+                               self.receiver_index)
+
+        d = self.noise.decrypt(
+            p[WireguardTransport].encrypted_encapsulated_packet)
+        return d
+
+    def encrypt_transport(self, p):
+        return self.noise.encrypt(bytes(p))
+
+    def validate_encapped(self, rxs, tx):
+        for rx in rxs:
+            rx = IP(self.decrypt_transport(rx))
+
+            # chech the oringial packet is present
+            self._test.assertEqual(rx[IP].dst, tx[IP].dst)
+            self._test.assertEqual(rx[IP].ttl, tx[IP].ttl-1)
+
+
+class TestWg(VppTestCase):
+    """ Wireguard Test Case """
+
+    error_str = compile(r"Error")
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestWg, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(3))
+            for i in cls.pg_interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.resolve_arp()
+
+        except Exception:
+            super(TestWg, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestWg, cls).tearDownClass()
+
+    def test_wg_interface(self):
+        """ Simple interface creation """
+        port = 12312
+
+        # Create interface
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh int"))
+
+        # delete interface
+        wg0.remove_vpp_config()
+
+    def test_handshake_hash(self):
+        """ test hashing an init message """
+        # a init packet generated by linux given the key below
+        h = "0100000098b9032b" \
+            "55cc4b39e73c3d24" \
+            "a2a1ab884b524a81" \
+            "1808bb86640fb70d" \
+            "e93154fec1879125" \
+            "ab012624a27f0b75" \
+            "c0a2582f438ddb5f" \
+            "8e768af40b4ab444" \
+            "02f9ff473e1b797e" \
+            "80d39d93c5480c82" \
+            "a3d4510f70396976" \
+            "586fb67300a5167b" \
+            "ae6ca3ff3dfd00eb" \
+            "59be198810f5aa03" \
+            "6abc243d2155ee4f" \
+            "2336483900aef801" \
+            "08752cd700000000" \
+            "0000000000000000" \
+            "00000000"
+
+        b = bytearray.fromhex(h)
+        tgt = Wireguard(b)
+
+        pubb = base64.b64decode("aRuHFTTxICIQNefp05oKWlJv3zgKxb8+WW7JJMh0jyM=")
+        pub = X25519PublicKey.from_public_bytes(pubb)
+
+        self.assertEqual(pubb, public_key_bytes(pub))
+
+        # strip the macs and build a new packet
+        init = b[0:-32]
+        mac_key = blake2s(b'mac1----' + public_key_bytes(pub)).digest()
+        init += blake2s(init,
+                        digest_size=16,
+                        key=mac_key).digest()
+        init += b'\x00' * 16
+
+        act = Wireguard(init)
+
+        self.assertEqual(tgt, act)
+
+    def test_wg_peer_resp(self):
+        """ Send handshake response """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12323
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # wait for the peer to send a handshake
+        rx = self.pg1.get_capture(1, timeout=2)
+
+        # consume the handshake in the noise protocol and
+        # generate the response
+        resp = peer_1.consume_init(rx[0], self.pg1)
+
+        # send the response, get keepalive
+        rxs = self.send_and_expect(self.pg1, [resp], self.pg1)
+
+        for rx in rxs:
+            b = peer_1.decrypt_transport(rx)
+            self.assertEqual(0, len(b))
+
+        # send a packets that are routed into the tunnel
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw(b'\x00' * 80))
+
+        rxs = self.send_and_expect(self.pg0, p * 255, self.pg1)
+
+        peer_1.validate_encapped(rxs, p)
+
+        # send packets into the tunnel, expect to receive them on
+        # the other side
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+    def test_wg_peer_init(self):
+        """ Send handshake init """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12333
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # route a packet into the wg interface
+        #  use the allowed-ip prefix
+        #  this is dropped because the peer is not initiated
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw())
+        self.send_and_assert_no_replies(self.pg0, [p])
+
+        kp_error = wg_output_node_name + "Keypair error"
+        self.assertEqual(1, self.statistics.get_err_counter(kp_error))
+
+        # send a handsake from the peer with an invalid MAC
+        p = peer_1.mk_handshake(self.pg1)
+        p[WireguardInitiation].mac1 = b'foobar'
+        self.send_and_assert_no_replies(self.pg1, [p])
+        self.assertEqual(1, self.statistics.get_err_counter(
+            wg_input_node_name + "Invalid MAC handshake"))
+
+        # send a handsake from the peer but signed by the wrong key.
+        p = peer_1.mk_handshake(self.pg1,
+                                X25519PrivateKey.generate().public_key())
+        self.send_and_assert_no_replies(self.pg1, [p])
+        self.assertEqual(1, self.statistics.get_err_counter(
+            wg_input_node_name + "Peer error"))
+
+        # send a valid handsake init for which we expect a response
+        p = peer_1.mk_handshake(self.pg1)
+
+        rx = self.send_and_expect(self.pg1, [p], self.pg1)
+
+        peer_1.consume_response(rx[0])
+
+        # route a packet into the wg interface
+        #  this is dropped because the peer is still not initiated
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw())
+        self.send_and_assert_no_replies(self.pg0, [p])
+        self.assertEqual(2, self.statistics.get_err_counter(kp_error))
+
+        # send a data packet from the peer through the tunnel
+        # this completes the handshake
+        p = (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+             UDP(sport=222, dport=223) /
+             Raw())
+        d = peer_1.encrypt_transport(p)
+        p = (peer_1.mk_tunnel_header(self.pg1) /
+             (Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(receiver_index=peer_1.sender,
+                                 counter=0,
+                                 encrypted_encapsulated_packet=d)))
+        rxs = self.send_and_expect(self.pg1, [p], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw(b'\x00' * 80))
+
+        rxs = self.send_and_expect(self.pg0, p * 255, self.pg1)
+
+        for rx in rxs:
+            rx = IP(peer_1.decrypt_transport(rx))
+
+            # chech the oringial packet is present
+            self.assertEqual(rx[IP].dst, p[IP].dst)
+            self.assertEqual(rx[IP].ttl, p[IP].ttl-1)
+
+        # send packets into the tunnel, expect to receive them on
+        # the other side
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii+1,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        peer_1.remove_vpp_config()
+        wg0.remove_vpp_config()
+
+    def test_wg_multi_peer(self):
+        """ multiple peer setup """
+        port = 12343
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg1 = VppWgInterface(self,
+                             self.pg2.local_ip4,
+                             port+1).add_vpp_config()
+        wg0.admin_up()
+        wg1.admin_up()
+
+        # Check peer counter
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 0)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Create many peers on sencond interface
+        NUM_PEERS = 16
+        self.pg2.generate_remote_hosts(NUM_PEERS)
+        self.pg2.configure_ipv4_neighbors()
+        self.pg1.generate_remote_hosts(NUM_PEERS)
+        self.pg1.configure_ipv4_neighbors()
+
+        peers_1 = []
+        peers_2 = []
+        for i in range(NUM_PEERS):
+            peers_1.append(VppWgPeer(self,
+                                     wg0,
+                                     self.pg1.remote_hosts[i].ip4,
+                                     port+1+i,
+                                     ["10.0.%d.4/32" % i]).add_vpp_config())
+            peers_2.append(VppWgPeer(self,
+                                     wg1,
+                                     self.pg2.remote_hosts[i].ip4,
+                                     port+100+i,
+                                     ["10.100.%d.4/32" % i]).add_vpp_config())
+
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), NUM_PEERS*2)
+
+        self.logger.info(self.vapi.cli("show wireguard peer"))
+        self.logger.info(self.vapi.cli("show wireguard interface"))
+        self.logger.info(self.vapi.cli("show adj 37"))
+        self.logger.info(self.vapi.cli("sh ip fib 172.16.3.17"))
+        self.logger.info(self.vapi.cli("sh ip fib 10.11.3.0"))
+
+        # remove peers
+        for p in peers_1:
+            self.assertTrue(p.query_vpp_config())
+            p.remove_vpp_config()
+        for p in peers_2:
+            self.assertTrue(p.query_vpp_config())
+            p.remove_vpp_config()
+
+        wg0.remove_vpp_config()
+        wg1.remove_vpp_config()
+
+
+class WireguardHandoffTests(TestWg):
+    """ Wireguard Tests in multi worker setup """
+    vpp_worker_count = 2
+
+    def test_wg_peer_init(self):
+        """ Handoff """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12353
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # send a valid handsake init for which we expect a response
+        p = peer_1.mk_handshake(self.pg1)
+
+        rx = self.send_and_expect(self.pg1, [p], self.pg1)
+
+        peer_1.consume_response(rx[0])
+
+        # send a data packet from the peer through the tunnel
+        # this completes the handshake and pins the peer to worker 0
+        p = (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+             UDP(sport=222, dport=223) /
+             Raw())
+        d = peer_1.encrypt_transport(p)
+        p = (peer_1.mk_tunnel_header(self.pg1) /
+             (Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(receiver_index=peer_1.sender,
+                                 counter=0,
+                                 encrypted_encapsulated_packet=d)))
+        rxs = self.send_and_expect(self.pg1, [p], self.pg0,
+                                   worker=0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        # and pins the peer tp worker 1
+        pe = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+              UDP(sport=555, dport=556) /
+              Raw(b'\x00' * 80))
+        rxs = self.send_and_expect(self.pg0, pe * 255, self.pg1, worker=1)
+        peer_1.validate_encapped(rxs, pe)
+
+        # send packets into the tunnel, from the other worker
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii+1,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0, worker=1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        # from owrker 0
+        rxs = self.send_and_expect(self.pg0, pe * 255, self.pg1, worker=0)
+
+        peer_1.validate_encapped(rxs, pe)
+
+        peer_1.remove_vpp_config()
+        wg0.remove_vpp_config()
diff --git a/test/vpp_acl.py b/test/vpp_acl.py
new file mode 100644
index 0000000..2d2f7ca
--- /dev/null
+++ b/test/vpp_acl.py
@@ -0,0 +1,476 @@
+from ipaddress import IPv4Network
+
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+from vpp_ip import INVALID_INDEX
+from vpp_papi_provider import UnexpectedApiReturnValueError
+
+
+class VppAclPlugin(VppObject):
+
+    def __init__(self, test, enable_intf_counters=False):
+        self._test = test
+        self.enable_intf_counters = enable_intf_counters
+
+    @property
+    def enable_intf_counters(self):
+        return self._enable_intf_counters
+
+    @enable_intf_counters.setter
+    def enable_intf_counters(self, enable):
+        self.vapi.acl_stats_intf_counters_enable(enable=enable)
+
+    def add_vpp_config(self):
+        pass
+
+    def remove_vpp_config(self):
+        pass
+
+    def query_vpp_config(self):
+        pass
+
+    def object_id(self):
+        return ("acl-plugin-%d" % (self._sw_if_index))
+
+
+class AclRule():
+    """ ACL Rule """
+
+    # port ranges
+    PORTS_ALL = -1
+    PORTS_RANGE = 0
+    PORTS_RANGE_2 = 1
+    udp_sport_from = 10
+    udp_sport_to = udp_sport_from + 5
+    udp_dport_from = 20000
+    udp_dport_to = udp_dport_from + 5000
+    tcp_sport_from = 30
+    tcp_sport_to = tcp_sport_from + 5
+    tcp_dport_from = 40000
+    tcp_dport_to = tcp_dport_from + 5000
+
+    udp_sport_from_2 = 90
+    udp_sport_to_2 = udp_sport_from_2 + 5
+    udp_dport_from_2 = 30000
+    udp_dport_to_2 = udp_dport_from_2 + 5000
+    tcp_sport_from_2 = 130
+    tcp_sport_to_2 = tcp_sport_from_2 + 5
+    tcp_dport_from_2 = 20000
+    tcp_dport_to_2 = tcp_dport_from_2 + 5000
+
+    icmp4_type = 8  # echo request
+    icmp4_code = 3
+    icmp6_type = 128  # echo request
+    icmp6_code = 3
+
+    icmp4_type_2 = 8
+    icmp4_code_from_2 = 5
+    icmp4_code_to_2 = 20
+    icmp6_type_2 = 128
+    icmp6_code_from_2 = 8
+    icmp6_code_to_2 = 42
+
+    def __init__(self, is_permit, src_prefix=IPv4Network('0.0.0.0/0'),
+                 dst_prefix=IPv4Network('0.0.0.0/0'),
+                 proto=0, ports=PORTS_ALL, sport_from=None, sport_to=None,
+                 dport_from=None, dport_to=None):
+        self.is_permit = is_permit
+        self.src_prefix = src_prefix
+        self.dst_prefix = dst_prefix
+        self._proto = proto
+        self._ports = ports
+        # assign ports by range
+        self.update_ports()
+        # assign specified ports
+        if sport_from:
+            self.sport_from = sport_from
+        if sport_to:
+            self.sport_to = sport_to
+        if dport_from:
+            self.dport_from = dport_from
+        if dport_to:
+            self.dport_to = dport_to
+
+    def __copy__(self):
+        new_rule = AclRule(self.is_permit, self.src_prefix, self.dst_prefix,
+                           self._proto, self._ports, self.sport_from,
+                           self.sport_to, self.dport_from, self.dport_to)
+        return new_rule
+
+    def update_ports(self):
+        if self._ports == self.PORTS_ALL:
+            self.sport_from = 0
+            self.dport_from = 0
+            self.sport_to = 65535
+            if self._proto == 1 or self._proto == 58:
+                self.sport_to = 255
+            self.dport_to = self.sport_to
+        elif self._ports == self.PORTS_RANGE:
+            if self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_ICMP:
+                self.sport_from = self.icmp4_type
+                self.sport_to = self.icmp4_type
+                self.dport_from = self.icmp4_code
+                self.dport_to = self.icmp4_code
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_ICMP6:
+                self.sport_from = self.icmp6_type
+                self.sport_to = self.icmp6_type
+                self.dport_from = self.icmp6_code
+                self.dport_to = self.icmp6_code
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_TCP:
+                self.sport_from = self.tcp_sport_from
+                self.sport_to = self.tcp_sport_to
+                self.dport_from = self.tcp_dport_from
+                self.dport_to = self.tcp_dport_to
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP:
+                self.sport_from = self.udp_sport_from
+                self.sport_to = self.udp_sport_to
+                self.dport_from = self.udp_dport_from
+                self.dport_to = self.udp_dport_to
+        elif self._ports == self.PORTS_RANGE_2:
+            if self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_ICMP:
+                self.sport_from = self.icmp4_type_2
+                self.sport_to = self.icmp4_type_2
+                self.dport_from = self.icmp4_code_from_2
+                self.dport_to = self.icmp4_code_to_2
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_ICMP6:
+                self.sport_from = self.icmp6_type_2
+                self.sport_to = self.icmp6_type_2
+                self.dport_from = self.icmp6_code_from_2
+                self.dport_to = self.icmp6_code_to_2
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_TCP:
+                self.sport_from = self.tcp_sport_from_2
+                self.sport_to = self.tcp_sport_to_2
+                self.dport_from = self.tcp_dport_from_2
+                self.dport_to = self.tcp_dport_to_2
+            elif self._proto == VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP:
+                self.sport_from = self.udp_sport_from_2
+                self.sport_to = self.udp_sport_to_2
+                self.dport_from = self.udp_dport_from_2
+                self.dport_to = self.udp_dport_to_2
+        else:
+            self.sport_from = self._ports
+            self.sport_to = self._ports
+            self.dport_from = self._ports
+            self.dport_to = self._ports
+
+    @property
+    def proto(self):
+        return self._proto
+
+    @proto.setter
+    def proto(self, proto):
+        self._proto = proto
+        self.update_ports()
+
+    @property
+    def ports(self):
+        return self._ports
+
+    @ports.setter
+    def ports(self, ports):
+        self._ports = ports
+        self.update_ports()
+
+    def encode(self):
+        return {'is_permit': self.is_permit, 'proto': self.proto,
+                'srcport_or_icmptype_first': self.sport_from,
+                'srcport_or_icmptype_last': self.sport_to,
+                'src_prefix': self.src_prefix,
+                'dstport_or_icmpcode_first': self.dport_from,
+                'dstport_or_icmpcode_last': self.dport_to,
+                'dst_prefix': self.dst_prefix}
+
+
+class VppAcl(VppObject):
+    """ VPP ACL """
+
+    def __init__(self, test, rules, acl_index=INVALID_INDEX, tag=None):
+        self._test = test
+        self._acl_index = acl_index
+        self.tag = tag
+        self._rules = rules
+
+    @property
+    def rules(self):
+        return self._rules
+
+    @property
+    def acl_index(self):
+        return self._acl_index
+
+    @property
+    def count(self):
+        return len(self._rules)
+
+    def encode_rules(self):
+        rules = []
+        for rule in self._rules:
+            rules.append(rule.encode())
+        return rules
+
+    def add_vpp_config(self, expect_error=False):
+        try:
+            reply = self._test.vapi.acl_add_replace(
+                acl_index=self._acl_index, tag=self.tag, count=self.count,
+                r=self.encode_rules())
+            self._acl_index = reply.acl_index
+            self._test.registry.register(self, self._test.logger)
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+            return self
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+        return None
+
+    def modify_vpp_config(self, rules):
+        self._rules = rules
+        self.add_vpp_config()
+
+    def remove_vpp_config(self, expect_error=False):
+        try:
+            self._test.vapi.acl_del(acl_index=self._acl_index)
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+
+    def dump(self):
+        return self._test.vapi.acl_dump(acl_index=self._acl_index)
+
+    def query_vpp_config(self):
+        dump = self.dump()
+        for rule in dump:
+            if rule.acl_index == self._acl_index:
+                return True
+        return False
+
+    def object_id(self):
+        return ("acl-%s-%d" % (self.tag, self._acl_index))
+
+
+class VppEtypeWhitelist(VppObject):
+    """ VPP Etype Whitelist """
+
+    def __init__(self, test, sw_if_index, whitelist, n_input=0):
+        self._test = test
+        self.whitelist = whitelist
+        self.n_input = n_input
+        self._sw_if_index = sw_if_index
+
+    @property
+    def sw_if_index(self):
+        return self._sw_if_index
+
+    @property
+    def count(self):
+        return len(self.whitelist)
+
+    def add_vpp_config(self):
+        self._test.vapi.acl_interface_set_etype_whitelist(
+            sw_if_index=self._sw_if_index, count=self.count,
+            n_input=self.n_input, whitelist=self.whitelist)
+        self._test.registry.register(self, self._test.logger)
+        return self
+
+    def remove_vpp_config(self):
+        self._test.vapi.acl_interface_set_etype_whitelist(
+            sw_if_index=self._sw_if_index, count=0, n_input=0, whitelist=[])
+
+    def query_vpp_config(self):
+        self._test.vapi.acl_interface_etype_whitelist_dump(
+            sw_if_index=self._sw_if_index)
+        return False
+
+    def object_id(self):
+        return ("acl-etype_wl-%d" % (self._sw_if_index))
+
+
+class VppAclInterface(VppObject):
+    """ VPP ACL Interface """
+
+    def __init__(self, test, sw_if_index, acls, n_input=0):
+        self._test = test
+        self._sw_if_index = sw_if_index
+        self.n_input = n_input
+        self.acls = acls
+
+    @property
+    def sw_if_index(self):
+        return self._sw_if_index
+
+    @property
+    def count(self):
+        return len(self.acls)
+
+    def encode_acls(self):
+        acls = []
+        for acl in self.acls:
+            acls.append(acl.acl_index)
+        return acls
+
+    def add_vpp_config(self, expect_error=False):
+        try:
+            reply = self._test.vapi.acl_interface_set_acl_list(
+                sw_if_index=self._sw_if_index, n_input=self.n_input,
+                count=self.count, acls=self.encode_acls())
+            self._test.registry.register(self, self._test.logger)
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+            return self
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+        return None
+
+    def remove_vpp_config(self, expect_error=False):
+        try:
+            reply = self._test.vapi.acl_interface_set_acl_list(
+                sw_if_index=self._sw_if_index, n_input=0, count=0, acls=[])
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+
+    def query_vpp_config(self):
+        dump = self._test.vapi.acl_interface_list_dump(
+            sw_if_index=self._sw_if_index)
+        for acl_list in dump:
+            if acl_list.count > 0:
+                return True
+        return False
+
+    def object_id(self):
+        return ("acl-if-list-%d" % (self._sw_if_index))
+
+
+class MacipRule():
+    """ Mac Ip rule """
+
+    def __init__(self, is_permit, src_mac=0, src_mac_mask=0,
+                 src_prefix=IPv4Network('0.0.0.0/0')):
+        self.is_permit = is_permit
+        self.src_mac = src_mac
+        self.src_mac_mask = src_mac_mask
+        self.src_prefix = src_prefix
+
+    def encode(self):
+        return {'is_permit': self.is_permit, 'src_mac': self.src_mac,
+                'src_mac_mask': self.src_mac_mask,
+                'src_prefix': self.src_prefix}
+
+
+class VppMacipAcl(VppObject):
+    """ Vpp Mac Ip ACL """
+
+    def __init__(self, test, rules, acl_index=INVALID_INDEX, tag=None):
+        self._test = test
+        self._acl_index = acl_index
+        self.tag = tag
+        self._rules = rules
+
+    @property
+    def acl_index(self):
+        return self._acl_index
+
+    @property
+    def rules(self):
+        return self._rules
+
+    @property
+    def count(self):
+        return len(self._rules)
+
+    def encode_rules(self):
+        rules = []
+        for rule in self._rules:
+            rules.append(rule.encode())
+        return rules
+
+    def add_vpp_config(self, expect_error=False):
+        try:
+            reply = self._test.vapi.macip_acl_add_replace(
+                acl_index=self._acl_index, tag=self.tag, count=self.count,
+                r=self.encode_rules())
+            self._acl_index = reply.acl_index
+            self._test.registry.register(self, self._test.logger)
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+            return self
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+        return None
+
+    def modify_vpp_config(self, rules):
+        self._rules = rules
+        self.add_vpp_config()
+
+    def remove_vpp_config(self, expect_error=False):
+        try:
+            self._test.vapi.macip_acl_del(acl_index=self._acl_index)
+            if expect_error:
+                self._test.fail("Unexpected api reply")
+        except UnexpectedApiReturnValueError:
+            if not expect_error:
+                self._test.fail("Unexpected api reply")
+
+    def dump(self):
+        return self._test.vapi.macip_acl_dump(acl_index=self._acl_index)
+
+    def query_vpp_config(self):
+        dump = self.dump()
+        for rule in dump:
+            if rule.acl_index == self._acl_index:
+                return True
+        return False
+
+    def object_id(self):
+        return ("macip-acl-%s-%d" % (self.tag, self._acl_index))
+
+
+class VppMacipAclInterface(VppObject):
+    """ VPP Mac Ip ACL Interface """
+
+    def __init__(self, test, sw_if_index, acls):
+        self._test = test
+        self._sw_if_index = sw_if_index
+        self.acls = acls
+
+    @property
+    def sw_if_index(self):
+        return self._sw_if_index
+
+    @property
+    def count(self):
+        return len(self.acls)
+
+    def add_vpp_config(self):
+        for acl in self.acls:
+            self._test.vapi.macip_acl_interface_add_del(
+                is_add=True, sw_if_index=self._sw_if_index,
+                acl_index=acl.acl_index)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        for acl in self.acls:
+            self._test.vapi.macip_acl_interface_add_del(
+                is_add=False, sw_if_index=self._sw_if_index,
+                acl_index=acl.acl_index)
+
+    def dump(self):
+        return self._test.vapi.macip_acl_interface_list_dump(
+            sw_if_index=self._sw_if_index)
+
+    def query_vpp_config(self):
+        dump = self.dump()
+        for acl_list in dump:
+            for acl_index in acl_list.acls:
+                if acl_index != INVALID_INDEX:
+                    return True
+        return False
+
+    def object_id(self):
+        return ("macip-acl-if-list-%d" % (self._sw_if_index))
diff --git a/test/vpp_bier.py b/test/vpp_bier.py
new file mode 100644
index 0000000..6e087a8
--- /dev/null
+++ b/test/vpp_bier.py
@@ -0,0 +1,293 @@
+"""
+  BIER Tables and Routes
+"""
+
+import socket
+from vpp_object import VppObject
+from vpp_ip_route import MPLS_LABEL_INVALID, VppRoutePath, VppMplsLabel
+
+
+class BIER_HDR_PAYLOAD:
+    BIER_HDR_PROTO_MPLS_DOWN_STREAM = 1
+    BIER_HDR_PROTO_MPLS_UP_STREAM = 2
+    BIER_HDR_PROTO_ETHERNET = 3
+    BIER_HDR_PROTO_IPV4 = 4
+    BIER_HDR_PROTO_IPV6 = 5
+    BIER_HDR_PROTO_VXLAN = 6
+    BIER_HDR_PROTO_CTRL = 7
+    BIER_HDR_PROTO_OAM = 8
+
+
+class VppBierTableID():
+    def __init__(self, sub_domain_id, set_id, hdr_len_id):
+        self.set_id = set_id
+        self.sub_domain_id = sub_domain_id
+        self.hdr_len_id = hdr_len_id
+
+
+def find_bier_table(test, bti):
+    tables = test.vapi.bier_table_dump()
+    for t in tables:
+        if bti.set_id == t.bt_tbl_id.bt_set \
+           and bti.sub_domain_id == t.bt_tbl_id.bt_sub_domain \
+           and bti.hdr_len_id == t.bt_tbl_id.bt_hdr_len_id:
+            return True
+    return False
+
+
+def find_bier_route(test, bti, bp):
+    routes = test.vapi.bier_route_dump(bti)
+    for r in routes:
+        if bti.set_id == r.br_route.br_tbl_id.bt_set \
+           and bti.sub_domain_id == r.br_route.br_tbl_id.bt_sub_domain \
+           and bti.hdr_len_id == r.br_route.br_tbl_id.bt_hdr_len_id \
+           and bp == r.br_route.br_bp:
+            return True
+    return False
+
+
+def find_bier_disp_table(test, bdti):
+    tables = test.vapi.bier_disp_table_dump()
+    for t in tables:
+        if bdti == t.bdt_tbl_id:
+            return True
+    return False
+
+
+def find_bier_disp_entry(test, bdti, bp):
+    entries = test.vapi.bier_disp_entry_dump(bdti)
+    for e in entries:
+        if bp == e.bde_bp \
+           and bdti == e.bde_tbl_id:
+            return True
+    return False
+
+
+def find_bier_imp(test, bti, bp):
+    imps = test.vapi.bier_imp_dump()
+    for i in imps:
+        if bti.set_id == i.bi_tbl_id.bt_set \
+           and bti.sub_domain_id == i.bi_tbl_id.bt_sub_domain \
+           and bti.hdr_len_id == i.bi_tbl_id.bt_hdr_len_id \
+           and bp == i.bi_src:
+            return True
+    return False
+
+
+class VppBierTable(VppObject):
+    """
+    BIER Table
+    """
+
+    def __init__(self, test, id, mpls_label):
+        self._test = test
+        self.id = id
+        self.mpls_label = mpls_label
+
+    def add_vpp_config(self):
+        self._test.vapi.bier_table_add_del(
+            self.id,
+            self.mpls_label,
+            is_add=1)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.bier_table_add_del(
+            self.id,
+            self.mpls_label,
+            is_add=0)
+
+    def object_id(self):
+        return "bier-table;[%d:%d:%d]" % (self.id.set_id,
+                                          self.id.sub_domain_id,
+                                          self.id.hdr_len_id)
+
+    def query_vpp_config(self):
+        return find_bier_table(self._test, self.id)
+
+
+class VppBierRoute(VppObject):
+    """
+    BIER route
+    """
+
+    def __init__(self, test, tbl_id, bp, paths):
+        self._test = test
+        self.tbl_id = tbl_id
+        self.bp = bp
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+
+    def add_vpp_config(self):
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            self.encoded_paths,
+            is_add=1)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            self.encoded_paths,
+            is_add=0)
+
+    def update_paths(self, paths):
+        self.paths = paths
+        self.encoded_paths = []
+        for path in self.paths:
+            self.encoded_paths.append(path.encode())
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            self.encoded_paths,
+            is_replace=1)
+
+    def add_path(self, path):
+        self.encoded_paths.append(path.encode())
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            [path.encode()],
+            is_add=1,
+            is_replace=0)
+        self.paths.append(path)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_path(self, path):
+        self.encoded_paths.remove(path.encode())
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            [path.encode()],
+            is_add=0,
+            is_replace=0)
+        self.paths.remove(path)
+
+    def remove_all_paths(self):
+        self._test.vapi.bier_route_add_del(
+            self.tbl_id,
+            self.bp,
+            [],
+            is_add=0,
+            is_replace=1)
+        self.paths = []
+
+    def object_id(self):
+        return "bier-route;[%d:%d:%d:%d]" % (self.tbl_id.set_id,
+                                             self.tbl_id.sub_domain_id,
+                                             self.tbl_id.hdr_len_id,
+                                             self.bp)
+
+    def query_vpp_config(self):
+        return find_bier_route(self._test, self.tbl_id, self.bp)
+
+
+class VppBierImp(VppObject):
+    """
+    BIER route
+    """
+
+    def __init__(self, test, tbl_id, src, ibytes):
+        self._test = test
+        self.tbl_id = tbl_id
+        self.ibytes = ibytes
+        self.src = src
+
+    def add_vpp_config(self):
+        res = self._test.vapi.bier_imp_add(
+            self.tbl_id,
+            self.src,
+            self.ibytes)
+        self.bi_index = res.bi_index
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.bier_imp_del(
+            self.bi_index)
+
+    def object_id(self):
+        return "bier-imp;[%d:%d:%d:%d]" % (self.tbl_id.set_id,
+                                           self.tbl_id.sub_domain_id,
+                                           self.tbl_id.hdr_len_id,
+                                           self.src)
+
+    def query_vpp_config(self):
+        return find_bier_imp(self._test, self.tbl_id, self.src)
+
+
+class VppBierDispTable(VppObject):
+    """
+    BIER Disposition Table
+    """
+
+    def __init__(self, test, id):
+        self._test = test
+        self.id = id
+
+    def add_vpp_config(self):
+        self._test.vapi.bier_disp_table_add_del(
+            self.id,
+            is_add=1)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.bier_disp_table_add_del(
+            self.id,
+            is_add=0)
+
+    def object_id(self):
+        return "bier-disp-table;[%d]" % (self.id)
+
+    def query_vpp_config(self):
+        return find_bier_disp_table(self._test, self.id)
+
+
+class VppBierDispEntry(VppObject):
+    """
+    BIER Disposition Entry
+    """
+
+    def __init__(self, test, tbl_id, bp, payload_proto, nh_proto,
+                 nh, nh_tbl, rpf_id=~0):
+        self._test = test
+        self.tbl_id = tbl_id
+        self.nh_tbl = nh_tbl
+        self.nh_proto = nh_proto
+        self.bp = bp
+        self.payload_proto = payload_proto
+        self.rpf_id = rpf_id
+        self.nh = socket.inet_pton(socket.AF_INET, nh)
+
+    def add_vpp_config(self):
+        self._test.vapi.bier_disp_entry_add_del(
+            self.tbl_id,
+            self.bp,
+            self.payload_proto,
+            self.nh_proto,
+            self.nh,
+            self.nh_tbl,
+            self.rpf_id,
+            is_add=1)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.bier_disp_entry_add_del(
+            self.tbl_id,
+            self.bp,
+            self.payload_proto,
+            self.nh_proto,
+            self.nh,
+            self.nh_tbl,
+            self.rpf_id,
+            is_add=0)
+
+    def object_id(self):
+        return "bier-disp-entry;[%d:%d]" % (self.tbl_id,
+                                            self.bp)
+
+    def query_vpp_config(self):
+        return find_bier_disp_entry(self._test, self.tbl_id, self.bp)
diff --git a/test/vpp_bond_interface.py b/test/vpp_bond_interface.py
new file mode 100644
index 0000000..60c1ac1
--- /dev/null
+++ b/test/vpp_bond_interface.py
@@ -0,0 +1,52 @@
+from vpp_object import VppObject
+from vpp_interface import VppInterface
+
+
+class VppBondInterface(VppInterface):
+    """VPP bond interface."""
+
+    def __init__(self, test, mode, lb=0, numa_only=0, enable_gso=0,
+                 use_custom_mac=0, mac_address='', id=0xFFFFFFFF):
+
+        """ Create VPP Bond interface """
+        super(VppBondInterface, self).__init__(test)
+        self.mode = mode
+        self.lb = lb
+        self.numa_only = numa_only
+        self.enable_gso = enable_gso
+        self.use_custom_mac = use_custom_mac
+        self.mac_address = mac_address
+        self.id = id
+
+    def add_vpp_config(self):
+        r = self.test.vapi.bond_create2(self.mode,
+                                        self.lb,
+                                        self.numa_only,
+                                        self.enable_gso,
+                                        self.use_custom_mac,
+                                        self.mac_address,
+                                        self.id)
+        self.set_sw_if_index(r.sw_if_index)
+
+    def remove_vpp_config(self):
+        self.test.vapi.bond_delete(self.sw_if_index)
+
+    def add_member_vpp_bond_interface(self,
+                                      sw_if_index,
+                                      is_passive=0,
+                                      is_long_timeout=0):
+        self.test.vapi.bond_add_member(sw_if_index,
+                                       self.sw_if_index,
+                                       is_passive,
+                                       is_long_timeout)
+
+    def detach_vpp_bond_interface(self,
+                                  sw_if_index):
+        self.test.vapi.bond_detach_member(sw_if_index)
+
+    def is_interface_config_in_dump(self, dump):
+        for i in dump:
+            if i.sw_if_index == self.sw_if_index:
+                return True
+        else:
+            return False
diff --git a/test/vpp_dhcp.py b/test/vpp_dhcp.py
new file mode 100644
index 0000000..f8265a2
--- /dev/null
+++ b/test/vpp_dhcp.py
@@ -0,0 +1,131 @@
+from vpp_object import VppObject
+
+
+class VppDHCPProxy(VppObject):
+
+    def __init__(
+        self,
+        test,
+        dhcp_server,
+        dhcp_src_address,
+        rx_vrf_id=0,
+        server_vrf_id=0,
+    ):
+        self._test = test
+        self._rx_vrf_id = rx_vrf_id
+        self._server_vrf_id = server_vrf_id
+        self._dhcp_server = dhcp_server
+        self._dhcp_src_address = dhcp_src_address
+
+    def set_proxy(
+            self,
+            dhcp_server,
+            dhcp_src_address,
+            rx_vrf_id=0,
+            server_vrf_id=0):
+        if self.query_vpp_config():
+            raise Exception('Vpp config present')
+        self._rx_vrf_id = rx_vrf_id
+        self._server_vrf_id = server_vrf_id
+        self._dhcp_server = dhcp_server
+        self._dhcp_src_address = dhcp_src_address
+
+    def add_vpp_config(self):
+        self._test.vapi.dhcp_proxy_config(
+            is_add=1,
+            rx_vrf_id=self._rx_vrf_id,
+            server_vrf_id=self._server_vrf_id,
+            dhcp_server=self._dhcp_server,
+            dhcp_src_address=self._dhcp_src_address)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.dhcp_proxy_config(
+            rx_vrf_id=self._rx_vrf_id,
+            server_vrf_id=self._server_vrf_id,
+            dhcp_server=self._dhcp_server,
+            dhcp_src_address=self._dhcp_src_address,
+            is_add=0)
+
+    def get_vpp_dump(self):
+        dump = self._test.vapi.dhcp_proxy_dump()
+        for entry in dump:
+            if entry.rx_vrf_id == self._rx_vrf_id:
+                return entry
+
+    def query_vpp_config(self):
+        dump = self.get_vpp_dump()
+        return True if dump else False
+
+    def object_id(self):
+        return "dhcp-proxy-%d" % self._rx_vrf_id
+
+
+class VppDHCPClient(VppObject):
+
+    def __init__(
+            self,
+            test,
+            sw_if_index,
+            hostname,
+            id=None,
+            want_dhcp_event=False,
+            set_broadcast_flag=True,
+            dscp=None,
+            pid=None):
+        self._test = test
+        self._sw_if_index = sw_if_index
+        self._hostname = hostname
+        self._id = id
+        self._want_dhcp_event = want_dhcp_event
+        self._set_broadcast_flag = set_broadcast_flag
+        self._dscp = dscp
+        self._pid = pid
+
+    def set_client(
+            self,
+            sw_if_index,
+            hostname,
+            id=None,
+            want_dhcp_event=False,
+            set_broadcast_flag=True,
+            dscp=None,
+            pid=None):
+        if self.query_vpp_config():
+            raise Exception('Vpp config present')
+        self._sw_if_index = sw_if_index
+        self._hostname = hostname
+        self._id = id
+        self._want_dhcp_event = want_dhcp_event
+        self._set_broadcast_flag = set_broadcast_flag
+        self._dscp = dscp
+        self._pid = pid
+
+    def add_vpp_config(self):
+        id = self._id.encode('ascii') if self._id else None
+        client = {'sw_if_index': self._sw_if_index, 'hostname': self._hostname,
+                  'id': id,
+                  'want_dhcp_event': self._want_dhcp_event,
+                  'set_broadcast_flag': self._set_broadcast_flag,
+                  'dscp': self._dscp, 'pid': self._pid}
+        self._test.vapi.dhcp_client_config(is_add=1, client=client)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        client = client = {
+            'sw_if_index': self._sw_if_index,
+            'hostname': self._hostname}
+        self._test.vapi.dhcp_client_config(client=client, is_add=0)
+
+    def get_vpp_dump(self):
+        dump = self._test.vapi.dhcp_client_dump()
+        for entry in dump:
+            if entry.client.sw_if_index == self._sw_if_index:
+                return entry
+
+    def query_vpp_config(self):
+        dump = self.get_vpp_dump()
+        return True if dump else False
+
+    def object_id(self):
+        return "dhcp-client-%s/%d" % (self._hostname, self._sw_if_index)
diff --git a/test/vpp_igmp.py b/test/vpp_igmp.py
new file mode 100644
index 0000000..8f78a9b
--- /dev/null
+++ b/test/vpp_igmp.py
@@ -0,0 +1,75 @@
+
+from vpp_object import VppObject
+import socket
+
+
+class IGMP_MODE:
+    ROUTER = 0
+    HOST = 1
+
+
+class IGMP_FILTER:
+    INCLUDE = 1
+    EXCLUDE = 0
+
+
+def find_igmp_state(states, itf, gaddr, saddr):
+    for s in states:
+        if s.sw_if_index == itf.sw_if_index and \
+           str(s.gaddr) == gaddr and str(s.saddr) == saddr:
+            return True
+    return False
+
+
+def wait_for_igmp_event(test, timeout, itf, gaddr, saddr, ff):
+    ev = test.vapi.wait_for_event(timeout, "igmp_event")
+    if ev.sw_if_index == itf.sw_if_index and \
+       str(ev.gaddr) == gaddr and str(ev.saddr) == saddr and \
+       ev.filter == ff:
+        return True
+    return False
+
+
+class IgmpSG():
+    def __init__(self, gaddr, saddrs):
+        self.gaddr = gaddr
+        self.gaddr_p = socket.inet_pton(socket.AF_INET, gaddr)
+        self.saddrs = saddrs
+        self.saddrs_p = []
+        self.saddrs_encoded = []
+        for s in saddrs:
+            ss = socket.inet_pton(socket.AF_INET, s)
+            self.saddrs_p.append(ss)
+            self.saddrs_encoded.append(ss)
+
+
+class IgmpRecord():
+    def __init__(self, sg, type):
+        self.sg = sg
+        self.type = type
+
+
+class VppHostState(VppObject):
+    def __init__(self, test, filter, sw_if_index, sg):
+        self._test = test
+        self.sw_if_index = sw_if_index
+        self.filter = filter
+        self.sg = sg
+
+    def add_vpp_config(self):
+        self._test.vapi.igmp_listen(
+            self.filter, self.sw_if_index,
+            self.sg.saddrs_encoded, self.sg.gaddr_p)
+
+    def remove_vpp_config(self):
+        self._test.vapi.igmp_listen(
+            self.filter,
+            self.sw_if_index,
+            [],
+            self.sg.gaddr_p)
+
+    def object_id(self):
+        return "%s:%d" % (self.sg, self.sw_if_index)
+
+    def query_vpp_config(self):
+        return self._test.vapi.igmp_dump()
diff --git a/test/vpp_ikev2.py b/test/vpp_ikev2.py
new file mode 100644
index 0000000..de20812
--- /dev/null
+++ b/test/vpp_ikev2.py
@@ -0,0 +1,179 @@
+from ipaddress import IPv4Address, AddressValueError
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+
+
+class AuthMethod:
+    v = {'rsa-sig': 1,
+         'shared-key': 2}
+
+    @staticmethod
+    def value(key): return AuthMethod.v[key]
+
+
+class IDType:
+    v = {'ip4-addr': 1,
+         'fqdn': 2,
+         'ip6-addr': 5}
+
+    @staticmethod
+    def value(key): return IDType.v[key]
+
+
+class Profile(VppObject):
+    """ IKEv2 profile """
+    def __init__(self, test, profile_name):
+        self.test = test
+        self.vapi = test.vapi
+        self.profile_name = profile_name
+        self.udp_encap = False
+        self.natt = True
+
+    def disable_natt(self):
+        self.natt = False
+
+    def add_auth(self, method, data, is_hex=False):
+        if isinstance(method, int):
+            m = method
+        elif isinstance(method, str):
+            m = AuthMethod.value(method)
+        else:
+            raise Exception('unsupported type {}'.format(method))
+        self.auth = {'auth_method': m,
+                     'data': data,
+                     'is_hex': is_hex}
+
+    def add_local_id(self, id_type, data):
+        if isinstance(id_type, str):
+            t = IDType.value(id_type)
+        self.local_id = {'id_type': t,
+                         'data': data,
+                         'is_local': True}
+
+    def add_remote_id(self, id_type, data):
+        if isinstance(id_type, str):
+            t = IDType.value(id_type)
+        self.remote_id = {'id_type': t,
+                          'data': data,
+                          'is_local': False}
+
+    def add_local_ts(self, start_addr, end_addr, start_port=0, end_port=0xffff,
+                     proto=0, is_ip4=True):
+        self.ts_is_ip4 = is_ip4
+        self.local_ts = {'is_local': True,
+                         'protocol_id': proto,
+                         'start_port': start_port,
+                         'end_port': end_port,
+                         'start_addr': start_addr,
+                         'end_addr': end_addr}
+
+    def add_remote_ts(self, start_addr, end_addr, start_port=0,
+                      end_port=0xffff, proto=0):
+        try:
+            IPv4Address(start_addr)
+            is_ip4 = True
+        except AddressValueError:
+            is_ip4 = False
+        self.ts_is_ip4 = is_ip4
+        self.remote_ts = {'is_local': False,
+                          'protocol_id': proto,
+                          'start_port': start_port,
+                          'end_port': end_port,
+                          'start_addr': start_addr,
+                          'end_addr': end_addr}
+
+    def add_responder_hostname(self, hn):
+        self.responder_hostname = hn
+
+    def add_responder(self, responder):
+        self.responder = responder
+
+    def add_ike_transforms(self, tr):
+        self.ike_transforms = tr
+
+    def add_esp_transforms(self, tr):
+        self.esp_transforms = tr
+
+    def set_udp_encap(self, udp_encap):
+        self.udp_encap = udp_encap
+
+    def set_lifetime_data(self, data):
+        self.lifetime_data = data
+
+    def set_ipsec_over_udp_port(self, port):
+        self.ipsec_udp_port = {'is_set': 1,
+                               'port': port}
+
+    def set_tunnel_interface(self, sw_if_index):
+        self.tun_itf = sw_if_index
+
+    def object_id(self):
+        return 'ikev2-profile-%s' % self.profile_name
+
+    def remove_vpp_config(self):
+        self.vapi.ikev2_profile_add_del(name=self.profile_name, is_add=False)
+
+    def add_vpp_config(self):
+        self.vapi.ikev2_profile_add_del(name=self.profile_name, is_add=True)
+        if hasattr(self, 'auth'):
+            self.vapi.ikev2_profile_set_auth(name=self.profile_name,
+                                             data_len=len(self.auth['data']),
+                                             **self.auth)
+        if hasattr(self, 'local_id'):
+            self.vapi.ikev2_profile_set_id(name=self.profile_name,
+                                           data_len=len(self.local_id
+                                                        ['data']),
+                                           **self.local_id)
+        if hasattr(self, 'remote_id'):
+            self.vapi.ikev2_profile_set_id(name=self.profile_name,
+                                           data_len=len(self.remote_id
+                                                        ['data']),
+                                           **self.remote_id)
+        if hasattr(self, 'local_ts'):
+            self.vapi.ikev2_profile_set_ts(name=self.profile_name,
+                                           ts=self.local_ts)
+
+        if hasattr(self, 'remote_ts'):
+            self.vapi.ikev2_profile_set_ts(name=self.profile_name,
+                                           ts=self.remote_ts)
+
+        if hasattr(self, 'responder'):
+            self.vapi.ikev2_set_responder(name=self.profile_name,
+                                          responder=self.responder)
+
+        if hasattr(self, 'responder_hostname'):
+            print(self.responder_hostname)
+            self.vapi.ikev2_set_responder_hostname(name=self.profile_name,
+                                                   **self.responder_hostname)
+
+        if hasattr(self, 'ike_transforms'):
+            self.vapi.ikev2_set_ike_transforms(name=self.profile_name,
+                                               tr=self.ike_transforms)
+
+        if hasattr(self, 'esp_transforms'):
+            self.vapi.ikev2_set_esp_transforms(name=self.profile_name,
+                                               tr=self.esp_transforms)
+
+        if self.udp_encap:
+            self.vapi.ikev2_profile_set_udp_encap(name=self.profile_name)
+
+        if hasattr(self, 'lifetime_data'):
+            self.vapi.ikev2_set_sa_lifetime(name=self.profile_name,
+                                            **self.lifetime_data)
+
+        if hasattr(self, 'ipsec_udp_port'):
+            self.vapi.ikev2_profile_set_ipsec_udp_port(name=self.profile_name,
+                                                       **self.ipsec_udp_port)
+        if hasattr(self, 'tun_itf'):
+            self.vapi.ikev2_set_tunnel_interface(name=self.profile_name,
+                                                 sw_if_index=self.tun_itf)
+
+        if not self.natt:
+            self.vapi.ikev2_profile_disable_natt(name=self.profile_name)
+
+    def query_vpp_config(self):
+        res = self.vapi.ikev2_profile_dump()
+        for r in res:
+            if r.profile.name == self.profile_name:
+                return r.profile
+        return None
diff --git a/test/vpp_lb.py b/test/vpp_lb.py
new file mode 100644
index 0000000..d755cef
--- /dev/null
+++ b/test/vpp_lb.py
@@ -0,0 +1,84 @@
+#  Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import vpp_object
+
+
+class VppLbVip(vpp_object.VppObject):
+
+    def __init__(self, test, pfx, sfx, port, protocol):
+        self._test = test
+        self.pfx = pfx
+        self.sfx = sfx
+        self.port = port
+        self.protocol = protocol
+
+    def add_vpp_config(self):
+        self._test_vapi.lb_add_del_vip(pfx=self.pfx,
+                                       sfx=self.pfx,
+                                       port=self.port,
+                                       protocol=self.protocol)
+
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.lb_add_del_vip(pfx=self.pfx,
+                                       sfx=self.pfx,
+                                       port=self.port,
+                                       protocol=self.protocol,
+                                       is_del=1)
+
+    def query_vpp_config(self):
+        details = self._test.vapi.lb_add_del_vip(fx=self.pfx,
+                                                 sfx=self.pfx,
+                                                 port=self.port,
+                                                 protocol=self.protocol)
+        return True if self == details else False
+
+
+class VppLbAs(vpp_object.VppObject):
+    def __init__(self, test, pfx, port, protocol, app_srv, is_del, is_flush):
+        self._test = test
+        # this is the vip
+        self.pfx = pfx
+        self.port = port
+        self.protocol = protocol
+
+        self.app_srv = app_srv
+        self.is_del = is_del
+        self.is_flush = is_flush
+
+    def add_vpp_config(self):
+        self._test_vapi.lb_add_del_as(pfx=self.pfx,
+                                      port=self.port,
+                                      protocol=self.protocol,
+                                      app_srv=self.app_srv,
+                                      is_flush=self.is_flush,
+                                      )
+
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.lb_add_del_as(pfx=self.pfx,
+                                      port=self.port,
+                                      protocol=self.protocol,
+                                      app_srv=self.app_srv,
+                                      is_flush=self.is_flush,
+                                      is_del=1)
+
+    def query_vpp_config(self):
+        details = self._test.vapi.lb_as_dump(pfx=self.pfx,
+                                             port=self.port,
+                                             protocol=self.protocol)
+        return True if self == details else False
diff --git a/test/vpp_memif.py b/test/vpp_memif.py
new file mode 100644
index 0000000..226f8af
--- /dev/null
+++ b/test/vpp_memif.py
@@ -0,0 +1,140 @@
+import socket
+from ipaddress import IPv4Network
+
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+
+
+def get_if_dump(dump, sw_if_index):
+    for d in dump:
+        if (d.sw_if_index == sw_if_index):
+            return d
+
+
+def query_all_memif_vpp_config(_test):
+    return _test.vapi.memif_dump()
+
+
+def remove_all_memif_vpp_config(_test):
+    dump = _test.vapi.memif_dump()
+    for d in dump:
+        _test.vapi.memif_delete(d.sw_if_index)
+    dump = _test.vapi.memif_socket_filename_dump()
+    for d in dump:
+        if d.socket_id != 0:
+            _test.vapi.memif_socket_filename_add_del(
+                0, d.socket_id, d.socket_filename)
+
+
+class VppSocketFilename(VppObject):
+    def __init__(self, test, socket_id, socket_filename,
+                 add_default_folder=False):
+        self._test = test
+        self.socket_id = socket_id
+        self.socket_filename = socket_filename
+
+        # if True insert default socket folder before socket filename,
+        # after adding vpp config
+        self.add_default_folder = add_default_folder
+
+    def add_vpp_config(self):
+        rv = self._test.vapi.memif_socket_filename_add_del(
+            1, self.socket_id, self.socket_filename)
+        if self.add_default_folder:
+            self.socket_filename = "%s/%s" % (self._test.tempdir,
+                                              self.socket_filename)
+        return rv
+
+    def remove_vpp_config(self):
+        return self._test.vapi.memif_socket_filename_add_del(
+            0, self.socket_id, self.socket_filename)
+
+    def query_vpp_config(self):
+        return self._test.vapi.memif_socket_filename_dump()
+
+    def object_id(self):
+        return "socket-filename-%d-%s" % (self.socket_id, self.socket_filename)
+
+
+class VppMemif(VppObject):
+    def __init__(self, test, role, mode, rx_queues=0, tx_queues=0, if_id=0,
+                 socket_id=0, secret="", ring_size=0, buffer_size=0,
+                 hw_addr=""):
+        self._test = test
+        self.role = role
+        self.mode = mode
+        self.rx_queues = rx_queues
+        self.tx_queues = tx_queues
+        self.if_id = if_id
+        self.socket_id = socket_id
+        self.secret = secret
+        self.ring_size = ring_size
+        self.buffer_size = buffer_size
+        self.hw_addr = hw_addr
+        self.sw_if_index = None
+        self.ip_prefix = IPv4Network("192.168.%d.%d/24" %
+                                     (self.if_id + 1, self.role + 1),
+                                     strict=False)
+
+    def add_vpp_config(self):
+        rv = self._test.vapi.memif_create(
+            role=self.role,
+            mode=self.mode,
+            rx_queues=self.rx_queues,
+            tx_queues=self.tx_queues,
+            id=self.if_id,
+            socket_id=self.socket_id,
+            secret=self.secret,
+            ring_size=self.ring_size,
+            buffer_size=self.buffer_size,
+            hw_addr=self.hw_addr)
+        try:
+            self.sw_if_index = rv.sw_if_index
+        except AttributeError:
+            # rv doesn't have .sw_if_index attribute
+            raise AttributeError("%s %s" % (self, rv))
+
+        return self.sw_if_index
+
+    def admin_up(self):
+        if self.sw_if_index:
+            return self._test.vapi.sw_interface_set_flags(
+                sw_if_index=self.sw_if_index, flags=1)
+
+    def admin_down(self):
+        if self.sw_if_index:
+            return self._test.vapi.sw_interface_set_flags(
+                sw_if_index=self.sw_if_index, flags=0)
+
+    def wait_for_link_up(self, timeout, step=1):
+        if not self.sw_if_index:
+            return False
+        while True:
+            dump = self.query_vpp_config()
+            f = VppEnum.vl_api_if_status_flags_t.IF_STATUS_API_FLAG_LINK_UP
+            if dump.flags & f:
+                return True
+            self._test.sleep(step)
+            timeout -= step
+            if timeout <= 0:
+                return False
+
+    def config_ip4(self):
+        return self._test.vapi.sw_interface_add_del_address(
+            sw_if_index=self.sw_if_index, prefix=self.ip_prefix)
+
+    def remove_vpp_config(self):
+        self._test.vapi.memif_delete(self.sw_if_index)
+        self.sw_if_index = None
+
+    def query_vpp_config(self):
+        if not self.sw_if_index:
+            return None
+        dump = self._test.vapi.memif_dump()
+        return get_if_dump(dump, self.sw_if_index)
+
+    def object_id(self):
+        if self.sw_if_index:
+            return "%d:%d:%d" % (self.role, self.if_id, self.sw_if_index)
+        else:
+            return "%d:%d:None" % (self.role, self.if_id)
diff --git a/test/vpp_pppoe_interface.py b/test/vpp_pppoe_interface.py
new file mode 100644
index 0000000..505ac4c
--- /dev/null
+++ b/test/vpp_pppoe_interface.py
@@ -0,0 +1,42 @@
+
+from vpp_interface import VppInterface
+import socket
+from vpp_papi import mac_pton
+
+
+class VppPppoeInterface(VppInterface):
+    """
+    VPP Pppoe interface
+    """
+
+    def __init__(self, test, client_ip, client_mac,
+                 session_id, decap_vrf_id=0):
+        """ Create VPP PPPoE4 interface """
+        super(VppPppoeInterface, self).__init__(test)
+        self.client_ip = client_ip
+        self.client_mac = client_mac
+        self.session_id = session_id
+        self.decap_vrf_id = decap_vrf_id
+        self.vpp_sw_if_index = -1
+
+    def add_vpp_config(self):
+        r = self.test.vapi.pppoe_add_del_session(
+                self.client_ip, self.client_mac,
+                session_id=self.session_id,
+                decap_vrf_id=self.decap_vrf_id)
+        self.set_sw_if_index(r.sw_if_index)
+        self.vpp_sw_if_index = r.sw_if_index
+        self.generate_remote_hosts()
+
+    def remove_vpp_config(self):
+        self.unconfig()
+        self.test.vapi.pppoe_add_del_session(
+                self.client_ip, self.client_mac,
+                session_id=self.session_id,
+                decap_vrf_id=self.decap_vrf_id,
+                is_add=0)
+
+    def set_unnumbered(self, swif_iface):
+        self.test.vapi.sw_interface_set_unnumbered(
+            swif_iface,
+            self.vpp_sw_if_index)
diff --git a/test/vpp_srv6.py b/test/vpp_srv6.py
new file mode 100644
index 0000000..d6efedc
--- /dev/null
+++ b/test/vpp_srv6.py
@@ -0,0 +1,198 @@
+"""
+  SRv6 LocalSIDs
+
+  object abstractions for representing SRv6 localSIDs in VPP
+"""
+
+from vpp_object import VppObject
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+
+
+class SRv6LocalSIDBehaviors():
+    # from src/vnet/srv6/sr.h
+    SR_BEHAVIOR_END = 1
+    SR_BEHAVIOR_X = 2
+    SR_BEHAVIOR_T = 3
+    SR_BEHAVIOR_D_FIRST = 4   # Unused. Separator in between regular and D
+    SR_BEHAVIOR_DX2 = 5
+    SR_BEHAVIOR_DX6 = 6
+    SR_BEHAVIOR_DX4 = 7
+    SR_BEHAVIOR_DT6 = 8
+    SR_BEHAVIOR_DT4 = 9
+    SR_BEHAVIOR_END_UN_PERF = 10
+    SR_BEHAVIOR_END_UN = 11
+    SR_BEHAVIOR_LAST = 12      # Must always be the last one
+
+
+class SRv6PolicyType():
+    # from src/vnet/srv6/sr.h
+    SR_POLICY_TYPE_DEFAULT = 0
+    SR_POLICY_TYPE_SPRAY = 1
+
+
+class SRv6PolicySteeringTypes():
+    # from src/vnet/srv6/sr.h
+    SR_STEER_L2 = 2
+    SR_STEER_IPV4 = 4
+    SR_STEER_IPV6 = 6
+
+
+class VppSRv6LocalSID(VppObject):
+    """
+    SRv6 LocalSID
+    """
+
+    def __init__(self, test, localsid, behavior, nh_addr,
+                 end_psp, sw_if_index, vlan_index, fib_table):
+        self._test = test
+        self.localsid = localsid
+        self.behavior = behavior
+        self.nh_addr = nh_addr
+        self.end_psp = end_psp
+        self.sw_if_index = sw_if_index
+        self.vlan_index = vlan_index
+        self.fib_table = fib_table
+        self._configured = False
+
+    def add_vpp_config(self):
+        self._test.vapi.sr_localsid_add_del(
+            localsid=self.localsid,
+            behavior=self.behavior,
+            nh_addr=self.nh_addr,
+            is_del=0,
+            end_psp=self.end_psp,
+            sw_if_index=self.sw_if_index,
+            vlan_index=self.vlan_index,
+            fib_table=self.fib_table)
+        self._configured = True
+
+    def remove_vpp_config(self):
+        self._test.vapi.sr_localsid_add_del(
+            localsid=self.localsid,
+            behavior=self.behavior,
+            nh_addr=self.nh_addr,
+            is_del=1,
+            end_psp=self.end_psp,
+            sw_if_index=self.sw_if_index,
+            vlan_index=self.vlan_index,
+            fib_table=self.fib_table)
+        self._configured = False
+
+    def query_vpp_config(self):
+        # sr_localsids_dump API is disabled
+        # use _configured flag for now
+        return self._configured
+
+    def object_id(self):
+        return ("%d;%s,%d"
+                % (self.fib_table,
+                   self.localsid,
+                   self.behavior))
+
+
+class VppSRv6Policy(VppObject):
+    """
+    SRv6 Policy
+    """
+
+    def __init__(self, test, bsid,
+                 is_encap, sr_type, weight, fib_table,
+                 segments, source):
+        self._test = test
+        self.bsid = bsid
+        self.is_encap = is_encap
+        self.sr_type = sr_type
+        self.weight = weight
+        self.fib_table = fib_table
+        self.segments = segments
+        self.n_segments = len(segments)
+        # source not passed to API
+        # self.source = inet_pton(AF_INET6, source)
+        self.source = source
+        self._configured = False
+
+    def add_vpp_config(self):
+        self._test.vapi.sr_policy_add(
+                     bsid=self.bsid,
+                     weight=self.weight,
+                     is_encap=self.is_encap,
+                     is_spray=self.sr_type,
+                     fib_table=self.fib_table,
+                     sids={'num_sids': self.n_segments, 'sids': self.segments})
+        self._configured = True
+
+    def remove_vpp_config(self):
+        self._test.vapi.sr_policy_del(
+                     self.bsid)
+        self._configured = False
+
+    def query_vpp_config(self):
+        # no API to query SR Policies
+        # use _configured flag for now
+        return self._configured
+
+    def object_id(self):
+        return ("%d;%s-><%s>;%d"
+                % (self.sr_type,
+                   self.bsid,
+                   ','.join(self.segments),
+                   self.is_encap))
+
+
+class VppSRv6Steering(VppObject):
+    """
+    SRv6 Steering
+    """
+
+    def __init__(self, test,
+                 bsid,
+                 prefix,
+                 mask_width,
+                 traffic_type,
+                 sr_policy_index,
+                 table_id,
+                 sw_if_index):
+        self._test = test
+        self.bsid = bsid
+        self.prefix = prefix
+        self.mask_width = mask_width
+        self.traffic_type = traffic_type
+        self.sr_policy_index = sr_policy_index
+        self.sw_if_index = sw_if_index
+        self.table_id = table_id
+        self._configured = False
+
+    def add_vpp_config(self):
+        self._test.vapi.sr_steering_add_del(
+                     is_del=0,
+                     bsid=self.bsid,
+                     sr_policy_index=self.sr_policy_index,
+                     table_id=self.table_id,
+                     prefix={'address': self.prefix, 'len':  self.mask_width},
+                     sw_if_index=self.sw_if_index,
+                     traffic_type=self.traffic_type)
+        self._configured = True
+
+    def remove_vpp_config(self):
+        self._test.vapi.sr_steering_add_del(
+                     is_del=1,
+                     bsid=self.bsid,
+                     sr_policy_index=self.sr_policy_index,
+                     table_id=self.table_id,
+                     prefix={'address': self.prefix, 'len':  self.mask_width},
+                     sw_if_index=self.sw_if_index,
+                     traffic_type=self.traffic_type)
+        self._configured = False
+
+    def query_vpp_config(self):
+        # no API to query steering entries
+        # use _configured flag for now
+        return self._configured
+
+    def object_id(self):
+        return ("%d;%d;%s/%d->%s"
+                % (self.table_id,
+                   self.traffic_type,
+                   self.prefix,
+                   self.mask_width,
+                   self.bsid))
diff --git a/test/vpp_vxlan_gbp_tunnel.py b/test/vpp_vxlan_gbp_tunnel.py
new file mode 100644
index 0000000..0898bd9
--- /dev/null
+++ b/test/vpp_vxlan_gbp_tunnel.py
@@ -0,0 +1,75 @@
+
+from vpp_interface import VppInterface
+from vpp_papi import VppEnum
+
+
+INDEX_INVALID = 0xffffffff
+
+
+def find_vxlan_gbp_tunnel(test, src, dst, vni):
+    ts = test.vapi.vxlan_gbp_tunnel_dump(INDEX_INVALID)
+    for t in ts:
+        if src == str(t.tunnel.src) and \
+           dst == str(t.tunnel.dst) and \
+           t.tunnel.vni == vni:
+            return t.tunnel.sw_if_index
+    return INDEX_INVALID
+
+
+class VppVxlanGbpTunnel(VppInterface):
+    """
+    VPP VXLAN GBP interface
+    """
+
+    def __init__(self, test, src, dst, vni, mcast_itf=None, mode=None,
+                 is_ipv6=None, encap_table_id=None, instance=0xffffffff):
+        """ Create VXLAN-GBP Tunnel interface """
+        super(VppVxlanGbpTunnel, self).__init__(test)
+        self.src = src
+        self.dst = dst
+        self.vni = vni
+        self.mcast_itf = mcast_itf
+        self.ipv6 = is_ipv6
+        self.encap_table_id = encap_table_id
+        self.instance = instance
+        if not mode:
+            self.mode = (VppEnum.vl_api_vxlan_gbp_api_tunnel_mode_t.
+                         VXLAN_GBP_API_TUNNEL_MODE_L2)
+        else:
+            self.mode = mode
+
+    def encode(self):
+        return {
+            'src': self.src,
+            'dst': self.dst,
+            'mode': self.mode,
+            'vni': self.vni,
+            'mcast_sw_if_index': self.mcast_itf.sw_if_index
+            if self.mcast_itf else INDEX_INVALID,
+            'encap_table_id': self.encap_table_id,
+            'instance': self.instance,
+        }
+
+    def add_vpp_config(self):
+        reply = self.test.vapi.vxlan_gbp_tunnel_add_del(
+            is_add=1,
+            tunnel=self.encode(),
+        )
+        self.set_sw_if_index(reply.sw_if_index)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self.test.vapi.vxlan_gbp_tunnel_add_del(
+            is_add=0,
+            tunnel=self.encode(),
+        )
+
+    def query_vpp_config(self):
+        return (INDEX_INVALID != find_vxlan_gbp_tunnel(self._test,
+                                                       self.src,
+                                                       self.dst,
+                                                       self.vni))
+
+    def object_id(self):
+        return "vxlan-gbp-%d-%d-%s-%s" % (self.sw_if_index, self.vni,
+                                          self.src, self.dst)
diff --git a/test/vpp_vxlan_tunnel.py b/test/vpp_vxlan_tunnel.py
new file mode 100644
index 0000000..d7e087d
--- /dev/null
+++ b/test/vpp_vxlan_tunnel.py
@@ -0,0 +1,87 @@
+from vpp_interface import VppInterface
+from vpp_papi import VppEnum
+
+
+INDEX_INVALID = 0xffffffff
+DEFAULT_PORT = 4789
+UNDEFINED_PORT = 0
+
+
+def find_vxlan_tunnel(test, src, dst, s_port, d_port, vni):
+    ts = test.vapi.vxlan_tunnel_v2_dump(INDEX_INVALID)
+
+    src_port = DEFAULT_PORT
+    if s_port != UNDEFINED_PORT:
+        src_port = s_port
+
+    dst_port = DEFAULT_PORT
+    if d_port != UNDEFINED_PORT:
+        dst_port = d_port
+
+    for t in ts:
+        if src == str(t.src_address) and \
+           dst == str(t.dst_address) and \
+           src_port == t.src_port and \
+           dst_port == t.dst_port and \
+           t.vni == vni:
+            return t.sw_if_index
+    return INDEX_INVALID
+
+
+class VppVxlanTunnel(VppInterface):
+    """
+    VPP VXLAN interface
+    """
+
+    def __init__(self, test, src, dst, vni,
+                 src_port=UNDEFINED_PORT, dst_port=UNDEFINED_PORT,
+                 mcast_itf=None,
+                 mcast_sw_if_index=INDEX_INVALID,
+                 decap_next_index=INDEX_INVALID,
+                 encap_vrf_id=None, instance=0xffffffff, is_l3=False):
+        """ Create VXLAN Tunnel interface """
+        super(VppVxlanTunnel, self).__init__(test)
+        self.src = src
+        self.dst = dst
+        self.vni = vni
+        self.src_port = src_port
+        self.dst_port = dst_port
+        self.mcast_itf = mcast_itf
+        self.mcast_sw_if_index = mcast_sw_if_index
+        self.encap_vrf_id = encap_vrf_id
+        self.decap_next_index = decap_next_index
+        self.instance = instance
+        self.is_l3 = is_l3
+
+        if (self.mcast_itf):
+            self.mcast_sw_if_index = self.mcast_itf.sw_if_index
+
+    def add_vpp_config(self):
+        reply = self.test.vapi.vxlan_add_del_tunnel_v3(
+            is_add=1, src_address=self.src, dst_address=self.dst, vni=self.vni,
+            src_port=self.src_port, dst_port=self.dst_port,
+            mcast_sw_if_index=self.mcast_sw_if_index,
+            encap_vrf_id=self.encap_vrf_id, is_l3=self.is_l3,
+            instance=self.instance, decap_next_index=self.decap_next_index)
+        self.set_sw_if_index(reply.sw_if_index)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self.test.vapi.vxlan_add_del_tunnel_v2(
+            is_add=0, src_address=self.src, dst_address=self.dst, vni=self.vni,
+            src_port=self.src_port, dst_port=self.dst_port,
+            mcast_sw_if_index=self.mcast_sw_if_index,
+            encap_vrf_id=self.encap_vrf_id, instance=self.instance,
+            decap_next_index=self.decap_next_index)
+
+    def query_vpp_config(self):
+        return (INDEX_INVALID != find_vxlan_tunnel(self._test,
+                                                   self.src,
+                                                   self.dst,
+                                                   self.src_port,
+                                                   self.dst_port,
+                                                   self.vni))
+
+    def object_id(self):
+        return "vxlan-%d-%d-%s-%s" % (self.sw_if_index, self.vni,
+                                      self.src, self.dst)