diff --git a/src/vnet/srv6/sr_localsid.c b/src/vnet/srv6/sr_localsid.c
index adeb5c0..1be6833 100755
--- a/src/vnet/srv6/sr_localsid.c
+++ b/src/vnet/srv6/sr_localsid.c
@@ -587,12 +587,11 @@
  */
 typedef struct
 {
-  u32 localsid_index;
-  ip6_address_t src, out_dst;
+  ip6_address_t localsid;
+  u16 behavior;
   u8 sr[256];
   u8 num_segments;
   u8 segments_left;
-  //With SRv6 header update include flags here.
 } sr_localsid_trace_t;
 
 #define foreach_sr_localsid_error                                   \
@@ -643,16 +642,12 @@
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  ip6_sr_main_t *sm = &sr_main;
   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 
-  ip6_sr_localsid_t *ls =
-    pool_elt_at_index (sm->localsids, t->localsid_index);
-
   s =
     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
-	    &ls->localsid);
-  switch (ls->behavior)
+	    &t->localsid);
+  switch (t->behavior)
     {
     case SR_BEHAVIOR_END:
       s = format (s, "\tBehavior: End\n");
@@ -686,7 +681,7 @@
     {
       if (t->num_segments > 0)
 	{
-	  s = format (s, "\tSegments left: %d\n", t->num_segments);
+	  s = format (s, "\tSegments left: %d\n", t->segments_left);
 	  s = format (s, "\tSID list: [in ietf order]");
 	  int i = 0;
 	  for (i = 0; i < t->num_segments; i++)
@@ -882,7 +877,7 @@
 }
 
 /**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
+ * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
  */
 static uword
 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
@@ -975,7 +970,97 @@
 	  end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
 	  end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
 
-	  //TODO: trace.
+	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b0, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls0->behavior;
+	      if (ip0 == vlib_buffer_get_current (b0))
+		{
+		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr0->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
+		      tr->num_segments =
+			sr0->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr0->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b1, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls1->behavior;
+	      if (ip1 == vlib_buffer_get_current (b1))
+		{
+		  if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr1->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
+		      tr->num_segments =
+			sr1->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr1->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b2, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls2->behavior;
+	      if (ip2 == vlib_buffer_get_current (b2))
+		{
+		  if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr2->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
+		      tr->num_segments =
+			sr2->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr2->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b3, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls3->behavior;
+	      if (ip3 == vlib_buffer_get_current (b3))
+		{
+		  if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr3->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
+		      tr->num_segments =
+			sr3->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr3->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
 
 	  vlib_increment_combined_counter
 	    (((next0 ==
@@ -1043,14 +1128,11 @@
 	      sr_localsid_trace_t *tr =
 		vlib_add_trace (vm, node, b0, sizeof (*tr));
 	      tr->num_segments = 0;
-	      tr->localsid_index = ls0 - sm->localsids;
-
+	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls0->behavior;
 	      if (ip0 == vlib_buffer_get_current (b0))
 		{
-		  clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
-			       sizeof (tr->src.as_u8));
-		  clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
-			       sizeof (tr->out_dst.as_u8));
 		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
 		      && sr0->type == ROUTING_HEADER_TYPE_SR)
 		    {
@@ -1098,7 +1180,7 @@
 /* *INDENT-ON* */
 
 /**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
+ * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
  */
 static uword
 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
@@ -1195,7 +1277,97 @@
 	  end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
 			      prev3);
 
-	  //TODO: proper trace.
+	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b0, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls0->behavior;
+	      if (ip0 == vlib_buffer_get_current (b0))
+		{
+		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr0->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
+		      tr->num_segments =
+			sr0->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr0->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b1, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls1->behavior;
+	      if (ip1 == vlib_buffer_get_current (b1))
+		{
+		  if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr1->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
+		      tr->num_segments =
+			sr1->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr1->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b2, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls2->behavior;
+	      if (ip2 == vlib_buffer_get_current (b2))
+		{
+		  if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr2->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
+		      tr->num_segments =
+			sr2->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr2->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
+
+	  if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
+	    {
+	      sr_localsid_trace_t *tr =
+		vlib_add_trace (vm, node, b3, sizeof (*tr));
+	      tr->num_segments = 0;
+	      clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls3->behavior;
+	      if (ip3 == vlib_buffer_get_current (b3))
+		{
+		  if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
+		      && sr3->type == ROUTING_HEADER_TYPE_SR)
+		    {
+		      clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
+		      tr->num_segments =
+			sr3->length * 8 / sizeof (ip6_address_t);
+		      tr->segments_left = sr3->segments_left;
+		    }
+		}
+	      else
+		tr->num_segments = 0xFF;
+	    }
 
 	  vlib_increment_combined_counter
 	    (((next0 ==
@@ -1262,14 +1434,11 @@
 	      sr_localsid_trace_t *tr =
 		vlib_add_trace (vm, node, b0, sizeof (*tr));
 	      tr->num_segments = 0;
-	      tr->localsid_index = ls0 - sm->localsids;
-
+	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+			   sizeof (tr->localsid.as_u8));
+	      tr->behavior = ls0->behavior;
 	      if (ip0 == vlib_buffer_get_current (b0))
 		{
-		  clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
-			       sizeof (tr->src.as_u8));
-		  clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
-			       sizeof (tr->out_dst.as_u8));
 		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
 		      && sr0->type == ROUTING_HEADER_TYPE_SR)
 		    {
@@ -1280,9 +1449,7 @@
 		    }
 		}
 	      else
-		{
-		  tr->num_segments = 0xFF;
-		}
+		tr->num_segments = 0xFF;
 	    }
 
 	  vlib_increment_combined_counter
diff --git a/src/vnet/srv6/sr_policy_rewrite.c b/src/vnet/srv6/sr_policy_rewrite.c
index 7a37a66..f427bbf 100755
--- a/src/vnet/srv6/sr_policy_rewrite.c
+++ b/src/vnet/srv6/sr_policy_rewrite.c
@@ -672,7 +672,8 @@
     segment_list = pool_elt_at_index (sm->sid_lists, *sl_index);
     vec_free (segment_list->segments);
     vec_free (segment_list->rewrite);
-    vec_free (segment_list->rewrite_bsid);
+    if (!sr_policy->is_encap)
+      vec_free (segment_list->rewrite_bsid);
     pool_put_index (sm->sid_lists, *sl_index);
   }
 
@@ -766,7 +767,8 @@
       segment_list = pool_elt_at_index (sm->sid_lists, sl_index);
       vec_free (segment_list->segments);
       vec_free (segment_list->rewrite);
-      vec_free (segment_list->rewrite_bsid);
+      if (!sr_policy->is_encap)
+	vec_free (segment_list->rewrite_bsid);
       pool_put_index (sm->sid_lists, sl_index);
       vec_del1 (sr_policy->segments_lists,
 		sl_index_iterate - sr_policy->segments_lists);
diff --git a/src/vnet/srv6/sr_steering.c b/src/vnet/srv6/sr_steering.c
index 704adaa..57fe21f 100755
--- a/src/vnet/srv6/sr_steering.c
+++ b/src/vnet/srv6/sr_steering.c
@@ -165,7 +165,7 @@
 	      sm->fib_table_ip4 = (u32) ~ 0;
 	    }
 
-	  return 1;
+	  return 0;
 	}
       else			/* It means user requested to update an existing SR steering policy */
 	{
diff --git a/test/patches/scapy-2.3.3/inet6.py.patch b/test/patches/scapy-2.3.3/inet6.py.patch
new file mode 100644
index 0000000..f98e709
--- /dev/null
+++ b/test/patches/scapy-2.3.3/inet6.py.patch
@@ -0,0 +1,185 @@
+diff --git a/scapy/layers/inet6.py b/scapy/layers/inet6.py
+--- a/scapy/layers/inet6.py	2017-06-01 14:04:18.160881034 +0200
++++ b/scapy/layers/inet6.py	2017-06-02 09:08:40.133800208 +0200
+@@ -369,6 +369,8 @@
+             return Raw
+         elif self.nh == 135 and len(p) > 3: # Mobile IPv6
+             return _mip6_mhtype2cls.get(ord(p[2]), MIP6MH_Generic)
++        elif self.nh == 43 and ord(p[2]) == 4:  # Segment Routing header
++            return IPv6ExtHdrSegmentRouting
+         else:
+             return get_cls(ipv6nhcls.get(self.nh,"Raw"), "Raw")
+
+@@ -430,6 +432,14 @@
+                     sd = strxor(sd, a)
+                 sd = inet_ntop(socket.AF_INET6, sd)
+
++        if self.nh == 43 and isinstance(self.payload, IPv6ExtHdrSegmentRouting):
++            # With segment routing header (rh == 4), the destination is
++            # the first address of the IPv6 addresses list
++            try:
++                sd = self.addresses[0]
++            except IndexError:
++                sd = self.dst
++
+         if self.nh == 44 and isinstance(self.payload, IPv6ExtHdrFragment):
+             nh = self.payload.nh
+
+@@ -489,6 +499,8 @@
+             return self.payload.answers(other.payload.payload)
+         elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrRouting):
+             return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting
++        elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrSegmentRouting):
++            return self.payload.answers(other.payload.payload)  # Buggy if self.payload is a IPv6ExtHdrRouting
+         elif other.nh == 60 and isinstance(other.payload, IPv6ExtHdrDestOpt):
+             return self.payload.payload.answers(other.payload.payload)
+         elif self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): # BU in reply to BRR, for instance
+@@ -919,6 +931,148 @@
+             pkt = pkt[:3]+struct.pack("B", len(self.addresses))+pkt[4:]
+         return _IPv6ExtHdr.post_build(self, pkt, pay)
+
++######################### Segment Routing Header ############################
++
++# This implementation is based on draft 06, available at:
++# https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-06
++
++class IPv6ExtHdrSegmentRoutingTLV(Packet):
++    name = "IPv6 Option Header Segment Routing - Generic TLV"
++    fields_desc = [ ByteField("type", 0),
++                    ByteField("len", 0),
++                    ByteField("reserved", 0),
++                    ByteField("flags", 0),
++                    StrLenField("value", "", length_from=lambda pkt: pkt.len) ]
++
++    def extract_padding(self, p):
++        return "",p
++
++    registered_sr_tlv = {}
++    @classmethod
++    def register_variant(cls):
++        cls.registered_sr_tlv[cls.type.default] = cls
++
++    @classmethod
++    def dispatch_hook(cls, pkt=None, *args, **kargs):
++        if pkt:
++            tmp_type = ord(pkt[0])
++            return cls.registered_sr_tlv.get(tmp_type, cls)
++        return cls
++
++
++class IPv6ExtHdrSegmentRoutingTLVIngressNode(IPv6ExtHdrSegmentRoutingTLV):
++    name = "IPv6 Option Header Segment Routing - Ingress Node TLV"
++    fields_desc = [ ByteField("type", 1),
++                    ByteField("len", 18),
++                    ByteField("reserved", 0),
++                    ByteField("flags", 0),
++                    IP6Field("ingress_node", "::1") ]
++
++
++class IPv6ExtHdrSegmentRoutingTLVEgressNode(IPv6ExtHdrSegmentRoutingTLV):
++    name = "IPv6 Option Header Segment Routing - Egress Node TLV"
++    fields_desc = [ ByteField("type", 2),
++                    ByteField("len", 18),
++                    ByteField("reserved", 0),
++                    ByteField("flags", 0),
++                    IP6Field("egress_node", "::1") ]
++
++
++class IPv6ExtHdrSegmentRoutingTLVPadding(IPv6ExtHdrSegmentRoutingTLV):
++    name = "IPv6 Option Header Segment Routing - Padding TLV"
++    fields_desc = [ ByteField("type", 4),
++                    FieldLenField("len", None, length_of="padding", fmt="B"),
++                    StrLenField("padding", b"\x00", length_from=lambda pkt: pkt.len) ]
++
++
++class IPv6ExtHdrSegmentRouting(_IPv6ExtHdr):
++    # 0                   1                   2                   3
++    # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #| Next Header   |  Hdr Ext Len  | Routing Type  | Segments Left |
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #|  Last Entry   |     Flags     |              Tag              |
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #|                                                               |
++    #|            Segment List[0] (128 bits IPv6 address)            |
++    #|                                                               |
++    #|                                                               |
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #|                                                               |
++    #|                                                               |
++    #                              ...
++    #|                                                               |
++    #|                                                               |
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #|                                                               |
++    #|            Segment List[n] (128 bits IPv6 address)            |
++    #|                                                               |
++    #|                                                               |
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #//                                                             //
++    #//         Optional Type Length Value objects (variable)       //
++    #//                                                             //
++    #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++    #
++    #      0 1 2 3 4 5 6 7
++    #     +-+-+-+-+-+-+-+-+
++    #     |U|P|O|A|H|  U  |
++    #     +-+-+-+-+-+-+-+-+
++
++    name = "IPv6 Segment Routing Extension Header"
++    fields_desc = [ ByteEnumField("nh", 59, ipv6nh),
++                    ByteField("len", None),
++                    ByteField("type", 4),
++                    ByteField("segleft", None),
++                    ByteField("lastentry", None),
++                    BitField("unused1", 0, 1),
++                    BitField("protected", 0, 1),
++                    BitField("oam", 0, 1),
++                    BitField("alert", 0, 1),
++                    BitField("hmac", 0, 1),
++                    BitField("unused2", 0, 3),
++                    ShortField("tag", 0),
++                    IP6ListField("addresses", ["::1"],
++                        count_from=lambda pkt: pkt.lastentry+1),
++                    PacketListField("tlv_objects", [], IPv6ExtHdrSegmentRoutingTLV,
++                        length_from=lambda pkt: 8*pkt.len - 16*(pkt.lastentry+1)) ]
++
++    overload_fields = { IPv6: { "nh": 43 } }
++
++    def post_build(self, pkt, pay):
++
++        if self.len is None:
++
++            # The extension must be align on 8 bytes
++            tmp_mod = (len(pkt) - 8) % 8
++            if tmp_mod == 1:
++                warning("IPv6ExtHdrSegmentRouting(): can't pad 1 byte !")
++            elif tmp_mod >= 2:
++                #Add the padding extension
++                tmp_pad = b"\x00" * (tmp_mod-2)
++                tlv = IPv6ExtHdrSegmentRoutingTLVPadding(padding=tmp_pad)
++                pkt += str(tlv)
++
++            tmp_len = (len(pkt) - 8) / 8
++            pkt = pkt[:1] + struct.pack("B", tmp_len)+ pkt[2:]
++
++        if self.segleft is None:
++            tmp_len = len(self.addresses)
++            if tmp_len:
++                tmp_len -= 1
++            pkt = pkt[:3] + struct.pack("B", tmp_len) + pkt[4:]
++
++        if self.lastentry is None:
++            #km - changed to contain n-1
++            tmp_len = len(self.addresses)
++            if tmp_len:
++                tmp_len -= 1
++            #pkt = pkt[:4] + struct.pack("B", len(self.addresses)) + pkt[5:]
++            pkt = pkt[:4] + struct.pack("B", tmp_len) + pkt[5:]
++
++        return _IPv6ExtHdr.post_build(self, pkt, pay)
++
++
+ ########################### Fragmentation Header ############################
+
+ class IPv6ExtHdrFragment(_IPv6ExtHdr):
diff --git a/test/test_srv6.py b/test/test_srv6.py
new file mode 100644
index 0000000..a31b30e
--- /dev/null
+++ b/test/test_srv6.py
@@ -0,0 +1,1997 @@
+#!/usr/bin/env python
+
+import unittest
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+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 scapy.utils import inet_pton, inet_ntop
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Test Case """
+
+    @classmethod
+    def setUpClass(self):
+        super(TestSRv6, self).setUpClass()
+
+    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 ip arp"))
+        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()
+
+    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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        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()
+
+    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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        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()
+
+    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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End without PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid_addr='A3::0',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr='::',
+                        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?)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End)
+
+        # 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,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid_addr='A3::0',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr='::',
+                        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,
+                                         proto=DpoProto.DPO_PROTO_IP6),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        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_addr='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,
+                                         proto=DpoProto.DPO_PROTO_IP6),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index,
+                                         proto=DpoProto.DPO_PROTO_IP6)],
+                           is_ip6=1)
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid_addr='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_addr='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
+        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,
+                                          proto=DpoProto.DPO_PROTO_IP6,
+                                          nh_table_id=0)],
+                            table_id=0,
+                            is_ip6=1)
+        route0.add_vpp_config()
+        route1 = VppIpRoute(self, "a4::", 64,
+                            [VppRoutePath(self.pg2.remote_ip6,
+                                          self.pg2.sw_if_index,
+                                          proto=DpoProto.DPO_PROTO_IP6,
+                                          nh_table_id=vrf_1)],
+                            table_id=vrf_1,
+                            is_ip6=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_addr='a3::c4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
+                        nh_addr='::',
+                        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_addr='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
+        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,
+                            is_ip6=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,
+                            is_ip6=0)
+        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_addr='a3::c4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
+                        nh_addr='::',
+                        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_addr='a3::c4',
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
+                        nh_addr='::',
+                        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()
+
+    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(str(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" (59)
+        self.assertEqual(rx_srh.nh, 59)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        self.assertEqual(Ether(str(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(str(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(str(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(str(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, 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=59) /
+             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=59) / 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(str(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(
+                str(Ether(str(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.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:
+                print packet.command()
+                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/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 1daa2a9..95de0be 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -2108,3 +2108,121 @@
                          'client_ip': client_ip,
                          'decap_vrf_id': decap_vrf_id,
                          'client_mac': client_mac})
+
+    def sr_localsid_add_del(self,
+                            localsid_addr,
+                            behavior,
+                            nh_addr,
+                            is_del=0,
+                            end_psp=0,
+                            sw_if_index=0xFFFFFFFF,
+                            vlan_index=0,
+                            fib_table=0,
+                            ):
+        """ Add/del IPv6 SR local-SID.
+
+        :param localsid_addr:
+        :param behavior: END=1; END.X=2; END.DX2=4; END.DX6=5;
+        :param behavior: END.DX4=6; END.DT6=7; END.DT4=8
+        :param nh_addr:
+        :param is_del:  (Default value = 0)
+        :param end_psp: (Default value = 0)
+        :param sw_if_index: (Default value = 0xFFFFFFFF)
+        :param vlan_index:  (Default value = 0)
+        :param fib_table:   (Default value = 0)
+        """
+        return self.api(
+            self.papi.sr_localsid_add_del,
+            {'is_del': is_del,
+             'localsid_addr': localsid_addr,
+             'end_psp': end_psp,
+             'behavior': behavior,
+             'sw_if_index': sw_if_index,
+             'vlan_index': vlan_index,
+             'fib_table': fib_table,
+             'nh_addr': nh_addr
+             }
+        )
+
+    def sr_policy_add(
+            self,
+            bsid_addr,
+            weight=1,
+            is_encap=1,
+            type=0,
+            fib_table=0,
+            n_segments=0,
+            segments=[]):
+        """
+        :param bsid_addr: bindingSID of the SR Policy
+        :param weight: weight of the sid list. optional. (default: 1)
+        :param is_encap: (bool) whether SR policy should Encap or SRH insert \
+            (default: Encap)
+        :param type: type/behavior of the SR policy. (default or spray) \
+            (default: default)
+        :param fib_table: VRF where to install the FIB entry for the BSID \
+            (default: 0)
+        :param n_segments: number of segments \
+            (default: 0)
+        :param segments: a vector of IPv6 address composing the segment list \
+            (default: [])
+        """
+        return self.api(
+            self.papi.sr_policy_add,
+            {'bsid_addr': bsid_addr,
+             'weight': weight,
+             'is_encap': is_encap,
+             'type': type,
+             'fib_table': fib_table,
+             'n_segments': n_segments,
+             'segments': segments
+             }
+        )
+
+    def sr_policy_del(
+            self,
+            bsid_addr,
+            sr_policy_index=0):
+        """
+        :param bsid: bindingSID of the SR Policy
+        :param sr_policy_index: index of the sr policy (default: 0)
+        """
+        return self.api(
+            self.papi.sr_policy_del,
+            {'bsid_addr': bsid_addr,
+             'sr_policy_index': sr_policy_index
+             })
+
+    def sr_steering_add_del(
+            self,
+            is_del,
+            bsid_addr,
+            sr_policy_index,
+            table_id,
+            prefix_addr,
+            mask_width,
+            sw_if_index,
+            traffic_type):
+        """
+        Steer traffic L2 and L3 traffic through a given SR policy
+
+        :param is_del: delete or add
+        :param bsid_addr: bindingSID of the SR Policy (alt to sr_policy_index)
+        :param sr_policy: is the index of the SR Policy (alt to bsid)
+        :param table_id: is the VRF where to install the FIB entry for the BSID
+        :param prefix_addr: is the IPv4/v6 address for L3 traffic type
+        :param mask_width: is the mask for L3 traffic type
+        :param sw_if_index: is the incoming interface for L2 traffic
+        :param traffic_type: type of traffic (IPv4: 4, IPv6: 6, L2: 2)
+        """
+        return self.api(
+            self.papi.sr_steering_add_del,
+            {'is_del': is_del,
+             'bsid_addr': bsid_addr,
+             'sr_policy_index': sr_policy_index,
+             'table_id': table_id,
+             'prefix_addr': prefix_addr,
+             'mask_width': mask_width,
+             'sw_if_index': sw_if_index,
+             'traffic_type': traffic_type
+             })
diff --git a/test/vpp_srv6.py b/test/vpp_srv6.py
new file mode 100644
index 0000000..28ff4b8
--- /dev/null
+++ b/test/vpp_srv6.py
@@ -0,0 +1,238 @@
+"""
+  SRv6 LocalSIDs
+
+  object abstractions for representing SRv6 localSIDs in VPP
+"""
+
+from vpp_object import *
+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_LAST = 10      # 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_addr, behavior, nh_addr, end_psp,
+                 sw_if_index, vlan_index, fib_table):
+        self._test = test
+        self.localsid_addr = localsid_addr
+        # keep binary format in _localsid_addr
+        self._localsid_addr = inet_pton(AF_INET6, self.localsid_addr)
+        self.behavior = behavior
+        self.nh_addr = nh_addr
+        # keep binary format in _nh_addr
+        if ':' in nh_addr:
+            # IPv6
+            self._nh_addr = inet_pton(AF_INET6, nh_addr)
+        else:
+            # IPv4
+            # API expects 16 octets (128 bits)
+            # last 4 octets are used for IPv4
+            # --> prepend 12 octets
+            self._nh_addr = ('\x00' * 12) + inet_pton(AF_INET, 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(
+            self._localsid_addr,
+            self.behavior,
+            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(
+            self._localsid_addr,
+            self.behavior,
+            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 __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return ("%d;%s,%d"
+                % (self.fib_table,
+                   self.localsid_addr,
+                   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
+        # keep binary format in _bsid
+        self._bsid = inet_pton(AF_INET6, bsid)
+        self.is_encap = is_encap
+        self.sr_type = sr_type
+        self.weight = weight
+        self.fib_table = fib_table
+        self.segments = segments
+        # keep binary format in _segments
+        self._segments = []
+        for seg in segments:
+            self._segments.extend(inet_pton(AF_INET6, seg))
+        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(
+                     self._bsid,
+                     self.weight,
+                     self.is_encap,
+                     self.sr_type,
+                     self.fib_table,
+                     self.n_segments,
+                     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 __str__(self):
+        return self.object_id()
+
+    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
+        # keep binary format in _bsid
+        self._bsid = inet_pton(AF_INET6, bsid)
+        self.prefix = prefix
+        # keep binary format in _prefix
+        if ':' in prefix:
+            # IPv6
+            self._prefix = inet_pton(AF_INET6, prefix)
+        else:
+            # IPv4
+            # API expects 16 octets (128 bits)
+            # last 4 octets are used for IPv4
+            # --> prepend 12 octets
+            self._prefix = ('\x00' * 12) + inet_pton(AF_INET, 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(
+                     0,
+                     self._bsid,
+                     self.sr_policy_index,
+                     self.table_id,
+                     self._prefix,
+                     self.mask_width,
+                     self.sw_if_index,
+                     self.traffic_type)
+        self._configured = True
+
+    def remove_vpp_config(self):
+        self._test.vapi.sr_steering_add_del(
+                     1,
+                     self._bsid,
+                     self.sr_policy_index,
+                     self.table_id,
+                     self._prefix,
+                     self.mask_width,
+                     self.sw_if_index,
+                     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 __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return ("%d;%d;%s/%d->%s"
+                % (self.table_id,
+                   self.traffic_type,
+                   self.prefix,
+                   self.mask_width,
+                   self.bsid))