BVI Interface

a new dedicated BVI interface as opposed to [re]using a loopback.

benefits:
 - removes ambiguity over the purpose of a loopback interface
 - TX node dedicated to BVI only functions.

Change-Id: I749d6b38440d450ac5b909a28053c75ec9df946a
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index b6028e9..822ad68 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -161,6 +161,7 @@
   l2/l2_api.c
   l2/l2_bd.c
   l2/l2_bvi.c
+  l2/l2_bvi_node.c
   l2/l2_input_classify.c
   l2/l2_output_classify.c
   l2/l2_efp_filter.c
@@ -181,6 +182,7 @@
 )
 
 list(APPEND VNET_MULTIARCH_SOURCES
+  l2/l2_bvi_node.c
   l2/l2_fwd.c
   l2/l2_learn.c
   l2/l2_output.c