L3 proxy FIB source for container networking

Change-Id: I4164c4c19c8dbfd73e6ddf94a12056325cc093b9
Signed-off-by: Neale Ranns <nranns@cisco.com>
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
diff --git a/src/vnet/fib/fib_entry.h b/src/vnet/fib/fib_entry.h
index 2f6e37f..7e4b52a 100644
--- a/src/vnet/fib/fib_entry.h
+++ b/src/vnet/fib/fib_entry.h
@@ -43,6 +43,10 @@
      */
     FIB_SOURCE_CLASSIFY,
     /**
+     * A route the is being 'proxied' on behalf of another device
+     */
+    FIB_SOURCE_PROXY,
+    /**
      * Route added as a result of interface configuration.
      * this will also come from the API/CLI, but the distinction is
      * that is from confiiguration on an interface, not a 'ip route' command
@@ -136,6 +140,7 @@
 #define FIB_SOURCES {					\
     [FIB_SOURCE_SPECIAL] = "special",			\
     [FIB_SOURCE_INTERFACE] = "interface",		\
+    [FIB_SOURCE_PROXY] = "proxy",                       \
     [FIB_SOURCE_API] = "API",			        \
     [FIB_SOURCE_CLI] = "CLI",			        \
     [FIB_SOURCE_ADJ] = "adjacency",			\