Punt: specify packets by IP protocol Type

Change-Id: I0c2d6fccd95146e52bb88ca4a6e84554d5d6b2ed
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/ip/ip4.h b/src/vnet/ip/ip4.h
index 5c9add4..9f25f43 100644
--- a/src/vnet/ip/ip4.h
+++ b/src/vnet/ip/ip4.h
@@ -288,6 +288,7 @@
 				  ip4_header_t * ip0);
 
 void ip4_register_protocol (u32 protocol, u32 node_index);
+void ip4_unregister_protocol (u32 protocolx);
 
 serialize_function_t serialize_vnet_ip4_main, unserialize_vnet_ip4_main;