--- a/src/internet-node/ipv4-interface.h	Wed Apr 09 17:27:56 2008 -0700
+++ b/src/internet-node/ipv4-interface.h	Wed Apr 09 17:28:19 2008 -0700
@@ -63,6 +63,8 @@
 class Ipv4Interface  : public Object
 {
 public:
+  static TypeId GetTypeId (void);
+
   Ipv4Interface ();
   virtual ~Ipv4Interface();