--- a/src/internet-node/ipv4-l4-demux.cc	Wed Jan 02 15:54:53 2008 +0100
+++ b/src/internet-node/ipv4-l4-demux.cc	Thu Jan 03 08:34:31 2008 +0100
@@ -61,7 +61,8 @@
 InterfaceId 
 Ipv4L4Demux::iid (void)
 {
-  static InterfaceId iid = MakeInterfaceId ("Ipv4L4Demux", Object::iid ());
+  static InterfaceId iid = InterfaceId ("Ipv4L4Demux")
+    .SetParent<Object> ();
   return iid;
 }