--- a/src/node/socket-factory.cc	Sun Dec 30 19:36:44 2007 -0800
+++ b/src/node/socket-factory.cc	Wed Jan 02 09:09:24 2008 +0100
@@ -25,8 +25,6 @@
 const InterfaceId SocketFactory::iid = MakeInterfaceId ("SocketFactory", Object::iid);
 
 SocketFactory::SocketFactory ()
-{
-  SetInterfaceId (SocketFactory::iid);
-}
+{}
 
 } // namespace ns3