--- a/src/internet-stack/nsc-tcp-l4-protocol.cc	Thu Feb 04 15:20:29 2010 +0100
+++ b/src/internet-stack/nsc-tcp-l4-protocol.cc	Thu Feb 04 14:10:13 2010 -0500
@@ -382,7 +382,7 @@
   for (Ipv4EndPointDemux::EndPointsI endPoint = endPoints.begin ();
        endPoint != endPoints.end (); endPoint++) {
           // NSC HACK: (ab)use TcpSocket::ForwardUp for signalling
-          (*endPoint)->ForwardUp (NULL, Ipv4Address(), 0);
+          (*endPoint)->ForwardUp (NULL, Ipv4Address(), Ipv4Address(), 0);
   }
 }