--- a/src/internet-stack/udp-socket-impl.cc	Wed Oct 21 17:19:03 2009 -0700
+++ a/src/internet-stack/udp-socket-impl.cc	Thu Nov 19 16:12:05 2009 +0100
@@ -399,6 +399,11 @@ 
       NS_LOG_LOGIC ("Limited broadcast end.");
       return p->GetSize();
     }
+  else if (m_endPoint->GetLocalAddress() != Ipv4Address::GetAny())
+    {
+      m_udp->Send(p->Copy (), m_endPoint->GetLocalAddress(), dest,
+                  m_endPoint->GetLocalPort(), port, 0);
+    }
   else if (ipv4->GetRoutingProtocol () != 0)
     {
       Ipv4Header header;