Index: source/ariba/overlay/BaseOverlay.cpp
===================================================================
--- source/ariba/overlay/BaseOverlay.cpp	(revision 6849)
+++ source/ariba/overlay/BaseOverlay.cpp	(revision 6851)
@@ -1014,5 +1014,6 @@
 
 	// inform sideport and listener
-	ld->listener->onLinkDown( ld->overlayId, ld->remoteNode );
+	if(ld->listener != NULL)
+		ld->listener->onLinkDown( ld->overlayId, ld->remoteNode );
 	sideport->onLinkDown(ld->overlayId, this->nodeId, ld->remoteNode, this->spovnetId );