Index: trunk/BNC/bncnetqueryudp.cpp
===================================================================
--- trunk/BNC/bncnetqueryudp.cpp	(revision 1722)
+++ trunk/BNC/bncnetqueryudp.cpp	(revision 1723)
@@ -98,4 +98,5 @@
   delete _udpSocket;
   _udpSocket = new QUdpSocket();
+  _udpSocket->bind(0);
   connect(_udpSocket, SIGNAL(readyRead()), _eventLoop, SLOT(quit()));