Hello, is it for any good that SBC tries to decode a frame even if it is too small or missing? Attached you find a patch. Greetings Christian -------------------------------------------------------- Dr.-Ing. Christian Hoene Computer Networks and Internet, University of Tübingen Sand 13, 72076 Tübingen, Germany, Phone +49 7071 2970532 http://net.informatik.uni-tuebingen.de/~hoene