 | 1 | initial version |
It looks like the CCIGI heuristic looks for a 1,2 or 3 in the 3 byte. The comment says /* Currently there are only 3 versions of CIGI */ even if you define the port it will do
if ( !packet_is_cigi(tvb) ) {
You could raise a bug report supplying a small sample trace with your version of the protocol.