Do you have something like this into your configuration?
if (client_nat_test("3")) { force_rport(); fix_contact(); };
On Jul 16, 2004, at 11:27 AM, Andrea Bondavalli wrote:
As you can see from the following traces the Via field (Via: SIP/2.0/UDP 192.168.0.10:5060;received=213.92.1.143;branch=z9hG4bK-fdee73bb) of the BYE sent by 213.92.1.178:5060 to 213.92.1.197:5060 doesn't report the port number of the incoming interface (rport=1029).
The final result is that the answer (200 OK) is sent back to the wrong port number (5060 instead of 1029).