I have a Kamailio server forwarding REGISTERs to an Asterisk box, similar to the way Daniel shows here:

http://kb.asipto.com/asterisk:realtime:kamailio-4.0.x-asterisk-11.3.0-astdb

Can I force Kamailio to append rport=5060 to the topmost Via header, prior to forwarding the REGISTER to Asterisk?  I tried add_local_rport() but it only included 'rport' and not 5060.

Thanks,

Marc