We facing an issue on capturing sip message in Kamailio(Version: 5.2.3). The scenario is very simple.

In this simple scenario, we can't catch any reply messages in between the Kamailio and UAC. We have tried reply_route, onreply_route, and onsend_route. But no one work to grep that reply on that side. onsend_route was bad try as its only for forwarded reply message. Is there any other magic to capture those replies. A debug=3 log message attached here. 

Thanks,

Salah