[SR-Users] 401 responses ending up in onreply_route instead of failure_route

Situation: endpoint -> kamailio (4.1.0) -> upstream sip server (kamailio 4.0.x) For an outbound call endpoint authenticates with kamailio. Kamailio relays the invite to upstream and upstream responds with a 401. This 401 should trigger authentication. So I thought I could use uac_auth() to fix this. uac_rely may only be used from FAILURE_ROUTE. So the initial INVITE from the endpoint has this set: if (is_method("INVITE")) { if(!t_is_set("failure_route")) t_on_failure("MANAGE_FAILURE"); } But to my suprise the 401 doesn't end up in the failure_route but in the onreply_route. Why? What am I missing? -- POCOS B.V. - Croy 9c - 5653 LC Eindhoven Telefoon: 040 293 8661 - Fax: 040 293 8658 http://www.pocos.nl/ - http://www.sipo.nl/ K.v.K. Eindhoven 17097024