[Serusers] UAC module (backport to 0.9.0)

Hello, Has anyone succeeded in getting UAC authentication to work? I'm doing the following: route {         resetflag(1);         t_on_failure("1");         route(1); } route[1] {         if (uri=~"[@:](192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.)") {             sl_send_reply("479", "We don't forward to private IP addresses");             break;         };         if (!t_relay()) {                 sl_reply_error();         }; } failure_route[1] {         # authentication reply received?         if ( t_check_status("401|407") ) {                 if (!isflagset(1) && uac_auth()) {                         setflag(1);                         t_on_failure("1");                         append_branch();                         route(1);                 } else {                         t_reply("500","Error occurred");                 }                 break;         } } When uac_auth() is called I get the following in the:  0(28973) DEBUG:uac:uac_auth: picked reply is (nil), code 407  0(28973) BUG:uac:uac_auth: empty reply on picked branch Any suggestions or ideas? Thank  you, Michael