[Serusers] use_dns_cache and call forwarding

Hi guys, I have a problem with call forwarding (on busy or not answer).., the call fall into the failure_route(1) block, and AVP checking and pushto does its job. Here a snipped of code of failure_route(1) (flag 27 means call fwd if no answer): if (isflagset(27) && t_check_status("408")) { # if fwd no answer is set and reply msg is 408 if (avp_pushto("$ruri", "s:fwdnoanswer")) { avp_delete("s:fwdnoanswer"); resetflag(27); avp_print(); log(1, "LOG: --> appending new branch..."); if (!append_branch()){ t_reply("500", "Too many branches?!"); drop; } log(1, "LOG: --> Calling route_6..."); route(6); break; Route(6) finally calls route(1), where t_relay is called. But have a dns failure..and the call never is forwarded. == ser.log == DEBUG: mk_proxy: doing DNS lookup... get_record: lookup(_sip._udp.wsa.lab, 33) failed_ sip_resolvehost: no SRV record found for wsa.lab, trying 'normal' lookup..._ check_via_address(190.244.33.5, 190.244.33.5, 0)_ ERROR: udp_send: sendto(sock,0x2ab32599c720,910,0,0x2ab325999e68,16): Operation not permitted(1)_ msg_send: ERROR: udp_send failed_ ERROR: t_forward_nonack: sending request failed_ DEBUG: add_to_tail_of_timer[4]: 0x2ab325999e80_ DEBUG: add_to_tail_of_timer[0]: 0x2ab325999ea0_ ERROR: w_t_relay (failure mode): forwarding failed_ A question regarding this trouble.....Can I disable use_dns_cache ? SER version is 0.9.7. What do you recommend? If you need my ser.cfg I can paste it... Thanks.. -- caio