subnet 10.6.0.0/24 admin lan (not used for voip) subnet 10.7.0.0/24 voip lan (used for voip) IP of registrar 1: 10.6.0.183/10.7.0.183 IP of registrar 2: 10.6.0.184/10.7.0.184 IP of registrar 3: 10.6.0.185/10.7.0.185 # # Ping from registrar3 (did not process the registration) # Also sending message over incorrect interface ignoring force_socket parameter of nathelper. # U 2017/10/24 08:30:34.075074 10.6.0.185:5060 -> 10.7.0.80:5062 OPTIONS sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP SIP/2.0. Via: SIP/2.0/UDP 10.6.0.185:5060;branch=z9hG4bK2759558. Route: . From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-161bf6e3. To: sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP. Call-ID: ba11235-4790b2e5-3a266c4@10.6.0.185. CSeq: 1 OPTIONS. Content-Length: 0. . # # Ping from registrar1 (did not process the registration) # Also sending message over incorrect interface ignoring force_socket parameter of nathelper. # U 2017/10/24 08:30:34.582416 10.6.0.183:5060 -> 10.7.0.80:5062 OPTIONS sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP SIP/2.0. Via: SIP/2.0/UDP 10.6.0.183:5060;branch=z9hG4bK8244078. Route: . From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-430c24e4. To: sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP. Call-ID: 9baec3c3-db68fb62-38f6df2@10.6.0.183. CSeq: 1 OPTIONS. Content-Length: 0. . # # Ping from registrar2 (this one processed the registration) # U 2017/10/24 08:30:44.575431 10.7.0.184:5060 -> 10.7.0.80:5062 OPTIONS sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP SIP/2.0. Via: SIP/2.0/UDP 10.7.0.184:5060;branch=z9hG4bK5442522. Route: . From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-941ff002. To: sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP. Call-ID: 72ea0177-d9e5d612-f68b4f4@10.7.0.184. CSeq: 1 OPTIONS. Content-Length: 0. . U 2017/10/24 08:30:44.576552 194.213.29.80:5062 -> 194.213.29.1:57360 OPTIONS sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP SIP/2.0. Max-Forwards: 10. Record-Route: . Record-Route: . Via: SIP/2.0/UDP 194.213.29.80:5062;branch=z9hG4bKc7a8.166d2735b5ea7d8bb297dc1f3b0e3900.0. Via: SIP/2.0/UDP 10.7.0.184:5060;rport=5060;branch=z9hG4bK5442522. From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-941ff002. To: sip:QYqWUnDJhxDJttkvUsJz@194.213.29.1:57360;rinstance=868b1645ead0e835;transport=UDP. Call-ID: 72ea0177-d9e5d612-f68b4f4@10.7.0.184. CSeq: 1 OPTIONS. Content-Length: 0. . U 2017/10/24 08:30:44.582088 194.213.29.1:57360 -> 194.213.29.80:5062 SIP/2.0 200 OK. Via: SIP/2.0/UDP 194.213.29.80:5062;branch=z9hG4bKc7a8.166d2735b5ea7d8bb297dc1f3b0e3900.0. Via: SIP/2.0/UDP 10.7.0.184:5060;rport=5060;branch=z9hG4bK5442522. Record-Route: . Record-Route: . Contact: . To: ;tag=9d7b572b. From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-941ff002. Call-ID: 72ea0177-d9e5d612-f68b4f4@10.7.0.184. CSeq: 1 OPTIONS. Accept: application/sdp, application/sdp. Accept-Language: en. Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE. Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri. User-Agent: Z 3.15.40006 rv2.8.20. Allow-Events: presence, kpml, talk. Content-Length: 0. . U 2017/10/24 08:30:44.582442 10.7.0.80:5062 -> 10.7.0.184:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.7.0.184:5060;rport=5060;branch=z9hG4bK5442522. Record-Route: . Record-Route: . Contact: . To: ;tag=9d7b572b. From: sip:keepalive@domain.com;tag=uloc-2-59eafc13-518-5b-ed34fbdb-941ff002. Call-ID: 72ea0177-d9e5d612-f68b4f4@10.7.0.184. CSeq: 1 OPTIONS. Accept: application/sdp, application/sdp. Accept-Language: en. Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE. Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri. User-Agent: Z 3.15.40006 rv2.8.20. Allow-Events: presence, kpml, talk. Content-Length: 0. .