[asterisk-users] no rtp after dns query

[marek cervenka]

hi,

i have strange problem with no rtp packets from asterisk after dns 
query. see pcap below

centos6/asterisk 13.9 + chan_sip

172.23.0.3 - asterisk

172.23.5.1/2 - voip phones


any ideas/hints?


1170 25.028206000   172.23.0.3 -> 172.23.5.1   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x334508F6, Seq=49318, Time=1442112256
1171 25.045556000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4468, Time=716240
1172 25.045629000   172.23.0.3 -> 172.23.5.2   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x3566361, Seq=60990, Time=716240
1173 25.048134000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=274, Time=1442112421
1174 25.048207000   172.23.0.3 -> 172.23.5.1   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x334508F6, Seq=49319, Time=1442112416
1175 25.065362000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4469, Time=716400
1176 25.065441000   172.23.0.3 -> 172.23.5.2   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x3566361, Seq=60991, Time=716400
1177 25.068138000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=275, Time=1442112581
1178 25.068214000   172.23.0.3 -> 172.23.5.1   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x334508F6, Seq=49320, Time=1442112576
1179 25.085427000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4470, Time=716560
1180 25.085500000   172.23.0.3 -> 172.23.5.2   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x3566361, Seq=60992, Time=716560
1181 25.088133000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=276, Time=1442112741
1182 25.088207000   172.23.0.3 -> 172.23.5.1   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x334508F6, Seq=49321, Time=1442112736
1183 25.099395000   172.23.5.2 -> 172.23.0.3   RTCP 94 Sender Report
1184 25.099569000   172.23.0.3 -> 172.16.1.20  DNS 78 Standard query 
0xd853  A pbx.somewhere.com
1185 25.099591000   172.23.0.3 -> 172.16.1.20  DNS 78 Standard query 
0xeb9f  AAAA pbx.somewhere.com
1186 25.100211000  172.16.1.20 -> 172.23.0.3   DNS 94 Standard query 
response 0xd853  A 172.23.0.3
1187 25.105456000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4471, Time=716720
1188 25.108153000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=277, Time=1442112901
1189 25.125115000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4472, Time=716880
1190 25.128169000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=278, Time=1442113061
1191 25.145232000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4473, Time=717040
1192 25.148169000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=279, Time=1442113221
1193 25.165214000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4474, Time=717200
1194 25.168169000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=280, Time=1442113381
1195 25.185212000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4475, Time=717360
1196 25.188194000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=281, Time=1442113541
1197 25.205216000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4476, Time=717520
1198 25.208164000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=282, Time=1442113701
1199 25.225149000   172.23.5.1 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x643C9869, Seq=4477, Time=717680
1200 25.228177000   172.23.5.2 -> 172.23.0.3   RTP 214 PT=ITU-T G.711 
PCMA, SSRC=0x8B41FC0A, Seq=283, Time=1442113861