<div>Hi All !</div>
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<div>I was running Opensipserver version 1.4.2 past 2 years without any problem. </div>
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<div>The topology is </div>
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<div dir="ltr" align="left"><font face="Arial" color="#0000ff" size="2"><span class="633420723-04062010">UE1(v6) ---------------->(v6)SIPProxy(v4)------------->(v4)OpenSer(v4)----------->(v4)SIPProxy(v6)------------->(v6)UE2</span></font></div>
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<div>The problem started with UE orginating from IPV6 address and trying to register with Opensip server running on IPV4 address. The registration works fine, problem creeps up with Invite message from Caller, the invite response is throwing "<span style="FONT-WEIGHT: bold">477 send failed(477/TM)</span>" . </div>
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<div>The following SIP call flow events on Callee leg... 100 Trying, 180 ringing, 200 OK are showing up good.</div>
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<div>The Log Messages indicate the following:</div>
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<div>Jun 7 11:12:00 sys-pc2-new /usr/local/sbin/opensips[13248]: new branch at sip:410001@[3ffe::2:0:e9ff:fee0:8ced];EriBindingId=6<br>Jun 7 11:12:00 sys-pc2-new /usr/local/sbin/opensips[13248]: ERROR:core:udp_send: sendto(sock,0x2b8fcfcb7cc0,1053,0,0x2b8fcfcb4b40,28): Address family not supported by protocol(97)<br>
Jun 7 11:12:00 sys-pc2-new /usr/local/sbin/opensips[13248]: ERROR:tm:msg_send: udp_send failed<br>Jun 7 11:12:00 sys-pc2-new /usr/local/sbin/opensips[13248]: ERROR:tm:t_forward_nonack: sending request failed<br>Jun 7 11:12:00 sys-pc2-new /usr/local/sbin/opensips[13248]: ACC: call missed: timestamp=1275934320;method=INVITE;from_tag=h7g4Esbg_42AA5AB;to_tag=;call_id=18f4a901@3ffe::1:0:28ff:fe88:8b81;code=477;reason=Request Failure<br>
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<div>Apprciate the help in fixing this problem.</div>
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<div>Thanks,</div>
<div>Rvrao</div>