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<p class=MsoNormal><span lang=EN-US>Hello! I have some trouble with nat
handling.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I have such scheme:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>uac1---opensips---(NAT)---uac2<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I call to UAC2 and signaling establishment
is ok. Whenš UAC2 sends BYEš opensips translates 200OK (received from UAC1) to
the wrong port. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>BYE generated by UAC2 has such via header:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>“Via: SIP/2.0/UDP
192.168.18.137:5060;branch=z9hG4bK8b517b11a415”<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>and the BYE comes from U 2013/04/04
17:21:50.287792 1.1.1.1:59292 -> 2.2.2.2:5068<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Where 1.1.1.1 – nat, 2.2.2.2 -
opensips<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Opensips adds one more via header to the
BYE:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Via: SIP/2.0/UDP
2.2.2.2;branch=z9hG4bK7f45.debc1592.0. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>and changes first via header by adding
received field:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Via: SIP/2.0/UDP
192.168.18.137:5060;received=1.1.1.1;branch=z9hG4bK8b517b11a415<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>200 OK got from UAC1 opensips tries to send
not to 1.1.1.1:59292 but to 1.1.1.1:5060<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The question is how can we make opensips to
send 200 OK to 59292 port?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thank you for any help.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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