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<p class="MsoNormal"><span style="color:#1F497D">Dear Răzvan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks again for the prompt help. I was able to change the headers as needed but I’m stuck with another problem(<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’ve got opensips with two Ethernet adapters, eth1 as a private and another one eth0 as public. Opensips works fine when the call is coming on the public eth0 and leaves opensips through the same public adapter.
(All the GWs are behind that public eth0 instead of one ). The problem happens when the call comes in through the private eth1, please see the drawing in attachment.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:windowtext"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">sip1. After I’ve got invite from provider on the private eth1 , I send it through the public eth0.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:windowtext"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">sip2. I use force_send_socket(udp:PUBLIC_IP:PORT) for the call to be able to pass through the opensips and come back from external GW (x.x.82.139). I also change SIP Request's URI and use uac_replace_to
() to change these fields as needed. <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:windowtext"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">sip4. Opensips has got 180 Ringing from external GW (x.x.82.139)
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:windowtext"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">sip5. Opensips tries to send it back to originator (10.250.242.74) which is behind private NIC eth0 (10.197.26.170)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">the call can not be set up because I send reply from my public eth1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext">2016-11-16 18:56:14 : x.x.80.43:5060 -> 10.250.242.74:5060<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext">SIP/2.0
</span><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:red">180</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext"> Ringing Via: SIP/2.0/UDP 10.250.242.74:5060;branch=</span><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:green">z9hG4bKqci5ec</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D">
</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext">Record-Route: <<a href="sip:x.x.80.43;r2=on;lr;ftag=2F81324631353641A405EA00;did=3a2.4667b68">sip:x.x.80.43;r2=on;lr;ftag=<b>2F81324631</b>;did=3a2.4667b68</a>>
Record-Route: <<a href="sip:10.197.26.170;r2=on;lr;ftag=2F81324631353641A405EA00;did=3a2.4667b68">sip:10.197.26.170;r2=on;lr;ftag=<b>2F81324631</b>;did=3a2.4667b68</a>> From:
<a href="sip:300940@domain.com;tag=2F81324631353641A405EA00">sip:300940@domain.com;tag=<b>2F81324631</b></a> To:
<a href="sip:300905@domain.com:5060;tag=231469dIr894p0D461D0t66">sip:300905@domain.com:5060;tag=231469dIr894</a> Call-ID:
</span><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:blue">020A3EA03A8@SFESIP4-id1-ext</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext"> CSeq: 1 INVITE Contact: <<a href="sip:54321@x.x.82.139:5060">sip:54321@x.x.82.139:5060</a>>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m not sure if I do it right way because the packet (sip5) goes to 10.250.242.74 with the source ip of public eth0 and not the one it should pass through to be able to come back.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">What is the right way in my case to get the call through?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thank you for all of your help,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Ehrny<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
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