Guys,<br><br>I&#39;m successfully using a Kamailio + RTPproxy setup in bridge mode with most of my Gateways. My setup includes two different interfaces one with a public IP and teh other with the private IP.<br><br>Now I&#39;m facing some slight issue. Some providers won&#39;t accept my calls (or calls will have some strange behavior) if the Contact header has an IP out of immediate range.<br>
<br>I tried to use fix_nated_contact() function but as per my topology, this function will not change the contact header because the IP is already the one on the interface.<br><br>Example:<br>U 192.168.200.X:5060 -&gt; 192.168.200.Y:5060<br>
INVITE sip:111160911097@192.168.200.Y SIP/2.0.<br>Via: SIP/2.0/UDP 192.168.200.X:5060;branch=z9hG4bK096baacc;rport.<br>From: &quot;Uriel Rozenbaum&quot; &lt;sip:60911100@192.168.200.X&gt;;tag=as32794d5e.<br>To: &lt;sip:111160911097@192.168.200.Y&gt;.<br>
Contact: &lt;sip:60911100@<b style="color: rgb(255, 0, 0);">192.168.200.X</b>&gt;.<br><br>U 200.A.A.A:5060 -&gt; 200.B.B.B:5060<br>INVITE sip:898960911097@200.B.B.B SIP/2.0.<br>Record-Route: &lt;sip:200.A.A.A;r2=on;lr=on;ftag=as32794d5e&gt;.<br>
Record-Route: &lt;sip:192.168.200.Y;r2=on;lr=on;ftag=as32794d5e&gt;.<br>Via: SIP/2.0/UDP 200.A.A.A;branch=z9hG4bK5222.14fbf4f7.0.<br>Via: SIP/2.0/UDP 192.168.200.X:5060;received=192.168.200.X;branch=z9hG4bK096baacc;rport=5060.<br>
From: &quot;Uriel Rozenbaum&quot; &lt;sip:60911100@192.168.200.X&gt;;tag=as32794d5e.<br>To: &lt;sip:111160911097@192.168.200.Y&gt;.<br>Contact: &lt;sip:60911100@<b style="color: rgb(255, 0, 0);">192.168.200.X</b>&gt;.<br>
<br>Is there any way to let know Kamailio the outgoing IP I&#39;ll be using and fix the contact accordingly?<br>I can trigger this change after I know the destination IP.<br><br>Thanks!<br>Uriel<br><br>