Have you tried other softphones? Had a similar issue with MicroSIP over NAT (not using docker) and when using Zoiper all worked fine. I have always used MicroSIP, but sometimes, it can be tricky....
Atenciosamente / Kind Regards / Cordialement / Un saludo, *Sérgio Charrua* On Mon, Jul 28, 2025 at 6:22 PM Fernando Lopes via sr-users < sr-users@lists.kamailio.org> wrote: > Hello everyone, > > I'm having some issues with SIP when the VPN is active. > I'm running a Docker container inside WSL. My WSL IP is 172.31.217.74, and > my machine's IP is 192.168.1.77. When I connect to the VPN, I get the IP > 192.168.1.129. > > When I place a call, I see this log. I've tried disabling ICE, setting the > public IP of the SIP server in MicroSIP, and manually specifying my local > machine IP. This does change the c= and a= parameters in the SDP, but it > still doesn't work. > > Everything works fine without the VPN. I need the VPN active to access > certain endpoints, but SIP stops working once it's connected. > > INVITE sip:100@localhost;transport=tcp SIP/2.0 > Via: SIP/2.0/TCP 172.31.208.1:54367 > ;rport;branch=z9hG4bKPjb591721e91454d2bae56a9edfc645ebe;alias > Max-Forwards: 70 > From: "6001" <sip:6001@localhost>;tag=daa078657d2949e68935f308beeb8b89 > To: <sip:100@localhost> > Contact: "6001" <sip:6001@172.31.208.1:54367;transport=TCP;ob>;+sip.ice > Call-ID: 49c169a9e92d4b23ad70709636ccab4f > CSeq: 13400 INVITE > Route: <sip:172.31.217.74;transport=tcp;lr> > Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, > REFER, MESSAGE, OPTIONS > Supported: replaces, 100rel, timer, norefersub > Session-Expires: 1800 > Min-SE: 90 > User-Agent: MicroSIP/3.21.6 > Content-Type: application/sdp > Content-Length: 1345 > > v=0 > o=- 3962710251 3962710251 IN IP4 192.168.1.129 > s=pjmedia > b=AS:84 > t=0 0 > a=X-nat:0 > m=audio 4030 RTP/AVP 8 0 96 97 98 9 99 100 101 102 103 > c=IN IP4 192.168.1.129 > b=TIAS:64000 > a=rtcp:4001 IN IP4 192.168.1.129 > ... > a=ice-ufrag:1d266809 > a=ice-pwd:2f7e2ef6047a47d832ed0f55 > a=candidate:Hc0a80181 1 UDP 2130706431 192.168.1.129 4030 typ host > a=candidate:Hc0a8014d 1 UDP 2130706175 192.168.1.77 4030 typ host > a=candidate:Hc0a83801 1 UDP 2130705919 192.168.56.1 4030 typ host > a=candidate:Hac1fd001 1 UDP 2130705663 172.31.208.1 4030 typ host > a=candidate:Hc0a80181 2 UDP 2130706430 192.168.1.129 4001 typ host > a=candidate:Hc0a8014d 2 UDP 2130706174 192.168.1.77 4001 typ host > a=candidate:Hc0a83801 2 UDP 2130705918 192.168.56.1 4001 typ host > a=candidate:Hac1fd001 2 UDP 2130705662 172.31.208.1 4001 typ host > > Does anyone know where the problem may be? > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions -- > sr-users@lists.kamailio.org > To unsubscribe send an email to sr-users-le...@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender! >
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