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Re: [Linphone-users] invalid SDP on PC with two interfaces

From: Rasmussen, Marc
Subject: Re: [Linphone-users] invalid SDP on PC with two interfaces
Date: Thu, 21 Apr 2011 10:41:22 +0200


I have the same problem (but I don't have two physical interfaces but one physical and two interfaces created by VMware).
But since I only use a SIP server within my network I was able to get rid of this problem by installing a STUN server (which I have had to install anyway bevause I use that SIP server through a VPN connection too).

I think it would be a nice to have if it was possible to select the interface which Linphone is using. Which, by the way, would be a nice feature in the Android client too.

Kind regards,

2011/4/20 Сергей Пачков <address@hidden>
On my Windows XP PC I have two ethernet cards with IPs: and

I (A-side) call to address@hidden (B-side). Route table has rule to send packets through

SIP  INVITE sends from and SIP negotiation looks FINE but in INVITE/SDP connection field

and side B of call will send RTP to which isn't accessable from B-side.
in this case B-side will listen A-side but A-side wouldn't listen B-side.

It will be nice when SDP part will contain proper connection line with IP which LinPhone uses to communicate with B-side.

In this case LinPhone sends everything from but in SDP it points RTP to (this is wrong)

in attachment I placed network dump gathered by WireShark

/Sergey Pachkov

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