[Blink] SIP Problem with private IP addr

Adrian Georgescu ag at ag-projects.com
Mon Nov 8 18:24:35 CET 2010


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On Nov 7, 2010, at 8:56 PM, Fabrice Rochette wrote:

> Hi BLINK team,
> I'm trying 0.20.2 on 10.6.4.
> 
> I'm trying to setup a SIP account. The SIP server is behind a VPN tunnel (which is configured properly), no NAT, only direct private range routing.
> On my mac I have several interfaces and several local IP addr.
> 
> I have 2 interfaces, en1 and tun0.
> 
> I'm trying to connect to 172.18.0.5 which is behind tun0.
> route : 172.18/24          10.20.20.5         UGSc            2        0    tun0
> 
> en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> 	inet 192.168.0.12 netmask 0xffffff00 broadcast 192.168.0.255
> 	media: <unknown subtype>
> 	status: active
> tun0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> 	inet 10.75.75.6 --> 10.20.20.5 netmask 0xffffffff 
> 	open (pid 82632)
> 
> When I try to register, the IP 10.20.20.6 should be sent in the SIP msgs. What I'm seeing in the logs is that the 192.168.0.12 is included instead of the 10.20.20.6.
> 
> SENDING: Packet 214, +0:16:35.492415
> 2010-11-07 20:49:17.539795: 192.168.0.12:53845 -(SIP over UDP)-> 172.18.0.5:5060
> SUBSCRIBE sip:1777 at 172.18.0.5 SIP/2.0
> Via: SIP/2.0/UDP 192.168.0.12:53845;rport;branch=qwerty
> Max-Forwards: 70
> From: "Fabrice Rochette" <sip:1777 at 172.18.0.5>;tag=abcd
> To: <sip:1777 at 172.18.0.5>
> Contact: <sip:deadbeef at 10.20.20.6:53845>
> Call-ID: uiguggiu
> CSeq: 29653 SUBSCRIBE
> Route: <sip:172.18.0.5;lr>
> Event: message-summary
> Expires: 3600
> Accept: application/simple-message-summary
> Allow-Events: presence.winfo, message-summary, xcap-diff, presence
> User-Agent: Blink 0.20.2 (MacOSX)
> Content-Length:  0
> 
> 
> 
> Any clue?
> 
> Thanks for your feedback.
> 
> Cheers,
> 
> Fabrice
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