If it is eth0 of the same server, then is the kernel sending via loopback interface at it detects the destination is itself.

You should paste here ngrep with the sip traffic from invite to bye in order to give more hints about what is going wrong there.

Cheers,
Daniel

On 8/28/13 3:09 PM, Marc Soda wrote:
I think I found my missing ACKs!  Can anyone tell me why they work be being sent to the loopback interface?  The destination address is still the external (eth0) IP.


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