[Asterisk-Users] Asterisk chooses invalid outgoing interface (IAX2, virtual interfaces)

[Stefan Reuter]

Peter Svensson wrote:
> I think the complaint is that asterisk does not use the destination
> address for the incoming request packet as the source address for the 
> outgoing packet holding the reply. This will prevent the requestor from 
> matching the quadtuple (src addr, dst addr, src port, dst port) which 
> is usually used to identify a conversation. Tcp handles this transparently 
> but for udp it is the responsibility of the application.

yes thats exactly the problem. it uses a different source address in the 
reply than the destination address of the original packet and that 
causes some clients to discard the packet.

stefan