10 jul 2012 kl. 20:50 skrev Kevin P. Fleming:

> On 07/10/2012 03:24 AM, Olle E. Johansson wrote:
> 
>> The Asterisk SIP channel has no knowledge about interfaces and can't
>> bind to a specific interface for communication. In fact, it's a well known
>> bug that if you have multiple interfaces with different IP networks,
>> Asterisk will send from the wrong IP on some of the interfaces.
> 
> Are you sure about that? The only problem area that I'm aware of is when 
> there are multiple *overlapping* interfaces (on the same subnet, or providing 
> the same route(s)). In that case, Asterisk can receive messages on one IP 
> address out of the overlapping set, but reply using a different one from the 
> set, because it doesn't specify the source IP address and instead lets the 
> UDP/IP stack select one.
> 
> If the interfaces don't overlap in any way, I don't see how it would be 
> possible for Asterisk to send messages with the wrong source IP address, 
> since it does not specify the source IP address at all. If this is occurring, 
> it must involve the operating system's IP stack in some fashion.

Yes, I still use quite a lot of IPtables tricks to overcome this issue.

/O
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