[asterisk-dev] Via/maddr: (was Re: [Code Review] Properly route responses according to the Via headers in the request)

[Klaus Darilion]

Am 03.01.2011 21:05, schrieb Simon Perreault:
> On 01/03/11 12:30, Klaus Darilion wrote:
>> Actually they can rather easy tell you where to send response - they
>> just have to send from this certain IP address (in case of UDP).
>>
>> Thus I think maddr is a "bug".
>
> maddr is intended to contain a multicast address. In general you can't
> just use this kind of address as source without breaking a ton of other
> things (e.g. ICMP replies come to mind).

Ok, this makes sense. But why should a response be sent to a multicast 
address at all?