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

Klaus Darilion klaus.mailinglists at pernau.at
Mon Jan 3 02:51:53 CST 2011

> I have no examples of maddr, but here's the one from the RFC:
> Via: SIP / 2.0 / UDP first.example.com: 4000;ttl=16;maddr= ;branch=z9hG4bKa7c6a8dlze.1
> Since this has a ttl value, the maddr is supposed to be multicast.

Btw: Has anybody ever seen usage of maddr or can describe to me what it 
is useful for? I always thought I'm quite familiar with SIP, but still I 
do not understand why maddr is needed at all.


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