[Serdev] ipv6 to ipv4 proxying

[Maxim Sobolev]

You will have to use nathelper/rtpproxy for this. The latest version 
from the cvs supports so-called "bridge" mode, so that it can act as a 
gateway between two networks. There is even a sample config file 
available modules/nathelper/examples/4to6.cfg for such functionality.

-Maxim

Bert Vermeulen wrote:

> Hi,
> 
> I have the following scenario:
> 
> IPv6-aware client  -->  SER -->  IPv4-only client (registered with SER)
> 
> The first client makes its request to SER in IPv6, but also passes along 
> its IPv6 address in the INVITE, in the connection info. SER passes this 
> along to a client that doesn't know how to deal with IPv6 at all. 
> However it accepts the request and ACKs it; it just fails to establish 
> an RTP stream.
> 
> The first client isn't wrong to use IPv6 in its connection info, and the 
> second client should certainly be reachable by the first, IPv6 or no.
> 
> Since SER has knowledge that the second client doesn't support IPv6 (it 
> registered via IPv4), it seems to me SER should rewrite the connection 
> info in the INVITE, to make it IPv4.
> 
> So my question is twofold: do the SER developers agree this is the way 
> to go? Second, not being familiar with the source, I'm not sure where 
> such functionality would go... hints welcome.
> 
> 
> Bert Vermeulen
> bert at biot.com
> 
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