> >>         
> >>         I think I agree with both views, which are a) We need to
> >>         address cases where the customer uses dynamic addresses and
> b)
> >>         using STUN is not a very reliable way to discover the
> external
> >>         address.
> >>         
> >>         However, it seems to me that in exactly those 
> cases where the
> >>         customer has a small network with only one gateway to the
> >>         Internet using a dynamic address STUN would be 
> quite reliable
> >>         to discover this external IP address. STUN becomes more
> >>         unreliable in larger networks with several gateways, but in
> >>         these cases it is much more likely that the customer uses a
> >>         fixed IP address assigned by the ITSP.
> >
> >The caveat with STUN discovery is that it won't always give you the 
> >right answer unless the the STUN server is at the same IP address as
> the
> >thing you want to send to.
> >
> >So if your ITSP has STUN in their proxy, you're good - if not, you
> might
> >sometimes get the wrong answer by querying a STUN server 
> somewhere else 
> >(especially with respect to the ports).
> >
> 
> Ok, that makes sense. My vote would be then to let the admin 
> take that decision and not second guess them. 
> 
> I think sipXbridge can already use STUN as an option. What 
> about the NAT traversal feature in the proxy?

I just commited changes to the merge_proxy branch (r12946) that adds
support for STUN.  I also re-opened XCF-2181 to request the management
changes related to that new feature. 
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