>Ahh, it doesn't have to damage routing transparency.   If we were to use
>a signaling protocol that is carefully crafted to preserve routing
>transparency (e.g. RSVP) then we can avoid this issue.

That's what I'm working on, but midcom and upnp as they're
currently defined most certainly do have routing-related
problems.

>The upnp guys are not really thinking of damaging routing transparency.

Of course they weren't.  But the assumptions that the network
is single-homed and that there's only one NAT in the path and
that there are no firewall interactions are inherently non-
general, and any assumption that they fix "the" problem is
necessarily incorrect.  Seeing this stuff touted as a general-
purpose fix makes me very uncomfortable.

Melinda


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