Potential Addressing Issue

[Tom Taylor]

I was going over my notes for the IETF MMUSIC session last week, and
came across an item which may be an issue for H.323.  Thanks to the
presence of Network Address Translation (NAT) in the net, an endpoint
doesn't necessarily know its true network address.  (NAT boxes translate
between local addresses and public ones invisibly to the hosts
concerned.)  Thus the address an H.323 endpoint sends out during
registration with the Gatekeeper may be bogus.