On Sat, 26 Jul 2008, Brian E Carpenter wrote:
In any case I think the notions of "internal" and "external" are not well-defined in a network which mixes regions of pure IPv6, regions of pure IPv4 and dual-stack regions. Also, NAT terminology tends to be based on the distinction between private ambiguous and public global addresses, which makes no sense for IPv6.
FWIW, it's possible to build a router (or NAT) that has a single logical interface. The draft assumes at least two interfaces. Not that such boxes are very widely deployed in practise.. :-)
-- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings