I liked Tony Hain's suggestion that the future IETF terminal room/
wireless LAN ntworks should offer NATted IPv4 and plain IPv6, to
better reflect the choices available to much of the world.
i wish i could agree that they are, but the transition plan seems to
have a lot of nats in it. <sigh>
you should better practice using before IETF54 (Yokohama Japan),
as we may deploy IPv6-only terminal cluster :-):-):-)
seriously, with the address allocation policy/status in JP I guess
IETF54 term room may have to use IPv4 NAT or something alike.
If you use IPv6, you should be safe. So it's better to prepare today
than tomorrow.
itojun