IPv6 allocation plan, security, and 6-to-4 conversion

[Tore Anderson]

* William Herrin

> nat64/nat46 - allows an IPv6-only host to interact in limited ways
> with IPv4-only hosts. Don't go down this rabbit hole. This will
> probably be useful in the waning days of IPv4 when folks are
> dismantling their IPv4 networks but for now the corner cases will
> drive you nuts. Plan on dual-stacking any network which requires
> access to IPv4 resources such as the public Internet.

For many folks, that's easier said than done.

Think about it: If everyone could just dual-stack their networks, they
might as well single-stack them on IPv4 instead; there would be no
point whatsoever in transitioning to IPv6 for anyone.

Tore