Re: (ngtrans) Re: ipv6-smtp-requirement comments?

I second the reality view of Dan Bernstein, and:

In the message <20011112210939(_dot_)1915(_dot_)qmail(_at_)cr(_dot_)yp(_dot_)to>
at Mon, Nov 12, 2001 at 09:09:17PM -0000,
"D. J. Bernstein" <djb(_at_)cr(_dot_)yp(_dot_)to> writes:
> Under the RFC 2893 transition plan, the existing IPv4 address space is
> included in the IPv6 address space. If this is done properly, it can
> entirely eliminate the administrative hassle.
And from the programming point of view, using IPv4-mapped IPv6 address
space (::ffff:/96, RFC2373 Section 2.5.4) can eliminate the issues on
running an IPv6 program on an IPv4-only node.  djbdns with this
modification runs happily on an IPv4-only environment, though it treats
IP addresses as uniformed 128bit integers internally.

As Dan writes, the IPv4 address space should be fully included in the
IPv6 address space.

// Kenji Rikitake