Re: Important IPv6 Policy Issue -- Your Input Requested

["Steven M. Bellovin" <smb () research att com>]

In message <20041108195312.GA91916 () ussenterprise ufp org>, Leo Bicknell writes:
> In a message written on Mon, Nov 08, 2004 at 02:36:21PM -0500, Joe Abley wr=
> ote:
> > Just out of interest, why do you think 1918-style space for v6 is=20
> > needed?
>
> I think people have found many good uses for IPv4 1918 space, and
> that it is likely they would want to migrate those applications as
> directly as possible to IPv6.  Since supporting that sort of migration
> does not require a huge amount of address space or burden on the
> addressing processes, I see no reason not to have 1918 space in
> IPv6.
>
> However, both of these proposals go well beyond how 1918 space works
> today, and both make promises of "global uniqueness" that are at
> best inappropriate, at worst a road to disaster.

There are cetainly main uses; one can quibble over whether or not 
they're "good"...

That said, see draft-ietf-ipv6-unique-local-addr-07.txt
In not very different form, it's likely to be approved soon by
the IESG.

                --Steve Bellovin, http://www.research.att.com/~smb