ARIN IP6 policy for those with legacy IP4 Space

Wed Apr 7 22:54:44 UTC 2010

I kind of thought that was something that had already been worked out.

Thats what I get for not paying close enough attention.

----- Original Message ----- 
From: "Deepak Jain" <deepak at ai.net>
To: "Lee Howard" <lee at asgard.org>; "'Gary E. Miller'" <gem at rellim.com>; "'OwenDeLong'" <owen at delong.com>
Cc: "'NANOG list'" <nanog at nanog.org>
Sent: Wednesday, April 07, 2010 5:31 PM
Subject: RE: ARIN IP6 policy for those with legacy IP4 Space

Now I may be talking crazy...

IIRC, all of IPv4 space maps to a section of IPv6 space.

<mad hat on>

If one has legacy IPv4 space, but actually talks IPv6 couldn't one announce a prefix much longer than a /64 to map them onto the 
IPv6 universe (assuming people would allow such craziness... perhaps on their IPv4 speaking routers) and originate/terminate traffic 
as normal?

</mad hat off>

Isn't this all left to the networks to enforce, as usual, but unlike the status quo, these are all valid allocations...

Technical note: I know this breaks lots of IPv6 goodness (no need to enumerate it here).

DJ