IPv4 sunset date revised : 2009-02-05

Sat Oct 23 05:57:25 UTC 2010

> Sent: Friday, October 22, 2010 1:37 PM
> To: George Bonser
> Cc: bmanning
> Subject: Re: IPv4 sunset date revised : 2009-02-05
> 
> 	anyone still not paying attention?  (read the CERNET2 reports
> 	on the costs of dual-stack...) Native may be your best long
> 	term bet.
> 
> --bill

That is a point I have made with people at times, too.  If you are
struggling holding the current table of 32-bit routes, what is the
addition of a bunch of 128-bit routes going to do?  Full routes
dual-stack is going to hurt people in a lot of places.  This was another
reason for aggressively reclaiming unused IP addresses without issuing
any new, it would reduce the extent to which v4 could continue to frag.

It will be sort of like a bulge moving through a snake for a while as
the v6 table begins to grow with multihomed /48's and the v4 table also
grows with increased fragmentation.  And "Katy, bar the door" if they
take away the multihomed restriction for GU /48's.  