[ppml] trade in your IPv4 block for an IPv6?

[Owen DeLong]

I like the idea, but, for it to be practical today, I think we'd need
to specify the return date in terms of events rather than time.

I don't think anyone will be willing to migrate off of their V4 space
until such time as adequate 6to4 connectivity exists to guarantee
that they do not lose connectivity to some significant portion of
the internet by removing the V4 addresses from their machines.

Owen


--On October 28, 2005 7:01:07 AM +0000 Paul Vixie <paul at vix.com> wrote:

> what if someone could get PI IPv6 space by agreeing to return PI IPv4
> space?
>
> not the same day, mind you.  within two years, perhaps.  or five years.
> an exchange rate would have to be established, like "if you return a V4
> /16, we will give you a V6 /48" or even "we'll give you a V6 /(49-N) for
> the N V4 /16's you return".  the goal would be to shrink or keep stable
> the size of the routing table in dual stacked routers, while getting V4
> space back that we can use for address lifetime extension later when V4
> space gets short.
>
> (i'm trying to think of some early adopter advantages that would have
> beneficial side effects.)
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