[ppml] IPv6 PI space for addressing

[Michael.Dillon at btradianz.com]

> I've been watching the debate over IPv6 PI space for well over a year
> (mostly on NANOG), and one thing stands out to me.  Many moons ago, if 
an
> organization intended to run IPv4 in their network, they could secure an
> IPv4 allocation even if they did not intend to route that prefix over 
the
> Internet.

They still can.

> I believe address depletion is still a valid concern with IPv6, and the
> draft policies do address this concern.  However, I believe the 
restrictions
> on IPv6 PI space should recognize the need for such space outside of the
> Internet routing table.

Once an LIR has a /32, nobody says that they have to route all
of it. They may announce all of it for convenience, but they
are free to blackhole all incoming traffic if they want.

--Michael Dillon