Re: [ppml] Policy Proposal: IPv6 Assignment Size Reduction

[David Conrad <david.conrad@icann.org>]

On 10/30/07 2:53 PM, "Brian Dickson" <briand@ca.afilias.info> wrote:
> I have, however, argued that ISPs returning to RIRs for PA blocks, is
> bad for the Internet.

Only if those new PA blocks can't be aggregated.

> Avoiding repeat PA assignments to ISPs, is the *primary* motivation for
> the proposals, both at the IETF (6man) and ARIN (ppml).

The simplest way to do reduce the impact of multiple PA assignments would be
for the RIRs to assign address space in a sparse fashion such that
additional allocations could be done by simply subtracting a bit from the
allocated prefix length.  In fact, the RIRs promised to do this when the
/12s were allocated by IANA (last I checked, however, only APNIC was doing
it).

Regards,
-drc