It seems that the IETF has caught up with us and has formally shut down
the PIER wg.
I am aware that there were a couple of unfinished items and there have
recently been some
questions on renumbering documents that did not quite make it out of the
we were closed down. Also, there is apparently a move to view renumbering
as a migration
stratagy for IPv6.
If there is enough interest in revisting what PIER has done or might do,
esp. wrt. IPv6
migration and/or compliance w/ addressing registry or provider delegation
policies, I'd appreciate
hearing from you.