A draft on this topic has been updated: http://www.ietf.org/internet-drafts/draft-carpenter-renum-needs-work-02.txt Comments and discussion are invited on the OPS Area list, ops-area at ietf.org Brian Carpenter Ran Atkinson Hannu Flinck P.S. Apologies if you receive multiple copies, but that seems preferable to cross-posting to multiple lists.