Perhaps there is a message here that ARIN might pick up on some of the work done in the IETF PIER WG. This did produce RFC 2071 on why one wants to renumber (coauthored with Paul Ferguson) and RFC 2072 (my Router Renumbering Guide). At the time, no one in the WG really wanted to go after the application renumbering issues. I can barely spell HTML -- I'm just trying to get a basic webpage. Clearly, I am not the right person to spearhead an effort, but either ARIN, or perhaps the RIRs acting as a team, might do well to put out additional guidance on renumbering. After such guidance has been available for some time, the RIRs might reexamine their policies and see if what evolves as Best Current Practice should enter the policies. Is there active work on RFC 2050 bis? I haven't heard anything in a while. AFAIK, there's been no activity in ARIN CLEW for some time. -- Howard C. Berkowitz Chief Technology Officer and ARIN representative when I last looked Gett Communications 5012 25th Street South Arlington VA 22206 (703)998-5819 voice (703)998-5058 fax (alas, sometimes poorly operated by "helpful" cat)