About subnetting below /64, here is a quote from "ARIN Guidelines for Requesting Initial IPv6 Address Space" http://www.arin.net/regserv/ipv6/ipv6guidelines.html
"The host portion of an IPv6 address is represented by the rightmost 64 bits of the address. A /64 SLA ID is the shortest network prefix that can be assigned to a site. The boundary between the network and host portions is "hard" and cannot be further subdivided." Michel. -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------