In your previous mail you wrote: 1) Is it safe to assume that all IPv6 prefixes will be between 16 and 64 bits long? The current allocation of IPv6 prefixes seems to require Aggregatable Global Unicast Addresses, which restricts the prefixes to this range. => if this seems to be safe today you may *not* assume this will remain safe in the future, conclusion: this is not safe.
2) Is it possible for two hosts with the same interface ID (lower 64 bits) to have different prefixes (upper 64 bits) in their addresses? The v6 standards indicate that the interface ID does not always have global scope, so the answer appears to be yes. => yes, I know at least 10 boxes with the 1 interface ID and near the same number with 2. But I believe there are hundreds or thousands... (BTW only a small fraction of them are hosts (i.e. not routers)) Regards [EMAIL PROTECTED] -------------------------------------------------------------------- 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] -------------------------------------------------------------------- -------------------------------------------------------------------- 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] --------------------------------------------------------------------
