According to RFC 5969 for 6rd: " Embedding less than the full 32 bits of a CE IPv4 address is possible only when an aggregated block of IPv4 addresses is available for a given 6rd domain. This may not be practical with global IPv4 addresses, but is quite likely in a deployment where private addresses are being assigned to CEs. " So the /64 limitation for 6rd applies when an aggregated block of IPv4 addresses is not being used. Regards, -Ahmed From: Daniel Roesen Sent: Tuesday, March 01, 2011 1:15 AM To: address-policy-wg@ripe.net Subject: [address-policy-wg] Re: IPv6 allocations for 6RD On Mon, Feb 28, 2011 at 02:44:53PM +0200, Ahmed Abu-Abed wrote:
Note that the /64 limitation is specific to 6RD protocol as I explained in an earlier email.
I fail to find this email, could you provide archive pointers or explain again? I'm not aware of any instrinct /64 limitation of 6RD, and existing implementations prove the contrary. Best regards, Daniel -- CLUE-RIPE -- Jabber: dr@cluenet.de -- dr@IRCnet -- PGP: 0xA85C8AA0