On Feb 29, 2008, at 7:31 AM, Kevin Kargel wrote: > To make a furthur rediculous analogy, SMTP is a wonderfully > functional spec, and it makes perfect sense to mandate that any > devices > utilizing SMTP MUST be compliant to the ESMTP spec RFC2821, but it > would > be rather silly to mandate that ALL IPv6 connected devices be RFC2821 > compliant regardless of whether they have a requirement for SMTP.
I'm not an SMTP expert, but if I understand your comments correctly I think your analogy actually supports a MUST for IPsec for all IPv6 nodes. 1. "Node running SMTP MUST support ESMTP, and enhanced profile of SMTP with additional functionality" is similar to... 2. "Node running IPv6 MUST support IPsec, an enhanced profile of IPv6 with additional functionality" Besides, analogies to mechanisms above or below IP are only partly useful, if you indeed believe that IP is a special part of the stack (the waist, the consensus, the common convergence layer, etc.) R, Dow -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
