The author of the RFC has clarified (personal communication, posted with permission) that the intention was never to prohibit jumbo frames, but rather:
It is only supposed to mean that Router Advertisements cannot increase the MTU above whatever it was otherwise believed to be, and that in the absence of configuration information (including DHCP), it is presumed to be 1500. "Please include the admission that perhaps it could have been clearer. Remember the old "We'll fix it in Draft" mantra that used to be the ipngwg refrain?" -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
