On 07/28/2014 08:48 AM, Nicholas Weaver wrote: >> >> There are many good reasons to use TCP but, in that case, I do not >> see why we need it. First, IPv6 users typically don't use >> extension headers and, second, if the problem is in IP, why would >> changing from UDP to TCP work? > > Because the big issue is fragments: The IPv4 net decreed “Fragment’s > don’t really work”. The IPv6 net has decreed “No, really, FRAGMENTS > DO NOT WORK”. > > The solution is to detect and fallback on EDNS0 MTU to retry at 1400B > first (rather than directly down to 512b), and properly handle > truncation. But you do that, and things do work.
Is this standard behavior, or rather an implementation thing? (ie.., t what extent may one expect this mechanism to be widely implemented?) Thanks, -- Fernando Gont e-mail: [email protected] || [email protected] PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1 _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
