Templin, Fred L wrote: >>>And why not NS? >> >>Because when A talks to B, you want A to do the MTU discovery >>and for B >>to "learn" the MTU too, but you don't want both sending MTU >>probes, only >>one of them needs to do so. > > > Disagree - PMTU probing is a unidirectional endeavor since the path > from A->B may have completely different characteristics than B->A.
But this isn't on a path, it's on the same L2. L2 traditionally is a spanning tree, or broadcast media so the assumption seems to hold. While asymmetric paths are common on a L3 path, they are rare on L2. -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
