On 8/29/2016 3:51 PM, Fernando Gont wrote: > Where in the texxt do we say "you shouldn't use fragmentation in general"? It's the implication that follows from justifying this change based on whether frag EHs are dropped. IMO, that's simply irrelevant. The broader problem is using IPv6-generated IDs, which are not generated to be compliant in their bottom 16 bits with IPv4. That alone is more than sufficient rationale for not using this mechanism. Joe