Joe Maimon wrote: > pMTU has been broken in IPv4 since the early days.
> It is still broken. It is also broken in IPv6. It will likely > still be broken for the forseeable future. This is > Relying on ICMP exception messages was always wrong for normal network > operation. Agreed. The proper solution is to have a field in IPv7 header to measure PMTU. It can be a 8 bit field, if fragment granularity is 256B. Masataka Ohta