On Jun 15, 2012, at 11:50 PM, Masataka Ohta wrote:
Joe Touch wrote:
Again, this document doesn't change the current situation. Operators who
clear the DF bit are not innocent - they need to override a default
setting. They are active participants. They ARE guilty of violating
existing standards.
While IETF is not a protocol police and clearing DF is not
considered guilty by operators community, the following
draft:
draft-generic-v6ops-tunmtu-03.txt
to fragment IPv6 packets by intermediate routers should be
very interesting to you.
It is aware of our IPv4-ID doc, and consistent with it.
When the DF is "ignored", the ID field is rewritten - i.e., turning the packet
from atomic to compliant non-atomic within the tunnel. This is consistent with
the notion that the ID field must be unique, and that atomic packets need not
have unique IDs. The rewriting is hidden - happens only inside the tunnel, is
controlled uniquely by the source, and does not need coordination by other
sources.
Joe