I agree with Joe that some of the hardening techniques that vendors are
implementing come with consequences (make TCP more brittle). To me, this
is a *reason* this document should be published via the IETF (i.e.,
TCPM) - we are probably in the best position to correctly evaluate and
classify the impact of various hardening techniques. Stack vendors have
been putting these mechanisms in to their stacks without clear
specifications and discussions of the potential upsides and downsides
that would let them make an educated decision. It seems clear to me that
the vendor community is looking for guidance here, and I do believe the
IETF should give it.