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Re: An observation on draft-leiba-rfc2119-update-01

2017-02-07 10:39:34
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In article 
<CALaySJL-kfjQO=P3aVWwu6zEz6y5k7bngqEf0eqShWjAKAZ7Ug(_at_)mail(_dot_)gmail(_dot_)com>
 you write:
In fact, we *do* often (though not always) cite update documents when
we're explicitly talking about a feature that was updated.  I think we
do it when calling the reader's attention to the update is
particularly important.

Agreed, since this update is not backward compatible.  It would have
been a lot cleaner to replace 2119 with, say, 8119, but I can see why
you didn't want to open that particular institutional size can of
worms.

even with "MUST", the BCP 14 meaning
explicitly says that it's a protocol requirement that affects
interoperability or security, and we do seem to think that making that
distinction is important.

That is surprisingly unclear to a lot of people, particularly ones not
deeply embedded in the IETF.  We know that MUST means "do this if you
want to interoperate" but I know people who imagine it means "do this
or else."

R's,
John
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