On Sat, 3 Sep 2005, John C Klensin wrote:
The specific difficulty arises in numbered paragraph 6 of RFC
2119, which, to save chasing references, reads: [...]
RFC 2821 imposes a number of requirements that, by some
interpretations, are "not actually required for interoperation".
I think the other part of 2119's guidance - "to limit behavior which has
potential for causing harm" - allows the stricter requirements of 2821.
In any case, paragraph 6 of 2119 is a meta-requirement about IETF
documentation standards, rather than about the contents of those
documents - it makes recommendations for writers not readers. Stripping
off the rationale doesn't change the definition of the keywords.
Tony.
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