[Ltru] status of RFC 3066 or RFC 3066bis in relation to HTTP
ned.freed at mrochek.com
Fri Mar 24 18:18:10 CET 2006
> As a long-time IETFer:
> Typically, these matters are handled on an ad-hoc case-by-case basis in
> which common sense prevails.
> The razor in this case is "does something break?" Most updates to IETF
> documents expand upon, or clarify, what was in the older document; they do
> not introduce an incompatibility. If something is removed, that is
> generally because there is community concensus that it is bad juju.
> So, given RFC abcd that normatively references RFC efgh that has been
> obsoleted by RFC ijkl:
> . can two RFC abcd implementations communicate with each other, and the
> desired behavior happen, even though one uses RFC efgh and the other
> uses RFC ijkl?
> If the answer is yes, then the question is effectively academic in nature.
> Sometime in the future, RFC abcd will have to be updated to reflect the
> change to RFC ijkl, but as it doesn't break interoperability it isn't
> urgent. One might expect that old implementations will use RFC efgh and
> new implementations will use RFC ijkl.
> If the answer is no, then someone was not doing their job; RFC ijkl should
> not have been approved without that working group taking on the needed
> update to RFC abcd. An important purpose of the IETF/IESG bureaucracy is
> to prevent something like this from happening.
> Hence the answer that since RFC abcd normatively refers to RFC efgh, it is
> RFC efgh that is used by an RFC abcd implementator. It is, however,
> expected that people would tend to use RFC ijkl instead (if only because
> it has clearer wording and represents more modern understanding) -- and
> sooner or later, RFC abcd will be obsoleted by a RFC mnop that makes this
> change official.
> Equally important is that RFC ijkl should not have been approved for
> publication if it creates an incompatibility problem in RFC abcd, without
> also updating/obsoleting RFC abcd.
Full agreement on all points.
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