Can you give an example of where a dangling SHOULD makes sense? Most often I
see something like:
SHOULD implement security
meaning
SHOULD implement security, unless you do not feel like it or are in an
authoritarian regime that bans securityOn Aug 30, 2011, at 12:11 PM, Keith Moore wrote: > On Aug 30, 2011, at 12:06 PM, Marc Petit-Huguenin wrote: > >> The meaning of SHOULD is clear for the authors (it "mean[s] that there may >> exist >> valid reasons in particular circumstances to ignore a particular item, but >> the >> full implications must be understood and carefully weighed before choosing a >> different course."), the problem is that some implementers use a different >> meaning (I do not have to implement this if it is inconvenient or difficult >> for >> me to implement), vendors another one (SHOULD gave us the right to not >> implement >> it). I even read somewhere, perhaps on this list, about a vendor that >> rejected >> any bug report against a SHOULD. Conditional MUST, in my opinion, does not >> have >> this problem. > > But conditional MUST has other problems, namely that you have to enumerate > the exceptions for the MUST, and that's not always practical. > > Implementors who think that SHOULD gives them a free pass to avoid > implementing something that's needed to interoperate are misreading 2119. > But document editors should avoid using SHOULD for cases where failure to > implement the requirement will result in interoperability failure. > > I could see maybe posting an erratum or a brief update to 2119, but I think > that reopening that document in general is a Very bad Idea. And for existing > documents that misuse SHOULD, the appropriate thing to do is to update those > documents or post errata to those documents, rather than try to retroactively > change the meaning of the keywords in those documents. > > Keith > > _______________________________________________ > Ietf mailing list > Ietf@ietf.org > https://www.ietf.org/mailman/listinfo/ietf
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