Re: [tcpm] exegesis of 'Updates' -- was: ... reviewof draft-ietf-tcpm-tcpsecure[-10]

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Anantha Ramaiah (ananth) wrote:
...
> As a result, we're here considering reasons not to put 
> Updates in the header, to avoid too strongly implying that 
> all TCPs everywhere need to be augmented with an 
> IPR-encumbered poor substitute for true security.
>--- 
> IPR issue was raised when the document was initially presented 3+
> years ago!. Scott Bradner made a presentation to clarify the IPR intent
> and after that this, the IPR issue was never considered as a hindrance
> for the draft to move forward. 

That is proven incorrect by your next sentence.

> Agreed that the IPR issue might have had
> some influence w.r.t the verbiage on the strength of mitigations. Lars
> Eggert suggested an applicability statement to be added, we added the
> same. Not sure why you are bringing this up now, the IPR issue was
> beaten to death long time back.

It is relevant to the issue of Updates, just as it was during the
MUST/SHOULD/MAY discussions.

> Again, my current understanding (which is inline with Alfred) is
> about "if a draft changes the TCP RFC 793 rules in some way, then it
> is considered as an update and we should mark it accordingly upfront
> for easy reference purposes" Also, update doesn't mean that "all
> TCP's everywhere need to be augumented with the changes". An
> implementer would read the mitigations, AS and the strength of
> recommended mitigations and would make his/her own choice!

Others have shown cases where modifications with more ubiquitous utility
do not carry the Updates tag. There is no evidence this mod is more
deserving of that tag.

Joe

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