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Re: [babel] [Babel-users] MAC rekeying in babeld and information model

"STARK, BARBARA H" <bs7652@att.com> Tue, 21 January 2020 18:00 UTC

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From: "STARK, BARBARA H" <bs7652@att.com>
To: 'Juliusz Chroboczek' <jch@irif.fr>, 'Toke Høiland-Jørgensen' <toke@toke.dk>
CC: "'babel-users@lists.alioth.debian.org'" <babel-users@lists.alioth.debian.org>, "'babel@ietf.org'" <babel@ietf.org>
Thread-Topic: [Babel-users] MAC rekeying in babeld and information model
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Date: Tue, 21 Jan 2020 18:00:00 +0000
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Subject: Re: [babel] [Babel-users] MAC rekeying in babeld and information model
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> From: Juliusz Chroboczek <jch@irif.fr>
> 
> > As I just replied in the other thread: The Bird implementation is
> > going to have this facility no matter what we specify in the spec, but
> > I'm fine with having it optional, or omitting it from the spec
> > entirely, as long as we don't forbid having a key-use parameter :)
> 
> It is my understanding that it's already effectively optional -- it can be
> exported as read-only (paragraph 3.9 of the draft).  I suggest we let Barbara
> decide whether she wants to explicitly mark it as optional.

I find it confusing to have parameters an implementation has no use for. The "MAY choose to expose as read-only" is actually a bit awkward in this case, since ideally, users can add entries to the object (in which case it's weird to have read-only parameters set by the implementation). It's not disallowed -- just weird. I would like to mark them optional to implement. I don't think this would impact the YANG model (because the YANG model doesn't deal with the mandatory/optional to implement aspects of the spec)?
Barbara

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