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Re: [Cbor] I-D Action: draft-ietf-cbor-network-addresses-02.txt

Brian Carpenter <brian.e.carpenter@gmail.com> Wed, 09 June 2021 10:21 UTC

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From: Brian Carpenter <brian.e.carpenter@gmail.com>
Date: Wed, 09 Jun 2021 22:21:09 +1200
Message-ID: <CANMZLAaDizUSi8mcLbjAE15DFwid53VfDG1JbyK5tV6rki4+gw@mail.gmail.com>
To: Carsten Bormann <cabo@tzi.org>
Cc: cbor@ietf.org
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Subject: Re: [Cbor] I-D Action: draft-ietf-cbor-network-addresses-02.txt
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You'll note that 8992 is Informational. If it proves useful, I'd be glad to
see it updated, not necessarily compatibly. And yes, +1 to your suggestion.

Regards,
    Brian Carpenter
    (via tiny screen & keyboard)

On Wed, 9 Jun 2021, 21:30 Carsten Bormann, <cabo@tzi.org> wrote:

> I just had occasion to check RFC 8992 (should have done that earlier,
> ouch).
>
> Apart from this nice piece of CDDL, repeated all over the place (yes, the
> rest is missing each time):
>
>      objective-flags /=          ; as in the GRASP specification
>
> … I find:
>
>      prefval /= pref6val
>      pref6val = [version6, length, ?prefix]
>      version6 = 6
>      length = 0..128             ; requested or offered prefix length
>      prefix = bytes .size 16     ; offered prefix in binary format
>
>      prefval /= pref4val
>      pref4val = [version4, length4, ?prefix4]
>      version4 = 4
>      length4 = 0..32             ; requested or offered prefix length
>      prefix4 = bytes .size 4     ; offered prefix in binary format
>
> Maybe we should supply some CDDL in draft-ietf-cbor-network-addresses so
> people don’t start to copy the above whenever they need a prefix.
>
> Grüße, Carsten
>
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