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Re: [Cbor] Supporting IPv6 Link-Local with scope (was Re: Éric Vyncke's Discuss on draft-ietf-cbor-network-addresses-09: (with DISCUSS and COMMENT))

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 06 October 2021 22:45 UTC

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To: Michael Richardson <mcr+ietf@sandelman.ca>, Carsten Bormann <cabo@tzi.org>
Cc: Éric Vyncke <evyncke@cisco.com>, cbor@ietf.org, draft-ietf-cbor-network-addresses@ietf.org, The IESG <iesg@ietf.org>, Donald Eastlake <d3e3e3@gmail.com>, Barry Leiba <barryleiba@computer.org>, cbor-chairs@ietf.org
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Thu, 07 Oct 2021 11:44:48 +1300
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Subject: Re: [Cbor] Supporting IPv6 Link-Local with scope (was Re: Éric Vyncke's Discuss on draft-ietf-cbor-network-addresses-09: (with DISCUSS and COMMENT))
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On 07-Oct-21 10:55, Michael Richardson wrote:
> 
> Carsten Bormann <cabo@tzi.org> wrote:
>     > On 6. Oct 2021, at 18:18, Michael Richardson <mcr+ietf@sandelman.ca> wrote:
>     >>
>     >> Hi, at the CBOR WG meeting this morning, support for IPv6 LL scopes
>     >> was the major topic.
> 
>     > YANG ietf-inet-types has zones for IPv4.
>     > Shouldn’t we, too?
> 
> Are there any OSes and Applications that really know how to deal with having
> IPv4-LL addresses on multiple interfaces?  And didn't IPv4 die awhile back?
> 
> If you really think we should do this for IPv4, I don't really object.
> I just don't know what RFCs to cite.

That's probably because there are none. As far as I know, there is no
"Scoped architecture for IPv4" RFC. I don't know why there is YANG support.

Michael's text citing RFC4007 looks good to me.

    Brian

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