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Re: [netmod] Changes to IPv6 zone definition in draft-ietf-netmod-rfc6991-bis-15

Brian E Carpenter <brian.e.carpenter@gmail.com> Sun, 07 April 2024 19:58 UTC

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Date: Mon, 08 Apr 2024 07:58:20 +1200
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To: Jürgen Schönwälder <jschoenwaelder@constructor.university>
Cc: NETMOD Working Group <netmod@ietf.org>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Subject: Re: [netmod] Changes to IPv6 zone definition in draft-ietf-netmod-rfc6991-bis-15
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On 08-Apr-24 04:59, Jürgen Schönwälder wrote:
> 
> On 06.04.24 22:57, Brian E Carpenter wrote:
>> On 06-Apr-24 19:52, Jürgen Schönwälder wrote:
>>
>>> I believe numeric zone identifiers were always supported so they
>>> always work as a fallback.
>>
>> Correct, but do all network elements actually support RFC4007? Maybe
>> there are devices where interfaces do not have a simple sequential
>> numbering.
>>
> 
> There is nothing that says sequential. And the native identifier for
> an interface used to be a number (and text about using the number as
> the canonical format is not new either).

That's all true, but I could imagine a device which by design requires
(say) two numbers to identify an interface (e.g. interface 3 in row 2).
That might simply be out of scope for your model, as it is for RFC 4007.

    Brian

>

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