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Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)

Vasilenko Eduard <vasilenko.eduard@huawei.com> Sat, 20 February 2021 14:17 UTC

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From: Vasilenko Eduard <vasilenko.eduard@huawei.com>
To: Gert Doering <gert@space.net>, Fernando Gont <fgont@si6networks.com>
CC: IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
Thread-Topic: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
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Date: Sat, 20 Feb 2021 14:17:13 +0000
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Subject: Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
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Indeed,
If something could be implemented through all continents in one case
But may have the significance "one link only" in another case,
Then any "Scope" classification for this thing would be misleading.
Better explanation is here: https://en.wikipedia.org/wiki/Occam%27s_razor
Ed/
-----Original Message-----
From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Gert Doering
Sent: Saturday, February 20, 2021 5:09 PM
To: Fernando Gont <fgont@si6networks.com>
Cc: IPv6 Operations <v6ops@ietf.org>; 6man@ietf.org
Subject: Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)

Hi,

On Thu, Feb 18, 2021 at 09:58:29PM -0300, Fernando Gont wrote:
> On 18/2/21 21:36, Brian E Carpenter wrote:
> > So, my thought (and it belongs on this thread OR the 'IPv6 addressing: Gaps?' one) is something like:
> > 
> > We should abolish, delete, expunge and deprecate the word "scope" from all IPv6 documents. It clearly doesn't have an agreed meaning, so it is worse than useless.
> 
> FWIW, wfm. :-)

Seconded.

> (Modulo: the multicast folks do use "scope" in a more "successful" 
> way,
> IIRC?)

Their definitions are at least somewhat more clear on what a "scope" is - send a packet to that address, and this is how far it will get.

In practice, how much IPv6 multicast is there which is not "node" and "link" scoped?  Or, to be even more picky, not "link" scoped?

Gert Doering
        -- NetMaster
--
have you enabled IPv6 on something today...?

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