Re: [Autoconf] RFC 5889

"Dearlove, Christopher (UK)" <Chris.Dearlove@baesystems.com> Thu, 29 July 2010 12:40 UTC

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From: "Dearlove, Christopher (UK)" <Chris.Dearlove@baesystems.com>
To: "Erik Nordmark" <erik.nordmark@oracle.com>, "Jari Arkko" <jari.arkko@piuha.net>
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Subject: Re: [Autoconf] RFC 5889
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> NEW:
>  o  In general there is no mechanism to ensure that IPv6 link-local
>     addresses are unique across multiple links, however link-local
>     addresses using an IID that is of the modified EUI-64 form is
>     globally unique. Thus if link-local addresses are used to reliably
>     identify routers then they must be of the modified EUI-64 form.

That's a change in substance from something being discouraged (see the
following OLD quote) to telling you how to do that very something.

> OLD:
>   Therefore, autoconfiguration solutions should be encouraged to
>   primarily focus on configuring IP addresses that are not IPv6 link-
>   local.
>
> NEW:
>   Therefore, an autoconfiguration solution which provides a mechanism
for
>   assigning addresses with a wider scope than IPv6 link-local alone
will
>   be more generally useful than one that does not.

That's more than an AUTH-48 error correction, it's a substantial change
in the document's intent. Or so it appears to me.

-- 
Christopher Dearlove
Technology Leader, Communications Group
Networks, Security and Information Systems Department
BAE Systems Advanced Technology Centre
West Hanningfield Road, Great Baddow, Chelmsford, CM2 8HN, UK
Tel: +44 1245 242194  Fax: +44 1245 242124

BAE Systems (Operations) Limited
Registered Office: Warwick House, PO Box 87,
Farnborough Aerospace Centre, Farnborough, Hants, GU14 6YU, UK
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