Re: [Autoconf] RFC 5889

"Dearlove, Christopher (UK)" <> Thu, 29 July 2010 12:40 UTC

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From: "Dearlove, Christopher (UK)" <>
To: "Erik Nordmark" <>, "Jari Arkko" <>
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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
>   assigning addresses with a wider scope than IPv6 link-local alone
>   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

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