Re: draft-ietf-6man-rfc4291bis-06: RFC4941 and comment on stable addresses

Lorenzo Colitti <lorenzo@google.com> Sun, 22 January 2017 11:10 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Sun, 22 Jan 2017 20:10:31 +0900
Message-ID: <CAKD1Yr1uFp3mxZ5mVFJHTQYsuT4Q_Bf5953-nEJivhEgp9fwNQ@mail.gmail.com>
Subject: Re: draft-ietf-6man-rfc4291bis-06: RFC4941 and comment on stable addresses
To: Fernando Gont <fgont@si6networks.com>
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On Sat, Jan 21, 2017 at 11:54 PM, Fernando Gont <fgont@si6networks.com>
wrote:

> 1) The doc says:
> "  The details of forming interface identifiers are defined in other
>    specifications, such as "Privacy Extensions for Stateless Address
>    Autoconfiguration in IPv6" [RFC4941] or "A Method for Generating
>    Semantically Opaque Interface Identifiers with IPv6 Stateless Address
>    Autoconfiguration (SLAAC)"[RFC7217]. "
>
> While the text is not really incorrect, this one being a bis document to
> move rfc4291 to full std, referencing RFC4941 as is has two problems:
>
>   1) It would change the current operating model, where nodes employ
>      stable addresses -- in which temp addresses are *additional*
>      (to stable addresses) and an optional feature
>

That text doesn't change anything. RFC4941 specifies that temporary
addresses are additional to "public" addresses.


>   2) Referenced "as is", it would seem that RFC4941 is an alternative
>      to stable addresses, but as already discussed on this list, RFC4941
>      is specified such that temporary addresses are generated in
>      addition to the stable ones.
>

The text doesn't imply that at all. It simply says that those are two ways
of generating IIDs, which they are.