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Re: <draft-ietf-6man-default-iids> update to rfc2464bis

Lorenzo Colitti <lorenzo@google.com> Thu, 12 January 2017 05:21 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 12 Jan 2017 14:21:25 +0900
Message-ID: <CAKD1Yr0O6gnXZc3qEY7bqkBYu-sx1_erwum2DRwpe+Vv+jmdiw@mail.gmail.com>
Subject: Re: <draft-ietf-6man-default-iids> update to rfc2464bis
To: Bob Hinden <bob.hinden@gmail.com>
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On Tue, Jan 10, 2017 at 5:40 AM, Bob Hinden <bob.hinden@gmail.com> wrote:

>    It is not recommended that Interface Identifiers for an Ethernet
>    interface be based on IEEE MAC-layer addresses.


Please include the word "stable" in this sentence. (See below.)


>    Earlier versions of
>    this document described a method of forming interface identifiers
>    derived from IEEE MAC-layer addresses called Modified EUI-64 format.
>    This is described in Appendix A of [I-D.ietf-6man-rfc4291bis] and is
>    no longer recommended.
>

Based on my reading of draft-ietf-6man-default-iids-16 , it's not correct
to say that this approach is "not recommended". This approach is not
recommended for use with stable MAC addresses, but there is no
recommendation against using it for non-stable MAC addresses. We do
recommended that nodes use RFC7217 addresses by default, but only if the
node wishes to create stable addresses, and there is no requirement that a
node do so.

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