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Re: 64bit MAC addresses and SLAAC

Behcet Sarikaya <sarikaya2012@gmail.com> Tue, 16 June 2020 15:38 UTC

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Reply-To: sarikaya@ieee.org
From: Behcet Sarikaya <sarikaya2012@gmail.com>
Date: Tue, 16 Jun 2020 10:38:04 -0500
Message-ID: <CAC8QAcdDjQvonke7hytV8pCYsTAjATNi560v_b32jus_jDW8bw@mail.gmail.com>
Subject: Re: 64bit MAC addresses and SLAAC
To: Bob Hinden <bob.hinden@gmail.com>
Cc: Alexandre Petrescu <alexandre.petrescu@gmail.com>, IPv6 List <ipv6@ietf.org>
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On Mon, Jun 15, 2020 at 4:02 PM Bob Hinden <bob.hinden@gmail.com> wrote:

> Alexandre,
>
> > On Jun 15, 2020, at 1:23 PM, Alexandre Petrescu <
> alexandre.petrescu@gmail.com> wrote:
> >
> > Hi,
> >
> > Before the sanitary situation I was studying an issue at ISO.
> >
> > The issue is about 64bit MAC addresses and SLAAC.
> >
> > SLAAC needs a 48bit MAC addresses in order to work, and it can not work
> with a 64bit MAC address; (but yes, it can with 64bit IIDs).
>
> SLACC does not specify the length of the Interface ID, it does not require
> require 48-bit MAC addresses, and the reason for Modified EUI-64 Format
> Interface Identifiers in RFC4291 was to support 64bit EUI-64 Identifiers.
>  We have since moved away from using MAC addresses as Interface IDs.  See
> RFC 8064.
>
>

+1

Behcet


> Bob
>
>
> >
> > The document ISO/CD 22738:2019(E) under development at that time does
> specify a 64bit MAC address for optical camera communications (OCC, akin to
> IEEE 802.15.7).
> >
> > This might be an additional requirement for SLAAC improvements.  Or not.
> >
> > Alex
> >
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