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Re: Deprecating EUI-64 Based IPv6 Addresses

"Fred Baker (fred)" <fred@cisco.com> Sat, 30 November 2013 23:59 UTC

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From: "Fred Baker (fred)" <fred@cisco.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
Subject: Re: Deprecating EUI-64 Based IPv6 Addresses
Thread-Topic: Deprecating EUI-64 Based IPv6 Addresses
Thread-Index: AQHO7Qsx2wCF/kJsDkWvUrXC0nePDpo8v82AgAIa8oA=
Date: Sat, 30 Nov 2013 23:58:59 +0000
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Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, "6man@ietf.org" <6man@ietf.org>, Fernando Gont <fernando@gont.com.ar>, "<draft-gont-6man-deprecate-eui64-based-addresses@tools.ietf.org>" <draft-gont-6man-deprecate-eui64-based-addresses@tools.ietf.org>
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On Nov 29, 2013, at 7:49 AM, "Pascal Thubert (pthubert)" <pthubert@cisco.com>
 wrote:

> I attended .1 meetings in Dallas the week after Vancouver and the fashion was more around:
> 
> - cannot bridge 64  bits address (but the reason is more for incompatible MAC expectation in 15.4 like latency than for address translation reasons)
> - should go back to EUI 48 for everything (and the reason was that changing all the mibs that have 48 bits in them is a nightmare)

From my perspective, I really don't care how many bits any given technology uses. If they need a 92.5 bit address, they should use a 92.5 bit address. On the other hand, if they don't need a given address size, they should not concoct a reason to use it. The IETF should similarly use address sizes and structures that work will across a variety of lower layer technologies, and perform the unnatural act of tying itself to one of them, or appearing to. The value of a virtual address is that it maps to anything...

> Cheers,
> 
> Pascal
> 
>> -----Original Message-----
>> From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Alexandru Petrescu
>> Sent: vendredi 29 novembre 2013 14:59
>> To: Fred Baker (fred); Fernando Gont
>> Cc: 6man@ietf.org; <draft-gont-6man-deprecate-eui64-based-
>> addresses@tools.ietf.org>
>> Subject: Re: Deprecating EUI-64 Based IPv6 Addresses
>> 
>> sidenote about this intriguing bit...
>> 
>> Le 25/10/2013 07:16, Fred Baker (fred) a écrit :
>> [...]
>>> and note that the IEEE is now (I'm told) discussing 128 bit MAC
>>> Addresses.
>> 
>> Found in draft-ieee-rac-oui-restructuring-00 section 4.4.2 'EUI-128 addresses'.
>> 
>> Alex
>> 
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