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Re: 6MAN Adoption call on draft-gont-6man-deprecate-eui64-based-addresses-00

Mark ZZZ Smith <markzzzsmith@yahoo.com.au> Sat, 30 November 2013 02:49 UTC

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References: <F681E049-43A2-4A61-8692-C59A1BF356A6@employees.org> <5296244E.3080004@gmail.com> <52962629.7020907@innovationslab.net> <529674F6.201@gmail.com>
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Date: Fri, 29 Nov 2013 18:49:34 -0800
From: Mark ZZZ Smith <markzzzsmith@yahoo.com.au>
Subject: Re: 6MAN Adoption call on draft-gont-6man-deprecate-eui64-based-addresses-00
To: Tom Taylor <tom.taylor.stds@gmail.com>, Brian Haberman <brian@innovationslab.net>, "ipv6@ietf.org" <ipv6@ietf.org>
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----- Original Message -----
> From: Tom Taylor <tom.taylor.stds@gmail.com>
> To: Brian Haberman <brian@innovationslab.net>; ipv6@ietf.org
> Cc: 
> Sent: Thursday, 28 November 2013 9:40 AM
> Subject: Re: 6MAN Adoption call on draft-gont-6man-deprecate-eui64-based-addresses-00
> 
> Device tracking, I believe.
> 

Some more detail would be useful.

Windows apparently abandoned EUI-64 based addresses quite a while ago, and my android phone uses temporary IPv6 addresses for outbound connections. So specifically basing some form of device tracking mechanism on the presence of EUI-64 format IIDs for those two common platforms is and has become quite ineffective.

I'm also confused by the comment about IPv4. There probably isn't enough host address space in commonly deployed IPv4 addresses (i.e., /24s or longer) to put any useful amount of an EUI-48 or similar sized layer 2 address in the IPv4 address, unless they're also deploying locally administered layer 2 addresses.





> On 27/11/2013 12:04 PM, Brian Haberman wrote:
>>  Tom,
>> 
>>  On 11/27/13 11:56 AM, Tom Taylor wrote:
>> 
>>>  It is clear that
>>>  some network operators rely on EIU-64-based IPv6 addresses for
>>>  administrative purposes, as a carry-over from IPv4, and do not at
>>>  present wish to modify their procedures.
>>> 
>> 
>>  Could you elaborate on the above?  What procedures are they carrying
>>  over from IPv4 WRT EUI-64-based addresses?
>> 
>>  Regards,
>>  Brian
>> 
>> 
>> 
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