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Re: I-D Action: draft-linkova-6man-default-addr-selection-update-00.txt

Jen Linkova <furry13@gmail.com> Fri, 07 April 2017 14:02 UTC

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From: Jen Linkova <furry13@gmail.com>
Date: Fri, 07 Apr 2017 16:02:29 +0200
Message-ID: <CAFU7BAS+U1FAEPEkhqcU0p+odk+P8mhZjAdnTSckoVi-4hLT2g@mail.gmail.com>
Subject: Re: I-D Action: draft-linkova-6man-default-addr-selection-update-00.txt
To: Erik Kline <ek@google.com>
Cc: Mark Smith <markzzzsmith@gmail.com>, 6man <ipv6@ietf.org>
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On Fri, Apr 7, 2017 at 3:25 PM, Erik Kline <ek@google.com> wrote:
>> > It is a sad, but seemingly true, state of affairs that all of this blows
>> > up
>> > the core DNAv6 working assumption:
>> >
>> >     https://tools.ietf.org/html/rfc6059#section-1.5
>> >
>> >    o  The combination of the link-layer address and the link-local IPv6
>> >       address of a router is unique across links.
>>
>> Well, I'd expect that the combination of the L2 address AND LLA v6
>> address would still be unique (unless
>> people are explicitly configuring L2 addresses or MAC addresses are
>> not unique - both cases do happen but from my limited experience,
>> not so often as explicitly configured VRRP LLA Ipv6 addresses).
>
>
> If people are using the VRRP MAC space, then I don't see a lot of room for
> uniqueness:
>
>     https://tools.ietf.org/html/rfc5798#section-7.3

oops, I stand corrected.
You are right indeed, the MAC will be the same (assuming VRID is not
changing between the interfaces, which is most likely to be the case).

-- 
SY, Jen Linkova aka Furry

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