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Re: [v6ops] 6204bis and WAN disappearing

Lorenzo Colitti <lorenzo@google.com> Wed, 22 February 2012 03:59 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Wed, 22 Feb 2012 12:59:26 +0900
Message-ID: <CAKD1Yr07OHzo12fkc-pNBCZ8xLECMZ+ULLcVQa+wOjcULNgHfA@mail.gmail.com>
To: Dan Wing <dwing@cisco.com>
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Cc: v6ops@ietf.org, draft-ietf-v6ops-6204bis@tools.ietf.org
Subject: Re: [v6ops] 6204bis and WAN disappearing
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On Wed, Feb 22, 2012 at 08:49, Dan Wing <dwing@cisco.com> wrote:

> then withdrawing the globally scoped unicast addresses will break
> communication within the home.  This means if my WAN link goes down,
> IPv6 streaming between my NAS and my speakers breaks which ruins my dinner
> party.
>

Losing connectivity on the WAN won't immediately break your stream, since
the global addresses will not go away, they'll just be deprecated. (If the
outage persists for more than two hours, then yes, it will stop).

That said, I would argue that if you're relying on globally-scoped IPv6
addresses expecting that they will never go away, you're Doing It Wrong.
It's not just that the WAN link could go down - the ISP could decide to
renumber your prefix, or the lease might expire and never be renewed (e.g.,
if you didn't pay your bill).

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