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Re: [v6ops] IPv4 trajectory

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 02 April 2015 19:23 UTC

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Date: Fri, 03 Apr 2015 08:23:44 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Mark Andrews <marka@isc.org>
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Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, v6ops@ietf.org
Subject: Re: [v6ops] IPv4 trajectory
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On 03/04/2015 07:08, Alexandru Petrescu wrote:
> Le 02/04/2015 20:00, Mark Andrews a écrit :
> [...]
>>> And Windows' hosts file containing 127?
>>
>> Do you want to rip all the A records out of the DNS as well?
> 
> Right.  That is necessary in order to obtain IPv6-only.

You confuse me. Why is it necessary? To the contrary, it is
necessary *not* to do this until the last IPv4 user has vanished.

You might of course consider a resolver that returns NXDOMAIN for
any A query, if you want to hide IPv4 from a local domain.

> But it looks
> like a huge task to remove all A records from DNS.
> 
> This makes think about removing all 500k IPv4 routes from the DFZ - also
> a huge task.

And equally undesirable. Again, you could locally render all
IPv4 routes unreachable, if you really wanted to.

   Brian

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