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To: dnsop@cafax.se
From: Måns Nilsson <mansaxel@sunet.se>
Date: Thu, 21 Mar 2002 04:15:49 +0100
Content-Disposition: inline
In-Reply-To: <Pine.BSF.4.30.0203210301510.4117-100000@spider.nic-se.se>
Sender: owner-dnsop@cafax.se
Subject: Re: draft-ietf-dnsop-v6-name-space-fragmentation-01.txt

--On Thursday, March 21, 2002 03:21:35 +0100 Mats Dufberg
<dufberg@nic-se.se> wrote:

> I think we should devide the zones into a few categories:
> 
> 1. The root zone
> 
> 2. The TLD zones
> 
> 3. Special zones such as in-addr.arpa, ip6.arpa, e164.arpa
> 
> 4. Customer zones
> 
> 
> I think that we can say that it is a MUST that 1, 2 and 3 be served under
> at least one IPv4 connected namnserver until IPv4 is closed down as part
> of Internet.

That would mean until "forever", unless there is a flag day. It might be
smarter and more flexible to devise a traffic sampling scheme to serve as
input to a reoccurring review of the need for v4 service for a given zone.
This also implies that the decision process could be distributed. (the
various cases outlined above would of course be dealt with separately, but
I suspect horisontal decision fragmentation (ie between namn.se and
example.se) would take place as well.)

> We should recommend that customers zones (4) be served under IPv4, but I
> think it is a misstake to think that customers can rely on free
> namesservers.  Free nameserver service has limitations.

I do not think that we should specify this either. We might advise, but
what people ultimately use for serving their zones is their own problem, as
long as they fulfill the requirements of their mother zone.

-- 
Måns Nilsson            Systems Specialist
+46 70 681 7204         KTHNOC
                        MN1334-RIPE


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