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Re: [Int-area] Review of draft-narten-ipv6-3177bis-48boundary-05

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 21 August 2010 04:45 UTC

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Message-ID: <4C6F59E3.4030503@gmail.com>
Date: Sat, 21 Aug 2010 16:45:23 +1200
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Mark Smith <ipng@69706e6720323030352d30312d31340a.nosense.org>
References: <D74F3837-E115-49FB-A9AB-5E0C53406621@tony.li> <28C4A15C-DE54-4DD2-A5FD-33BFF66EFE83@cisco.com> <20100821105912.65da34e3@opy.nosense.org>
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Cc: IPv6 Operations <v6ops@ops.ietf.org>, int-area@ietf.org
Subject: Re: [Int-area] Review of draft-narten-ipv6-3177bis-48boundary-05
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On 2010-08-21 13:29, Mark Smith wrote:
....
> Protocols like IPX and Appletalk were easier to use because they were
> designed to be user friendly - with the users of the protocols being
> both the end users and the operators of the network (if the network
> was large enough for them to exist). 

Oh, archaeology is called for.

The direct inspiration for the /64 boundary in IPv6 was IPX (or,
to be historically correct, XNS). And a lot of the thinking behind
promoting /48 as the one-size-fits-all prefix length was also
based on IPX/XNS (and a little bit on DECnet).

IPX and Appletalk directly inspired the decision to have built-in
stateless autoconfiguration as part of IPv6; ND and RA were of course
invented anew, but the main goal was zero-conf ease of use.

At that time, IPv4 was a manual configuration nightmare, because
DHCP wasn't yet deployable.

But we have moved on since then, and I believe that 3177bis hits
the mark fairly accurately (given that we now have DHCPv6 where
needed).

    Brian

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