[111411] in North American Network Operators' Group

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Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space

daemon@ATHENA.MIT.EDU (Iljitsch van Beijnum)
Thu Feb 5 10:28:30 2009

From: Iljitsch van Beijnum <iljitsch@muada.com>
To: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <D994192E-713D-4E63-91E8-6ABEA684DB6F@ianai.net>
Date: Thu, 5 Feb 2009 16:25:44 +0100
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

On 5 feb 2009, at 1:16, Patrick W. Gilmore wrote:

> I guess I was thinking about v4 modems which do not get a subnet,  
> just an IP address.  If we really are handing out a /64 to each DSL  
> & Cable modem, then we may very well be recreating the same problem.

IPv4 thinking.

A single /64 isn't enough for a home user, because their gateway is a  
router and needs a different prefix at both sides. Users may also want  
to subnet their own network. So they need at least something like a /60.


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