[131199] in North American Network Operators' Group
RE: Only 5x IPv4 /8 remaining at IANA
daemon@ATHENA.MIT.EDU (Ben Butler)
Thu Oct 21 11:07:37 2010
From: Ben Butler <ben.butler@c2internet.net>
To: "'Patrick Giagnocavo'" <patrick@zill.net>, "Owen DeLong" <owen@delong.com>,
"NANOG" <nanog@nanog.org>
Date: Thu, 21 Oct 2010 16:07:26 +0100
In-Reply-To: <4CC0553C.8060202@zill.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi,
Showing my ignorance here, but this is one of the things I have =
wondered, given that we run both v4 and v6 for a period of time on the =
Internet, presumably at one time or another a particular resource may =
only be able in v4 land, then v4 and v6, then finally v6 only.
I have never been particularly clear how an end network that exists only =
in v4 or v6 address space is able to access a resource that only exists =
in the other. Is can sort of see some freaking huge NAT box type thing =
that summarizes v6 in a v4 address scope or contains the v4 address =
range at some point inside the v6 address space - but how can a v4 host =
get to a hot in v6 world that sits outside this without going through =
some form of proxy / nat gateway between the two.
Or are the two simply not inter-communicable?
Ben
-----Original Message-----
From: Patrick Giagnocavo [mailto:patrick@zill.net]=20
Sent: 21 October 2010 15:59
To: Owen DeLong; NANOG
Subject: Re: Only 5x IPv4 /8 remaining at IANA
On 10/21/2010 4:28 AM, Owen DeLong wrote:
>> Actually for those of my clients in one location, it served as an
>> impetus to extend a contract with Level3 for another 3 years - with
>> their existing allocation of a /24 of IPv4 addresses included.
>=20
> All well and good until some of their customers are on IPv6...
> Then what?
I'm sorry, can you expand on exactly what you mean by this?
Are IPv6 connected machines unable to access IPv4 addresses?
Or is this more IPV6 fanboi-ism?
--Patrick
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Ben Butler
Director Tel: 0333 666 3332=20
Fax: 0333 666 3331
C2 Business Networking Ltd
The Paddock, London Road, Nantwich, Cheshire, CW5 7JL
http://www.c2internet.net/
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