Re: [v6ops] 464xlat case study (was reclassify 464XLAT as standard instead of info)

If I’m correct, this was the reason big cable operators such as Comcast, pushed CableLabs to accept IPv6 for the management network at least in DOCSIS 3.0, as they had already run out of RFC1918 space, so they need to duplicate it across his own network, a big trouble … I think SoftBank run into the same problem, probably just a few really big operators, but a big mess for them.

Regards,
Jordi

-----Mensaje original-----
De: v6ops <v6ops-bounces@ietf.org> en nombre de Simon Hobson <linux@thehobsons.co.uk>
Responder a: <linux@thehobsons.co.uk>
Fecha: lunes, 25 de septiembre de 2017, 21:34
Para: "v6ops@ietf.org list" <v6ops@ietf.org>
Asunto: Re: [v6ops] 464xlat case study (was reclassify 464XLAT as standard instead of info)

    Fred Baker <fredbaker.ietf@gmail.com> wrote:

    > Several companies, notably Microsoft and Comcast in the v6ops context, and said that they were running out not only of public space but, within their networks, private space. In the CGN context, this (in part, there were other considerations) resulted in us requesting an additional RFC 1918-like prefix for the space between a presumed NAT'd private address space and a CGN.

    While I'd never considered that before now, it makes sense. 10/8 only has 16 million addresses (or, say, 65k /24s), plus another million for 172/12 and another 65k for 192.168/16. Given that (for example) Azure uses a lot of RFC1918 addressing internally, it's not hard to see how they could be running into problems.

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