[190725] in North American Network Operators' Group
Re: IPv6 Deployment for Mobile Subscribers
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Fri Jul 22 23:52:29 2016
X-Original-To: nanog@nanog.org
To: Ricardo Ferreira <ricardofbferreira@gmail.com>
From: Valdis.Kletnieks@vt.edu
In-Reply-To: <CAE0OVL9f9JEMDWx3-DzH7-nQUbWJFGAE5oWfWN-sX6MXhMtq_A@mail.gmail.com>
Date: Fri, 22 Jul 2016 23:52:14 -0400
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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On Fri, 22 Jul 2016 10:54:48 +0200, Ricardo Ferreira said:
> Is there anyone here working in an ISP where IPv6 is deployed?
> We are starting to plan the roll-out IPv6 to mobile subscribers (phones) I
> am interesting in knowing the mask you use for the assignment; whether it
> is /64 or /128.
>
> In RFC 3177, it says:
> - /128 when it is absolutely known that one and only one device
> is connecting.
See this RFC, which is a recently released BCP:
7934 Host Address Availability Recommendations. L. Colitti, V. Cerf, S.
Cheshire, D. Schinazi. July 2016. (Format: TXT=37124 bytes) (Also
BCP0204) (Status: BEST CURRENT PRACTICE) (DOI: 10.17487/RFC7934)
In short - even when you have only one device connecting, you probably need
more than one address.
Also, consider the common practice of tethering....
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