Re: Informed regulator about the shorter-than-64 necessity on 3G/4G/5G

Fernando Gont <fgont@si6networks.com> Tue, 19 January 2021 00:02 UTC

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Subject: Re: Informed regulator about the shorter-than-64 necessity on 3G/4G/5G
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>, IPv6 <ipv6@ietf.org>
References: <616b05ca-1a02-dfbd-d7f6-c79f56276fa1@gmail.com>
From: Fernando Gont <fgont@si6networks.com>
Message-ID: <f300119e-0233-c711-207e-6962d67e87bd@si6networks.com>
Date: Mon, 18 Jan 2021 19:04:12 -0300
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Hi, Alex,

On 18/1/21 05:45, Alexandre Petrescu wrote:
> Hi, 6MANners,
> 
> Today I formulated a brief personal email to some person(s) at the
> regulator agency suggesting the allocation of shorter-than-64 prefixes
> (e.g. /56) to end users.
> 
> I explained that the current situation where each of the mobile
> operators deliver a /64 and not shorter to smartphones is not usable for
> networks such as mobile hotspots or in-car multi-subnet networks.
> 
> I informed that there are some I-D proposals of Variable SLAAC that is
> relatively refused at IETF because of the IETF necessity of 64bit (and
> not shorter) IIDs.

This seems to be confusing things.

Proposals for "classless IPv6" (e.g.: 
draft-bourbaki-6man-classless-ipv6) are meant to allow SLAAC to work 
with *longer* prefixes (i.e., shorter IIDs)

Shorter prefixes (i.e., bigger address blocks leased to users) are 
already supported by DHCPv6-PD, without the need of any additional 
protocol action.

Thanks,
-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492