Re: Informed regulator about the shorter-than-64 necessity on 3G/4G/5G
Alexandre Petrescu <alexandre.petrescu@gmail.com> Wed, 28 July 2021 16:39 UTC
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Subject: Re: Informed regulator about the shorter-than-64 necessity on 3G/4G/5G
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References: <616b05ca-1a02-dfbd-d7f6-c79f56276fa1@gmail.com> <83351c64-0804-a4aa-c100-9b5705c9f71f@go6.si> <02e8b306-4aa9-4694-c4dd-a76285ee0771@gmail.com> <ba4c63b7-8ebf-4d1f-c0d2-98057559a352@go6.si> <8624c38c-934c-6de5-f388-611cf151546c@gmail.com> <0baa72f9-77aa-45e6-3214-2a4e223348c0@gmail.com>
From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Date: Wed, 28 Jul 2021 18:39:27 +0200
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The local telecommunicaitons regulator ARCEP just published an article I authored saying in a footnote on page 51: > Ideally, an operator would offer a prefix shorter than /64 to a car’s > gateway, e.g. one that is /56 long. This would allow the gateway to > form /64 sub-prefixes to be used in the car’s sub-networks with the > SLAAC protocol. That page 51 is visible on these IPv6 friendly URLs of French and English reports: https://www.arcep.fr/uploads/tx_gspublication/rapport-etat-internet-edition-2021-juil2021.pdf https://en.arcep.fr/uploads/tx_gspublication/report-state-internet-2021-edition-july2021.pdf Alex Le 15/06/2021 à 17:52, Alexandre Petrescu a écrit : > I want to let you know that recently I wrote a one pager with my > local telecom regulator about the 64 limit and automobiles connected > to the Internet. This is in French and will be translated in > English soon. > > It basically expresses my oppinion that IPv6 for automobiles on > cellular networks is impossible because of the 64 limit. A footnnote > suggests that, ideally, the mobile operator would give a > shorter-than-64 prefix to an end user when so requested. > > The paper will be published on July 7th. I will send then a pointer > URL. > > Alex > >>>>> single host and I would not bother suggesting regulators to >>>>> change that. >>>> >>>> A single phone with a single interface concerned about IPv6 >>>> maybe one /64 is enough. >>>> >>>> But a single phone with multiple interfaces concerned about >>>> IPv6 (e.g. its cellular interface, its WiFi interface in AP >>>> mode and a virtual interface for an internal virtual machine) >>>> - do you still think one /64 is enough? >>> >>> If that's the case then a phone should send a DHCPv6-PD request >>> and try to get a larger prefix delegated. >>> >>> What I've see mobile phone vendors trying to pull is some sort >>> of proxying that IPv6 prefix down to wifi interface and "share" >>> it with wifi users connected to mobile AP. Not entirely how I >>> would do it, but they rather chose this option other than sending >>> an DHCPv6-PD request to get something larger than /64. >> >> Yes. >> >> But mobile phone vendors are not the only ones who connect to 5G >> networks. There are lots of other non mobile phone vendors who >> sell devices to connect to 5G networks. Some of these are makers >> of IoT routers. These IoT routers do not implement that kind of >> sharing that mobile phone vendors do. (in linux-android speech it >> is called 'clatd' which are absent from other IoT oriented linuces >> which are not android). >> >> 'clatd' is tightly bound to the concept of offering IPv4 pipes >> when the cellular access network is IPv6, because most apps for web >> browsing absolutely still need to work unmodified on IPv4 even if >> the network is migrated to IPv6. >> >> However, contrary to smartphones, many IoT routers dont need to >> browse the IPv4 web. Some of them are pure IPv6 on pure IPv6 >> networks accessing pure IPv6 services. They dont want to be >> constrained by the 64 limit just because IPv4 apps on smartphones >> absolutely need to convert IPv6-IPv4. >> >> Another inconvenient of clatd is that while it does '64share' it >> does not work for multiple subnets that might be behind an IoT >> router - it works only for one subnet, for one particular >> 'tethering' app: extend the cellular interface down into the WiFi >> interface. This 64share does not allow to extend the cellular to >> the WiFi and to the USB interface. >> >> The IP networks deployed in vehicles need the IoT routers and not >> the smartphones. Smartphones are ephemerically plugged in and out >> of the dashboard, but they do not represent the permanent >> connection the car computers need. >> >> These are few points that make it need for more than a /64 from >> the cellular network. >> >> Alex >> >> PS: DHCPv6-PD is in a Stds Track RFC; '64share' is defined in an >> INFORMATIONAL RFC, and 'IoT Router' is defined in an invidiually >> submitted Internet Draft in v6ops WG; there are other individual >> I-Ds that might solve the problem, e.g. ND-PD, ariable SLAAC,... >> others. But the interest now, I think, is not necessarily to push >> particular solutions (DHCPv6-PD, etc), but to make a request for >> address space. This is how I understand the earlier discussions in >> this email list on this topic: whenver I complain about the 64 >> limit, most people tell that there is enough space available and >> one should ask to the operator. >> >>> >>> Cheers, Jan >>> >>> -------------------------------------------------------------------- >>> >>> >>> > >>> >>> IETF IPv6 working group mailing list ipv6@ietf.org Administrative >>> Requests: https://www.ietf.org/mailman/listinfo/ipv6 >>> -------------------------------------------------------------------- >> >>> >>> >>> >> >>> >>> -------------------------------------------------------------------- >> IETF IPv6 working group mailing list ipv6@ietf.org Administrative >> Requests: https://www.ietf.org/mailman/listinfo/ipv6 >> -------------------------------------------------------------------- > >> >> > -------------------------------------------------------------------- > IETF IPv6 working group mailing list ipv6@ietf.org Administrative > Requests: https://www.ietf.org/mailman/listinfo/ipv6 > --------------------------------------------------------------------
- Informed regulator about the shorter-than-64 nece… Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Fernando Gont
- Re: Informed regulator about the shorter-than-64 … Mark Andrews
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Jan Zorz - Go6
- Re: Informed regulator about the shorter-than-64 … Mikael Abrahamsson
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Yucel Guven
- Re: Informed regulator about the shorter-than-64 … Simon Hobson
- Re: Informed regulator about the shorter-than-64 … Yucel Guven
- Re: Informed regulator about the shorter-than-64 … Simon Hobson
- Re: Informed regulator about the shorter-than-64 … Yucel Guven
- Re: Informed regulator about the shorter-than-64 … Jan Zorz - Go6
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu
- Re: Informed regulator about the shorter-than-64 … Alexandre Petrescu