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

Jan Zorz - Go6 <jan@go6.si> Fri, 22 January 2021 12:19 UTC

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Subject: Re: Informed regulator about the shorter-than-64 necessity on 3G/4G/5G
To: ipv6@ietf.org
References: <616b05ca-1a02-dfbd-d7f6-c79f56276fa1@gmail.com> <83351c64-0804-a4aa-c100-9b5705c9f71f@go6.si> <02e8b306-4aa9-4694-c4dd-a76285ee0771@gmail.com>
From: Jan Zorz - Go6 <jan@go6.si>
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Date: Fri, 22 Jan 2021 13:19:06 +0100
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On 20/01/2021 06:56, Alexandre Petrescu wrote:
> 
> 
> Le 19/01/2021 à 18:21, Jan Zorz - Go6 a écrit :
> [...]
>> I would say that for single phone - /64 is enough as that's a 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.

Cheers, Jan