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

Le 22/01/2021 à 13:19, Jan Zorz - Go6 a écrit :
> 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.

When the ARM part of the smartphone sends the DHCPv6-PD request, the
baseband modem part of the smartphone blocks it (drop).

Alex

> 
> 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
> 
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