Re: [v6ops] How do you solve 3GPP issue if neither operator nor handset supports PD?

Mikael Abrahamsson <swmike@swm.pp.se> Mon, 23 November 2020 12:24 UTC

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Date: Mon, 23 Nov 2020 13:24:43 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Gyan Mishra <hayabusagsm@gmail.com>
cc: 6MAN <6man@ietf.org>, IPv6 Operations <v6ops@ietf.org>, "draft-mishra-6man-variable-slaac@ietf.org" <draft-mishra-6man-variable-slaac@ietf.org>
Subject: Re: [v6ops] How do you solve 3GPP issue if neither operator nor handset supports PD?
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On Mon, 23 Nov 2020, Gyan Mishra wrote:

> How do we propose to solve this problem if operators don’t support PD even
> though the  3GPP standard has supported PD for over 10 years.
>
> Another twist to this puzzle is Android has 90% of the mobile handset
> marketplace worldwide and adamantly states they will NOT support DHCPv6 or
> PD.
>
> I researched Apple which has 10% of the market and they also do not support
> PD.
>
> Whats the solution now?

The obvious use-case for PD is the "LTE router" fixed-wireless use-case. 
There the problem of getting a DHCPv6-PD client into the UE isn't the same 
as on handsets. A lot of those platforms already support DHCPv6-PD for 
their wired versions (some have both LTE and wired WAN).

So this brings us back to the mobile core. Why doesn't this today, 8 years 
after DHCPv6-PD was introduced in 3GPP standards, still not support PD?

I don't know but I know staff at operators who claim to have tried (more 
than 5 years ago). I do not know why their efforts failed. Perhaps the 
mobile core vendors successfully managed to divide the customer base so 
there was no critical mass. I can only speculate. I just find it weird 
that there are now demands to change *everything* downstream from the 3GPP 
bearer to handle smaller subnets instead of enabling PD in mobile core.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se