Re: [v6ops] Apple and IPv6, a few clarifications - ND proxy for bridging hotspots

Alexandru Petrescu <alexandru.petrescu@gmail.com> Thu, 25 June 2015 09:54 UTC

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Date: Thu, 25 Jun 2015 11:54:50 +0200
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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To: Mikael Abrahamsson <swmike@swm.pp.se>
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Subject: Re: [v6ops] Apple and IPv6, a few clarifications - ND proxy for bridging hotspots
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Le 25/06/2015 11:28, Mikael Abrahamsson a écrit :
> On Thu, 25 Jun 2015, Alexandru Petrescu wrote:
>
>> After reading Mikael's email pointing to a 3gpp spec of late 2014
>> mandating DHCPv6-PD to both UE and core network - I must say I am
>> optimistic about the arrival of DHCPv6-PD to cellular network operators.
>>
>> Currently, some cellular networks already offer DHCPv6 together with
>> SLAAC.  Technically that DHCPv6 is extremely simple to upgrade to
>> DHCPv6-PD.
>>
>> My question is when?
>>
>> I can speculate it will be in late 2016.  Because 4G was in specs 2
>> years before trial deployments.
>
> To repeat myself:
>
> DHCPv6-PD requirement didn't appear in 2014.
>
> http://www.etsi.org/deliver/etsi_ts/123400_123499/123401/10.03.00_60/ts_123401v100300p.pdf
> from 2011-MARCH contains prefix delegation, and since it's not available
> in release 9, it seems this is indeed a LTE release 10 feature that is
> more than 4 years old, and still there isn't widespread implementation
> of it that I am aware of.

This makes either the specs irrelevant or the products on the market 
non-conformant.

An UE implements DHCPv6-PD and the core network does not reply to PD 
requests although it replies to DHCPv6 address requests) is a violation 
of specification.

Alex

>