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Re: [v6ops] draft-ietf-v6ops-mobile-device-profile last call

"Heatley, Nick" <nick.heatley@ee.co.uk> Mon, 23 February 2015 16:03 UTC

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From: "Heatley, Nick" <nick.heatley@ee.co.uk>
To: Mikael Abrahamsson <swmike@swm.pp.se>, Lorenzo Colitti <lorenzo@google.com>
Thread-Topic: [v6ops] draft-ietf-v6ops-mobile-device-profile last call
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Date: Mon, 23 Feb 2015 16:03:07 +0000
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Cc: V6 Ops List <v6ops@ietf.org>
Subject: Re: [v6ops] draft-ietf-v6ops-mobile-device-profile last call
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-----Original Message-----
From: v6ops [mailto:v6ops-bounces@ietf.org] On Behalf Of Mikael Abrahamsson
Sent: 23 February 2015 15:04
To: Lorenzo Colitti
Cc: V6 Ops List
Subject: Re: [v6ops] draft-ietf-v6ops-mobile-device-profile last call


My opinion is the following:

We should recommend to run IPv4v6 whereever possible to operators, for the reasons you provide.
[Heatley, Nick] If we want to recommend, then I would suggest we should recommend that the operator's APN design promotes the use of a single PDP/PDN type per subscriber, for the reasons you provide.
The problem for me is that this is design in the operator network and losing focus on the mobile device profile.

We should recommend device manufacturers to follow the 3GPP standards and set up a second PDP context when it receives CC#52.
[Heatley, Nick] I would not be comfortable doing anything but working within the 3GPP standards.

The background is that parallel address version PDPs may exist per subscriber due to:
1.	Legacy handsets (pre-release8 devices on dualstack networks)
2.	OR Roaming situations, e.g. dualstack APN home networks on legacy visited networks
3.	OR Due to an individual operator's APN design.
So even with a recommendation then 2. could exist and result in CC#52.
IMHO the original text just acknowledges the existence of such an outcome.

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