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Re: [v6ops] I-D Action: draft-ietf-v6ops-ipv6-roaming-analysis-02.txt

Ca By <cb.list6@gmail.com> Thu, 07 August 2014 12:57 UTC

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Date: Thu, 07 Aug 2014 05:56:59 -0700
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From: Ca By <cb.list6@gmail.com>
To: Tore Anderson <tore@fud.no>
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Cc: IPv6 Ops WG <v6ops@ietf.org>
Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-ipv6-roaming-analysis-02.txt
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On Aug 6, 2014 10:29 PM, "Tore Anderson" <tore@fud.no> wrote:
>
> * Ross Chandler
>
> >> It might be that when the UE visits a network that doesn’t allow
> >> IPv6 in the user-plane Android behaviour is kicking in.
> >>
> >> I’ve been told that Android treats all APNs as “roughly equal”.
> >>
> >> If the new IPv6-only-without-IPv4-fallback APN fails then Android
> >> might be trying the IPv4 one.
> >
> > If this is what’s going on in Telenor case the plus is it maximises
> > the number of roaming partners that come up with IPv6 but at the
> > possible cost of indeterminism on which APN the UE settles on using
> > when it gets back home.
>
> I'm fairly certain there is no such indeterminism.
>
> Basically the UEs get set up to request IPv6 PDP type both home and when
> roaming. So when they establish a data bearer they get IPv6 (+464XLAT)
> no matter where in the world they are, or they get no data bearer at all
> (if there's some sort of problem somewhere).
>
> That Telenor feels confident in doing it in this manner is very good
> news, I think. It reminds me of the World IPv6 Launch, actually - where
> it was decided that the bugs and issues that had previously made it
> unsafe to deploy IPv6 on a global scale (as opposed to a select few
> known good networks, corresponding well to "the home PLMN only" in the
> mobile case), has been sufficiently solved so that IPv6 can be made
> generally available instead.
>
> I guess now it's up to Cameron and Michał to follow suit. ;-)
>
> Tore
>
>

I agree, for my own phone, i roam internationally with no issue on ipv6.

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