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Re: [v6ops] IPv4v6 roaming

Ross Chandler <ross@eircom.net> Wed, 06 August 2014 07:48 UTC

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From: Ross Chandler <ross@eircom.net>
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Date: Wed, 06 Aug 2014 08:47:59 +0100
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References: <256EAE0B-5C11-42C7-BCA1-CEC7EE6713A7@cisco.com> <53DFD634.4020304@fud.no> <DE860EBC-171E-46E7-A3B6-5E8B79A453CC@cisco.com> <53DFEC6C.3010707@gmail.com> <CAD6AjGRUWxT5XiNxMi_S5VgYtGMLb_FVHXN-ZfGpcY=geix15g@mail.gmail.com> <53E06AC9.9010908@fud.no> <CAD6AjGTwt-20gXs=RUH5zbhT+g3HKrvXHX3FnShjF1srqU21Fw@mail.gmail.com> <94146541-768B-4853-A011-7558655C361C@eircom.net> <53E11795.7060305@fud.no> <alpine.DEB.2.02.1408060856080.7929@uplift.swm.pp.se>
To: Mikael Abrahamsson <swmike@swm.pp.se>
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Cc: IPv6 Ops WG <v6ops@ietf.org>
Subject: Re: [v6ops] IPv4v6 roaming
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Subject line updated.

On 6 Aug 2014, at 07:59, Mikael Abrahamsson <swmike@swm.pp.se> wrote:

> The scary part isn't enabling IPv6, it's enabling IPv4v6 or capability to do so. When advertised as capability to visiting SGSN it might refuse to bring up any bearer at all. So this is why the draft suggests it might be a good idea to not advertise this to roaming partners.

AFAIK the reports of problems that I assume the roaming-analysis draft came out of are a couple of years old.

It would be nice to have fresh measurements of how bad the problem is now. If an operator with lots of roamers in the areas previously seen affected to turn it on again for 15 minutes and see what happens.

I contacted the vendor I heard mentioned. They said they weren’t the only one but that the problem dated from 2008 code which has long since been patched.

Ross

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