[157215] in North American Network Operators' Group
Re: Another LTE network turns up as IPv4-only
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Thu Oct 11 05:42:41 2012
Date: Thu, 11 Oct 2012 11:42:28 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Bryan Tong <contact@nullivex.com>
In-Reply-To: <CAAARkvJ8byhHC6RnKHtW9mU6E2SDsnKyowJpwB8H3egoOeeesQ@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, 11 Oct 2012, Bryan Tong wrote:
>> Why do you believe that address changes in handover? It's an integral part
>> of 3GPP standard that your existing bearer is used for handover, so your
>> address shouldn't change. If it changes then it means the handover didn't
>> work as designed, probably due to some radio related problem. If the address
>> changed, then it means the bearer was torn down and a new bearer was
>> initiated. This is definitely not expected behaviour. We have plenty of
>> customers with bearers that are up for tens of days in a row.
>
> For that to be true wouldnt support for IPv6 need to be in all
> generations of networks. With that standard in place there can not be
> new protocols without retrofitting. For a user to switch from 6 to 4
> would require and address change however that address change would be
> reliant on DNS which would be out of the scope of network grade
> support.
The goal is to have dual stack in all networks. Single stack IPv6 has
worked for a long time in 2G/3G/4G (I did first trials 2 years ago, it's a
non-brainer). It's the support for a dual stack bearer that is
problematic.
--
Mikael Abrahamsson email: swmike@swm.pp.se
