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Re: [v6ops] IPv6 and 5G will make life hell for spooks and cops say Australia's spooks and cops • The Register

Alexandre Petrescu <alexandre.petrescu@gmail.com> Thu, 08 March 2018 10:45 UTC

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To: Mikael Abrahamsson <swmike@swm.pp.se>
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From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Subject: Re: [v6ops] IPv6 and 5G will make life hell for spooks and cops say Australia's spooks and cops • The Register
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Le 07/03/2018 à 08:33, Mikael Abrahamsson a écrit :
> On Mon, 5 Mar 2018, Alexandre Petrescu wrote:
> 
>> Well, if 5G IPv6 is a hell for spooks and cops then 4G IPv4 was a
>> hell too: nobody tracks people by IP addresses in cellular
>> networks.
> 
> The information about who had what address at what time is typically
>  kept, so that an IP address can be tracked back to a subscription.

YEs that information is typically kept, but it's complex to use to track
someone because it changes all the time at each handover or re-connection.

> In IPv6, this is done by prefix and not by address in a 3GPP network
> (since a /64 is used per PDP).

YEs, I agree.  YEt the certainty that IP prefix gives is fuzzy.

(IP address privacy technology _is_ good but little relevant in mobile
networks)

Alex

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