Re: Address privacy (was: Re: RFC4941bis: consequences of many addresses for the network)

Ole Troan <otroan@employees.org> Sun, 26 January 2020 07:13 UTC

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From: Ole Troan <otroan@employees.org>
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Subject: Re: Address privacy (was: Re: RFC4941bis: consequences of many addresses for the network)
Date: Sun, 26 Jan 2020 08:13:44 +0100
Message-Id: <36CC44E1-D74F-4C76-B9FD-E56A81FC9BD6@employees.org>
References: <6f2a8e5a-a4f6-219b-d7c8-ba79ed257785@huitema.net>
Cc: Jared Mauch <jared@puck.nether.net>, Tom Herbert <tom@herbertland.com>, Michael Richardson <mcr+ietf@sandelman.ca>, 6man WG <ipv6@ietf.org>
In-Reply-To: <6f2a8e5a-a4f6-219b-d7c8-ba79ed257785@huitema.net>
To: Christian Huitema <huitema@huitema.net>
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> On 26 Jan 2020, at 06:41, Christian Huitema <huitema@huitema.net> wrote:
> 
> On 1/25/2020 4:18 PM, Jared Mauch wrote:
> 
>> I'm not convinced that I get more privacy by using the privacy
>> addresses and more than encoding my emails with rot13. 
>> 
>> The industry has far more advanced ways to fingerprint users. The data
>> done by https://amiunique.org/ folks as well as others make it clear
>> that IP addresses aren't the means of tracking that I believe the
>> concerns that introduced privacy addresses were attempting to solve.
> 
> Yes, there are many leaks. That not a reason to not plug our own leak,
> i.e. the use of IP addresses as unique identifiers. As the web leaks are
> progressively plugged by privacy oriented browsers or by fingerprint
> blocking add-ons, the importance of address privacy increases.

I do wonder if rotating the iid is significantly better than a stable per-link 7217 iid. 

Isn’t the first thing an application does to use the temporary address to authenticate with a service, that then turns around and sells the information abo the user to address mapping on the open market?
Ignoring all the cookies and other tracking mechanisms already in place...

Ole