Re: A common problem with SLAAC in "renumbering" scenarios

[JORDI PALET MARTINEZ <[e-mail]>]

There are many other ways to track people. I don't really think that having a different prefix, even if it changes every few minutes, will avoid anyone to be tracked.

In addition to that, I think it is easy for operators to implement a policy such as a configuration web page for your connectivity where you can choose a non-persistent prefix to be changed in your network every "n" hours. Up to the ISP to decide if the default policy is "persistent" or "non-persistent".

Up to each ISP to decide if they allow the customer to choose the number of hours of persistence.

If I'm the one designing this web page, I will make sure to warn the users in the "non-persistent" option, with some text in the line of: "when your prefix is replaced, your network is shortly interrupted, so running transactions may break. In addition to that, it may happen that when the prefix is replaced due to a power out-age, reboot or reset of the router or other network devices, some other devices in your network may remember the old prefix for some time, and you may experience connectivity difficulties during that period".

So it is up to each user to balance if they want a "false privacy feeling" or "network stability and the ability to run services which not depend on crappy dynamic DNS service, which most of the time you also need to pay extra for, and are slower to reach".

Regards,
Jordi
 
 

-----Mensaje original-----
De: ipv6 <[e-mail]> en nombre de Richard Patterson <[e-mail]>
Fecha: jueves, 14 de febrero de 2019, 11:41
Para: JORDI PALET MARTINEZ <jordi.palet=[e-mail]>
CC: 6man WG <[e-mail]>
Asunto: Re: A common problem with SLAAC in "renumbering" scenarios

    On Thu, 14 Feb 2019 at 10:22, JORDI PALET MARTINEZ
    <jordi.palet=[e-mail]> wrote:
    >
    > Why not? This is already happening in IPv4. I've got from a major operator in Spain (and other operators in other countries do the same), the same IPv4 address for decades! I'm talking about residential services, with both DSL and GPON. Not to mention business services were you actually pay for that static address a monthly fee.
    >
    > Any contract can have special clauses, that clearly indicate that "in case of major technology or network changes or similar events, renumbering can happen and in those situations the customers will be alerted with a minimum of 1 month" (this is just an example, I can think in many alternative wordings).
    
    
    If we're ignoring the network topology issues, then the next obvious
    issue is privacy and tracking.
    
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