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Groups > alt.comp.microsoft.windows > #3450

Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)?

From "Carlos E. R." <robin_listas@es.invalid>
Newsgroups alt.comp.os.windows-10, alt.comp.microsoft.windows, alt.comp.os.windows-11
Subject Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)?
Date 2026-07-19 21:07 +0200
Message-ID <nc4lkcFiq3fU2@mid.individual.net> (permalink)
References <113gamq$ii0$1@nnrp.usenet.blueworldhosting.com> <nc1pgpF99lmU1@mid.individual.net> <113gdu6$1t8v$1@nnrp.usenet.blueworldhosting.com> <113gevv$1rhj$1@nnrp.usenet.blueworldhosting.com>

Cross-posted to 3 groups.

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On 2026-07-18 20:00, Maria Sophia wrote:
> Maria Sophia wrote:


> Digging into the results, it appears that IPv6 has TWO types of addresses
>   i. Stable IPv6 address which identifies the device
>   ii. Temporary IPv6 address which rotates for privacy
> RFC 8981 protects the temporary address.
> The stable address still exists unless we configure otherwise.
> 
> ISP assigns an IPv6 prefix, so even with privacy extensions:
>   a. Our ISP-assigned prefix reveals our region
>   b. Our ISP-assigned prefix reveals our provider
>   c. Our ISP-assigned prefix may be stable for days or weeks
> Apparently, the RFC 8981 privacy extensions do not hide this.	
> My WISP would be easily noticed in that information I'd think.

The prefix identifies your router, and doesn't change ever. Unless you 
have an stupid ISP which rotates it. This is intentional so that 
everybody takes advantage of the features permitted by this.

In practice, this is irrelevant. With IPv4 you are also identified, even 
if the IP rotates frequently. Your ISP have a list of what IP is 
assigned to who during what interval, so if the police asks, they can 
locate you fast.

-- 
Cheers,
        Carlos E.R.
        ES🇪🇸, EU🇪🇺;

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Thread

Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-18 12:47 -0400
  Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-07-18 17:55 +0100
    Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-18 13:42 -0400
      Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-18 14:00 -0400
        Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Hank Rogers <Hank@nospam.invalid> - 2026-07-18 18:04 -0500
          Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-26 17:13 -0700
        Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Hank Rogers <Hank@nospam.invalid> - 2026-07-18 18:26 -0500
          Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-20 01:57 -0400
            Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-07-20 10:32 +0100
              Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-21 13:46 -0400
                Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-21 13:52 -0400
        Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? "Carlos E. R." <robin_listas@es.invalid> - 2026-07-19 21:07 +0200
      Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-07-18 19:13 +0100
        Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Hank Rogers <Hank@nospam.invalid> - 2026-07-18 18:49 -0500
          Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-19 17:47 -0400
  Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Paul <nospam@needed.invalid> - 2026-07-18 15:26 -0400
    Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-20 01:15 -0400
      Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-20 01:18 -0400
        Re: Have you ever disabled IPv6 for privacy (to prevent IP leaks)? Maria Sophia <mariasophia@comprehension.com> - 2026-07-26 16:56 -0700

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