If I don't use a vpn, should I disable IPv6 to avoid my pc's mac address be guessed ?
While paying online, once I saw a bill that included my IPv6, should I be concerned at all?

  • I know this is not an exact duplicate, but it answers your underlying question: what are the risks of exposing your MAC? – schroeder Dec 31 '18 at 16:12
  • @schroeder - Thanks. Should I delete this in that case? – lmao Jan 2 '19 at 12:16

No. You should enable privacy settings for IPv6, so that you use a pseudo generated IP, and not one based on the MAC of the computer. On Windows this appears to be the default, although I have never studied IP allocation on Windows in detail with IPv6.

IPv6 can indeed increase privacy through the use of ephemeral addresses that are short-lived.

As with all technology, you need to understand it and quantify the risks.

  • The link says - You are being followed as the IPv6 addresses are unique, that's scary. By default, all os' must generate a pseudo IP. – lmao Jan 2 '19 at 12:38

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