Ipv6 defined "privacy extensions" to combat this very thing - and most operating systems use it by default. The idea is that devices generate random addresses i

Ipv6 defined "privacy extensions" to combat this very thing - and most operating systems use it by default. The idea is that devices generate random addresses instead of just using the device Mac address. I can't say how well this defeats tracking, however, this article (https://www.internetsociety.org/blog/2014/12/ipv6-privacy-addresses-provide-protection-against-surveillance-and-tracking/ https://www.internetsociety.org/blog/2014/12/ipv6-privacy-ad...) concludes > ... the ability of security services to track you on IPv4 versus IPv6 is pretty much about the same.