Random IP for v6 not assigned (privacy extension not work)

Yes I know. But can we implement random MAC (to get random IPv6 from DHCP) for local network? (Because most of ISP’s are able to see all connected devices with local IPv4, IPV6, MAC, host-name etc…)

Im already asking how to do that (changing MAC) on local network? (MAC for IPv4 changes but MAC for IPv6 does not change because I always get same IPv6 from DHCP on my local network).

If on my local-network IPv6 is not assigned by DHCP, that means Fedora set it. In this case I will ask if Fedora can change it randomly?