everyone will have their mac address embedded into ipv6

[maks]

so you are showing me how you can set static private addresses.

I'm showing you that you can set static ipv6 addresses, period, including a public ipv6 address if I was stupid enough to connect a windows 7 machine directly to the internet

your datalink device's mac address will be your wan address, you will be identifiable through that.

then buy a static ip, who cares. what are you concerned about, that people will be able to figure out what brand of router you use? they can already do that you know.