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Windows XP SP3

I am not sure which additional steps might have to be taken after it has been installed via command line and enabled in the properties of the network connection. I am sitting behind an IPv6 enabled router, and the internet connection is IPv6 enabled as well, and I got an IPv6 address directly after these two steps.

It was not visible straight away on my local machine even though I could see it displayed on Instead I just saw this as additional IP address: fe80::216:6fff:feae:f3fc%4

Apparently this is a link-local address and not routable. I saw my public IPv6 address in in the local configuration only after having disabled the privacy extension.

Preceding unsigned statement by Gunde.

This link says:

If IPv6 privacy extensions are enabled, this address will be assigned to the network interface, but an additional temporary anonymous address will be assigned based on a randomly-generated identifier. The temporary address will be used for outgoing connections, thus avoiding exposing your MAC address to every host you connect to; the permanent address can still be used for incoming connections, allowing you to use this address in DNS entries and so on. Privacy extensions will typically be disabled by default on Linux-based hosts, and enabled on Windows hosts.

There is usually no real reason to disable privacy extensions; however, there is another feature enabled by default on Windows hosts that you may wish to disable. This feature randomizes the identifier used for the permanent address, separately from the temporary addresses assigned by privacy extensions. The randomly generated identifier should be persisted, so the address will not change, but it will bear no relation to the MAC address, thus preventing you from being able to calculate it. If you wish to disable this feature, run the following command with Administrator privileges:

So it seems like you shouldn't disable privacy extensions, because it would only reveal uniquely identifiable information about your MAC address.

--Frazyl 22:09, 16 April 2011 (UTC)