Windows 7 and SLAAC?

Gert Doering gert at
Tue Mar 30 13:27:14 CEST 2010


I did an IPv6 training for a customer today, and discovered something
interesting - Windows 7 doesn't use the MAC address of an interface
for EUI64-based stateless autoconfiguration, but "something else".

The host part is the same for the fe80:: and the global IPv6 address,
but it's something completely unrelated to the MAC address.

Does one of you have a pointer for me what Windows 7 is using here?  Some
sort of "windows installation global identifier"?

WinXP uses the MAC address, have no Vista to test right now...

Gert Doering
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