I'm trying figure out why my GP preference setting that successfully turns off IPv6 in Windows 7 (until we are ready for it) in our desktop machines as soon as they come up in the domain, doesn't seem to have any affect on our laptops.

We use the OU structure to sort out the types of hardware and specific operating system rather than WMI queries - so Desktops and Laptops live in parallel OU structures with XP and Win7 machines also separated lower down. Planning to change that as soon as I can wrap my head around how to write WMI queries. All our computers are Dell Optiplex (DT) and Latitudes (LT).

I'm guessing that it might have to do with the numbering of the NIC's being different between the two types of platform since Laptops have more "network" interfaces (RJ45/UTP, 802.11bgn, Bluetooth, 1394, 3G) than a Desktop (usually just RJ45/UTP).

Any quick tips?