802.1x authentication with computer credentials

Hello

I am setting up a wlan with 802.1x authentication using eap-tls, hp
access points and ias. I have configured the enterprise CA, the ias
server, the group policies, configured the ap, created certificates for
my client machines and so on. The network operates flawlessly when I log
in on the machine as the domain user, using the domain password that has
been cached on the client. In other words, I have no network
connectivity at that point, but as soon as the user is logged in the
wireless network starts to work, I would assume by using the
certificates the logged in user has on his account. How ever, if the
password is not in the cache, I get the error about domain not being
available. Seems that the network is not working at all before the user
logs in.

I have requested (and received) a computer certificate for the local
computer. I have, in ad, allowed dial-in connections for the computer
account. My ras profile currently allows all connections as long as they
originate from the wlan. The IAS server event log shows no events until
the successful authentication by user event, ie, no errors or failed
authentications by the computer account.

In the group policy that pushes the wireless network settings to the
client computer, I have set up the settings just like in this example
image from technet:

http://www.microsoft.com/library/med...070306_big.gif

As far as I understand, the last two options should specifically allow
me to use the wireless network before user logon, using the computer
certificate I have on the client?

Is there some further setting somewhere where I have to allow the
computer to authenticate to the wlan before the user logs in?