Filter RADIUS Attributes transmitted by WLC?

Afternoon all,
I've got an 8510 on the latest 7.6.120.0 software and I have a standard WPA2/802.1x Wireless LAN.  When Users authenticate we send their traffic off to a RADIUS Server, but when we do, the WLC includes all sorts of superfluous RADIUS attributes in the request (various things like default VLAN ID and all sorts of Cisco Airespace bits)
The RADIUS Server we're using can't filter these attributes out, so I'd like to find a way of having the WLC not send them in the first place...  Any suggestions?
Cheers,
Richard

Hi Richard,
As far as I know you cannot do anything on WLC to stop this. 
Did you speak to TAC and ask about this ? Not sure any hidden commands to do this though.
HTH
Rasika
**** Pls rate all useful responses ****

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