Mac-address based auth with Radius for wlans

[Martin Jessa]

Hi Guys.

I have Wireless Acess Points which are able to talk to Raius servers.
I was wondering if it was possible to somehow combine Mac-address authentication with SQL stored user data, i.e username at domain.com with some pass will get his MAC-address stored in a database when he authenticates and then he gets an IP handed out by the Radius server.
Is there any tool that can do that ?

Thanks in advance, 
YazzY