User + Password + AMC address group authentication

Dear all, I would like to do the following: For a user FreeRADIUS should check the user name, password, and the MAC address. The MAC address can be one of many in a list stored in a database. So, this is not about a single user logging in on only one device. I have taken a look at the rad(group)check table, but it seems that ALL attributes should check out alright for the user to be authenticated. So, I cannot just simply add a list of all possible user/MAC combinations. How can I best achieve this? Any help would be appreciated. Best regards, Aaeron Jansen