Rewriting Exec-Program-Wait

Hello, Just upgraded to freeradius2 2.1.7 on CentOS 5.5. And Exec-Program-Wait no longer works now for accounting packets. Rewrote to exec module. But for performance reasons we were not executing external program for all the packets before. We used more specific user entries in users and acct_users files to return result without executing program. Like: DEFAULT Auth-Type := Accept, NAS-Identifier == "company", Calling-Station-Id =~ "^49", 3GPP-SGSN-Address =~ "^10.20.20." DEFAULT Auth-Type := Accept Exec-Program-Wait = "/etc/raddb/external-auth" How to change that to exec module syntax? So that external-auth would not be called for certain packets? Regards, Mindaugas