Hello All, I am trying to do this: if (Called-Station-ID =~ /:ssid$/) { rewrite_calling_station_id if(!"%{sql_mac:SELECT COUNT(*) FROM 'arguswifi.macaddress' WHERE mac = '%{Calling-Station-ID}' = 1}"){ reject } } But getting the following in -X: WARNING: Unknown module "sql_mac" in string expansion "%" Also if I look through the debug log there seems to be no mentioning of sql_mac. sql.conf is uncommented in radiusd.conf. My sql.conf: sql sql_mac { database = "mysql" driver = "rlm_sql_${database}" server = "mysql.server" login = "dbuser" password = "dpPwd" radius_db = "macdb" sqltrace = yes sqltracefile = ${logdir}/sqltrace.sql num_sql_socks = 5 connect_failure_retry_delay = 60 lifetime = 0 max_queries = 0 } What am I doing wrong? Thanks again, Bertalan