sql {

        server = "localhost"

        database = "mysql"

        $INCLUDE sql/${database}/dialup.conf

}

in radiusd.conf

 $INCLUDE sql.conf

in session section of sites-available/default

{

sql

}

in database :- 

simulation use :- 1

carefully check if you have a virtual server in "sites-available" that allow everyone. i was having that problem.

Thanks / Regards