Store session on mysql

Hello I currently work with the version 2.1.6 without any problem, session of my users are stored in the file "radutmp. I would store them at the same time in mysql, is this possible? Is there any page where this is documented? I want to make a script for my squid server then checks against mysql search if the user is connected, compare against a file if it exists in that list, take the IP address that you assign and freeradius in the squid allows internet access. Suggestions? Greetings Michel ---------------------------------------------- Webmail, servicio de correo electronico Casa de las Americas - La Habana, Cuba.