Store session on mysql

[michel at casa.co.cu]

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
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