Released IP info

Hi, I have a very simple query regarding following radius.log entry when a PPP session is disconnected following log entry is logged: "Sun Dec 9 20:46:05 2012 : Info: Released IP xx.xx.xx.xx (did cli 010010010 user xxx@xxx)" I would like to know what part of the configuration will enable/disable "Released IP" logging to radius.log file. I am using the "default" site file. It used to work for me before, but I had to make a change to disable simultaneous login feature. I disabled the radutmp feature in the sites default file in the "accounting" section and the "session" section. I also disabled "sqlippool" feature which is was left enabled for some reason, but we don't use any sqlippool feature. Regards Raz