I tried installing freeradius 3 using the ppa at: https://launchpad.net/~freeradius/+archive/ubuntu/stable-3.0 Everything works fine (passed all the tests for using the various types of authentication) but when I try to get it to use mysql, I get the following from "freeradius -X": Unknown action 'rlm_sql_mysql' The only idea I have is from http://wiki.freeradius.org/modules/Rlm_sql_mysql which says you should install mysql first so the libmysqlclient* libraries are automatically detected during compile. Dustin p.s.: here is more of the output: # Instantiating module "logintime" from file /etc/freeradius/mods-enabled/logintime } # modules radiusd: #### Loading Virtual Servers #### server { # from file /etc/freeradius/radiusd.conf } # server server inner-tunnel { # from file /etc/freeradius/sites-enabled/inner-tunnel # Loading authenticate {...} # Loading authorize {...} /etc/freeradius/sites-enabled/sql[31]: Unknown action 'rlm_sql_mysql'. /etc/freeradius/sites-enabled/inner-tunnel[48]: Errors parsing authorize section.