Freeradius Version: 2.1.12+dfsg-1.2ubuntu8.1 /etc/freeradius/radiusd.conf accounting { switch "%{Hint}" { case "session" { redundant { module-sql-session write-backlog ok } } case "service" { redundant { module-sql-service write-backlog ok } } } } In debug sql returns "noop" Mon Feb 1 13:12:58 2016 : Debug: rlm_sql (module-sql-session): Reserving sql socket id: 14 Mon Feb 1 13:12:58 2016 : Debug: rlm_sql_mysql: query: call freeradius_session_sql('2016-02-01 13:12:58', '7c4d32221312f4c7', '', 'test-user', '172.12.12.5', '172.1.1.52', 0, 0, 0, 0, 0, 0, 0); Mon Feb 1 13:12:58 2016 : Debug: rlm_sql (module-sql-session): Released sql socket id: 14 Mon Feb 1 13:12:58 2016 : Info: +++++[module-sql-session] returns noop Mon Feb 1 13:12:58 2016 : Info: [write-backlog] expand: /var/log/freeradius/radacct/backlog/write-backlog-%Y-%m-%d-%H.log -> /var/log/freeradius/radacct/backlog/write-backlog-2016-02-01-13.log Mon Feb 1 13:12:58 2016 : Info: [write-backlog] /var/log/freeradius/radacct/backlog/write-backlog-%Y-%m-%d-%H.log expands to /var/log/freeradius/radacct/backlog/write-backlog-2016-02-01-13.log Mon Feb 1 13:12:58 2016 : Info: [write-backlog] Acquired filelock, tried 1 time(s) Mon Feb 1 13:12:58 2016 : Info: [write-backlog] expand: %t -> Mon Feb 1 13:12:58 2016 Mon Feb 1 13:12:58 2016 : Info: +++++[write-backlog] returns ok Mon Feb 1 13:12:58 2016 : Info: ++++- group safe-module-sql-session returns ok Mon Feb 1 13:12:58 2016 : Info: +++- case session returns ok Mon Feb 1 13:12:58 2016 : Info: ++- switch %{Hint} returns ok BUT in tcpdump Mysql Response OK