I am trying to make use of a variable that should be stored as: %{config:client[%{Packet-Src-IP-Address}].shortname} Alan discusses it here... http://lists.cistron.nl/pipermail/freeradius-devel/2005-March/008105.html states it is in CVS back in MARCH 2005 and I am running v1.1.2 and my client is listed in clients.conf by IP address (the same IP address as the source packet) postauth_query = "update wireless_data set tower = '%{config:client[%{Packet-Src-IP-Address}].shortname}' where serial = ..... <radiusd -X> rlm_sql (waverider): Processing sql_postauth radius_xlat: '60:07:93' rlm_sql (waverider): sql_set_user escaped user --> '60:07:93' radius_xlat: Running registered xlat function of module config for string 'client[%{Packet-Src-IP-Address}].shortname' config: No such section client[%{Packet-Src-IP-Address}] in format string client[%{Packet-Src-IP-Address}].shortname radius_xlat: 'update wireless_data set tower = '' where serial = 'E' + substring('60:07:93',2,1) + substring('60:07:93',4,2) + substring('60:07:93',7,2)'