Hello Arran, Thanks for double checking this. It's weird. Below is what i got. I install freeradius on a fresh linux. Is there any other file that i can verify to prove my source is identical as yours? [root@FC-O ~]# radiusd -v radiusd: FreeRADIUS Version 3.0.0, for host i686-pc-linux-gnu, built on Aug 24 2011 at 23:48:29 Copyright (C) 1999-2011 The FreeRADIUS server project and contributors. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License. For more information about these matters, see the file named COPYRIGHT. [root@FC-O ~]# radmin -e "show client list" 127.0.0.1 [root@FC-O ~]# radmin -e "add client file /usr/local/etc/raddb/alex.conf" [root@FC-O ~]# radmin -e "show client list" 127.0.0.1 192.168.169.74 [root@FC-O ~]# radmin -e "del client ipaddr" ERROR: Must specify <ipaddr> [root@FC-O ~]# radmin -e "del client ipaddr <ipaddr> 192.168.169.74" ERROR: Client 192.168.169.74 was not dynamically defined. [root@FC-O ~]# Regards, Alex -- View this message in context: http://freeradius.1045715.n5.nabble.com/radmin-del-client-error-tp4725176p47... Sent from the FreeRadius - User mailing list archive at Nabble.com.