Hi, I am seeing "Invalid operator" error on a file module. # /usr/sbin/radiusd -X Info : Copyright 1999-2023 The FreeRADIUS server project and contributors Info : There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A Info : PARTICULAR PURPOSE Info : You may redistribute copies of FreeRADIUS under the terms of the Info : GNU General Public License Info : For more information about these matters, see the file named COPYRIGHT Info : Starting - reading configuration files ... Debug : Including dictionary file "/etc/raddb/dictionary" Debug : including configuration file /etc/raddb/radiusd.conf Debug : Including files in directory "/etc/raddb/template.d/" Debug : including configuration file /etc/raddb/template.d/default Debug : including configuration file /etc/raddb/clients.conf Debug : Including files in directory "/etc/raddb/global.d/" Debug : including configuration file /etc/raddb/global.d/ldap Debug : Including files in directory "/etc/raddb/mods-enabled/" Debug : including configuration file /etc/raddb/mods-enabled/always Debug : including configuration file /etc/raddb/mods-enabled/files Debug : including configuration file /etc/raddb/mods-enabled/ldap Debug : including configuration file /etc/raddb/mods-enabled/linelog_dhcp Debug : including configuration file /etc/raddb/mods-enabled/redis Debug : including configuration file /etc/raddb/mods-enabled/redis_ippool Debug : including configuration file /etc/raddb/mods-enabled/unpack Debug : Including files in directory "/etc/raddb/policy.d/" ... ... Debug : rlm_redis (redis) [1] - Reserved connection (0) Debug : rlm_redis (redis) [1] - Released connection (0) Debug : Instantiating rlm_always "reject" Debug : Instantiating rlm_files "subnet_policy" Debug : Reading file /etc/raddb/mods-config/files/subnet_policies Error : /etc/raddb/mods-config/files/subnet_policies[1692]: dhcpv4.Router-Address := 25.26.0.1, Error : /etc/raddb/mods-config/files/subnet_policies[1692]: ^ Invalid operator Error : Failed reading /etc/raddb/mods-config/files/subnet_policies Error : /etc/raddb/mods-enabled/files[25]: Instantiation failed for module "subnet_policy" After removing some commented lines or adding some empty lines or empty spaces in the file module, the error goes away. pwd:/etc/raddb/mods-config/files subnet_policies is the file module which gives this error. below is the diff between the problematic file and working file. Just removed a line. # wc subnet_policies* 4438 7982 111085 subnet_policies 4439 7983 111161 subnet_policies.problem # diff subnet_policies.problem subnet_policies 1d0 < ########################################################################### Debug : rlm_redis (redis) [1] - Reserved connection (0) Debug : rlm_redis (redis) [1] - Released connection (0) Debug : Instantiating rlm_always "reject" Debug : Instantiating rlm_files "subnet_policy" Debug : Reading file /etc/raddb/mods-config/files/subnet_policies Debug : Instantiating rlm_files "subscriber_host_policy" Debug : Reading file /etc/raddb/mods-config/files/host_policies Regards, Nagamani Chinnapaiyan