After your running freeradius -X and found the error Detail Error: Error is Failed binding to auth address 127.0.0.1 port 18120 bound to server inner-tunnel: Address already in use Troubleshoot: OR freeradius -X is debugging mode, if you freeradius running before your run this command. Please stop the service freeradius and run command.
Category: Freeradius
Freeradius – Failed to link to module ‘rlm_rest’
Detail errors: Error is Failed to link to module ‘rlm_rest’: /usr/lib/freeradius/rlm_rest.so: cannot open shared object file: No such file or directory Fixing: $ sudo apt install freeradius-rest Run command again $ sudo systemctl start freeradius Reff: https://freeradius-users.freeradius.narkive.com/Vy4RAvZV/rlm-rest-error