Hello, Got a newly built Freeradius server running on Ubuntu server that is showing the following error; radiusd: #### Opening IP addresses and Ports #### listen { type = "auth" ipaddr = * port = 0 limit { max_connections = 16 lifetime = 0 idle_timeout = 30 } Failed binding to auth address * port 1812 bound to server default: Address already in use /etc/freeradius/3.0/sites-enabled/default[59]: Error binding to port for 0.0.0.0 port 1812 By stopping the service, the error goes away, but as soon as the service is restarted the error is back, see below output of the running instances. administrator@zotacradius:~$ sudo ps ax | grep radius 2366 ? Ssl 0:00 /usr/sbin/freeradius -f 2986 pts/1 S+ 0:00 grep --color=auto radius administrator@zotacradius:~$ sudo systemctl stop freeradius administrator@zotacradius:~$ sudo ps ax | grep radius 3022 pts/1 S+ 0:00 grep --color=auto radius After spending a lot of time looking for ways to resolve this issue today, they all talk about processes already using the ports, assuming I'm reading this correctly, then that's not what I'm seeing as there is only the active instance and the grep process. Has anyone got any suggestions on how to resolve this at all? Regards Matt