freeradius -X starts a freeradius at the console. Not via systemd. So it is running in the forground. systemd restart freeradius starts another instance in the background - which can't run because of the foreground process. So what do you do with the forground process? Just press Ctrl-C to stop it. -----Ursprüngliche Nachricht----- Von: Freeradius-Users <freeradius-users-bounces+walter.schober=neotel.at@lists.freeradius.org> Im Auftrag von Benjamin Diehl Gesendet: Freitag, 1. Oktober 2021 14:34 An: FreeRadius users mailing list <freeradius-users@lists.freeradius.org> Betreff: Re: AW: AW: Help with FreeRadius Server not binding to auth address The only command I have used is systemctl restart freeradius.service , guessing that is the issue restarting it defaults it back to the old settings, correct?