I also searched on Google, but I did not found something useful.Dec 02 22:53:38 studio256 dbus-daemon[753]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.655' (uid=1000 pid=1831 comm="/usr/lib/firefox-esr/firefox-esr ")
Dec 02 22:53:38 studio256 systemd[1]: Starting Hostname Service...
Dec 02 22:53:38 studio256 dbus-daemon[753]: [system] Successfully activated service 'org.freedesktop.hostname1'
Dec 02 22:53:38 studio256 systemd[1]: Started Hostname Service.
Dec 02 22:54:08 studio256 systemd[1]: systemd-hostnamed.service: Succeeded.
Any hint will be appreciated. The system is an up to date Debian 11 and the browser is indeed Firefox, but I guess it is not the culprit here.