Edit: systemd-hostnamed.service
# SPDX-License-Identifier: LGPL-2.1+ # # This file is part of systemd. # # systemd is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. [Unit] Description=Hostname Service Documentation=man:systemd-hostnamed.service(8) man:hostname(5) man:machine-info(5) Documentation=https://www.freedesktop.org/wiki/Software/systemd/hostnamed [Service] ExecStart=/usr/lib/systemd/systemd-hostnamed BusName=org.freedesktop.hostname1 WatchdogSec=3min CapabilityBoundingSet=CAP_SYS_ADMIN PrivateTmp=yes PrivateDevices=yes PrivateNetwork=yes ProtectSystem=strict ProtectHome=yes ProtectControlGroups=yes ProtectKernelTunables=yes ProtectKernelModules=yes MemoryDenyWriteExecute=yes RestrictRealtime=yes RestrictNamespaces=yes RestrictAddressFamilies=AF_UNIX RestrictSUIDSGID=yes SystemCallFilter=@system-service sethostname SystemCallErrorNumber=EPERM SystemCallArchitectures=native LockPersonality=yes ReadWritePaths=/etc
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