Hi, Paul Thank you for your reply.
This is a low-probability, sporadic problem. Currently, there is no `journalctl -b` information with `debug` on the command line. The unit information of the two services is as follows: 1. systemctl cat systemd-resolved # /usr/lib/systemd/system/systemd-resolved.service # SPDX-License-Identifier: LGPL-2.1-or-later # # 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=Network Name Resolution Documentation=man:systemd-resolved.service(8) Documentation=man:org.freedesktop.resolve1(5) Documentation= https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers Documentation= https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients DefaultDependencies=no After=systemd-sysctl.service systemd-sysusers.service Before=sysinit.target network.target nss-lookup.target shutdown.target initrd-switch-root.target Conflicts=shutdown.target initrd-switch-root.target Wants=nss-lookup.target [Service] AmbientCapabilities=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE BusName=org.freedesktop.resolve1 CapabilityBoundingSet=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE ExecStart=!!/usr/lib/systemd/systemd-resolved LockPersonality=yes MemoryDenyWriteExecute=yes NoNewPrivileges=yes PrivateDevices=yes PrivateTmp=yes ProtectClock=yes ProtectControlGroups=yes ProtectHome=yes ProtectKernelLogs=yes ProtectKernelModules=yes ProtectKernelTunables=yes ProtectSystem=strict Restart=always RestartSec=0 RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6 RestrictNamespaces=yes RestrictRealtime=yes RestrictSUIDSGID=yes RuntimeDirectory=systemd/resolve RuntimeDirectoryPreserve=yes SystemCallArchitectures=native SystemCallErrorNumber=EPERM SystemCallFilter=@system-service Type=notify User=systemd-resolve ImportCredential=network.dns ImportCredential=network.search_domains WatchdogSec=3min [Install] WantedBy=sysinit.target Alias=dbus-org.freedesktop.resolve1.service 2. systemctl cat systemd-sysctl.service # /usr/lib/systemd/system/systemd-sysctl.service # SPDX-License-Identifier: LGPL-2.1-or-later # # 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=Apply Kernel Variables Documentation=man:systemd-sysctl.service(8) man:sysctl.d(5) DefaultDependencies=no Conflicts=shutdown.target After=systemd-modules-load.service Before=sysinit.target shutdown.target ConditionPathIsReadWrite=/proc/sys/net/ [Service] Type=oneshot RemainAfterExit=yes ExecStart=/usr/lib/systemd/systemd-sysctl TimeoutSec=90s ImportCredential=sysctl.* Best regards, Alien Kong
