列出所有 failed 状态的服务
systemctl --failed重置（清除）所有 failed 状态
systemctl reset-failed查看服务日志
systemctl status systemd-networkd-wait-online.service
journalctl -u systemd-networkd-wait-online.service禁用服务
systemctl disable systemd-networkd-wait-online.service
systemctl stop systemd-networkd-wait-online.service重载服务
systemctl daemon-reload
systemctl restart systemd-networkd-wait-online.service