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Edit File: rdisc.service
[Unit] Description=Network Router Discovery Daemon Documentation=man:rdisc(8) Requires=network.target After=network.target [Service] EnvironmentFile=-/etc/sysconfig/rdisc ExecStart=/usr/sbin/rdisc -f -t $OPTIONS $SEND_ADDRESS $RECEIVE_ADDRESS AmbientCapabilities=CAP_NET_RAW PrivateTmp=yes PrivateUsers=yes ProtectSystem=strict ProtectHome=yes ProtectControlGroups=yes ProtectKernelTunables=yes ProtectKernelModules=yes MemoryDenyWriteExecute=yes RestrictRealtime=yes RestrictNamespaces=yes SystemCallArchitectures=native LockPersonality=yes NoNewPrivileges=yes [Install] WantedBy=multi-user.target