[Unit] Description=Open vSwitch Before=network.target After=network-pre.target ovsdb-server.service ovs-vswitchd.service PartOf=network.target Requires=ovsdb-server.service Requires=ovs-vswitchd.service [Service] Type=oneshot ExecStart=/usr/bin/ovs-vsctl set open . external-ids:hostname=%H ExecReload=/bin/true ExecStop=/bin/true RemainAfterExit=yes [Install] WantedBy=multi-user.target