linux-formula/linux/files/openvswitch-switch.systemd

[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