network/systemd/network.service

   1 [Unit]
   2 Description=Network Connectivity
   3 Before=network.target
   4
   5 [Service]
   6 Type=oneshot
   7 RemainAfterExit=yes
   8 ExecStartPre=/sbin/network init
   9 ExecStart=/sbin/network start
  10 ExecStop=/sbin/network stop
  11
  12 [Install]
  13 WantedBy=multi-user.target