etc/systemd/system/create_vpn_ipset.service

   1 [Unit]
   2 Description=Create IPSET to forward to VPN
   3 After=network.target
   4
   5 [Service]
   6 User=root
   7 Type=oneshot
   8 ExecStart=/usr/local/bin/create_vpn_ipset
   9 RemainAfterExit=true
  10
  11 [Install]
  12 WantedBy=multi-user.target