[Unit]
  Description=DHCP server
  After=network.target
  
  [Service]
  Type=forking
  PIDFile=/run/dhcpd.pid
  ExecStart=/usr/sbin/dhcpd -q -pf /run/dhcpd.pid $OPTIONS $INTERFACES
  KillSignal=SIGINT
  EnvironmentFile=-/etc/default/dhcpd
  
  [Install]
  WantedBy=multi-user.target