[Unit] Description=Arpwatch daemon which keeps track of ethernet/ip address pairings After=syslog.target network-online.target Documentation=man:arpwatch [Service] Type=forking PrivateTmp=yes ExecStart=/usr/sbin/arpwatch -u arpwatch -e root -s 'root (Arpwatch)' [Install] WantedBy=multi-user.target