[Unit]
Description=ARP table
Before=network-pre.target
Wants=network-pre.target

[Service]
Type=oneshot
ExecStart=/bin/sh -c 'arptables-restore < /etc/arptables.conf'
ExecReload=/bin/sh -c 'arptables-restore < /etc/arptables.conf'
ExecStop=/bin/sh -c 'arptables-restore < /dev/null'
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target