Set ARP entry
Set ARP until reboot
arp -s <IP> <MAC>Sets an ARP entry until reboot
Set ARP permanently
<MAC> <FQDN|IP>edit (or create) /etc/ethers and add the above
arp -s <IP> <MAC>Sets an ARP entry until reboot
<MAC> <FQDN|IP>edit (or create) /etc/ethers and add the above