address resolution display and control
arp hostname arp -a arp -d hostname arp -s hostname ether_addr [temp] [pub] [trail] arp -f filename
hostname ether_addr [temp] [pub] [trail]
with argument meanings as given for option -s.
The entry will be permanent unless the word temp is given in the command.
If pub is given, the entry will be “published.” That is, this system will act as an ARP server, responding to requests for hostname, even though the IP address that's mapped to hostname isn't the address of this system.
If trail is given, trailer encapsulations may be sent to this host.
The arp utility displays and modifies the Internet-to-Ethernet address translation tables used by the address resolution protocol, ARP.
With no options, the utility displays the current ARP entry for hostname. The host may be specified by name or by number, using Internet dot notation.