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ARP(8)                    BSD System Manager's Manual                   ARP(8)

NAME
     arp -- address resolution display and control

SYNOPSIS
     arp hostname
     arp -a
     arp -d hostname
     arp -s hostname ether_addr [temp] [pub]
     arp -f filename

DESCRIPTION
     The arp program displays and modifies the Internet-to-Ethernet address translation tables used by the
     address resolution protocol (arp(4)).  With no flags, the program displays the current ARP entry for
     hostname.  The host may be specified by name or by number, using Internet dot notation.

     Available options:

     -a      The program displays all of the current ARP entries.

     -d      A super-user may delete an entry for the host called hostname with the -d flag.

     -s hostname ether_addr
             Create an ARP entry for the host called hostname with the Ethernet address ether_addr.  The
             Ethernet address is given as six hex bytes separated by colons.  The entry will be permanent
             unless the word temp is given in the command.  If the word pub is given, the entry will be
             "published"; i.e., this system will act as an ARP server, responding to requests for hostname
             even though the host address is not its own.

     -f      Causes the file filename to be read and multiple entries to be set in the ARP tables.  Entries
             in the file should be of the form

                   hostname ether_addr [temp] [pub]

             with argument meanings as given above.

SEE ALSO
     inet(3), arp(4), ifconfig(8)

HISTORY
     The arp command appeared in 4.3BSD.

4.3 Berkeley Distribution       April 27, 1995       4.3 Berkeley Distribution