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

NAME

     arp -- address resolution display and control

SYNOPSIS

     arp [-n] hostname
     arp [-nv] -a
     arp [-v] -d -a
     arp [-v] -d hostname [proxy]
     arp -s hostname ether_addr [temp] [pub [proxy]]
     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.  If the proxy keyword is specified, only the pub-
	     lished ``proxy only'' ARP entry for this host will be deleted.  If used with -a instead of a hostname, it will delete all arp
	     entries.

     -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 described below.

     -n      Show network addresses as numbers (normally arp attempts to display addresses symbolically).

     -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.  If the word proxy is also given, the published entry will be a ``proxy only'' entry.

     -v      Display verbose information when adding or deleting ARP entries.

SEE ALSO

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

HISTORY

     The arp command appeared in 4.3BSD.

BSD
								 January 31, 2006							       BSD