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arp(1M)								       arp(1M)

NAME    [Toc]    [Back]

     arp - address resolution display and control

SYNOPSIS    [Toc]    [Back]

     arp [ -nv ] hostname
     arp [ -nv ] -a
     arp [ -nv ] -c
     arp -d hostname
     arp -s hostname ether_addr	[ temp ] [ pub ] [ proxy-only ]
     arp -f filename

DESCRIPTION    [Toc]    [Back]

     The arp program displays and modifies the Internet-to-Ethernet address
     translation tables	used by	the address resolution protocol	(arp(7P)).

     With no flags, the	program	displays the current ARP entry for hostname.
     The host can be specified by name or by number, using Internet dot

     The arp flags are:

     -a	 Display all of	the current ARP	entries	by reading the table from the
	 routing socket.

     -c	 Clear all of the current non-permanent	ARP entries from the table.

     -d	hostname
	 A superuser can delete	an entry for the host called hostname.

     -s	hostname ether_addr
	 Creates an ARP	entry for the host called hostname with	the Ethernet
	 address ether_addr.  The Ethernet address is given as six hexadecimal
	 bytes separated by colons.  The entry is permanent unless the word
	 temp is given in the command.	If the word pub	is given, the entry is
	 published, that is, this system will act as an	ARP server responding
	 to requests for hostname even though the host address is not its own.
	 If proxy-only is given, the entry is published, but it	will not be
	 used by this system for packets send to hostname, which can be	useful
	 when hostname is reached by other means such as a PPP link.

     -f	filename
	 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 ]	[ proxy-only ]

	 with argument meanings	as given above.

     -n	 Causes	mapping	of IP addresses	to hostnames to	be suppressed.

									Page 1

arp(1M)								       arp(1M)

     -v	 Causes	additional information to be displayed,	such as	the interface
	 associated with entries and the age of	the arp	entries. Only a
	 superuser may use this	flag.

EXAMPLES    [Toc]    [Back]

     Command lines are followed	by the output.

     A completed successful entry:

	  # arp	moose
	  moose	( at 8:0:69:2:24:3e

     A completed successful entry that is marked permanent and published:

	  # arp	rainbow
	  rainbow (	at 8:0:69:2:4:94 permanent published

     An	incomplete entry:

	  # arp	ender
	  ender	(	at (incomplete)

     A nonexistent entry:

	  # arp	foobar
	  foobar ( -- no entry

SEE ALSO    [Toc]    [Back]

     ifconfig(1M), arp(7P), inet(7F).

									PPPPaaaaggggeeee 2222
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