NAME

arp − address resolution display and control

SYNOPSIS

arp hostname
arp -a [ vmunix [ kmem
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(4p)).

With no flags, the program displays the current ARP entry for hostname.  With the -a flag, the program displays all of the current ARP entries by reading the table from the file kmem (default /dev/kmem) based on the kernel file vmunix (default /vmunix). 

With the -d flag, a super-user may delete an entry for the host called hostname. 

The -s flag is given to 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", e.g., this system will respond to ARP requests for hostname even though the hostname is not its own. 

The -f flag 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

arp(4p), ifconfig(8c)

Sun Release 2.0  —  Last change: 1 February 1985