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 by reading the table
from the file
kmem
(default /dev/kmem) based on the kernel file
vmunix
(default
/vmunix )
-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.
The word
trail
indicates that trailer encapsulations may be sent to this host.
-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