ARP(8) MachTen Programmer’s Manual ARP(8)

NAME
arp - address resolution display and control

SYNOPSIS
arp hostname
arp -a [ vmunix ] [ kmem ]
arp -d hostname
arp -s hostname ether_addr [ temp ] [ pub ] [ trail ]
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. 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"; 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.

The -f flag causes the file filename to be read and multi-
ple entries to be set in the ARP tables. Entries in the
file should be of the form

hostname ether_addr [ temp ] [ pub ] [ trail ]

with argument meanings as given above.