Man page 8 : rarp

rarp - manipulate the system RARP table

rarp [-V] [--version] [-h] [--help]

rarp -a

rarp [-v] -d hostname ...

rarp [-v] [-t type] -s hostname hw_addr

This program is obsolete. From version 2.3, the Linux kernel no longer contains RARP support. For a replacement RARP daemon, see .I ftp://ftp.dementia.org/pub/net-tools

Rarp manipulates the kernel's RARP table in various ways. The primary options are clearing an address mapping entry and manually setting up one. For debugging purposes, the

rarp program also allows a complete dump of the RARP table.

-V

    Display the version of RARP in use.

-v

    Tell the user what is going on by being verbose.

-t type

    When setting or reading the RARP table, this optional parameter tells

rarp which class of entries it should check for. The default value of this parameter is

ether (i.e. hardware code

0x01 for

IEEE 802.3 10Mbps Ethernet Other values might include network technologies such as

AX.25 (ax25) and

NET/ROM (netrom).

-a

--list

    Lists the entries in the RARP table.

-d hostname

--delete hostname

    Remove all RARP entries for the specified host.

-s hostname hw_addr

--set hostname hw_addr

    Create a RARP address mapping entry for host

hostname with hardware address set to

R hw_addr . The format of the hardware address is dependent on the hardware class, but for most classes one can assume that the usual presentation can be used. For the Ethernet class, this is 6 bytes in hexadecimal, separated by colons.

Some systems (notably older Suns) assume that the host replying to a RARP query can also provide other remote boot services. Therefore never gratuitously add rarp entries unless you wish to meet the wrath of the network administrator.

/proc/net/rarp,

arp(8), route(8), ifconfig(8), netstat(8)

Ross D. Martin, <>
Fred N. van Kempen, <>
Phil Blundell, <>