RARP(8)              Linux System Administrator's Manual             RARP(8)

NAME         top

       rarp - manipulate the system RARP table

SYNOPSIS         top

       rarp [-V] [--version] [-h] [--help]
       rarp -a
       rarp [-v] -d hostname ...
       rarp [-v] [-t type] -s hostname hw_addr

NOTE         top

       This program is obsolete.  From version 2.3, the Linux kernel no
       longer contains RARP support.  For a replacement RARP daemon, see

DESCRIPTION         top

       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.

OPTIONS         top

       -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).


       --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 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.

WARNING         top

       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.

FILES         top


SEE ALSO         top

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

AUTHORS         top

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

COLOPHON         top

       This page is part of the net-tools (networking utilities) project.
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net-tools                        2008-10-03                          RARP(8)