rarp(8) [linux man page]

RARP(8) 						     Linux Programmer's Manual							   RARP(8)

NAME

       rarp - manipulate the system RARP table

SYNOPSIS

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

NOTE

       This  program  is  obsolete.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

DESCRIPTION

       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

       -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 tech-
	      nologies 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 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

       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

       /proc/net/rarp,

SEE ALSO

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

AUTHORS

       Ross D. Martin, <martin@trcsun3.eas.asu.edu>
       Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
       Phil Blundell, <Philip.Blundell@pobox.com>

net-tools							   4 August 1997							   RARP(8)

RARP(8) 						     Linux Programmer's Manual							   RARP(8)

NAME

       rarpd - Reverse Address Resolution Protocol (RARP) daemon

SYNOPSIS

       rarpd [-aAvode] [-b bootdir] [interface]

DESCRIPTION

       Rarpd  is a daemon which responds to RARP requests.  RARP is used by some machines at boot time to discover their IP address.  They provide
       their Ethernet address and rarpd responds with their IP address if it finds it in the ethers database  (either  /etc/ethers  file  or  NIS+
       lookup)	and  using  DNS  lookup  if ethers database contains a hostname and not an IP address.	By default rarpd also checks if a bootable
       image with a name starting with the IP address in hexadecimal uppercase letters is present in the TFTP boot directory (usually /tftpboot  )
       before it decides to respond to the RARP request.

       The  optional argument interface restricts the daemon instance to access only the indicated network interface. Only a single name is possi-
       ble.

OPTIONS

       -a     Do not bind to the interface.

       -A     Respond to ARP as well as RARP requests.

       -v     Tell the user what is going on by being verbose.

       -d     Debugging mode. Do not detach from the tty. This also implies verbose mode.

       -e     Skip the check for bootable image in the TFTP boot directory. If not present, then even if the Ethernet address is  present  in  the
	      ethers database but the bootable image for the resolved IP does not exist, rarpd will not respond to the request.

       -o     Accept offlink packages on the active interfaces.

       -b bootdir
	      Access bootdir instead of the default /tftpboot as the TFTP boot directory for bootable image checks.

OBSOLETES

       This daemon rarpd obsoletes kernel rarp daemon present in Linux kernels up to 2.2 which was controlled by the rarp(8) command.

SIGNALS

       SIGHUP Renew the internal address list, which records IPv4 addresses available at each active network interface. The restriction set by the
	      command line argument interface is still in effect, if in use.

FILES

       /etc/ethers,
       /etc/nsswitch.conf,
       /tftpboot

SEE ALSO

       ethers(5)

AUTHORS

       Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
       Jakub Jelinek, <jakub@redhat.com>

rarpd								   7 April 2000 							   RARP(8)