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 possible.

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>