RARPD(8)                OpenBSD System Manager's Manual               RARPD(8)

NAME
     rarpd - reverse ARP daemon

SYNOPSIS
     rarpd [-adflt] interface

DESCRIPTION
     rarpd services Reverse ARP requests on the Ethernet connected to
     interface.  Upon receiving a request, rarpd maps the target hardware ad-
     dress to an IP address via its name, which must be present in both the
     ethers(5) and hosts(5) databases.  If a host does not exist in both
     databases, the translation cannot proceed and a reply will not be sent.

     In normal operation, rarpd forks a copy of itself and runs in the back-
     ground.  Anomalies and errors are reported via syslog(3).

     The options are as follows:

     -a      Listen on all the Ethernets attached to the system.  If -a is
             omitted, an interface must be specified.

     -d      Run in debug mode, with all the output to stderr.  This option
             implies the -f option.

     -f      Run in the foreground.

     -l      Log all requests to syslog(3).

     -t      Only honour a request if the server (the host that rarpd is run-
             ning on) can "boot" the target; that is, if a file or directory
             called /tftpboot/ipaddr exists, where ipaddr is the target IP ad-
             dress expressed in uppercase hexadecimal (only the first 8 char-
             acters of filenames are checked).

FILES
     /etc/ethers            Ethernet host name database.
     /etc/hosts             Host name database.
     /var/run/rarpd.pid     Process ID of rarpd.

SEE ALSO
     bpf(4), diskless(8)

     Finlayson, R., Mann, T., Mogul, J.C., and Theimer, M., A Reverse Address
     Resolution Protocol, RFC 903.

AUTHORS
     Craig Leres (leres@ee.lbl.gov) and Steven McCanne (mccanne@ee.lbl.gov).
     Lawrence Berkeley Laboratory, University of California, Berkeley, CA.

OpenBSD 4.7                      May 23, 2008                                1
