rarpd

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

NAME

     rarpd - reverse ARP daemon

SYNOPSIS

     rarpd [-adflt] if0 [... ifN]

DESCRIPTION

     rarpd services Reverse ARP requests on the Ethernet connected to the
     specified interfaces.  Upon receiving a request, rarpd maps the target
     hardware address 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
     background.  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, a list of interfaces 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
             running on) can "boot" the target; that is, if a file or
             directory called /tftpboot/ipaddr exists, where ipaddr is the
             target IP address expressed in uppercase hexadecimal (only the
             first 8 characters 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 5.1                     August 26, 2010                    OpenBSD 5.1