ultrix man page for rarpd

rarpd(8c)																 rarpd(8c)

Name
       rarpd - reverse address resolution protocol (RARP) daemon

Syntax
       /usr/etc/rarpd [ interface ] [ -v ] [ -n ] [ -f filename ]

Description
       The daemon maps the Ethernet address of a machine to the machine's Internet Protocol (IP) address.

       When  is  invoked,  it  reads  the  file  (by  default) and waits to process a RARP request.  The file is checked every ten minutes for any
       changes.  If the file has been modified, reads it again. You can disable this feature with the option. You can force a scan of the file	by
       sending the daemon a SIGHUP signal.  See for more information on SIGHUP.

       The  format of the file is described in You can specify a file other than with the option.  The interface is the network interface on which
       the daemon should listen. The command shows the correct interface or interfaces for your system.  The daemon uses the  first  interface	it
       finds, if you do not specify an interface.  See the reference page for more information.

       Because	the  daemon has been implemented with the Ethernet Packet Filter (see you must configure your kernel with the packet filter option
       in order for to function properly.  The packet filter detects RARP broadcast packets and passes them to for processing. The filter priority
       for rarpd is set to 28.

       All messages from the daemon are directed to

Options
       interface      Specifies the system's network interface.

       -v	      Causes  to  operate in verbose mode. This option logs details of RARP to The instance of a RARP request and its response are
		      also logged.

       -n	      Disables checking of the file.  By default, checks the file once every ten minutes, and, if the file was	modified,  rereads
		      the file.  If you specify the option scans the file once at startup time.

       -f filename    Reads an alternate Ethernet address file.

Restrictions
       The ignores all ARP requests sent encapsulated within a RARP packet. You should make all ARP request using the command.

       The machine for which an IP address is being requested must be present in the server's file.

Diagnostics
       The following message is logged to if the Packet Filter is not configured in your kernel:
       Packet Filter is not configured in /vmunix
       The following messages are printed to your screen if the Packet Filter is not configured in your kernel:
       rarpd: cannot find symbol Pfilt_read in /vmunix
       option PACKETFILTER does not appear to be configured in
	      your kernel.

Files
       Database that maps Ethernet addresses to hostnames

See Also
       ethers(3n), packetfilter(4), ethers(5), hosts(5), arp(8c), ifconfig(8c), syslog(8c)
       The Packet Filter: An Efficient Mechanism for User-Level Network Code

																	 rarpd(8c)