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in.rarpd(1m) [opendarwin man page]

in.rarpd(1M)						  System Administration Commands					      in.rarpd(1M)

in.rarpd, rarpd - DARPA Reverse Address Resolution Protocol server SYNOPSIS
/usr/sbin/in.rarpd [-d] -a /usr/sbin/in.rarpd [-d] device unit DESCRIPTION
in.rarpd starts a daemon that responds to Reverse Address Resolution Protocol (RARP) requests. The daemon forks a copy of itself that runs in background. It must be run as root. RARP is used by machines at boot time to discover their Internet Protocol (IP) address. The booting machine provides its Ethernet address in a RARP request message. Using the ethers and hosts databases, in.rarpd maps this Ethernet address into the corresponding IP address which it returns to the booting machine in an RARP reply message. The booting machine must be listed in both databases for in.rarpd to locate its IP address. in.rarpd issues no reply when it fails to locate an IP address. in.rarpd uses the STREAMS-based Data Link Provider Interface (DLPI) message set to communicate directly with the datalink device driver. OPTIONS
The following options are supported: -a Get the list of available network interfaces from IP using the SIOCGIFADDR ioctl and start a RARP daemon process on each interface returned. -d Print assorted debugging messages while executing. EXAMPLES
Example 1: Starting An in.rarpd Daemon For Each Network Interface Name Returned From /dev/ip: The following command starts an in.rarpd for each network interface name returned from /dev/ip: example# /usr/sbin/in.rarpd -a Example 2: Starting An in.rarpd Daemon On The Device /dev/le With The Device Instance Number 0 The following command starts one in.rarpd on the device /dev/le with the device instance number 0. example# /usr/sbin/in.rarpd le 0 FILES
/etc/ethers File or other source, as specified by nsswitch.conf(4). /etc/hosts File or other source, as specified by nsswitch.conf(4). /tftpboot /dev/ip /dev/arp ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWbsu | +-----------------------------+-----------------------------+ SEE ALSO
svcs(1), boot(1M), ifconfig(1M), svcadm(1M), ethers(4), hosts(4), netconfig(4), nsswitch.conf(4),attributes(5), smf(5), dlpi(7P) Finlayson, R., Mann, T., Mogul, J., and Theimer, M., RFC 903, A Reverse Address Resolution Protocol, Network Information Center, SRI Inter- national, June 1984. NOTES
The in.rarpd service is managed by the service management facility, smf(5), under the service identifier: svc:/network/rarp Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser- vice's status can be queried using the svcs(1) command. SunOS 5.10 20 Aug 2004 in.rarpd(1M)

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

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, <> Jakub Jelinek, <> rarpd 7 April 2000 RARP(8)
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