RARPD.8
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- RARPD(8) Minix Programmer's Manual RARPD(8)
- NAME
- rarpd - reverse address resolution protocol daemon
- SYNOPSIS
- rarpd [-d]
- DESCRIPTION
- Rarpd listens on the ethernet for broadcast packets asking for reverse
- address resolution. These packets are sent by hosts at boot time to find
- out their IP address. Rarpd looks up the six octet ethernet number in
- the /etc/ethers file finding a host name. This name is translated to the
- IP address of the host by a DNS lookup. The IP address is then sent to
- the host.
- Before rarpd can start its service it first finds out what the IP
- addresses of the ethernets are. It will look through /etc/ethers to map
- the ethernet addresses to host names. It then uses /etc/hosts to map the
- host names to IP addresses. If this lookup fails then several RARP
- requests are broadcasted in the hope that some RARP server knows the
- addresses. The IP addresses are eventually set in the same way as
- ifconfig(8). (The address is not changed if already set with ifconfig.)
- Note that the host names in the ethers and hosts files must match
- exactly. The DNS can not be used yet, so a simple name can't be
- translated to a fully qualified name.
- Rarpd exits after startup if there are no active ethernets, or if there
- is no ethers file.
- Warning! Sun diskless workstations assume that the first RARP server that
- answers is the host they are to boot from. For this to work all other
- Sun RARP servers delay their answer if they are not also the requestors
- boot server. The Minix rarpd does not have this kludge so it will
- happily engage the Sun boot server to see who can answer the client
- first. Unless your Minix host can actually serve a Sun diskless client,
- it is better not to list any more hosts in the ethers file than
- necessary.
- OPTIONS
- -d Turns on debugging messages. Debugging can also be turned on at
- runtime by sending signal SIGUSR1 or turned off with SIGUSR2.
- SEE ALSO
- ifconfig(8), ethers(5), hosts(5), set_net_default(8), boot(8), inetd(8),
- irdpd(8), nonamed(8).
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- RARPD(8) Minix Programmer's Manual RARPD(8)
- AUTHOR
- Kees J. Bot (kjb@cs.vu.nl)
- 2