rarpd: userspace reverse ARP daemon
rarpd:
rarpd: Rarpd is a daemon which responds to RARP requests. RARP is used by
rarpd: some machines at boot time to dis­cover their IP address. They provide
rarpd: their Ethernet address and rarpd responds with their IP address if it
rarpd: finds it in the ethers database (either /etc/ethers file or NIS+ lookup)
rarpd: and using DNS lookup if ethers database contains a hostname and not an
rarpd: IP address. By default rarpd also checks if a bootable image with a name
rarpd: starting with the IP address in hexadecimal uppercase letters is present
rarpd: in the TFTP boot directory (usually /tftpboot ) before it decides to
rarpd: respond to the RARP request.