isibootd —
TRFS based network boot server
  
    | isibootd | [ -dtracelevel]
      [-iinterface]
      [-sdirectory] | 
The isibootd command is a server which supports OMRON
  LUNA's network boot protocol based on the Transparent Remote File System
  (TRFS) protocol. The TRFS protocol uses special Ethernet type packets and
  works within a local network.
isibootd is a simple TRFS server that only
    supports client reads for booting and exports files in a specified
    directory. isibootd accepts requests only from
    clients listed in the /etc/ethers and have valid
    hostnames.
The options are as follows:
  - -dtracelevel
- Run isibootdin debug mode with specified
      tracelevel. The tracelevel can be value 1, 2, or 3, and greater tracelevel
      provides more detailed trace output. The server will not fork in the debug
      mode.
- -iinterface
- Specify a network interface to service network boot. If not specified
      isibootdsearches available network interfaces
      (excluding loopback) and use the first configured “up”
    one.
- -sdirectory
- Specify a directory containing boot files to be served by
      isibootd. If not specifiedisibootduses /tftpboot by
      default.
  - /etc/ethers
-  
- /etc/hosts
-  
- /tftpboot
-  
- /var/run/isibootd.pid
-  
isibootd is based on isiboot
  utility which was originally written by Tohru
  Nishimura for NetBSD/luna68k development, and
  first appeared in NetBSD 6.0.