BOOTPD(8)                                               BOOTPD(8)

     NAME
          bootpd, tftpd - Internet booting

     SYNOPSIS
          ip/bootpd [ -dsq ] [ -f dbfile ] [ -x network ]

          ip/tftpd [-dr] [ -p port ] [ -h homedir ] [ -x network ]

     DESCRIPTION
          Bootpd listens for Internet BOOTP requests and broadcasts a
          suitable reply to each request that matches an entry in the
          network database dbfile (default: /lib/ndb/local).  The
          BOOTP protocol is typically used by a remote system as it
          boots, to obtain its Internet address and other configura-
          tion data such as the addresses of servers (see for instance
          the bootp file in ip(3)).

          Dbfile is in ndb(6) format, as interpreted by attrdb(2).
          Bootpd uses the following attributes:

          auth    authentication server name or address
          bootf   name of the client's boot file
          dom     fully-qualified domain name
          ether   hardware (MAC) address; only Ethernet is supported
          fs      file server name or address
          ip      client's Internet address
          ipgw    gateway from client's subnet (IP address)
          ipmask  subnet mask
          ipnet   network name
          sys     system name (client identifier)

          Bootpd replies to an incoming request only if its hardware
          address matches the value of the ether attribute of an entry
          in dbfile . If found, the reply contains all the other
          requested data that is contained in the entry; if an item is
          missing, it is sought in the entries for successively higher
          networks (described by ipnet entries) that contain the
          requesting system's address.  The `vendor specific' part of
          the reply conveys the file server and authentication server
          addresses to Inferno clients.  Before answering a request,
          bootpd rereads dbfile if it has changed since last read.

          The -s option causes bootpd to sniff the network for BOOTP
          traffic and print it, but not reply.  The -d option prints
          debugging information; giving it twice prints even more.
          The -x option tells bootpd to use a network other than /net.
          Currently bootpd prints a message to standard output each
          time it replies; the -q option keeps it quiet.

          Tftpd is mainly used to send kernels and configuration files

     Page 1                       Plan 9            (printed 12/23/24)

     BOOTPD(8)                                               BOOTPD(8)

          to machines booting from the network.  It listens for incom-
          ing TFTP file transfer requests on the given UDP port
          (default: 69) and responds by sending or receiving a file as
          requested.  Homedir is the current directory for transfers,
          /services/tftpd by default, and requests that use a relative
          path name refer to files in or below that directory.  If the
          -r option is given, absolute path names are also restricted
          to homedir. Tftpd runs as none (the least privileged user)
          and can send only files with general read permission, or
          write files that are generally writable.  Normally tftpd
          uses the network directory /net, but another can be speci-
          fied with the -x option.  The -d option prints a debugging
          trace on standard output.

     FILES
          /lib/ndb/local         network configuration file
          /services/tftpd        default directory for relative path-
                                 names

     SOURCE
          /appl/cmd/ip/bootpd.b
          /appl/cmd/ip/tftpd.b

     SEE ALSO
          attrdb(2), ip(3), ndb(6), cs(8), dns(8)

     Page 2                       Plan 9            (printed 12/23/24)