in.ndpd(1M)

NAME

     in.ndpd - daemon for IPv6 autoconfiguration

SYNOPSIS

     /usr/lib/inet/in.ndpd [-adt] [-f config_file]

DESCRIPTION

     in.ndpd provides both the host and router  autoconfiguration
     components  of  Neighbor  Discovery  for  IPv6 and Stateless
     Address Autoconfiguration for IPv6. In  particular,  in.ndpd
     implements

        o  router discovery;

        o  prefix discovery;

        o  parameter discovery; and

        o  address autoconfiguration.

     Other aspects  of  Neighbor  Discovery  are  implemented  by
     ip6(7P), including:

        o  address resolution;

        o  neighbor unreachability detection; and

        o  redirect.

     The duplicate address detection function is  implemented  by
     ifconfig(1M).

     If the /etc/inet/ndpd.conf file does not exist or  does  not
     set the variable AdvSendAdvertisements to true for a network
     interface, then in.ndpd will make the node a host  for  that
     interface, that is, sending router solicitation messages and
     then using  router advertisement  messages  it  receives  to
     autoconfigure  the  node. Note that in.ndpd only autoconfig-
     ures the addresses of global or site-local  scope  from  the
     prefix advertisement.

     If AdvSendAdvertisements is set to true  for  an  interface,
     then  in.ndpd  will  perform router functions on that inter-
     face, that is,  sending  router  advertisement  messages  to
     autoconfigure  the  attached  hosts, but not use any  adver-
     tisements it receives for autoconfiguration.  However,  when
     sending advertisements,  in.ndpd will use the advertisements
     it sends itself to autoconfigure its prefixes.

OPTIONS

     -a    Turn off stateless address  auto  configuration.  When
           set,  the  daemon does not autoconfigure any addresses
           and does not renumber any addresses.

     -d    Turn on large amounts of debugging output  on  stdout.
           When  set,  the  program  runs  in  the foreground and
           stays attached to the controlling terminal.

     -f  config_file
           Use config_file for configuration information  instead
           of the default /etc/inet/ndpd.conf.

     -t    Turn on tracing (printing) of all  sent  and  received
           packets  tostdout.  When  set, the program runs in the
           foreground and  stays attached to the controlling ter-
           minal.

FILES

     /etc/inet/ndpd.conf
           Configuration file. This file is  not  necesary  on  a
           host,  but  it  is  required  on  a  router  to enable
           in.ndpd to advertise autoconfiguration information  to
           the hosts.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|

SEE ALSO

     ifconfig(1M), ndpd.conf(4), attributes(5), icmp6(7P),ip6(7P)
     attributes(5)

     Narten, T., Nordmark,  E.,  Simpson,  W.RFC  2461,  Neighbor
     Discovery  for  IP  Version  6 (IPv6). The Internet Society.
     December 1998.

     Thomson, S., Narten, T. RFC  2462,  IPv6  Stateless  Address
     Autoconfiguration. The Internet Society. December 1998.

DIAGNOSTICS

     Receipt of a SIGHUP signal will  make  in.ndpd  restart  and
     reread  /etc/inet/ndpd.conf.