rtradvd(1M)															       rtradvd(1M)

NAME

       rtradvd - Router Advertisement daemon for IPv6

SYNOPSIS

       configfile] debuglevel] pidfile] [debugfile]

DESCRIPTION

       the router advertisement daemon for IPv6, implements router functionality as specified by RFC 2461 ("Neighbor Discovery for IP Version 6").
       The daemon listens to router solicitation and sends router advertisement messages on demand and periodically as described in "Neighbor Dis-
       covery  for  IP Version 6".  These advertisements allow any listening host to configure their addresses and some other parameters automati-
       cally without manual intervention.  They can also choose a default router based on these advertisements.

       Router advertisement is configured on a per interface basis, as described in rtradvd.conf(4).  The "PRIVATE" flag on each interface must be
       cleared	in order to enable sending Router Advertisement packets out on that particular interface as described by ifconfig(1M).	The daemon
       does not listen on an interface when the "PRIVATE" flag is set.

       also implements four new Mobile IPv6 ICMPv6 message types, two for use in the dynamic home agent address discovery mechanism, and  two  for
       mobile configuration mechanisms.  These four new ICMPv6 messages are activated if "Home Agent Flag" (see rtradvd.conf(4)) is enabled on any
       configured interface and the daemon detects the Mobile IPv6 kernel module during startup (see mip6mod(7)) or via mip6admin(1M) utility.	In
       this  case, sends the list of prefixes configured with the "Router Address Flag" set to allowing the node to act as a home agent on all the
       links corresponding to these prefixes (see rtradvd.conf(4)).

   Options
	      Specifies that the configuration file will be parsed for syntax
			     errors and coherency.  Any syntax error or incoherency data is printed to will exit with a status 1 if there were any
			     errors or 0 (zero) if there were not.  All other command line options except are ignored.

	      Use a configuration file other than

	      Print debugging information.  If
			     debugfile is not specified, the daemon stays in foreground mode.  A number after the determines the level of messages
			     printed.  The level must be an integer in the range from 1 to 10, with higher numbers resulting in greater detail	in
			     debug messages.

	      Disable printing the inconsistency information via
			     syslog(3C) in router advertisement messages received from other routers on the link.

	      Use a pid file other than

	      debugfile      Specifies	a  debug  file	in  which  to  place debug information.  If a debug file is specified on the command line,
			     detaches from the terminal and runs in the background.  Otherwise, assumes that debugging is desired  to  stderr  and
			     remains in the foreground.

       The daemon includes Mobile IPv6 options in Router Advertisement messages when the configuration file contains the specific Mobile IPv6 key-
       words (see rtradvd.conf(4)).

       The daemon can be started during boot-time initialization.  To do so, see for entries.

       The following signals have the specified effect when sent to the server process using the kill(1) command:

	      causes	   to read the configuration file and reload the database.  If the configuration file contains an error or  inconsistency,
			   the daemon continues with the old configuration database.  The file should be checked for errors.

	      terminates   gracefully.	In this case, before exiting, will transmit router advertisement with Router Lifetime 0 to all the listen-
			   ing interfaces.  This can take up to 10 seconds.

DIAGNOSTICS

       Any errors encountered by in the configuration file, or in normal operation are logged via syslog(3C).

NOTE

       The following ICMPv6 types are assigned for Mobile IPv6:

	      Home Agent Address Discovery Request: ICMPv6 type 144
	      Home Agent Address Discovery Reply: ICMPv6 type 145
	      Mobile Prefix Solicitation: ICMPv6 type 146
	      Mobile Prefix Advertisement: ICMPv6 type 147

       Refer to the for information on configuring Virtual IPv6 Anycast addresses.

AUTHOR

       was developed by HP.

FILES

       The default configuration file

       Process ID of running

       To enable
	      at system initialization.

SEE ALSO

       kill(1), ifconfig(1M), mip6admin(1M), syslog(3C), rtradvd.conf(4), mip6mod(7), ndp(7P).

       1. T. Narten, E. Nordmark, W. Simpson, RFC2461, December 1998.

       2. S. Thompson, T. Narten, RFC2462, December 1998.

       3. D. Johnson, C. Perkins, IETF document.

																       rtradvd(1M)