rtradvd.1m (2010 09)

r
rtradvd(1M) rtradvd(1M)
NAME
rtradvd - Router Advertisement daemon for IPv6
SYNOPSIS
rtradvd [-C][-c
configfile][-d debuglevel ][-i][-p
pidfile][debugfile ]
DESCRIPTION
rtradvd, 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 Discovery for IP
Version 6". These advertisements allow any listening host to configure their addresses and some other
parameters automatically 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 (
IFF_PRIVATE) 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.
rtradvd 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,
rtradvd sends mip6mod the list of prefixes configured with the
"Router Address Flag" set to on, allowing the node to act as a home agent on all the links corresponding
to these prefixes (see rtradvd.conf (4)).
Options
-C Specifies that the configuration file will be parsed for syntax errors and coherency.
Any syntax error or incoherency data is printed to stderr. rtradvd will exit
with a status 1 if there were any errors or 0 (zero) if there were not. All other com-
mand line options except -c are ignored.
-c configfile Use a configuration file other than /etc/rtradvd.conf
.
-d debuglevel Print debugging information. If debugfile is not specified, the daemon stays in fore-
ground mode. A number after the d 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.
-i Disable printing the inconsistency information via syslog(3C) in router advertise-
ment messages received from other routers on the link.
-p pidfile Use a pid file other than /var/run/rtradvd.pid
.
debugfile Specifies a debug file in which to place debug information. If a debug file is
specified on the command line,
rtradvd detaches from the terminal and runs in
the background. Otherwise, rtradvd assumes that debugging is desired to stderr
and remains in the foreground.
The
rtradvd daemon includes Mobile IPv6 options in Router Advertisement messages when the
configuration file contains the specific Mobile IPv6 keywords (see rtradvd.conf (4)).
The
rtradvd daemon can be started during boot-time initialization. To do so, see
/etc/rc.config.d/netconf-ipv6 for rtradvd entries.
The following signals have the specified effect when sent to the server process using the kill (1) command:
SIGHUP causes rtradvd 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 syslog file should be checked for errors.
SIGTERM terminates rtradvd gracefully. In this case, before exiting, rtradvd will transmit
router advertisement with Router Lifetime 0 to all the listening interfaces. This can
take up to 10 seconds.
DIAGNOSTICS
Any errors encountered by
rtradvd in the configuration file, or in normal operation are logged via
syslog (3C).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1