RTSOLD(8) BSD System Manager's Manual RTSOLD(8)

NAME
     rrttssoolldd - router solicitation daemon

SYNOPSIS
     rrttssoolldd [-ddDDffmm11] interface ...
     rrttssoolldd [-ddDDffmm11] -aa
     rrttssooll [-ddDD] interface ...
     rrttssooll [-ddDD] -aa

DESCRIPTION
     rrttssoolldd is the daemon program to send ICMPv6 Router Solicitation messages
     on the specified interfaces.  If a node (re)attaches to a link, rrttssoolldd
     sends some Router Solicitations on the link destined to the link-local
     scope all-routers multicast address to discover new routers and to get
     non link-local addresses.

     rrttssoolldd should be used on IPv6 hosts (non-router nodes) only.

     If you invoke the program as rrttssooll, it will transmit probes from the
     specified interface, without becoming a daemon.  In other words, rrttssooll
     behaves as ``rrttssoolldd -ff11 interfaces''.

     Specifically, rrttssoolldd sends at most 3 Router Solicitations on an interface
     after one of the following events:

     ++oo   Just after invocation of rrttssoolldd daemon.
     ++oo   The interface is up after a temporary interface failure.  rrttssoolldd
         detects such failures by periodically probing to see if the status of
         the interface is active or not.  Note that some network cards and
         drivers do not allow the extraction of link state.  In such cases,
         rrttssoolldd cannot detect the change of the interface status.
     ++oo   Every 60 seconds if the -mm option is specified and the rrttssoolldd daemon
         cannot get the interface status.  This feature does not conform to
         the IPv6 neighbor discovery specification, but is provided for mobile
         stations.  The default interval for router advertisements, which is
         on the order of 10 minutes, is slightly long for mobile stations.
         This feature is provided for such stations so that they can find new
         routers as soon as possible when they attach to another link.

     Once rrttssoolldd has sent a Router Solicitation, and has received a valid
     Router Advertisement, it refrains from sending additional solicitations
     on that interface, until the next time one of the above events occurs.

     When sending a Router Solicitation on an interface, rrttssoolldd includes a
     Source Link-layer address option if the interface has a link-layer
     address.

     Upon receipt of signal SIGUSR1, rrttssoolldd will dump the current internal
     state into /var/run/rtsold.dump.

OOPPTTIIOONNSS
     -aa      Autoprobe outgoing interface.  rrttssoolldd will try to find a non-
             loopback, non-point-to-point, IPv6-capable interface.  If rrttssoolldd
             finds multiple interfaces, rrttssoolldd will exit with error.

     -dd      Enable debugging.

     -DD      Enable more debugging including the printing of internal timer
             information.

     -ff      -ff prevents rrttssoolldd from becoming a daemon (foreground mode).
             Warning messages are generated to standard error instead of
             syslog(3).

     -mm      Enable mobility support.  If this option is specified, rrttssoolldd
             sends probing packets to default routers that have advertised
             Router Advertisements when the node (re)attaches to an interface.
             Moreover, if the option is specified, rrttssoolldd periodically sends
             Router Solicitation on an interface that does not support
             SIOCGIFMEDIA ioctl.

     -11      Perform only one probe.  Transmit Router Solicitation packets
             until at least one valid Router Advertisement packet has arrived
             on each interface, then exit.

DIAGNOSTICS     The rrttssoolldd utility exits 0 on success, and >0 if an error occurs.

FILES
     /var/run/rtsold.pid   the pid of the currently running rrttssoolldd.
     /var/run/rtsold.dump  dumps internal state on.

SEE ALSO
     rtadvd(8), sysctl(8)

HISTORY     The rrttssoolldd command is based on the rrttssooll command, which first appeared in
     WIDE/KAME IPv6 protocol stack kit.  rrttssooll is now integrated into
     rtsold(8).

BUGS
     In some operating systems, when a PCMCIA network card is removed and
     reinserted, the corresponding interface index is changed.  However,
     rrttssoolldd assumes such changes will not occur, and always uses the index
     that it got at invocation. As a result, rrttssoolldd may not work if you rein-
     sert a network card.  In such a case, rrttssoolldd should be killed and
     restarted.

     The IPv6 autoconfiguration specification assumes a single-interface host.
     You may see kernel error messages if you try to autoconfigure a host with
     multiple interfaces.  Also, it seems contradictory for rrttssoolldd to accept
     multiple interface arguments.

BSD                              May 17, 1998                              BSD