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30 .\" $FreeBSD: src/usr.sbin/rtsold/rtsold.8,v 1.1.2.7 2003/03/11 22:31:33 trhodes Exp $
38 .Nd router solicitation daemon
57 utility is the daemon program to send ICMPv6 Router Solicitation messages
58 on the specified interfaces.
59 If a node (re)attaches to a link,
61 sends some Router Solicitations on the link destined to the link-local scope
62 all-routers multicast address to discover new routers
63 and to get non link-local addresses.
67 utility should be used on IPv6 hosts
71 If you invoke the program as
73 it will transmit probes from the specified
75 without becoming a daemon.
87 sends at most 3 Router Solicitations on an interface
88 after one of the following events:
92 Just after invocation of
96 The interface is up after a temporary interface failure.
99 utility detects such failures by periodically probing to see if the status
100 of the interface is active or not.
101 Note that some network cards and drivers do not allow the extraction
105 cannot detect the change of the interface status.
107 Every 60 seconds if the
109 option is specified and the
111 daemon cannot get the interface status.
112 This feature does not conform to the IPv6 neighbor discovery
113 specification, but is provided for mobile stations.
114 The default interval for router advertisements, which is on the order of 10
115 minutes, is slightly long for mobile stations.
116 This feature is provided
117 for such stations so that they can find new routers as soon as possible
118 when they attach to another link.
123 has sent a Router Solicitation, and has received a valid Router Advertisement,
124 it refrains from sending additional solicitations on that interface, until
125 the next time one of the above events occurs.
127 When sending a Router Solicitation on an interface,
129 includes a Source Link-layer address option if the interface
130 has a link-layer address.
132 Upon receipt of signal
135 will dump the current internal state into
136 .Pa /var/run/rtsold.dump .
139 .Bl -tag -width indent
141 Autoprobe outgoing interface.
145 will try to find a non-loopback, non-point-to-point, IPv6-capable interface.
148 finds multiple interfaces,
150 will exit with error.
155 Enable more debugging including the printing of internal timer information.
159 from becoming a daemon (foreground mode).
160 Warning messages are generated to standard error
164 Enable mobility support.
165 If this option is specified,
167 sends probing packets to default routers that have advertised Router
169 when the node (re)attaches to an interface.
170 Moreover, if the option is specified,
172 periodically sends Router Solicitation on an interface that does not support
176 Perform only one probe.
177 Transmit Router Solicitation packets until at least one valid Router
178 Advertisement packet has arrived on each
183 .Ex -std rtsold rtsol
186 .Bl -tag -width /var/run/rtsold.dump -compact
187 .It Pa /var/run/rtsold.pid
188 the pid of the currently running
190 .It Pa /var/run/rtsold.dump
191 dumps internal state on.
201 utility is based on the
203 utility, which first appeared in WIDE/KAME IPv6 protocol stack kit.
206 utility is now integrated into
210 In some operating systems, when a PCMCIA network card is removed
211 and reinserted, the corresponding interface index is changed.
214 assumes such changes will not occur, and always uses the index that
215 it got at invocation. As a result,
217 may not work if you reinsert a network card.
220 should be killed and restarted.
222 The IPv6 autoconfiguration specification assumes a single-interface host.
223 You may see kernel error messages if you try to autoconfigure a host with
225 Also, it seems contradictory for