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38 .Nd router solicitation daemon
43 .Op Fl O Ar script-name
47 .Op Fl O Ar script-name
51 .Op Fl O Ar script-name
55 .Op Fl O Ar script-name
60 is the daemon program to send ICMPv6 Router Solicitation messages
61 on the specified interfaces.
62 If a node (re)attaches to a link,
64 sends some Router Solicitations on the link destined to the link-local scope
65 all-routers multicast address to discover new routers
66 and to get non link-local addresses.
69 should be used on IPv6 hosts
73 If you invoke the program as
75 it will transmit probes from the specified
77 without becoming a daemon.
89 sends at most 3 Router Solicitations on an interface
90 after one of the following events:
94 Just after invocation of
98 The interface is up after a temporary interface failure.
100 detects such failures by periodically probing to see if the status
101 of the interface is active or not.
102 Note that some network cards and drivers do not allow the extraction
106 cannot detect the change of the interface status.
108 Every 60 seconds if the
110 option is specified and the
112 daemon cannot get the interface status.
113 This feature does not conform to the IPv6 neighbor discovery
114 specification, but is provided for mobile stations.
115 The default interval for router advertisements, which is on the order of 10
116 minutes, is slightly long for mobile stations.
117 This feature is provided
118 for such stations so that they can find new routers as soon as possible
119 when they attach to another link.
124 has sent a Router Solicitation, and has received a valid Router Advertisement,
125 it refrains from sending additional solicitations on that interface, until
126 the next time one of the above events occurs.
128 When sending a Router Solicitation on an interface,
130 includes a Source Link-layer address option if the interface
131 has a link-layer address.
134 manages a per-interface parameter to detect if a separate protocol is
135 needed for configuration parameters other than host's addresses.
136 At the invocation time, the flag is FALSE, and becomes TRUE when
137 the daemon receives a router advertisement with the OtherConfig flag
139 A script file can be specified to deal with the case
143 start resending router solicitation messages by one of the conditions
145 the daemon resets the parameter because the event may indicate a
146 change on the attached link.
148 Upon receipt of signal
151 will dump the current internal state into
152 .Pa /var/run/rtsold.dump .
155 The options are as follows:
156 .Bl -tag -width indent
158 Autoprobe outgoing interface.
160 will try to find a non-loopback, non-point-to-point, IPv6-capable interface.
163 finds multiple interfaces,
165 will exit with error.
170 Enable more debugging including the printing of internal timer information.
174 from becoming a daemon (foreground mode).
175 Warning messages are generated to standard error
179 Explicitly configure the kernel to accept Router Advertisements and
180 disable IPv6 forwarding.
181 These settings are required for proper
184 Without this option, the current settings will be obeyed;
185 if they are incompatible with proper operation,
186 warning messages will be generated,
187 but Router Solicitations will still be sent.
188 The settings may be changed manually with
193 Enable mobility support.
194 If this option is specified,
196 sends probing packets to default routers that have advertised Router
198 when the node (re)attaches to an interface.
199 Moreover, if the option is specified,
201 periodically sends Router Solicitation on an interface that does not support
205 Perform only one probe.
206 Transmit Router Solicitation packets until at least one valid Router
207 Advertisement packet has arrived on each
210 .It Fl O Ar script-name
211 Specifies a supplement script file to handle the Other Configuration
212 flag of the router advertisement.
213 When the flag changes from FALSE to TRUE,
217 with a single argument of the receiving interface name,
218 expecting the script will then start a protocol for the other
221 must be the absolute path from root to the script file, be a regular
222 file, and be created by the same owner who runs
229 .Bl -tag -width /var/run/rtsold.dump -compact
230 .It Pa /var/run/rtsold.pid
231 the pid of the currently running
233 .It Pa /var/run/rtsold.dump
234 dumps internal state on.
244 command is based on the
246 command, which first appeared in WIDE/KAME IPv6 protocol stack kit.
248 is now integrated into
252 In some operating systems, when a PCMCIA network card is removed
253 and reinserted, the corresponding interface index is changed.
256 assumes such changes will not occur, and always uses the index that
257 it got at invocation.
260 may not work if you reinsert a network card.
263 should be killed and restarted.
265 The IPv6 autoconfiguration specification assumes a single-interface host.
266 You may see kernel error messages if you try to autoconfigure a host with
268 Also, it seems contradictory for