1RDISC6(8) System Manager's Manual RDISC6(8)
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6 rdisc - ICMPv6 Router Discovery tool
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9 rdisc6 [-qv] [-r attempts] [-w wait_ms] [ IPv6 address] <iface>
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13 RDisc6 is an Unix program which implements the ICMPv6 Router Discovery
14 in userland (it is normally done by the kernel). It is used to lookup
15 the list of on-link routers and IPv6 prefixes.
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17 It can also be used to force the kernel to update the state of a given
18 IPv6-autoconfigured network interface.
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20 The name of the network interface to probe routers for must be speci‐
21 fied.
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25 -1 or --single
26 Exit as soon as the first advertisement is received.
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29 -h or --help
30 Display some help and exit.
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33 -m or --multiple
34 Wait for possible multiple advertisements and print all of them
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38 -n or --numeric
39 If the optional parameter is not a valid IPv6 address, do not
40 try to resolve it as a DNS hostname.
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43 -q or --quiet
44 Only display advertised IPv6 prefixes. Display nothing in case
45 of failure. That is mostly useful when calling the program from
46 a shell script.
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49 -r attempts or --retry attempts
50 Send ICMPv6 Router Discovery that many times until a reply is
51 received, or abort. By default, rdisc6 will try 3 times before
52 aborting (MAX_RTR_SOLICITATIONS from RFC2461).
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55 -V or --version
56 Display program version and license and exit.
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59 -v or --verbose
60 Display verbose information. That is the default.
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63 -w wait_ms or --wait wait_ms
64 Wait wait_ms milliseconds for a response before retrying. By
65 default, rdisc6 waits 4 second between each attempts (RTR_SOLIC‐
66 ITATION_INTERVAL from RFC2461).
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70 rdisc6 must be setuid root to allow use by non privileged users. It
71 will drop its root privileges before any attempt is made to send or
72 receive data from the network to reduce the possible impact of a secu‐
73 rity vulnerability.
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77 ndisc6(8), ipv6(7)
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81 Rémi Denis-Courmont <remi at remlab dot net>
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83 $Id: rdisc6.8 658 2010-10-31 20:56:30Z remi $
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85 http://www.remlab.net/ndisc6/
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89rdisc6 $Date: 2010-10-31 22:56:30 +0200 (dim. 31 oct. 2010) $ RDISC6(8)