1RDISC6(8)                   System Manager's Manual                  RDISC6(8)
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NAME

6       rdisc - ICMPv6 Router Discovery tool
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SYNOPSIS

9       rdisc6 [-qv] [-r attempts] [-w wait_ms] [ IPv6 address] <iface>
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DESCRIPTON

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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OPTIONS

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
35              (default).
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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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SECURITY

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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SEE ALSO

77       ndisc6(8), ipv6(7)
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AUTHOR

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)
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