07cf047d5a
control whether to accept RAs per-interface basis. the new stuff ensures the backward compatibility; - the kernel does not accept RAs on any interfaces by default. - since the default value of the flag bit is on, the kernel accepts RAs on all interfaces when net.inet6.ip6.accept_rtadv is 1. Obtained from: KAME MFC after: 1 week
194 lines
4.7 KiB
Groff
194 lines
4.7 KiB
Groff
.\" $FreeBSD$
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.\" $KAME: ndp.8,v 1.15 2001/02/08 07:17:03 itojun Exp $
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.\"
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.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the project nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd May 17, 1998
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.Dt NDP 8
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.Os
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.\"
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.Sh NAME
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.Nm ndp
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.Nd control/diagnose IPv6 neighbor discovery protocol
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.\"
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.Sh SYNOPSIS
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.Nm
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.Fl a
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.Op Fl nt
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.Nm
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.Fl A Ar wait
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.Op Fl nt
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.Nm
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.Fl c
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.Op Fl nt
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.Nm
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.Fl d
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.Op Fl nt
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.Ar hostname
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.Nm
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.Fl f
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.Op Fl nt
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.Ar filename
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.Nm
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.Fl H
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.Nm
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.Fl I
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.Op Cm delete | Ar interface
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.Nm
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.Fl i
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.Ar interface
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.Op Ar flags...
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.Nm
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.Fl p
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.Nm
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.Fl P
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.Nm
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.Fl r
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.Nm
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.Fl R
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.Nm
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.Fl s
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.Op Fl nt
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.Ar nodename
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.Ar ether_addr
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.Op Li temp
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.Op Li proxy
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.\"
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.Sh DESCRIPTION
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The
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.Nm
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utility manipulates the address mapping table
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used by Neighbor Discovery Protocol (NDP).
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.Bl -tag -width Ds
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.It Fl a
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Dump the currently existing NDP entries.
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.It Fl A Ar wait
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Repeat
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.Fl a
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(dump NDP entries)
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every
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.Ar wait
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seconds.
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.It Fl c
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Erase all the NDP entries.
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.It Fl d
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Delete specified NDP entry.
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.It Fl f
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Parse the file specified by
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.Ar filename .
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.It Fl H
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Harmonize consistency between the routing table and the default router
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list; install the top entry of the list into the kernel routing table.
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.It Fl I Op Cm delete | Ar interface
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Shows or specifies the default interface used as the default route when
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there is no default router.
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If no argument is given to the option,
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the current default interface will be shown.
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If an
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.Ar interface
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is specified, the interface will be used as the default.
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If a special keyword
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.Ic delete
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is specified, the current default interface will be deleted from the kernel.
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.It Fl i Ar interface Op Ar flags...
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View ND information for the specified interface.
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If additional arguments
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.Ar flags
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are given,
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.Nm
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sets or clears the specified flags for the interface.
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Possible flags are as follows.
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All of the flags can begin with the
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special character
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.Ql - ,
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which means the flag should be cleared.
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.\"
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.Bl -tag -width Ds -compact
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.It Xo
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.Ic nud
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.Xc
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turn on or off NUD (Neighbor Unreachability Detection) on the
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interface.
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NUD is usually turned on by default.
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.It Xo
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.Ic accept_rtadv
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.Xc
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Specify whether or not to accept Router Advertisement messages
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received on the
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.Ar interface .
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Note that the kernel does not accept Router Advertisement messages
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unless the
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.Li net.inet6.ip6.accept_rtadv
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variable is non-0, even if the flag is on.
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This flag is set to 1 by default.
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.El
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.It Fl n
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Do not try to resolve numeric address to hostname.
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.It Fl p
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Show prefix list.
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.It Fl P
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Flush all the entries in the prefix list.
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.It Fl r
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Show default router list.
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.It Fl R
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Flush all the entries in the default router list.
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.It Fl s
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Register an NDP entry for a node.
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The entry will be permanent unless the word
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.Li temp
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is given in the command.
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If the word
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.Li proxy
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is given, this system will act as a proxy NDP server,
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responding to requests for
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.Ar hostname
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even though the host address is not its own.
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.It Fl t
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Print timestamp on each entries,
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to make it possible to merge output with
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.Xr tcpdump 1 .
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Most useful when used with
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.Fl A .
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.El
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.\"
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.Sh RETURN VALUES
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The
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.Nm
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utility will exit with 0 on success, and non-zero on errors.
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.\"
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.Sh SEE ALSO
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.Xr arp 8
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.\"
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.Sh HISTORY
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The
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.Nm
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utility first appeared in WIDE Hydrangea IPv6 protocol stack kit.
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.\"
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.\" .Sh BUGS
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.\" (to be written)
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