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.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the project nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id: ndp.8,v 1.1 1999/12/10 07:17:07 itojun Exp $
.\"
.Dd May 17, 1998
.Dt NDP 8
.Os KAME
.\"
.Sh NAME
.Nm ndp
.Nd control/diagnose IPv6 neighbor discovery protocol
.\"
.Sh SYNOPSIS
.Nm ndp
.Fl a
.Op Fl ntl
.Nm ndp
.Fl A Ar wait
.Op Fl ntl
.Nm ndp
.Fl c
.Op Fl nt
.Nm ndp
.Fl d
.Op Fl nt
.Ar hostname
.Nm ndp
.Fl f
.Op Fl nt
.Ar filename
.Nm ndp
.Fl H
.Nm ndp
.Fl I
.Ar interface
.Nm ndp
.Fl i
.Ar interface
.Nm ndp
.Fl p
.Nm ndp
.Fl P
.Nm ndp
.Fl r
.Nm ndp
.Fl R
.Nm ndp
.Fl s
.Op Fl nt
.Ar nodename
.Ar ether_addr
.Op temp
.\"
.Sh DESCRIPTION
.Nm
command manipulates the address mapping table
used by Neighbor Discovery Protocol (NDP).
.Bl -tag -width Ds
.It Fl a
Dump the currently existing NDP entries.
.It Fl A Ar wait
Repeat
.Fl a
.Pq dump NDP entries
every
.Ar wait
seconds.
.It Fl c
Erase all the NDP entries.
.It Fl d
Delete specified NDP entry.
.It Fl f
Parse the file specified by
.Ar filename .
.It Fl H
Harmonize consistency between the routing table and the default router
list; install the top entry of the list into the kernel routing table.
.It Fl I
.Ar interface
Specifies the default interface used as the default route when
there is no default router.
.It Fl i
.Ar interface
view ND information for specified interface.
.It Fl l
Do not truncate numeric IPv6 address.
.It Fl n
Do not try to resolve numeric address to hostname.
.It Fl p
Show prefix list.
.It Fl P
Flush all the entries in the prefix list.
.It Fl r
Show default router list.
.It Fl R
Flush all the entries in the default router list.
.It Fl s
Register a NDP entry for a node.
.It Fl t
Print timestamp on each entries,
to make it possible to merge output with
.Xr tcpdump 1 .
Most useful when used with
.Fl A .
.El
.\"
.Sh RETURN VALUES
.Nm Ndp
will exit with 0 on success, and non-zero on errors.
.\"
.Sh SEE ALSO
.Xr arp 8
.\"
.Sh HISTORY
The
.Nm
command first appeared in WIDE Hydrangea IPv6 protocol stack kit.
.\"
.\" .Sh BUGS
.\" (to be written)
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