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.\"     $NetBSD: ndp.8,v 1.2 1999/07/06 13:20:04 itojun Exp $
.\"     KAME Id: ndp.8,v 1.1.2.8.2.7.4.1 1999/03/23 01:26:42 itojun Exp
.\"
.Dd May 17, 1998
.Dt NDP 8
.Os
.\"
.Sh NAME
.Nm ndp
.Nd control/diagnose  IPv6 neighbor discovery protocol 
.\"
.Sh SYNOPSIS
.Nm ndp
.Fl a
.Op Fl nt
.Nm ndp
.Fl A Ar wait
.Op Fl nt
.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 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
view ND information for specified interface.
.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)