1999-07-06 17:32:01 +04:00
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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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1999-09-03 08:34:34 +04:00
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.\" $NetBSD: mld6query.8,v 1.2 1999/09/03 04:34:34 itojun Exp $
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.\" KAME Id: mld6query.8,v 1.3 1999/08/20 10:00:06 itojun Exp
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1999-07-06 17:32:01 +04:00
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.\"
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.Dd May 17, 1998
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.Dt MLD6QUERY 8
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.Os
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.\"
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.Sh NAME
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.Nm mld6query
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.Nd send multicast listener query
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.\"
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.Sh SYNOPSIS
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.Nm
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1999-09-03 08:34:34 +04:00
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.Op Fl dr
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1999-07-06 17:32:01 +04:00
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.Ar intface
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.Op Ar maddr
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.\"
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.Sh DESCRIPTION
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.Nm
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sends an IPv6 multicast listener discovery (MLD) query packet toward
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the specified multicast address,
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.Ar maddr ,
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toward interface
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.Ar intface .
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If you omit
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.Ar maddr ,
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1999-09-03 08:34:34 +04:00
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linklocal all nodes multicast address(ff02::1) is used.
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1999-07-06 17:32:01 +04:00
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.Pp
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After sending a query,
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.Nm
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waits for replies for at most 10 seconds.
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If a reply is returned,
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.Nm
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prints it with its type and then waits for another reply.
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.Pp
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This program is provided only for debugging.
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It is not necessary for normal use.
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1999-09-03 08:34:34 +04:00
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.Pp
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With
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.Fl d ,
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.Nm
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will transmit MLD done packet instead of MLD query packet.
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With
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.Fl r ,
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similarly, MLD report packet will be transmitted.
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.Fl dr
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options are for debugging purposes only.
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1999-07-06 17:32:01 +04:00
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.\"
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.Sh RETURN VALUES
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The program exits with 0 on success, non-zero on failures.
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.\"
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.\" .Sh SEE ALSO
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.\"
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.Sh HISTORY
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The
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.Nm
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command first appeared in WIDE/KAME IPv6 protocol stack kit.
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.Sh BUGS
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.Nm Mld6query
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does not take care of multicast addresses which have non link-local
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scope.
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