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.\" $KAME: ifmcstat.8,v 1.6 2002/10/31 04:23:43 suz Exp $
.\"
.\" Copyright (C) 1995, 1996, 1997, 1998, and 1999 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.
.\"
.\" $FreeBSD$
.\"
.Dd March 20, 2007
.Dt IFMCSTAT 8
.Os
.Sh NAME
.Nm ifmcstat
.Nd dump multicast group management statistics per interface
.Sh SYNOPSIS
.Nm
.Op Fl i Ar interface
.Op Fl f Ar address-family
.Op Fl M Ar core
.Op Fl N Ar system
.Nm
.Op Ar kernel
.\"
.Sh DESCRIPTION
The
.Nm
command dumps multicast group information from the kernel.
.Pp
The following options are supported:
.Bl -tag -width Fl
.It Fl i Ar interface
specifies the interface to be displayed.
.Pp
.It Fl f Ar address-family
specifies the address-family to be displayed; currently only
.Ar inet
and
.Ar inet6
are supported.
.It Fl M Ar core
extracts values associated with the name list from the specified core,
instead of the default
.Pa /dev/kmem .
.It Fl N Ar system
extracts the name list from the specified kernel instead of the
default, which is the kernel image the system has booted from.
.It Nm Ar system
This is the same as specifying
.Nm
.Fl N Ar system .
This usage is deprecated; it is supported only for backwards compatibility.
.Sh BUGS
.Nm
needs superuser privilege.
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