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+.\" l2ping.8
+.\" 
+.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
+.\" 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.
+.\" 
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: l2ping.8,v 1.4 2002/11/09 19:20:09 max Exp $
+.\" $FreeBSD$
+.Dd June 14, 2002
+.Dt L2PING 8
+.Os
+.Sh NAME
+.Nm l2ping
+.Nd send L2CAP ECHO_REQUEST to remote devices
+.Sh SYNOPSIS
+.Nm
+.Op Fl a Ar remote BD_ADDR
+.Op Fl S Ar source BD_ADDR
+.Op Fl c Ar count
+.Op Fl f
+.Op Fl i Ar delay
+.Op Fl s Ar size
+.Sh DESCRIPTION
+The
+.Nm
+uses L2CAP ECHO_REQUEST datagram to elicit a L2CAP ECHO_RESPONSE from a
+remote device.
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl a Ar remote BD_ADDR
+Address of remote device to ping. Example:
+.Fl a Ar 00:01:02:03:04:05 .
+.It Fl S Ar source BD_ADDR
+Send L2CAP ECHO_REQUEST from local device that has BD_ADDR. Example:
+.Fl S Ar 00:05:04:03:02:01 .
+.It Fl c Ar count
+Number of packets to send. If this option is not specified, 
+.Nm
+will operate until interrupted.
+.It Fl f
+.Dq Flood
+ping, i.e. no delay between packets.
+.It Fl i Ar wait
+Wait 
+.Em wait
+seconds between sending each packet. The default is to wait for one 
+second between each packet. This option is ignored if
+.Fl f 
+has been specified.
+.It Fl s Ar size
+Specify the number of payload bytes to be sent. The default is 64. The
+maximum size is 65531. Use this option with caution. Some implementations
+may not like large sizes and may hang or even crash.
+.El
+.Sh BUGS
+Could collect more statistic. Could check for duplicated, corrupted
+and lost packets.
+.Sh DIAGNOSTICS
+.Ex -std
+.Sh SEE ALSO
+.Xr netgraph 3 ,
+.Xr netgraph 4 ,
+.Xr ng_l2cap 4 ,
+.Xr l2control 8
+.Sh AUTHORS
+.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com