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+.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
+.\" All rights reserved.
+.\" 
+.\" Subject to the following obligations and disclaimer of warranty, use and
+.\" redistribution of this software, in source or object code forms, with or
+.\" without modifications are expressly permitted by Whistle Communications;
+.\" provided, however, that:
+.\" 1. Any and all reproductions of the source or object code must include the
+.\"    copyright notice above and the following disclaimer of warranties; and
+.\" 2. No rights are granted, in any manner or form, to use Whistle
+.\"    Communications, Inc. trademarks, including the mark "WHISTLE
+.\"    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+.\"    such appears in the above copyright notice or in the software.
+.\" 
+.\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+.\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+.\" IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+.\" OF SUCH DAMAGE.
+.\"
+.\"  $FreeBSD$
+.\" $Whistle: nghook.8,v 1.4 1999/01/20 03:19:45 archie Exp $
+.\"
+.Dd January 19, 1999
+.Dt NGHOOK 8
+.Os FreeBSD 3
+.Sh NAME
+.Nm nghook
+.Nd connect to a
+.Xr netgraph 8
+node
+.Sh SYNOPSIS
+.Nm
+.Op Fl a
+.Op Fl d
+.Ar path
+.Op Ar hookname
+.Sh DESCRIPTION
+.Nm
+creates a
+.Xr netgraph 8
+socket type node and connects it to hook
+.Ar hookname
+of the node found at
+.Ar path .
+If
+.Ar hookname
+is omitted, ``debug'' is assumed.
+.Pp
+At this point all data written to standard input is sent
+to the node and all data received from the node is relayed
+to standard output.
+.Pp
+The options are as follows:
+.Pp
+.Bl -tag -width indent
+.It Fl a
+Output each read packet in ASCII.
+.It Fl d
+Increase the debugging verbosity level.
+.El
+.Sh BUGS
+Although all input is read in unbuffered mode, 
+there's no way to control the packetization of the input.
+.Sh SEE ALSO
+.Xr netgraph 4 ,
+.Xr netgraph 3 ,
+.Xr ngctl 8 .
+.Sh AUTHOR
+Archie Cobbs <archie@whistle.com>
+.Sh HISTORY
+The
+.Em netgraph
+system was designed and first implemented at Whistle Communications, Inc.
+in a version FreeBSD 2.2 customized for the Whistle InterJet.