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-.\"	$OpenBSD: 0.t,v 1.3 2003/06/02 23:30:11 millert Exp $
-.\"
-.\" Copyright (c) 1983, 1986, 1993
-.\"	The Regents of the University of California.  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 University 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 REGENTS 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 REGENTS 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.
-.\"
-.\"	@(#)0.t	8.1 (Berkeley) 6/10/93
-.\"
-.de IR
-\fI\\$1\fP\\$2
-..
-.if n .ND
-.TL
-Networking Implementation Notes
-.br
-4.4BSD Edition
-.AU
-Samuel J. Leffler, William N. Joy, Robert S. Fabry, and Michael J. Karels
-.AI
-Computer Systems Research Group
-Computer Science Division
-Department of Electrical Engineering and Computer Science
-University of California, Berkeley
-Berkeley, CA  94720
-.AB
-.FS
-* UNIX is a trademark of Bell Laboratories.
-.FE
-This report describes the internal structure of the
-networking facilities developed for the 4.4BSD version
-of the UNIX* operating system
-for the VAX\(dg.  These facilities
-.FS
-\(dg DEC, VAX, DECnet, and UNIBUS are trademarks of
-Digital Equipment Corporation.
-.FE
-are based on several central abstractions which
-structure the external (user) view of network communication
-as well as the internal (system) implementation.
-.PP
-The report documents the internal structure of the networking system.
-The ``Berkeley Software Architecture Manual, 4.4BSD Edition'' (PSD:5)
-provides a description of the user interface to the networking facilities.
-.sp
-.LP
-Revised June 10, 1993
-.AE
-.LP
-.\".de PT
-.\".lt \\n(LLu
-.\".pc %
-.\".nr PN \\n%
-.\".tl '\\*(LH'\\*(CH'\\*(RH'
-.\".lt \\n(.lu
-.\"..
-.\".ds RH Contents
-.OH 'Networking Implementation Notes''SMM:18-%'
-.EH 'SMM:18-%''Networking Implementation Notes'
-.bp
-.ce
-.B "TABLE OF CONTENTS"
-.LP
-.sp 1
-.nf
-.B "1.  Introduction"
-.LP
-.sp .5v
-.nf
-.B "2.  Overview"
-.LP
-.sp .5v
-.nf
-.B "3.  Goals
-.LP
-.sp .5v
-.nf
-.B "4.  Internal address representation"
-.LP
-.sp .5v
-.nf
-.B "5.  Memory management"
-.LP
-.sp .5v
-.nf
-.B "6.  Internal layering
-6.1.    Socket layer
-6.1.1.    Socket state
-6.1.2.    Socket data queues
-6.1.3.    Socket connection queuing
-6.2.    Protocol layer(s)
-6.3.    Network-interface layer
-6.3.1.    UNIBUS interfaces
-.LP
-.sp .5v
-.nf
-.B "7.  Socket/protocol interface"
-.LP
-.sp .5v
-.nf
-.B "8.  Protocol/protocol interface"
-8.1.     pr_output
-8.2.     pr_input
-8.3.     pr_ctlinput
-8.4.     pr_ctloutput
-.LP
-.sp .5v
-.nf
-.B "9.  Protocol/network-interface interface"
-9.1.     Packet transmission
-9.2.     Packet reception
-.LP
-.sp .5v
-.nf
-.B "10. Gateways and routing issues
-10.1.     Routing tables
-10.2.     Routing table interface
-10.3.     User level routing policies
-.LP
-.sp .5v
-.nf
-.B "11. Raw sockets"
-11.1.     Control blocks
-11.2.     Input processing
-11.3.     Output processing
-.LP
-.sp .5v
-.nf
-.B "12. Buffering and congestion control"
-12.1.     Memory management
-12.2.     Protocol buffering policies
-12.3.     Queue limiting
-12.4.     Packet forwarding
-.LP
-.sp .5v
-.nf
-.B "13. Out of band data"
-.LP
-.sp .5v
-.nf
-.B "14. Trailer protocols"
-.LP
-.sp .5v
-.nf
-.B Acknowledgements
-.LP
-.sp .5v
-.nf
-.B References
-.bp
-.de _d
-.if t .ta .6i 2.1i 2.6i
-.\" 2.94 went to 2.6, 3.64 to 3.30
-.if n .ta .84i 2.6i 3.30i
-..
-.de _f
-.if t .ta .5i 1.25i 2.5i
-.\" 3.5i went to 3.8i
-.if n .ta .7i 1.75i 3.8i
-..