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CHAPTER0
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1994-02-22
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648 lines
The KA9Q Internet Software Package
by
Bdale Garbee, N3EUA
Copyright 1989 by Bdale Garbee.
All Rights Reserved.
This Document may be reproduced in whole
or in part for any non-commercial purpose,
as long as credit is given the author.
.pa
Bdale' Preface to Original Document
As is so often the case, when it came down to the wire and something had
to be left in less than perfect condition... the documentation suffered.
This document is a major rewrite of the document included with 871225.0
release of the KA9Q package, but it is in the author's opinion very far
from perfect. I believe that the bulk of the material here is factually
correct, but the formatting is rough, and there are no doubt some juicy
tidbits missing that should have been included.
If you have comments or suggestions about the documentation, contact me
via email at bdale@col.hp.com on the Internet, ...!winfree!bdale via UUCP,
or as 76430,3323 in S9 of the Hamnet forum on Compuserve.
My profound thanks to the folks who contributed to this release.
Bdale Garbee, N3EUA -- April 22, 1989
Apr 1993 Revision
Joe Buswell, K5JB, 44.78.0 2
Editor's note: I must express my appreciation to Bdale for the work he put
into this document. I certainly would have been unable to understand, and
be unable to manipulate the program suite as well as I have, without this
information. I have been supplying beginners in my area with a collection
of files from other sources (and notes of things I discovered) to supple-
ment this tome, and my collection was getting so large I felt that doing
some editing was in order to simplify other's search for information. I
left Chapter 1 pretty much alone, but reorganized most of the rest to
incorporate things that have come to pass since this was originally writ-
ten. My interest in NET has been primarily to suit myself. If someone
else finds use for the thing I am happy to share my work.
Joe Buswell, K5JB, 44.78.0.2
3312 N. Idylwild Dr.
Midwest City OK 73110-1643
.pa
Initial Revision notes -- July 1991
Chapter 1 was virtually unchanged.
Chapter 2 was changed to add some of the information from the TAPR "Plug-
'N'Play disk and to refer to the sample files that were added to the kit.
Some changes were made to correct a few errors in file paths for the MS-
DOS computer, add information for tidying file placement, add information
on new functions, and include information on starting the Unix version.
Chapter 3 Was edited to add a few more examples of test driving net.
Chapter 4 was slightly edited to add more Unix information and describe
environmental variable information.
Chapter 5, which was originally for advanced topics, and was empty, is now
used to explain NET/ROM, Finger, Mulport, Mbox, and a stray Datagram/VC
explanation from the commands chapter. It also discusses AX.25 Segmentat-
ion and the relationships between paclen, tcp mss, interface mtu, etc.
Chapter 6 was edited to add almost all available commands, particularly
for NET/ROM Finger and Mbox.
Chapter 7 was originally appendices. It was split up and now contains the
net program's internal workings -- information for programmers.
Chapter 8 Now contains the FTP Software information that was in Chapter 7.
Sept 1991
Performed general housekeeping to correct errors. Added information on
the Kantronics KPC-4/KAM dual port driver that is available. Added shl
information for Unix version operating in background. Added notes where
appropriate regarding ability to run net or bm from any drive or directory
on a computer. Indicated where options.h contains commonly changed
compiler directives that were originally in config.h.
March - November 1992
Added ROSE information in Chapters 5 and 6. Added ax25 mboxcall command
information. Revised Virtual Circuit support (for ROSE) and made some
changes to make NET and BM compile and work under Coherent 386. Added a
few commands, fixed an error in the shell (!) command. Revised the help
command to permit reading any file with a .hlp extension. Default help
files were renamed to net.hlp and helpbox.hlp. Added an optional ax25
heard command. Uploaded Unix and Coherent files to UCSD. Reworked latter
files to free up processor time when running NET.
April 1993
Made several minor housekeeping changes relating to AX.25 queuing and
memory management. Completed the Unix telunix code. Caused incoming
telnet, AX.25 and NET/ROM terminal sessions to automatically activate.
Added a send message command to communicate with mailbox users.
July-December 1993
Helped Bob Brose, N0QBJ, add OS9/OSK portability to the files. Added NOS
type AX.25 segmentation, smoothed out the AX.25 LAPB process to eliminate
unnecessary frames by making T2 really work, corrected an error in MS-DOS
clock handling at midnight, corrected a couple of errors related to telnet
uploading and absent smtp directories. Enabled ability to do AX.25 V1
protocol. Replaced earlier "ROSE trap" with a simpler method of handling
spurious I frames. Wrote some advice in Chapter 5 for NOS users who can't
figure out how to use ROSE. Incorporated in MS-DOS the Cute incoming
telnet session video available in the Unix version, while extending it to
the AX.25 and Netrom sessions.
I made a special effort to modernize NET's look and simplify its
operation, for example: Made several cosmetic changes to screen reports
and simplified some commands, specifically those that required typing
computer addresses, ugh!. Made the trace command a little simpler and
maybe more useful by adding an "info only" switch to it. Added message of
the day capability to telnet and mailbox chat sessions. Added file system
checking, which reports information on incorrect setup, and even stops NET
if critical errors detected. Made as many defaults as possible match
typical amateur radio requirements so NET can be started in a fully
functional state with only four configuration commands and six start
commands in autoexec.net. (It only needs to know the AX.25 call sign, the
IP address, the host name, and have the serial port attached.) Some
command changes that were made to improve consistency (e.g. yes|nos were
changed to on|offs) and might affect previous autoexec.nets. Netrom
verbose is no longer included unless you compile a custom NET for a switch
application. See Chapter 6 for current command syntax.
In the Unix version, created some client-server stubs that users can apply
to custom applications. Also made the shell command work by spawning a
child process for it while NET continues to run in the background. I may
make some stub processes for the MS-DOS version in a future version.
Reduced NET's executable size (MS-DOS) between k29 and k34 by 6200 bytes.
Did some general cleanup work on BM while modifying it to compensate for
flawed headers created by some other (un-named) mailers.
.pa
This Documentation
In the interest of portability, (and to save file space) this is supplied
as a set of nine ASCII text files with no formatting information except
some explicit page breaks (.pa in the left margin) where there would
otherwise be an ungraceful break in a table, etc. All text is flush left
margin except certain indented and centered lines. Maximum line length is
76 characters, which includes spaces at end of lines.
A print formatting utility, pagenet.exe, is included if you want to use
it. Pagenet strips trailing line spaces but your word processor print
facility may not.) Rather than use form feeds, it adds lines to the top
and bottom of each page to make 66 lines per page. To obtain a formatted
print file, use any word processor, or use pagenet. Pagenet was written
assuming you would be using an 80 column printer, with 8 1/2 x 11 page
size, six lines per inch, and that you would start the printer with the
print head on a sheet perforation. (Tell your laser printer you are doing
all 66 lines.) Source code for pagenet.exe is probably included if you
want to do it differently.
To make a formatted file containing this preface, use the command:
pagenet < chapter0 >chapter0.prn
To print chapters, you can either keep track of accumulated page numbers
or page each chapter individually. To start the first printed page with
number n, use the switch -pn. I recommend using the second option. To
make a print file for Chapter 1 and number its first page 1-1, use the
command:
pagenet -c1 < chapter1 >chapter1.prn
To go directly to a printer, redirect output to the printer with the
command:
pagenet -c1 < chapter1 >prn
For a larger left margin that permits hole punching, add the switch
command, -mn to add n spaces. Maximum left margin should be no greater
than 5 spaces (-m5). For example, to print chapter 2, and include a 5
character left margin, and print to the printer, use:
pagenet -c2 -m5 < chapter2 >prn
If you interrupt a print and want to resume in the middle of a chapter,
say with page 10, you can add the -p10 switch anywhere before the first
redirection symbol. If you get caught in pagenet.exe by running it
without any redirected files, use a Ctrl-Z and RETURN (ENTER) to exit.
For the benefit of the forgetful: pagenet ? will refresh your memory.
For a quick start, I suggest you only print the preface (chapter0) and
Chapters 2 through 6. You can print the others later to read while
sitting around a cozy fireplace some winter evening.
If you are fortunate to have Wordstar, you might try using it to print
this thing. I print replacement pages by using .rm 74, .mt 1, .mb 4,
setting the printer to do letter gothic, and letting 'er rip.
Notes on Software Version
This NET is based on the kit that I got at Dayton in 1989. Initially, the
only thing I did it was fix bugs that crashed it and add some two-way
functionality to the AX.25 - NET/ROM Mailbox. I kept it small so it could
live on my MS-DOS computer along with CBBS and other things running under
DESQview, and run under Unix on my AT&T 3B2 without maintaining two sets
of files. Subsequently, I added things to suit my particular station,
like the DRSI PC*PA packet driver (backed out of NOS and made to work
correctly) and corrected non-functional things like the packet driver. I
added a simple method for getting on-line help without reaching for the
book. I prepared this documentation with the first TAPR distribution.
I understand that all current development work is being done on NOS, but
for my purposes, I was happier with a smaller and well behaved program
that would excel in its intended function (TCP/IP over amateur radio),
that would co-exist on the MS-DOS computer with other programs and run as
well on the Unix computer. NET makes a fine (relatively) little IP engine
on these machines and though not designed as a Unix application works very
well. A recent challange to make IP available to the G8BPQ scheme was met
very well with NET and I tested it on an XT with two other applications
running under Desqview. Once it was apparent that no one else cared what
I did with NET, I felt free to re-organize and simplify things whenever I
saw an advantage. There is now considerable internal difference between
current and original versions of NET, though the fundamental structure
remains unchanged. NET is perhaps 30k smaller than when I started and has
enormously increased in performance. I attribute this to my narrow design
requirements, and time to piddle with it.
I have recently (11/93) made the observation that while NOS is a BBS with
incidental TCP/IP, NET is still TCP/IP with an incidental mailbox, heh! I
strongly recommend NOS to those who suggest adding features NET that are
outside of my design goals.
I am very conservative about modifying code and its possible side effects
so I give each modification a reasonable test before letting the local
operators wring it out. Each change, however minor, bumps the sub version
number (e.g. from j67 to j68) so I can diagnose problems possibly caused
by changes. Within each version there are compile time options that net
reports on the startup screen. Current net version when I release this
will be k. Current BM version is 3.3.1m. On MS-DOS, I personally run the
Multiport code with the extended KISS driver and an experimental COMBIOS
driver, making a total of four logical asy ports, two of them provided by
the extended KISS driver.
Source code for the Unix/Coherent/OS9-68K version is being maintained on
ucsd.edu in /hamradio/packet/tcpip/k5jb directory. Disks containing the
MS-DOS executables, some setup help files, and source code are maintained
in the Tucson Amateur Packet Radio (TAPR) library.
Latest notes will be contained in a file, readme.1st, included with the
MS-DOS executables. An LHA archive, etcfiles.lha, contains configuration
and other text files that work with net and bm.
Joe Buswell, K5JB, 44.78.0.2
Packet mail: K5JB@K5JB.OK
Paper mail: 3312 N. Idylwild, Midwest City OK 73110-1643
Internet address information provided on request.
Login on my personal computer can be arranged but it is much more cost
effective to send me a floppy and mailer than to download files long
distance.
.pa
Crude Index
Revised December 1993
(I quit trying to keep up with page numbers as I edited this thing, so
hopefully you can find your way from the paragraph numbering.)
1. TCP/IP -- History and Design Philosophy
1.1. An Overview of the TCP/IP Protocol Family
1.1.1. Acknowledgment
1.1.2. Introduction
1.1.3. What is TCP/IP? -- What's in it for me?
1.1.3.1. FTP - File Transfer Protocol
1.1.3.2. TELNET - Remote Login.
1.1.3.3. SMTP - Simple Mail Transfer Protocol
1.1.3.4. Other services - not implemented here
1.1.4. General description of the TCP/IP protocols
1.1.5. The IP level
1.1.6. The Ethernet level
1.1.7. Well-known sockets and the applications layer
1.1.8. An example application: SMTP
1.2. Protocols other than TCP: UDP and ICMP
1.3. Keeping track of names and information: the domain system
1.4. Routing
1.5. Details about Internet addresses: subnets and broadcasting
1.6. Datagram fragmentation and reassembly
1.7. Ethernet encapsulation: ARP
1.8. Getting more information
1.9. Overview of the KA9Q Internet Package
2. Installation
2.1. What an IP Address Is, and How to Get One
2.2. Configuring a TNC for TCP/IP Operation
2.2.1. TAPR TNC-1 and Clones
2.2.2. TAPR TNC-2 and Clones
2.2.3. AEA PK-232 and PK-87
2.2.4. DRSI PC Packet Adapter
2.2.5. Kantronics TNC's
2.2.6. Optional extended KISS driver
2.2.6.1. Extended KISS explanation
2.2.7. PacComm PC-100 Card, EAGLE, HAPN, etc.
2.3. IBM PC and Clones
2.3.1. Serial Data Cable
2.3.2. MS-DOS Quick Start -- File Structure
2.3.2.1. The AUTOEXEC.NET File
2.3.2.2. The FTPUSERS File
2.3.2.3. The HOSTS.NET File
2.3.3. Other files you can add later.
2.3.3.1. The alias and bm.rc files
2.3.3.2. The net.hlp file.
2.3.3.3. The helpbox.hlp file
2.3.3.4. Finger files
2.3.3.5. Mulport files - digilist and exlist
2.4. DESQview Setup
2.5. Unix
2.5.1. Telunix (remote login)
2.5.2. Telserv (general purpose server)
2.5.3. NET and Unix Multi-tasking
2.6. Macintosh
3. Taking NET for a Test Drive
3.1. Trying out the AX.25 Support
3.2. Trying out the NET/ROM Support
3.3. Trying out the Finger Command
3.4. The Telnet Command
3.5. The FTP Command
3.6. The Mail System
3.7. Tracing and Status Commands
3.8. Unix and shell layers
4. The Mail System
4.1. Installing and Using BM
4.1.1. Directory Structure
4.1.2. Configuration File
4.1.2.1. edit <path of your editor>
4.1.2.2. folder <directory name>
4.1.2.3. fullname <your full name>
4.1.2.4. host <your hostname>
4.1.2.5. maxlet <number of messages>
4.1.2.6. mbox <filename>
4.1.2.7. mqueue <path>
4.1.2.8. record <filename>
4.1.2.9. reply <return address>
4.1.2.10. screen [bios|direct]
4.1.2.11. smtp <path>
4.1.2.12. user <username>
4.1.2.13. wordwrap
4.1.2.14. zone <timezone>
4.1.2.15. Example BM.RC File
4.1.3. The alias File
4.1.4. \spool\mqueue\sequence.seq
4.2. Environment - Timezone
4.3. Commands
4.3.1. Main Menu Commands
4.3.1.1. b [<msg>]
4.3.1.2. d [<msglist>]
4.3.1.3. f [<msg>]
4.3.1.4. h
4.3.1.5. k <job id>
4.3.1.6. l
4.3.1.7. m [<userlist>]
4.3.1.8. n [<mailbox>]
4.3.1.9. N
4.3.1.10. p <msglist>
4.3.1.11. q
4.3.1.12. r [<msg>]
4.3.1.13. s [<msglist>] [<file>]
4.3.1.14. u <msglist>
4.3.1.15. w <msglist> <file>
4.3.1.16. x
4.3.1.17. .
4.3.1.18. ! <cmd>
4.3.1.19. $
4.3.1.20. ?
4.3.1.21. msg#
4.3.2. Text Input Commands
4.3.3. Command Line Options BM may be invoked as follows:
4.4. Technical Information
4.4.1. Outbound Mail Queue File Formats
4.4.2. Standards Documents
5. Other Things: NET/ROM, Finger, Mulport, Mbox, Datagrams, V Circuit
and AX.25 Segmentation
5.1. NET/ROM Services
5.1.1 Setting up NET/ROM
5.1.1.1 The NET/ROM Interface
5.1.1.2. Tracing on the NET/ROM Interface
5.1.1.3. Routing Broadcasts
5.1.1.4. The NET/ROM Routing Table
5.1.1.5. The Importance of the Routing Table
5.1.1.6. Interfacing with NET/ROMs Using Your Serial Port
5.1.1.7. The Time to Live Initializer
5.1.1.8. Using NET/ROM Support for IP
5.1.2. The NET/ROM Transport Layer
5.1.2.1. Connecting via NET/ROM Transport
5.1.2.2. Displaying the Status of NET/ROM Connections
5.1.2.3. NET/ROM Transport Parameters
5.1.3. Where to go for More Information
5.1.4. About the Code
5.2. The Finger Server (to put it on someone)
5.3. Mulport -- Run your own router!
5.3.1. Mulport planning and setup
5.3.2. Digilist file
5.3.3. Exlist file
5.3.4. Mulport Rules
5.4. AX.25 and NET/ROM Mailbox
5.4.1. A two way communication
5.4.2. Mbox File placement.
5.4.3. Mbox user commands
5.5. Virtual Circuits and Datagrams
5.6. ROSE Transport
5.7. AX.25 Segmentation
6. NET Command Reference
6.1. Startup
6.2. Console Mode
6.3. Commands - Syntax
6.3.1. <cr>
6.3.2. ?
6.3.3. !
6.3.4. #
6.3.5. arp
6.3.5.1. arp add <hostid> ether|ax25|netrom|vax25 <ether addr|callsign>
6.3.5.2. arp drop <hostid> ether|ax25|netrom|vax25
6.3.5.3. arp publish <hostid> ether|ax25|netrom|vax25 <ether addr|callsign>
6.3.6. attach <hwtype> <I/O addr> <vector> <mode> <label> <bufsize> <mtu>
<speed>"
6.3.6.1. Ethernet, G8BPQ and NET
6.3.6.2. axmotd [<message> | - ]
6.3.7. ax25
6.3.7.1. ax25 digipeat [on|off]
6.3.7.1.1 ax25 heard [on|off|clear] (optional)
6.3.7.2. ax25 maxframe [<val]>]
6.3.7.3. ax25 mycall [<call>]
6.3.7.4. ax25 mboxcall [<call>]
6.3.7.5. ax25 paclen [<val>]
6.3.7.6. ax25 pthresh [<val>]
6.3.7.7. ax25 reset <axcb#>
6.3.7.8. ax25 retry [<val>]
6.3.7.8.1 ax25 segment [on | off]
6.3.7.9. ax25 status [<axcb#>]
6.3.7.10. ax25 t1|t2|t3|t4 [<val>]
6.3.7.11. ax25 vcipcall [<call>]
6.3.7.12. ax25 window [<val>]
6.3.8. cd [<directory path>]
6.3.9. close [<session #>]
6.3.10. connect <interface> <callsign> [<digipeater> ... ]
6.3.11. dir [<dirname>] [/w]
6.3.12. disconnect [<session #>]
6.3.13. echo [accept|refuse]
6.3.14. eol [unix|standard]
6.3.15. escape <char>
6.3.16. etherstat
6.3.17. exit please
6.3.18. finger [<user|user@host|@host>]
6.3.19. ftp <hostid>
6.3.19.1. abort {ftp command}
6.3.19.2. cd <directory> {ftp command}
6.3.19.3. cwd [<directory>] {ftp command}
6.3.19.4. dele <remotefile> {ftp command}
6.3.19.5. dir <remote directory/file> [<local filename>] {ftp command}
6.3.19.6. get <remote_file> [<local_file>] {ftp command}
6.3.19.7. list - see dir {ftp command}
6.3.19.8. ls <remote directory/file> [<local filename>] {ftp command}
6.3.19.9. mkdir <remote_directory> {ftp command}
6.3.19.10. pass <password> {ftp command}
6.3.19.11. put <local_file> [<remote_file>] {ftp command}
6.3.19.12. pwd {ftp command}
6.3.19.13. quit {ftp command}
6.3.19.14. rmdir <remote_directory> {ftp command}
6.3.19.15. type [a|i|l<bytesize>] {ftp command}
6.3.19.16. user <username> {ftp command}
6.3.20. help [<subject>]
6.3.21. hostname [<name>]
6.3.22. log [stop|<file>]
6.3.23. ip
6.3.23.1. ip address [<hostid>]
6.3.23.2. ip status [clear]
6.3.23.3. ip ttl [<val>]
6.3.24. mailscan [<hostname>] [<pages to skip>]
6.3.25. mbox [ on | off | s [<message>] ]
6.3.25.1. motd [<message> | - ]
6.3.26. memstat
6.3.27. mode <interface> [vc|datagram]
6.3.28. mulport [on|off]
6.3.29. NET/ROM Commands
6.3.29.1. netrom acktime [<value>]
6.3.29.2. netrom bcnodes <iface name>
6.3.29.2.1. netrom bcstifle <iface name> on|off
6.3.29.3. netrom connect <alias|callsign>
6.3.29.4. netrom choketime [<value>]
6.3.29.5. netrom interface <iface name> <node alias> <qual>
6.3.29.6. netrom irtt [<value>]
6.3.29.7. netrom kick <nrcb#>
6.3.29.8. netrom nodefilter [<add|drop> <call> <iface>]
6.3.29.9. netrom nodefilter mode [none|accept|reject]
6.3.29.10. netrom nodetimer [<value>]
6.3.29.11. netrom obsotimer [<value>]
6.3.29.12. netrom qlimit [<value>]
6.3.29.13. netrom reset <nrcb#>
6.3.29.14. netrom retries [<value>]
6.3.29.11. netrom route
6.3.29.12. netrom route add <alias> <dest> <iface> <qual>
<neighbor> [<digi ... >]
6.3.29.13. netrom route drop <dest> <neighbor> <iface>
6.3.29.14. netrom route info <dest>
6.3.29.15. netrom status [<nrcb#>]
6.3.29.16. netrom ttl [<value>]
6.3.29.17. netrom verbose [<on|off>]
6.3.29.18. netrom window [<value>]
6.3.30. param <interface> [<param>] | mtu [<value>]
6.3.31. ping [ [<hostname> [<interval>] ] | clear ]
6.3.32. pwd [<dirname>]
6.3.33. record [<filename>|off]
6.3.34. reset [<session>]
6.3.35. rosebash (obsolete)
6.3.36. route [add|drop] (see below)
6.3.36.1. route add <dest addr>[/bits]|default <interface>
[<gateway hostid>|* [<metric>]]
6.3.36.2. route drop <dest hostid>
6.3.37. session [<session #>]
6.3.38. shell (also Unix shell layer manager, shl)
6.3.39. smtp
6.3.39.1. smtp gateway [<hostid>]
6.3.39.2. smtp kick
6.3.39.3. smtp maxclients [<val>]
6.3.39.4. smtp mode [queue|route]
6.3.39.5. smtp timer [<val>]
6.3.39.6. smtp trace [<value>]
6.3.40. sokname
6.3.41. start <server name>
6.3.42. stop <server name>
6.3.43. tcp
6.3.43.1. tcp irtt [<val>]
6.3.43.2. tcp kick <tcb#>
6.3.43.3. tcp mss [<size>]
6.3.43.4. tcp reset <tcb#>
6.3.43.5. tcp rtt <tcb#> <rttval>
6.3.43.6. tcp status [<tcb#>]
6.3.43.6.1. tcp timertype [linear | exponential] [<max backoff minutes>]
6.3.43.7. tcp window [<val>]
6.3.44. telnet <hostid>
6.3.45. trace [various - see below]
6.3.46. udp status
6.3.47. upload [<filename>]
6.3.48. vattrib bold|reverse|none|color <hex#>
6.4. AX.25 - Net/ROM Mailbox User Commands
6.4.1. Bye
6.4.2. Chat
6.4.3. Get <filename>
6.4.4. Help
6.4.4.1. Jheard (optional)
6.4.5. Kill [<message number>]
6.4.6. List
6.4.7. LL [<number>]
6.4.8. Ls [<filespec>]
6.4.9. Mail
6.4.10. Read [<message number>]
6.4.11. Send <tocall>[@<hostcall>] [<<fromcall>]
6.4.12. Users
6.4.13. Aborting downloads
7. The net program's internal workings
7.1. Technical Information for Client/Server Developers
7.2. Data Structures
7.3. Timer Services
7.4. Internet Type-of-Service
7.5. The Internet Protocol Implementation.
7.6. IP Gateway (Packet Router) Support
7.7. IP Interfaces
7.8. IP Host Support
7.9. The Transmission Control Protocol (TCP)
7.10. The User Datagram Protocol (UDP)
7.11. Mulport
7.12. Other Add-Ons - Editorial Comments
8. KISS and FTP Packet Driver
8.1. The KISS Host to TNC Protocol
8.1.1. Introduction
8.1.2. Asynchronous Frame Format
8.1.3. Transparency
8.1.4. Control of the Raw TNC
8.1.5. Persistence
8.1.6. The TNC-2 Implementation
8.1.7. The TNC-1 Implementation
8.1.8. The VADCG/ASHBY Implementation
8.1.9. The AEA Implemenation
8.1.10. The Kantronics Implemenation
8.2. The FTP, Inc., Packet Driver Specification
8.2.1. Introduction and Motivation
8.2.2. Identifying network interfaces
8.2.3. Initiating driver operations
8.2.4. Programming interface
8.2.4.1. Entry Conditions
8.2.4.2. Byte ordering
8.2.4.3. driver_info()
8.2.4.4. access_type()
8.2.4.5. release_type()
8.2.4.6. send_pkt()
8.2.4.7. terminate()
8.2.4.8. get_address()
8.2.4.9. reset_interface()
8.2.4.10. set_rcv_mode()
8.2.4.11. get_rcv_mode()
8.2.4.12. set_multicast_list()
8.2.4.13. get_multicast_list()
8.2.4.14. get_statistics()
8.2.4.15. set_address()
8.2.5. Interface classes and types
8.2.6. Function call numbers
8.2.7. Error codes
8.2.8. 802.3 vs. Blue Book Ethernet
