Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+General Information
+-------------------
+
+Wireshark is a network traffic analyzer, or "sniffer", for Linux, macOS,
+\*BSD and other Unix and Unix-like operating systems and for Windows.
+It uses Qt, a graphical user interface library, and libpcap and npcap as
+packet capture and filtering libraries.
+
+The Wireshark distribution also comes with TShark, which is a
+line-oriented sniffer (similar to Sun's snoop or tcpdump) that uses the
+same dissection, capture-file reading and writing, and packet filtering
+code as Wireshark, and with editcap, which is a program to read capture
+files and write the packets from that capture file, possibly in a
+different capture file format, and with some packets possibly removed
+from the capture.
+
+The official home of Wireshark is https://www.wireshark.org.
+
+The latest distribution can be found in the subdirectory https://www.wireshark.org/download
+
+
+Installation
+------------
+
+The Wireshark project builds and tests regularly on the following platforms:
+
+  - Linux (Ubuntu)
+  - Microsoft Windows
+  - macOS / {Mac} OS X
+
+Official installation packages are available for Microsoft Windows and
+macOS.
+
+It is available as either a standard or add-on package for many popular
+operating systems and Linux distributions including Debian, Ubuntu, Fedora,
+CentOS, RHEL, Arch, Gentoo, openSUSE, FreeBSD, DragonFly BSD, NetBSD, and
+OpenBSD.
+
+Additionally it is available through many third-party packaging systems
+such as pkgsrc, OpenCSW, Homebrew, and MacPorts.
+
+It should run on other Unix-ish systems without too much trouble.
+
+In some cases the current version of Wireshark might not support your
+operating system. This is the case for Windows XP, which is supported by
+Wireshark 1.10 and earlier. In other cases the standard package for
+Wireshark might simply be old. This is the case for Solaris and HP-UX.
+
+Python 3 is needed to build Wireshark. AsciiDoctor is required to build
+the documentation, including the man pages. Perl and flex are required
+to generate some of the source code.
+
+You must therefore install Python 3, AsciiDoctor, and GNU "flex" (vanilla
+"lex" won't work) on systems that lack them. You might need to install
+Perl as well.
+
+Full installation instructions can be found in the INSTALL file and in the
+Developer's Guide at https://www.wireshark.org/docs/wsdg_html_chunked/
+
+See also the appropriate README._OS_ files for OS-specific installation
+instructions.
+
+Usage
+-----
+
+In order to capture packets from the network, you need to make the
+dumpcap program set-UID to root or you need to have access to the
+appropriate entry under `/dev` if your system is so inclined (BSD-derived
+systems, and systems such as Solaris and HP-UX that support DLPI,
+typically fall into this category).  Although it might be tempting to
+make the Wireshark and TShark executables setuid root, or to run them as
+root please don't.  The capture process has been isolated in dumpcap;
+this simple program is less likely to contain security holes and is thus
+safer to run as root.
+
+Please consult the man page for a description of each command-line
+option and interface feature.
+
+
+Multiple File Types
+-------------------
+
+Wireshark can read packets from a number of different file types.  See
+the Wireshark man page or the Wireshark User's Guide for a list of
+supported file formats.
+
+Wireshark can transparently read compressed versions of any of those files if
+the required compression library was available when Wireshark was compiled.
+Currently supported compression formats are:
+
+- GZIP
+- ZSTD
+- LZ4
+
+You can disable zlib support by running `cmake -DENABLE_ZLIB=OFF`.
+
+Although Wireshark can read AIX iptrace files, the documentation on
+AIX's iptrace packet-trace command is sparse.  The `iptrace` command
+starts a daemon which you must kill in order to stop the trace. Through
+experimentation it appears that sending a HUP signal to that iptrace
+daemon causes a graceful shutdown and a complete packet is written
+to the trace file. If a partial packet is saved at the end, Wireshark
+will complain when reading that file, but you will be able to read all
+other packets.  If this occurs, please let the Wireshark developers know
+at wireshark-dev@wireshark.org; be sure to send us a copy of that trace
+file if it's small and contains non-sensitive data.
+
+Support for Lucent/Ascend products is limited to the debug trace output
+generated by the MAX and Pipline series of products.  Wireshark can read
+the output of the `wandsession`, `wandisplay`, `wannext`, and `wdd`
+commands.
+
+Wireshark can also read dump trace output from the Toshiba "Compact Router"
+line of ISDN routers (TR-600 and TR-650). You can telnet to the router
+and start a dump session with `snoop dump`.
+
+CoSine L2 debug output can also be read by Wireshark. To get the L2
+debug output first enter the diags mode and then use
+`create-pkt-log-profile` and `apply-pkt-lozg-profile` commands under
+layer-2 category. For more detail how to use these commands, you
+should examine the help command by `layer-2 create ?` or `layer-2 apply ?`.
+
+To use the Lucent/Ascend, Toshiba and CoSine traces with Wireshark, you must
+capture the trace output to a file on disk.  The trace is happening inside
+the router and the router has no way of saving the trace to a file for you.
+An easy way of doing this under Unix is to run `telnet <ascend> | tee <outfile>`.
+Or, if your system has the "script" command installed, you can save
+a shell session, including telnet, to a file. For example to log to a file
+named tracefile.out:
+
+~~~
+$ script tracefile.out
+Script started on <date/time>
+$ telnet router
+..... do your trace, then exit from the router's telnet session.
+$ exit
+Script done on <date/time>
+~~~
+
+
+Name Resolution
+---------------
+
+Wireshark will attempt to use reverse name resolution capabilities
+when decoding IPv4 and IPv6 packets.
+
+If you want to turn off name resolution while using Wireshark, start
+Wireshark with the `-n` option to turn off all name resolution (including
+resolution of MAC addresses and TCP/UDP/SMTP port numbers to names) or
+with the `-N mt` option to turn off name resolution for all
+network-layer addresses (IPv4, IPv6, IPX).
+
+You can make that the default setting by opening the Preferences dialog
+using the Preferences item in the Edit menu, selecting "Name resolution",
+turning off the appropriate name resolution options, and clicking "OK".
+
+
+SNMP
+----
+
+Wireshark can do some basic decoding of SNMP packets; it can also use
+the libsmi library to do more sophisticated decoding by reading MIB
+files and using the information in those files to display OIDs and
+variable binding values in a friendlier fashion.  CMake  will automatically
+determine whether you have the libsmi library on your system.  If you
+have the libsmi library but _do not_ want Wireshark to use it, you can run
+cmake with the `-DENABLE_SMI=OFF` option.
+
+How to Report a Bug
+-------------------
+
+Wireshark is under constant development, so it is possible that you will
+encounter a bug while using it. Please report bugs at https://gitlab.com/wireshark/wireshark/-/issues.
+Be sure you enter into the bug:
+
+1. The complete build information from the "About Wireshark"
+   item in the Help menu or the output of `wireshark -v` for
+   Wireshark bugs and the output of `tshark -v` for TShark bugs;
+
+2. If the bug happened on Linux, the Linux distribution you were
+   using, and the version of that distribution;
+
+3. The command you used to invoke Wireshark, if you ran
+   Wireshark from the command line, or TShark, if you ran
+   TShark, and the sequence of operations you performed that
+   caused the bug to appear.
+
+If the bug is produced by a particular trace file, please be sure to
+attach to the bug a trace file along with your bug description.  If the
+trace file contains sensitive information (e.g., passwords), then please
+do not send it.
+
+If Wireshark died on you with a 'segmentation violation', 'bus error',
+'abort', or other error that produces a UNIX core dump file, you can
+help the developers a lot if you have a debugger installed.  A stack
+trace can be obtained by using your debugger ('gdb' in this example),
+the wireshark binary, and the resulting core file.  Here's an example of
+how to use the gdb command 'backtrace' to do so.
+
+~~~
+$ gdb wireshark core
+(gdb) backtrace
+..... prints the stack trace
+(gdb) quit
+$
+~~~
+
+The core dump file may be named "wireshark.core" rather than "core" on
+some platforms (e.g., BSD systems).  If you got a core dump with
+TShark rather than Wireshark, use "tshark" as the first argument to
+the debugger; the core dump may be named "tshark.core".
+
+License
+-------
+
+Wireshark is distributed under the GNU GPLv2. See the file COPYING for
+the full text of the license. When in doubt the full text is the legally
+binding part. These notes are just to make it easier for people that are not
+familiar with the GPLv2.
+
+There are no restrictions on its use. There are restrictions on its distribution
+in source or binary form.
+
+Most parts of Wireshark are covered by a "GPL version 2 or later" license.
+Some files are covered by different licenses that are compatible with
+the GPLv2.
+
+As a notable exception, some utilities distributed with the Wireshark source are
+covered by other licenses that are not themselves directly compatible with the
+GPLv2. This is OK, as only the tools themselves are licensed this way, the
+output of the tools is not considered a derived work, and so can be safely
+licensed for Wireshark's use. An incomplete selection of these tools includes:
+ - the pidl utility (tools/pidl) is licensed under the GPLv3+.
+
+Parts of Wireshark can be built and distributed as libraries. These
+parts are still covered by the GPL, and NOT by the Lesser General Public
+License or any other license.
+
+If you integrate all or part of Wireshark into your own application, then
+that application must be released under a license compatible with the GPL.
+
+
+Disclaimer
+----------
+
+There is no warranty, expressed or implied, associated with this product.
+Use at your own risk.
+
+
+Gerald Combs <gerald@wireshark.org>
+
+Gilbert Ramirez <gram@alumni.rice.edu>
+
+Guy Harris <gharris@sonic.net>