Wireshark-bugs: [Wireshark-bugs] [Bug 4414] New: Enhancement in bgp dissector
Date: Wed, 20 Jan 2010 22:38:48 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4414

           Summary: Enhancement in bgp dissector
           Product: Wireshark
           Version: 1.2.2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: maximivanov@xxxxxxx


Build Information:
Version 1.2.2 (SVN Rev 29910)

Copyright 1998-2009 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GTK+ 2.16.2, with GLib 2.20.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.8.1, with Gcrypt 1.4.4, with MIT
Kerberos, with GeoIP, with PortAudio V19-devel (built Sep 14 2009), with
AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.1
beta5
(packet.dll version 4.1.0.1452), based on libpcap version 1.0.0, GnuTLS 2.8.1,
Gcrypt 1.4.4, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
BGP protocol dissector contain comments

/*
* RFC 2545 specifies that there may be more than one
* address in the MP_REACH_NLRI attribute in section
* 3, "Constructing the Next Hop field".
*
* Yes, RFC 2858 says you can't do that, and, yes, RFC
* 2858 obsoletes RFC 2283, which says you can do that,
* but that doesn't mean we shouldn't dissect packets
* that conform to RFC 2283 but not RFC 2858, as some
* device on the network might implement the 2283-style
* BGP extensions rather than RFC 2858-style extensions.
*/

This is true, see rfc4760 (chapter 11). It is possible to update code in next
releases of Wireshark?

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