Wireshark-bugs: [Wireshark-bugs] [Bug 5515] New: The MAC of a switch which appears in captures d
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 22 Dec 2010 07:12:46 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5515

           Summary: The MAC of a switch which appears in captures doesn't
                    match with the real one.
           Product: Wireshark
           Version: 1.4.2
          Platform: Other
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: leticia.roquette@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx


Build Information:
Version 1.4.2 (SVN Rev 34959 from /trunk-1.4)

Copyright 1998-2010 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 (32-bit) with GTK+ 2.16.6, with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Nov
18 2010), with AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.5, Gcrypt 1.4.5, 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.
--
I have 4 switches from telemecanique. Each one have his mac in a sticker, I
have verified that is true with the software Ethernet switch configurator. 
When I sniff with wireshark it doesn't show the correct mac, for example:

real MAC: 00 80 63 40 FF 4A
wireshark MAC: 00 80 63 40 FF 54

This happends with every switch. I have try with a PLC M340 and wireshark shors
the correct MAC. 

Can you help me?

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