Wireshark-bugs: [Wireshark-bugs] [Bug 2801] New: VLAN Tag Enabled NIC Packets not Captured by DU
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 13 Aug 2008 13:39:22 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2801

           Summary: VLAN Tag Enabled NIC Packets not Captured by DUMPCAP
           Product: Wireshark
           Version: unspecified
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Medium
         Component: Extras
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: jrp999@xxxxxxxxx


Build Information:
Version 1.0.0

Copyright 1998-2008 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+ 2.12.8, with GLib 2.14.6, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.5,
with ADNS, with Lua 5.1, with GnuTLS 1.6.1, with Gcrypt 1.2.3, with MIT
Kerberos, with PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, without
AirPcap.

Built using Microsoft Visual C++ 6.0 build 8804

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 am using DUMPCAP to create a "Ring Buffer" of 4000 capture files.
This works fine.

Dumpcap  -i 4 -f "udp port 500 or udp portrange 2000-6000" -b files:4000 -b
filesize:250000 -b duration:900 -w "w:\Captures\Files.cap"

I recently enabled the capturing of VLAN Tag Information as documented in
http://wiki.wireshark.org/CaptureSetup/VLAN

Wireshark correctly captures and displays the Packets with their VLAN .1q Tags.

The DUMPCAP capture files are now Empty.

If I turn off the capture of VLAN .1q Tags by the NIC card, DUMPCAP resumes
collecting packets albeit without the VLAN .1q Tags.

I am assuming this is a bug or am I doing something wrong?

A quick solution would be most appreciated.

Thanx,

John


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