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https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5309

           Summary: dumpcap use 50% of CPU
           Product: Wireshark
           Version: 1.4.1
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Medium
         Component: Extras
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: dbreton@xxxxxxxxxxxxxxxxxxxx


Build Information:
Version 1.4.1 (SVN Rev 34476 from /trunk-1.4)
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I use a tool that pipe BACnet/MSTP data to wireshark. The tool is mstpcap. You
can get it here:

http://sourceforge.net/projects/bacnet/files/bacnet-tools/bacnet-tools-0.5.7/bacnet-tools-0.5.7.zip/download 

When I start wireshark using this tool (wireshark.exe -i \\.\pipe\wireshark
-k), dumpcap.exe use 50% of CPU. Previous version of wireshark

The issue is not present with old stable release version 1.2.12 (SVN Rev 34473)

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