Wireshark-bugs: [Wireshark-bugs] [Bug 1807] New: BACnet UnconfirmedEventNotification inconsisten
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 28 Aug 2007 18:27:15 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1807

           Summary: BACnet UnconfirmedEventNotification inconsistent
                    decoding
           Product: Wireshark
           Version: SVN
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: Minor
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: steve@xxxxxxxxx


Build Information:
wireshark 0.99.7 (SVN Rev 22559)

Copyright 1998-2007 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+ 2.10.6, with GLib 2.12.4, with libpcap 0.9.4, with libz
1.2.3, without libpcre, without Net-SNMP, without ADNS, without Lua, without
GnuTLS, without Gcrypt, without Kerberos, without PortAudio, without AirPcap.
NOTE: this build doesn't support the "matches" operator for Wireshark filter
syntax.

Running on Linux 2.6.17-11-generic, with libpcap version 0.9.4.

Built using gcc 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5).

--
Report by Wireshark user of BACnet decoding: Decoding problem in BACnet
UnconfirmedEventNotification request for command-failure. Notification
Parameters are not decoded correctly depending on the packets that precede it. 
When certain packets precede it, it is shown as Status_Flags, Status_Flags and
Status_Flags. When the packet is in isolation, it is shown as Abstract Type: 0,
status flags, Abstract Type: 1, which is correct but not very helpful. 
command-failure (context tag 3) should be shown as Command_Value, Status_Flags
and Feedback_Value.  Example captures will be attached.


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