Wireshark-bugs: [Wireshark-bugs] [Bug 1166] Missing part of BACnet decoder (with solution)
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 18 Oct 2006 19:02:19 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1166





------- Comment #2 from mikeg@xxxxxxxx  2006-10-18 19:02 GMT -------
I think that hf_bacnet_snet may be the wrong variable there.  This encoding
comes after the dnet and snet indicated by the control octet.  After the octet
indicating the Network Message Type (x02 for I-Could-Be-Router-To-Network), the
next 2 octets contain the DNET, and the octet after the DNET contains the
Performance Index.  Wireshark skips the DNET and reads the next octet as the
Performance Index, which is incorrect.  What I was trying to suggest with the
code  sample is that Wireshark should read the DNET, using whichever variable
is appropriate, before reading the Performance Index.


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