Wireshark-bugs: [Wireshark-bugs] [Bug 8293] New: OSIT: Incorrect TP4 checksum calculation (ATN e

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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 02 Feb 2013 17:06:18 +0000
Bug ID 8293
Summary OSIT: Incorrect TP4 checksum calculation (ATN extended checksum) in case of multiple TPDU's per frame
Classification Unclassified
Product Wireshark
Version SVN
Hardware All
OS All
Status UNCONFIRMED
Severity Enhancement
Priority Low
Component Dissection engine (libwireshark)
Assignee [email protected]
Reporter [email protected] 

Created attachment 9925 [details]
Tracefile with multiple TPDU's (AK,DT) per frame #402 #423 etc.

Build Information:

--
It was found that the ositp disscetor is able to cope with the situation when
multiple transport TPDU's (i.e. AK followed by DT) are contained within one
NPDU.

The ATN extended checksum however is not correctly calculated in that case;
both checksums were displayed as incorrect although beeing ok.

The added pcap dump containes several example frames ( i.e. frame #402 #423)
which illustrate the problem

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