Wireshark-bugs: [Wireshark-bugs] [Bug 8404] Bug with TCP Acked unseen segment
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sun, 06 Sep 2015 16:30:51 +0000

changed bug 8404


What Removed Added
Status UNCONFIRMED CONFIRMED
Ever confirmed   1

Comment # 3 on bug 8404 from 
The attached capture files actually show two different bugs related to invalid
"TCP ACKec unseen segment" messages.

The first capture file (wireshark_error_unseen_segment.pcapng) shows a bug
wherein Wireshark does not properly handle a TCP segment containing
retransmitted data plus some new additional data. Specifically: the new data
following the retransmitted data in the segment is not accounted for and thus
when the ACK (for the retransmitted plus the new data) is received, Wireshark
thinks the ACK is for "unseen data".

(See bug #11506 for another capture file showing this problem).

The second capture file (error.pcap) is a bug related to Wieshark's handling of
"Zero Window Probes" and ACKs to same.

I'll open a new bug so this issue can be tracked separately.

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