Wireshark-bugs: [Wireshark-bugs] [Bug 11624] New: TCP ACKed unseen segment
Date Index · Thread Index · Other Months · All Mailing Lists
Date Prev · Date Next · Thread Prev · Thread Next
From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Thu, 22 Oct 2015 19:22:52 +0000
Bug ID 11624
Summary TCP ACKed unseen segment
Product Wireshark
Version 1.12.6
Hardware x86
OS Windows 7
Status UNCONFIRMED
Severity Major
Priority Low
Component Build process
Assignee bugzilla-admin@wireshark.org
Reporter tferguson@amadeus.com 

Created attachment 13931 [details]
Wireshark capture

Build Information:
Version 1.12.6 (v1.12.6-0-gee1fce6 from master-1.12)

Copyright 1998-2015 Gerald Combs <gerald@wireshark.org> 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 (32-bit) with GTK+ 2.24.23, with Cairo 1.10.2, with Pango 1.34.0, with
GLib 2.38.0, with WinPcap (4_1_3), with libz 1.2.5, with SMI 0.4.8, with c-ares
1.9.1, with Lua 5.2, without Python, with GnuTLS 3.2.15, with Gcrypt 1.6.2,
with
MIT Kerberos, with GeoIP, with PortAudio V19-devel (built Jun 17 2015), with
AirPcap.

Running on Windows Server 2003 Service Pack 2, build 3790, with WinPcap version
4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version 1.0 branch
1_0_rel0b (20091008), GnuTLS 3.2.15, Gcrypt 1.6.2, without AirPcap., with
3839MB
of physical memory.


Built using Microsoft Visual C++ 10.0 build 40219

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.

--
Hello Wireshark,

I have read the other bugs related to "TCP ACKed unseen segment" and I still
think Wireshark v1.12.6 reports this incorrectly. Please note that v1.99.8
(legacy) also shows the same display.

Please see the attached capture. Packets 39-46 are ACKing for packet 47.
Shouldn't this be normal behavior to ack for the next expected packet with
data? Look at packets 69-76.  69-74 are ACKing for packet 76, but these are not
flagged as "TCP ACKed unseen segment".

I looked for a TCP preference to change the behavior but I could not find any.
Can you help please?

Thank you,
Tom Ferguson

You are receiving this mail because:
  • You are watching all bug changes.