https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2593
Summary: UDP checksum error
Product: Wireshark
Version: 1.0.0
Platform: PC
OS/Version: Linux
Status: NEW
Severity: Blocker
Priority: Medium
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: Scott.J.Wasinger2@xxxxxxxxxxxxx
Created an attachment (id=1859)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=1859)
Output from Wireshark (all fields expanded w/hex dump at the bottom
Build Information:
Version 1.0.0
Copyright 1998-2008 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+ 2.12.5, with GLib 2.14.6, with libpcap 0.9.7, with libz
1.2.3, without POSIX capabilities, with libpcre 7.3, without SMI, without ADNS,
without Lua, with GnuTLS 1.6.3, with Gcrypt 1.2.4, with MIT Kerberos, without
PortAudio, without AirPcap.
Running on Linux 2.6.24.4-64.fc8, with libpcap version 0.9.7.
Built using gcc 4.1.2 20070925 (Red Hat 4.1.2-33).
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
I'm trying to examine the UDP packets that I'm multicasting to (225.0.0.250
port 8123) and I keep getting messages that are flagged for
(udp.checksum_bad==1) error.
the app is telling me that my checksum is incorrect (0x4b35) and it should be
(0x975e)
the info block states that:
Bogus IP header length (0, must be at least 20)
I'm confused about why it is producing these errors. My code is setting up the
Multicast socket properly, but something is happening to my packets.
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