Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 13280] New: UDLD flags are at other end of octet.

[bugzilla-daemon@xxxxxxxxxxxxx]

Bug ID	13280
Summary	UDLD flags are at other end of octet.
Product	Wireshark
Version	2.2.2
Hardware	x86-64
OS	macOS 10.12
Status	IN_PROGRESS
Severity	Normal
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	jaap.keuter@xs4all.nl
CC	wfischer@avodaq.com

Created attachment 15158 [details]
Sample UDLD file from SharkFest Europe '16

Build Information:
Version 2.2.2 (v2.2.2-0-g775fb08)

Copyright 1998-2016 Gerald Combs <gerald@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 (64-bit) with Qt 5.3.2, with libpcap, without POSIX capabilities, with
GLib 2.36.0, with zlib 1.2.5, with SMI 0.4.8, with c-ares 1.12.0, with Lua
5.2.4, with GnuTLS 2.12.19, with Gcrypt 1.5.0, with MIT Kerberos, with GeoIP,
with QtMultimedia, without AirPcap.

Running on Mac OS X 10.12.2, build 16C67 (Darwin 16.3.0), with locale C, with
libpcap version 1.7.4 - Apple version 67, with GnuTLS 2.12.19, with Gcrypt
1.5.0, with zlib 1.2.8.
      Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz (with SSE4.2)

Built using llvm-gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build
2336.9.00).
--
Looking at udld.flags in the attached sample UDLD file from SharkFest Europe
shows that values 0x01 and 0x03 are seen in the capture file, while the
dissector (packet-idld.c) uses bitmasks 0x80 and 0x40 for udld.flags.rt
(Recommended timeout) and udld.flags.rsy (ReSynch). RFC 5171 packet format
definition confirms these bits are at the other end of the octet.

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