Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 10443] New: 6LoWPAN context handling not working

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Bug ID	10443
Summary	6LoWPAN context handling not working
Product	Wireshark
Version	1.99.x (Experimental)
Hardware	x86
OS	Windows 7
Status	UNCONFIRMED
Severity	Major
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	kevin.bracey@arm.com

Created attachment 13033 [details]
Capture with context

Build Information:
Version 1.99.0 (v1.99.0-rc1-1594-g8ddeb60 from master)

Copyright 1998-2014 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 (32-bit) with GTK+ 2.24.23, with Cairo 1.10.2, with Pango 1.34.0, with
WinPcap (4_1_3), with libz 1.2.5, with GLib 2.38.0, with SMI 0.4.8, with c-ares
1.9.1, with Lua 5.2, with GnuTLS 3.1.22, with Gcrypt 1.6.0, with MIT Kerberos,
with GeoIP, with PortAudio V19-devel (built Aug 29 2014), with AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version
4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version 1.0 branch
1_0_rel0b (20091008), with GnuTLS 3.1.22, with Gcrypt 1.6.0, without AirPcap.
Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz (with SSE4.2), with 16068MB of
physical memory.


Built using Microsoft Visual C++ 12.0 build 30723

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 out the test build provided for bug 10426, and that version no
longer handles any 6LoWPAN contexts.

All packets I've inspected have their elided fields shown as zero bits.

In the attached trace, packet 21 is an ICMP RA providing the context options,
but packet 23 which uses the context is not decoded correctly, leading to an
incorrect source address and an ICMP checksum error.

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