Wireshark-bugs: [Wireshark-bugs] [Bug 11802] New: ISO Internet Protocol is parsed as IPv4
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 28 Nov 2015 16:57:15 +0000
Bug ID 11802
Summary ISO Internet Protocol is parsed as IPv4
Product Wireshark
Version 1.12.8
Hardware x86-64
OS Windows 7
Status UNCONFIRMED
Severity Normal
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter boaz.brickner@gmail.com 

Created attachment 14062 [details]
IPO Internet Protocol packet

Build Information:
Version 1.12.8 (v1.12.8-0-g5b6e543 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 (64-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,
without Kerberos, with GeoIP, with PortAudio V19-devel (built Oct 14 2015),
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), GnuTLS 3.2.15, Gcrypt 1.6.2, without AirPcap.
        Intel(R) Core(TM) i5-3550 CPU @ 3.30GHz, with 16345MB 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.
--
Discovered while working on Pcap.Net (http://pcapdot.net).

In the attached pcap file there's a single ISO Internet Protoocl over IPv6
packet.
Event though the IPv6 Authentication header says the next protocol is ISO
Internet Protocol, Wireshark parses the next layer as IPv4.

In addition, the first byte of this IPv4 layer should be 0xcc since it comes
after the IPv6 layer, but Wireshark starts parsing this layer in the next byte
- 0xe0.

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