Wireshark-bugs: [Wireshark-bugs] [Bug 11458] New: Wireshark doesn't detect mismatched link-layer

Date: Fri, 21 Aug 2015 15:54:53 +0000
Bug ID 11458
Summary Wireshark doesn't detect mismatched link-layer protocol ID and IP version
Product Wireshark
Version Git
Hardware x86
OS All
Status UNCONFIRMED
Severity Normal
Priority Low
Component Dissection engine (libwireshark)
Assignee [email protected]
Reporter [email protected]

Created attachment 13809 [details]
IPv6 over EtherType 0x0800

Build Information:
Wireshark 1.99.9 (v1.99.9rc0-322-ga5fe54d from unknown)

Copyright 1998-2015 Gerald Combs <[email protected]> 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 GTK+ 3.16.6, with Cairo 1.14.2, with Pango 1.36.8, with
libpcap, with POSIX capabilities (Linux), with libnl 3, with libz 1.2.8, with
GLib 2.44.1, without SMI, without c-ares, without ADNS, with Lua 5.2, with
GnuTLS 3.4.3, with Gcrypt 1.6.3, with MIT Kerberos, with GeoIP, with PortAudio
V19-devel (built Jan 31 2014 21:19:35), without AirPcap.

Built using gcc 5.2.0.

--
For link-layers encapsulating IP that demultiplex between IPv4 and IPv6, e.g,
Ethernet II, Wireshark doesn't report to the user when the link-layer says it
has IPv4 but it is really encapsulating IPv6 (e.g, IPv6 over Ethertype 0x0800).

This should be an expert info warning IMO. See attached pcap.


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