Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 13148] New: Missing dissector for 802.11 tag "20/40 BSS Coexistence (72)"

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Bug ID	13148
Summary	Missing dissector for 802.11 tag "20/40 BSS Coexistence (72)"
Product	Wireshark
Version	2.2.1
Hardware	x86
OS	Windows 10
Status	UNCONFIRMED
Severity	Enhancement
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	mail@scozzaro.net

Created attachment 15072 [details]
This is a sample Beacon frame containing the undecoded tag "20/40 BSS
Coexistence (72)"

Build Information:
Compiled (64-bit) with Qt 5.6.1, with WinPcap (4_1_3), with GLib 2.42.0, with
zlib 1.2.8, with SMI 0.4.8, with c-ares 1.12.0, with Lua 5.2.4, with GnuTLS
3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with QtMultimedia,
with AirPcap.

Running on 64-bit Windows 10, build 10586, with locale Italian_Italy.1252, 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 3.2.15, with Gcrypt 1.6.2, with
AirPcap 4.1.3 build 3348.
       Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz (with SSE4.2), with 4011MB of
physical memory.


Built using Microsoft Visual C++ 12.0 build 40629
--
Dissector for 802.11 IE Tag (20/40 BSS Coexistence) is not (yet) implemented.
Is there any chance that it will soon be? You can find it here:

IEEE 802.11 wireless LAN management frame
    Fixed parameters (2 bytes)
    Tagged parameters (3980 bytes)
        [...]
        Tag: 20/40 BSS Coexistence: Undecoded
            Tag Number: 20/40 BSS Coexistence (72)


I am attaching a sample packet, I found that this field is often found in
Beacon frames.

Thanks.

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