Wireshark-bugs: [Wireshark-bugs] [Bug 11205] IEEE 802.11 dissector: Add a option for disable FCS
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 22 May 2015 08:07:35 +0000

Comment # 10 on bug 11205 from 
(In reply to Alexis La Goutte from comment #9)
> FCS with zero is valid or invalid ?

An all-zero "FCS" would neither be a valid FCS nor an invalid FCS; it would not
be an FCS at all, it would be padding added to frames transmitted by the Aruba
hardware and also sent out as ERM packets.

If the "FCS" field were zero, we wouldn't check it, we'd just report it as
padding.

(If they use a radiotap header:

    http://www.radiotap.org

the "frame includes FCS" bit of the Flags field:

    http://www.radiotap.org/defined-fields/Flags

can be used to indicate whether there's an FCS or not.)

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