How to prevent unknown action category 3 or invalid frame from crashing hostap daemon

austin wonderly lacrosse1991
Mon Jul 25 19:09:46 PDT 2011

would the ht delayed block ack setting make any difference?

On Mon, Jul 25, 2011 at 5:02 PM, austin wonderly <lacrosse1991 at>wrote:

> it also sends large streams of data/ps-poll frame from not associated STA
> (mac address) when it goes down, and the mac address is usually either my
> laptop's or my phone's
> On Mon, Jul 25, 2011 at 4:40 PM, austin wonderly <lacrosse1991 at>wrote:
>> Hello! The server is running debian squeeze version 6.0.2, this is a bare
>> bones version too, ive only installed what i require, do not have any extra
>> programs etc. I am using the ath9k module, plus the driver is nl80211.
>> also the version of hostapd i am using is hostapd v0.7.3, which was
>> downloaded from the hostapd website and compiled on the server. and when the
>> server kicks/stops connecting the wireless clients i get a flood of sent
>> probe request for broadcast ssid's in the hostapd console from all mac
>> addresses
>> On Mon, Jul 25, 2011 at 4:10 PM, Jouni Malinen <j at> wrote:
>>> On Mon, Jul 25, 2011 at 02:38:30PM -0400, austin wonderly wrote:
>>> > hello! thanks for responding :) im currently in the process of trying
>>> to get
>>> > it to do the same thing again in order to pull up a log, but would the
>>> fact
>>> > that the mac address for the invalid frame is coming from a single
>>> client
>>> > make any difference, as i have a few devices on the network including a
>>> > android cellhphone and a mac that are producing the category 3
>>> messages, the
>>> > one that is producing them is windows 7 laptop. also for hostapd, i
>>> have a
>>> > dwa-552 wifi card running on a proliant dl380 server. i will also grab
>>> the
>>> > config file too incase there are any obvious errors.
>>> That debug entry from hostapd does not indicate that the Block Ack
>>> Action frame would be invalid; it just says that hostapd does not
>>> recognize the frame (and it should not since it does not process that
>>> frame). However, that frame should not really be delivered to hostapd in
>>> the first place..
>>> Which driver and/or Linux kernel version are you using? Which version of
>>> hostapd are you using?
>>> --
>>> Jouni Malinen                                            PGP id EFC895FA
>>> _______________________________________________
>>> HostAP mailing list
>>> HostAP at
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