ath0 and reason 25

[Sam Leffler]

Kevin Downey wrote:
> I have a dlink card that uses the ath0 driver. a DLW520. And when a
> try to connect to an AP I get an error in dmesg "ath: association
> failed (reason 25)"  followed by the BSSID of the AP. Is there a list
> of "reasons" somewhere? I have tried on an open AP a closed AP with
> WEP w/o WEP and I always get the same error. The card sees the AP
> fine. kismet finds it no problem. Sometimes wicontrol -i ath0 -L will
> show the AP and sometimes not.
> I have tried looking around in /src/sys/dev/ath and /src/sys/net80211 for "
> reasons" but my understanding of C / BSD internals is not very deep.

You don't mention what OS version you're running.

trouble% grep STATUS /usr/include/net80211/ieee80211.h|grep 25
         IEEE80211_STATUS_SHORTSLOT_REQUIRED     = 25,

So the AP and station are not agreeing on how to configure the slot 
time.  This may have something to do with the 11g configuration of your 
AP--e.g. did you fix long or short slot time in the AP?  OTOH if you're 
running 5.x then there are some bugs in the 11g support that have been 
fixed in current and might cause this.

	Sam