ath0 going haywire

[Gunther Mayer]

Ghirai wrote:
> Hello Gunther,
>
> Monday, May 28, 2007, 2:45:07 AM, you wrote:
>
>   
>> Hi there,
>>     
>
>   
>> My ath0 wireless interface is going crazy lately. In my logs the kernel
>> keeps telling me
>>     
>
>   
>> May 28 01:26:28 greg ath0: link state changed to UP
>> May 28 01:26:28 greg ath0: link state changed to UP
>> May 28 01:26:28 greg ath0: link state changed to DOWN
>> May 28 01:26:28 greg ath0: link state changed to DOWN
>>     
>
>   
>> while the wireless connection becomes completely useless. The first time
>> this happened was 5 days ago when I got these messages every couple of
>> minutes. Today it happened again but much worse than before: First 4 
>> such messages every 3 seconds, then later 15/sec!!! This kept going for
>> almost 2 hours while I tried to debug things over the wired interface,
>> but I had no luck until miraculously it stopped its madness and came 
>> back to normal 15 min ago. No other hints in /var/log/messages...
>>     
>
>   
>> This this a sign of failing hardware? Or some other obscure bug in the
>> ath driver?
>>     
>
>   
>> My signal is pretty solid at 25-30 S:N btw so it can't be that...
>>     
>
>
>   
>> Gunther
>>     
>
>
> Maybe someone is performing a deauth attack on your AP,
> in hopes of getting your password?
>   
Very unlikely since my wireless is actually unencrypted. Unless it's a 
DoS of course. How could I trace that? Tcpdump on the wireless interface 
on the ap shows nothing unusual.

My laptop associates 100% with the same ap btw, also the card is 
completely useless now and I have to string a cable through my whole 
house...

Gunther