kern/132722: [ath] Wifi ath0 associates fine with AP, but DHCP or IP does not work

[John Hay]

On Mon, Mar 23, 2009 at 06:44:42PM +0000, Bruce M Simpson wrote:
> Matthias Apitz wrote:
> >I went today evening with my EeePC and CURRENT on USB key
> >to that Greek restaurant; DHCP does not get IP in CURRENT either;
> >this is somehow good news, isn't it :-)
> >  
> 
> This may be orthogonal, but:
>    A lab colleague and I have been seeing a sporadic problem where the 
> ath0 exhibits the symptoms of being disassociated from its AP. We are 
> running RELENG_7 on the EeePC 701 since the open source HAL merge.
>    In the behaviour we're seeing, we don't see any problem with the 
> initial dhclient run, the ath0 just seems to get disassociated within 
> 5-10 minutes of associating.
> 
> If we leave 'ping <ap-ip-address>' running in the background, we don't 
> see this problem.
> 

I found doing a -bgscan before it happens, make it not happen. I now
have -bgscan in my rc.conf.

John
-- 
John Hay -- John.Hay at meraka.csir.co.za / jhay at FreeBSD.org