Date: Mon, 23 Mar 2009 12:14:18 -0700 From: Sam Leffler <sam@freebsd.org> To: Bruce M Simpson <bms@incunabulum.net> Cc: freebsd-net@freebsd.org, Matthias Apitz <guru@unixarea.de> Subject: Re: kern/132722: [ath] Wifi ath0 associates fine with AP, but DHCP or IP does not work Message-ID: <49C7DF8A.8070408@freebsd.org> In-Reply-To: <49C7D89A.6070502@incunabulum.net> References: <20090317103650.GA6156@rebelion.Sisis.de> <49BF7DE4.4010804@incunabulum.net> <20090317104548.GB6182@rebelion.Sisis.de> <alpine.BSF.2.00.0903171148250.51892@thor.farley.org> <49BFF258.4020207@freebsd.org> <20090323182310.GA1825@rebelion.Sisis.de> <49C7D89A.6070502@incunabulum.net>
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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.
>
> We have yet to produce a tcpdump to catch it 'in the act' and
> observe the DLT_IEEE80211 traffic when it actually happens, I have
> only seen the symptoms. The AP does not show the EeePC units as being
> associated any more at this point, but ath0 still shows 'status:
> associated'. The AP involved is a Netgear WG602 V2, and is running the
> vendor's firmware.
>
> I'll try to get set up with 'tcpdump -y ieee802_11' from initial boot
> (including dhcp and anything we bump into).
There are many issues with the wireless code in RELENG_7. Now that the
hal is merged we can try to address them. Unfortunately the 7.2 release
has just begun so it's unclear what we can get in. I'm also limited in
what I'm willing to commit given that I do not run RELENG_7.
Sam
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