Re: [regression]AP with hostapd 0.7.3 can't receive packets beyond authentication (2.6.36, rt73usb)

[Lee <lee-in-berlin@web.de>]

On 22/10/10 01:47, Lee wrote:
> Hi everyone,
>
> I noticed a bug (details later) in Linus' git tree, which wasn't there in
> 2.6.35.7. So I went on to bisect the bug. 12 compiles and reboots later, I
> could narrow it down to this commit:
>
> # bad: [05318bc905467237d4aa68a701f6e92a2b332218] Merge branch 'master' of
> git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
>
> Unfortunately, I couldn't further bisect down wireless-next, because all three
> commits I picked were unworkable (bringing down an interface caused the kernel
> to oops, which made my test case impossible).
>
> The test case is as follows: I have eth0 and wlan0 (the interface to an
> rt37usb device) in a bridge lan0. I have a properly configured hostapd. When I
> try to connect with a client to my hostapd AP, I can successfully
> authenticate, but all further packets don't reach the interface of the AP.
>
> However, I can see broadcast packets *from* the AP on my client, but not the
> other way round (DHCP requests from client to AP). To make sure the bug was
> not specific to broadcast packets, I manually set an IP on my client and tried
> to ping the AP, but those packets didn't come through, either.
>
> Right now I'm a bit clueless on how to get to the root of this bug, so any
> help is appreciated.
>
> Regards,
> Lee

I checked vanilla 2.6.36, the bug is still there. Is this a known bug? Does 
anyone care to give me some hints? Are any details needed?