Broadcast issue

[Helmut Schaa]

On Fri, Mar 9, 2012 at 10:53 AM, Jens Dackenberg <jens.devel at gmail.com> wrote:
> I?ve configured a computer with Ubuntu to act as an AP with hostapd. The AP
> is configured with a bridge br0. I?ve connected another computer via wifi to
> the AP.
>
> A textual representation of the setup:
>
>
>
> (computerA) ---- wifi ----? (computerB: AP + br0) === lan === (computerC)
>
>
>
> Now to my problem. When computerA sends out an ARP request it can be seen at
> computerC. But when computerC sends out an ARP request it cannot be seen at
> computerA. It seems that broadcast is only working in one direction. Does
> anybody have a clue why it behaves like this?
>
>
>
> Specs:
>
> D-Link dwl-g122 (rev. C1)? [Ralink rt73]

rt73 is not capable of doing proper broadcast delivery after
DTIM beacons. So, if your computer A is in PS mode it won't
receive broadcast frames at all. Not sure if this is what you're
seeing ...

Helmut