openvswitch and hostap?

Junguk Cho jmanbal
Wed Nov 19 09:42:50 PST 2014

Hi, I have same issue.

When I add wlanX to bridge in openvswitch, the bridge does not reply EAPOL
even though I set up rules between wlanX and br0 with in_port and out_port

I can only see EAPOL (Message 1 of 4 ) in bridge with tcpdump but it did
not reply.
So I assumed EAPOL authentication is related to wlanX.

Is it right? Just wondering why it did not reply to EAPOL message.

Would you please clarify "I'm using this one but did not *consider sending
it upstream* as it is quite a hack"?


2014-11-19 9:39 GMT-07:00 Helmut Schaa <helmut.schaa at>:

> On Sat, Nov 15, 2014 at 2:28 AM, James Harper <james at>
> wrote:
> > I just threw this patch together. It runs the 'ovs-vsctl port-to-br'
> command to determine the name of the bridge, falling back to the old bridge
> detection method if that fails.
> >
> > It could be further developed to also add and remove the interface etc,
> but that's not really the way openvswitch works - interfaces are sticky wrt
> bridge membership and you don't need to re-add them each boot etc.
> >
> > Another option would be to add a config parameter that says "don't do
> any bridge configuration".
> Main problem is that if the wlanX interface is bridged hostapd needs
> access for grabbing EAPOL frames off from the bridge device.
> So it needs to know the bridge interface.
> I'm using this one but did not consider sending it upstream as it is
> quite a hack:
> Helmut
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