Problem with WPA-PSK auth when bridging

Jouni Malinen jkmaline
Fri Jan 21 20:57:35 PST 2005

On Tue, Jan 18, 2005 at 06:32:54PM +0100, Sebastian Kaps wrote:

> I'm using Linux 2.6.10, two ethernet cards and one WLAN card
> (SMC2802Wv2, using ndiswrapper). The WLAN card was set up for WPA-PSK
> authentication which worked well recently.

> I now want to use the kernel's bridging functionality. There's no
> problem connecting the two eth* devices to form a bridge. But as soon as
> I configure the bridge to include the wlan device, WPA authentication
> doesn't work anymore (I could post the output of "wpa_supplicant -d"
> later, if it helps).

Please note that IEEE 802.11 protocol does not support layer 2 bridging
when in client (managed/infrastructure) mode, so "fixing" this
authentication case would not be very helpful. The problem with
authentication is caused by mismatches in interface name (packet socket
expact the bridge interface whereas the driver configuration needs the
wlan interface).

Jouni Malinen                                            PGP id EFC895FA

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