From: Jouni Malinen (
Date: 2002-07-26 09:45:00 UTC

On Thu, Jul 04, 2002 at 04:49:33PM -0400, Jason Price wrote:

> having some major issues on my DWL-650 runing hostap_cs and nocat
> when i test the link on my Ipaq (lucent silver card) the sniffer shows the
> ap switching between the following mac address:
> 00:05:5D:F1:2F:7C and FF:FF:FF:FF:FF:FF also i am losing about 50% 75% of
> all my data.. any clues on what could be configed wrong ?
> loosing about 10 outta 15 packets, any help would be great. also when i run netstumbler on the Ap i only see it come up once every 1 - 2 min.

Is this problem still open? The AP address changing certainly looks odd.. I would capture a dump of frames with 802.11 headers and check whether the beacon frames or probe responses are really coming from address ff:ff:ff:ff:ff:ff at some point.

> cat 00\:02\:2d\:1e\:cd\:50
> STA=00:02:2d:1e:cd:50
> users=0
> aid=1
> flags=0x0007 AUTH ASSOC PS

Have you tested without using power saving in the station?

You didn't include information about the firmware version of D-Link DWL-650 card. If the station firmware is older than v0.8.2, you might try enabling a workaround for nullfunc frame ACKing. This is needed with Lucent cards to get the power saving mode working. The workaround can be enabled with 'prism2_param wlan0 ap_nullfunc_ack 1'.

Jouni Malinen                                            PGP id EFC895FA

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