Passive Scanning not supported?

Hi all,
I try to do passive scanning with ipw2200-1.1.3, however, it looks like it 
doesn't work. I wrote a small program using the Wireless Tools version 
29-pre10 (beta). I set the scan_type in the iw_scan_req 
struct to IW_SCAN_TYPE_PASSIVE and link this struct to the iwreq struct. The 
iwreq struct is then used by the iw_set_ext function. However, if I invoke the 
passive scanning program I see a Probe Request packet on the channel from the 
machine that is supposed to do a passive scan.

I think the reason for this is that in the ipw_wx_set_scan function there is 
no distiction between active and passive scanning because 
ipw_request_direct_scan is invoked. Ipw_wx_set_scan is more or less directly 
called by the iw_set_ext function.

If you agree that this is a bug I will work on a solution. Otherwise I would 
be happy to hear how to set up passive scanning. ;-)

Greetings,
Thomas

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