libpcap: 802.11 MAC and LLC

[Thomas Rulmont <trulmont () ingegneria unime it>]

I'm working on a small sniffer for 802.11 monitoring. The problem is that I 
need to intercept all management and beacon frames that normally stop at MAC 
sublayer. I would like to know how I can catch this frames, with all the 
addresses (that can be up to 4). 
I'm using a linksys 802.11b card under Linux 2.4.20

Thanks

Thomas Rulmont
-----
à Messine (Italie), en qwerty, du 11/02 au 31/05

thomas () nexus-informatique com
trulmont () ingegneria unime it
trulmont () hotmail com
http://elendil.mine.nu/gallery/Messina
+32 486 863216
+39 347 9968809
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