problem in detecting interfaces

[gaddour olfa <olfagaddour () yahoo fr>]

Hello,
I ma working on ubuntu and I wanto use Wireshark to analyze packets of a 
wireless sensor networks composed of TelosB motes.
I attached a sniffer to the PC, and I opened wireshark 1.5 fom the tutorial 
in http://www.sics.se/contiki/wiki/index.php/Instant_Contiki_Install_Scripts.
The problem is that Wireshark cannot detect the interface that I should sniff 
packets from it which is the USB port attached to the telosb mote. attached a 
screenshot of the detected interfaces.
Please can anyone tell me how can I solve it?

Best Regards,

Olfa

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