Ethereal-users: Re: [Ethereal-users] Problem while trying to capture raw 802.11 packet

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From: Motonori Shindo <mshindo@xxxxxxxxxxx>
Date: Tue, 20 Apr 2004 15:42:09 +0900 (JST)
Anish

From: "Anish Chandran" <anish@xxxxxxxxxxxxxxxxxxxxx>
Subject: [Ethereal-users] Problem while trying to capture raw 802.11 packet 
Date: Mon, 19 Apr 2004 17:50:27 +0530 (IST)

> I was trying to capture raw data from 802.11 raw packets on Cisco Aironet
> card. i m working on linux 2.4.20. i did as said in the FAQ question
> number 5.36 ie
> 
> echo "Mode: rfmon">/proc/driver/aironet/ethN/Config
> 
> after this my network connectivity is lost, and when it is changed back to
> bss  i m getting connectivty back can any one explain why that is
> happening.

What you did was to put the Airnonet card into a special mode called
"monitor mode". While the card is in this mode, the card can not
function as the normal client card, and hence all connectivity will
get lost.  This is an expected behavior.

> And while trying to capture on wifi0 error message is coming
> saying that no such interface is available... I tried by installing new
> version of libpcap but no change can any tell me what is the problem.

I'm not sure about what's happnenin here.