Ethereal-users: Re: [Ethereal-users] Wireless capture not catching control frames

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Mon, 07 Feb 2005 11:04:28 -0800
Ionut Morar wrote:

The thing is, I am not capturing any control frames - only management and data. What am i doing wrong? Or is it pcap's fault or the driver's fault?

If the card is capable of being put into a mode where it supplies control frames to the host, it's the driver's fault - otherwise, it's the card's fault. I don't know which of those is the case; it might be that the Aironet card never supplies control frames to the host, even in monitor mode, or it might be that there's a mode bit on the card to cause it to do so but that the driver doesn't turn that mode bit on.

You'd have to ask the maintainers of the Aironet driver which of those is the case (based on what information they've been told - there might be a mode bit that Cisco hasn't documented that causes the card to supply control frames).