Quoting Sam Leffler <sam_at_errno.com>: > The patch here: > > http://people.freebsd.org/~sam/monitor-20090518.patch > > has significant changes to monitor mode operation. Most importantly it > replaces DLT_IEEE802_11 support in net80211 by DLT_IEEE802_11_RADIO and > removes the latter from the underlying device. The upshot is that you > can no longer do: > > tcpdump -i ath0 > > instead you will now need a wlanX ifnet; e.g. > > ifconfig wlan create wlandev ath0 wlanmode monitor channel 6 up > tcpdump -i wlan0 -y IEEE802_11_RADIO > > This addresses the longstanding issue that applications like kismet > that want radiotap data needed to open two ifnets, one to receive data > and one to do channel changes. My main concern is whether losing > DLT_IEEE802_11 support will affect any apps. Those that depend on it > should be easy to change; you just request a different DLT and strip > the radiotap header from tap'd frames (or similar). > > In sweeping the drivers to do these changes I've made radiotap support > more consistent and improved some drivers. Drivers not tested so far: > malo, ipw, wpi, and upgt. I tested iwi and it appears broken in that > no frames are rx'd but I'm not sure I'll look at it before 8.0. > > I plan to commit these changes by the end of the week. > > Sam Thanks, this should improve operability of aircrack-ng, too. I will try this tomorrow.
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