For some reason, I can't turn the built-in Wi-Fi adapter on the new Raspberry Pi 3 into monitor mode like I used to do on other platforms.
First I kill the processes that interfere with
sudo airmon-ng check kill:
Found 4 processes that could cause trouble.
If airodump-ng, aireplay-ng or airtun-ng stops working after
a short period of time, you may want to kill (some of) them!
Process with PID 411 (wpa_supplicant) is running on interface wlan0
Killing all those processes...
Then I try to enable monitor mode with
sudo airmon-ng start wlan0:
Interface Chipset Driver
wlan0 Unknown brcmfmac_sdio - [phy0]mon0: ERROR while getting interface flags: No such device
(monitor mode enabled on mon0)
The output says it's enabled, but I can't use
How can I fix this and turn the adapter into monitor mode?