Código:
warcry ~ # airmon-ng start wlan0
Found 1 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!
PID Name
1810 dhcpcd
Interface Chipset Driver
wlan0 Ralink RT2870/3070 rt2800usb - [phy0]
(monitor mode enabled on mon0)
warcry ~ # airodump-ng wlan0mon
Interface wlan0mon:
ioctl(SIOCGIFINDEX) failed: No such device
warcry ~ # airodump-ng mon0
CH 2 ][ Elapsed: 0 s ][ 2016-08-25 23:01
BSSID PWR Beacons #Data, #/s CH MB ENC CIPHER AUTH ESSID
si te das cuenta, mi versión de aircrack me monta el interface en el mon0 no en la wlan0mon.