[erdem@desktop ~]$ s 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
1215	dhcpcd


Interface	Chipset		Driver

wlan0		Ralink 2570 USB	rt2500usb - [phy2]
				(monitor mode enabled on mon0)

[erdem@desktop ~]$ s aireplay-ng -9 mon0
16:51:54  Trying broadcast probe requests...
16:51:56  No Answer...
16:51:56  Found 0 APs