aircrack-ng on raspberry pi os buster

This is instruction with Raspberry Pi Buster. It will have only one wired connection an one wireless adapter.

apt -y update && apt -y install aircrack-ng vim screen

Set up interface wlan0 to work in monitor mode:

airmon-ng start wlan0

This can print:

Found 5 processes that could cause trouble.
Kill them using 'airmon-ng check kill' before putting
the card in monitor mode, they will interfere by changing channels
and sometimes putting the interface back in managed mode

  PID Name
  241 avahi-daemon
  249 avahi-daemon
  259 wpa_supplicant
  314 wpa_supplicant
  386 dhcpcd

PHY	Interface	Driver		Chipset

phy0	wlan0		ath9k_htc	Qualcomm Atheros Communications AR9271 802.11n

		(mac80211 monitor mode vif enabled for [phy0]wlan0 on [phy0]wlan0mon)
		(mac80211 station mode vif disabled for [phy0]wlan0)

Remove wpa_supplicant:

systemctl disable --now wpa_supplicant

Disable avahi-daemon:

systemctl disable --now avahi-daemon