Forge ARP replies to intercept packets.
Poison all hosts to intercept packets on [i]nterface for the host
sudo arpspoof -i wlan0 host_ip
Poison [t]arget to intercept packets on [i]nterface for the host
sudo arpspoof -i wlan0 -t target_ip host_ip
Poison both [t]arget and host to intercept packets on [i]nterface for the host
sudo arpspoof -i wlan0 -r -t target_ip host_ip