ARP Poisoning attack script using Python and Scapy
Scapy Python 3
You need to enable IPv4 forwarding on your machine. For UNIX-like OSs simply run with root privileges:
sysctl -w net.ipv4.ip_forward=1
Run
python main.py [victim IP] [gateway IP] [net interface]
with root privileges. A ophidia.pcap file will be created with 200 captured packets. You can then use a tool like Wireshark to analyze such packets.