ARP Tools is collection of libnet and libpcap based ARP utilities. It currently contains ARP Discover (arpdiscover), an Ethernet scanner based on ARP protocol; ARP Flood (arpflood), an ARP request flooder; and ARP Poison (arppoison), for poisoning switches’ MAC address tables.
You can download it from the following link: https://packetstormsecurity.com/files/download/51939/arptools-1.0.2.tar.gz
Source: https://packetstormsecurity.com/files/51939/arptools-1.0.2.tar.gz.html