Angst is a simple active packet sniffer, based on libpcap and libnet. Dumps into a file the payload of all the TCP packets received on the specified ports. Also, it floods the local network with random MAC addresses (like macof v1.1 by Ian Vitek), causing switches to send packets to all ports. Only compiled and tested on OpenBSD.
You can download it from the following link: https://packetstormsecurity.com/files/download/23818/angst-0.2b.tar.gz
Source: https://packetstormsecurity.com/files/23818/angst-0.2b.tar.gz.html