Description:

ipband is pcap based IP traffic monitor. It listens to a network
interface in promiscuous mode, tallies per-subnet traffic and
bandwidth usage and starts detailed logging if specified threshold for
the specific subnet is exceeded.

This utility could be handy in a limited bandwidth WAN environment
(frame relay, ISDN etc. circuits) to pinpoint offending traffic source
if certain links become saturated to the point where legitimate
packets start getting dropped.