netsniff-ng 0.5.4.1-1 (amd64 binary) in ubuntu lucid

 netsniff-ng is a high performance Linux network sniffer
 for packet inspection. It can be used for protocol analysis
 and reverse engineering, network debugging, measurement of
 performance throughput or network statistics creation of
 incoming packets on central network nodes like routers
 or firewalls. It works similar to tcpdump, but a 'zero-copy'
 mechanism for network packets results in better performance
 than libpcap-based sniffers.