ethereal-dev 0.99.0-1ubuntu1 (amd64 binary) in ubuntu dapper

 Ethereal is a network traffic analyzer, or "sniffer", for Unix and
 Unix-like operating systems. A sniffer is a tool used to capture
 packets off the wire. Ethereal decodes numerous protocols (too many
 to list).
 .
 This package provides idl2eth and other necessary files to develop
 new packet dissectors.