net-analyzer/netsniff-ng
high performance network sniffer for packet inspection
USE Flags
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml
geoip
Global: Add geoip support for country and city lookup based on IPs
zlib
Global: Adds support for zlib (de)compression