net-analyzer/passivedns
A network sniffer for DNS server replies
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
json
Global: Enable JSON support
ssl
Global: Adds support for Secure Socket Layer connections
systemd
* This flag is undocumented *