Avahi common library Avahi is a fully LGPL framework for Multicast DNS Service Discovery. It allows programs to publish and discover services and hosts running on a local network with no specific configuration. For example you can plug into a network and instantly find printers to print to, files to look at and people to talk to. This package contains the Avahi common library, which is a set of common functions used by many of Avahis components and client applications.