详见以下描述： Description
The avahi-daemon Linux service runs on client machines to perform network-based Zeroconf service discovery. Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zeroconf Networking. User applications receive notice of discovered network services and resources using the Linux D-Bus message passing. The daemon coordinates application efforts in caching replies, helping minimize network traffic. Avahi provides a set of language bindings, including Python and Mono. Because of its modularized architecture, Avahi is already integrated in major desktop components like GNOME's Virtual File System or KDE's input/output architecture. Refer http://avahi.org/ for further specifications. The avahi RPM package provides the /usr/sbin/avahi-daemon daemon and its configuration files.