~$ dpkg -l | grep avahi
ii  libavahi-client3                 0.6.11-1                   Avahi client library
ii  libavahi-common-data             0.6.11-1                   Avahi common data files
ii  libavahi-common3                 0.6.11-1                   Avahi common library
ii  libavahi-compat-libdnssd1        0.6.11-1                   Avahi Apple Bonjour compatibility library
ii  libavahi-glib1                   0.6.11-1                   Avahi glib integration library
ii  libavahi-qt3-1                   0.6.11-1                   Avahi QT3 integration library