/usr/lib/x86_64-linux-gnu/libavahi-gobject.so.0 is in libavahi-gobject0 0.7-3.1ubuntu1.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libavahi-gobject.so.0.0.5
/usr/lib/x86_64-linux-gnu/libavahi-gobject.so.0.0.5