/usr/ is in libavahi-gobject-dev 0.7-3.1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/avahi-gobject/
/usr/include/avahi-gobject/ga-client.h
/usr/include/avahi-gobject/ga-entry-group.h
/usr/include/avahi-gobject/ga-enums.h
/usr/include/avahi-gobject/ga-error.h
/usr/include/avahi-gobject/ga-record-browser.h
/usr/include/avahi-gobject/ga-service-browser.h
/usr/include/avahi-gobject/ga-service-resolver.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libavahi-gobject.a
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/avahi-gobject.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libavahi-gobject-dev/
/usr/share/doc/libavahi-gobject-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/Avahi-0.6.gir
/usr/share/gir-1.0/AvahiCore-0.6.gir
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/libavahi-gobject-dev
/usr/lib/x86_64-linux-gnu/libavahi-gobject.so
/usr/share/doc/libavahi-gobject-dev/NEWS.gz
/usr/share/doc/libavahi-gobject-dev/README
/usr/share/doc/libavahi-gobject-dev/changelog.Debian.gz