Comment 35 for bug 1100326

+++ This bug was initially created as a clone of Bug #485472 +++

Geoclue2 is a D-Bus service that provides geolocation, and uses MLS for network location:
https://developer.gnome.org/platform-overview/stable/tech-geoclue2.html.en

As D-Bus service, the provider can be queried at runtime, and if not present, fallback to the default provider.