No need to find the default route
No need to find the default route

The code is not just platform dependent but apparently it doesn't really
work either. Also do we really want to bind to default interface? Facts
to keep in mind:

1. If only loopback interface is up, there usually is no route set to it.
2. In case of multiple networks, the default route is usually set to the one
   connecting to internet rather than the local network (right?).

GNOME/gssdp,GNOME/gssdp,GNOME/gssdp