As it turns out, we have examples of internal functions called
type_name_get_private() in the wild (especially among older libraries),
so we need to use a name for the per-instance private data getter
function that hopefully won't conflict with anything.
Implement the g_network_monitor_can_reach_async() rather than falling
back to the default implementation, which calls the sync version (not
in a thread).
https://bugzilla.gnome.org/show_bug.cgi?id=694181
Enumerate the GSocketConnectable before checking for a default route.
For some connectable types this will involve a DNS lookup. This will
elminate false positives for hosts behind a VPN since DNS lookup will
fail if the VPN is not connected.
https://bugzilla.gnome.org/show_bug.cgi?id=694181
Add GNetworkMonitor and its associated extension point, provide a base
implementation that always claims the network is available, and a
netlink-based implementation built on top of that that actually tracks
the network state.
https://bugzilla.gnome.org/show_bug.cgi?id=620932
