- - dhcp and ipv4ll should probably be skipped for "lo" devices, even
- if the user has a catchall .network file installed, that might
- theoretically match it.
- - we probably should introduce a new operational state that
- indicates that we are trying to acquire some configuration for a
- link but haven't acquired any yet. Just to inform the admin that
- networkd cares about an interface, but is still in progress..