/* Get operatinal state from ifindex.
* Possible states: unknown, dormant, carrier, degraded, routable
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
/* Get operatinal state from ifindex.
* Possible states: unknown, dormant, carrier, degraded, routable
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/