-int sd_network_get_ntp(char ***addr);
-
-/* Get state from ifindex.
- * Possible states: failed, configuring, configured, unmanaged
+int sd_network_get_ntp(char ***ntp);
+
+/* Get the search/routing domains for all links. */
+int sd_network_get_domains(char ***domains);
+
+/* Get setup state from ifindex.
+ * Possible states:
+ * pending: udev is still processing the link, we don't yet know if we will manage it
+ * failed: networkd failed to manage the link
+ * configuring: in the process of retrieving configuration or configuring the link
+ * configured: link configured successfully
+ * unmanaged: networkd is not handling the link
+ * linger: the link is gone, but has not yet been dropped by networkd