Comment 28 for bug 1723350

Argh! My fault, with the typo fixed, I see the following:

Jun 11 15:36:27 exp006 sssd[be[918]: Backend is offline
[...]
(Mon Jun 11 15:36:31 2018) [sssd] [message_type] (0x0200): netlink Message type: 24
(Mon Jun 11 15:36:31 2018) [sssd] [route_msg_debug_print] (0x1000): route idx 2 flags 0 family 2 addr correct_ip_address/32
(Mon Jun 11 15:36:31 2018) [sssd] [network_status_change_cb] (0x2000): A networking status change detected signaling providers to reset offline status
(Mon Jun 11 15:36:31 2018) [sssd] [sbus_add_timeout] (0x2000): 0x5616e2ab79f0
[...]
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [resolv_gethostbyname_step] (0x2000): Querying DNS
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [resolv_gethostbyname_dns_query] (0x0100): Trying to resolve A record of 'kdc1.OUR.INSTITUTION' in DNS
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [schedule_request_timeout] (0x2000): Scheduling a timeout of 6 seconds
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [schedule_timeout_watcher] (0x2000): Scheduling DNS timeout watcher
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [unschedule_timeout_watcher] (0x4000): Unscheduling DNS timeout watcher
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [request_watch_destructor] (0x0400): Deleting request watch
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [resolv_gethostbyname_done] (0x0040): querying hosts database failed [5]: Input/output error
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [fo_resolve_service_done] (0x0020): Failed to resolve server 'kdc1.OUR_INSTITUTION': Could not contact DNS servers
(Mon Jun 11 15:37:50 2018) [sssd[be[uni-bonn.de]]] [set_server_common_status] (0x0100): Marking server 'kdc1.OUR_INSTITUTION' as 'not working'

So it seems even though network runs fine, DNS fails.
dig kdc1.OUR_INSTITUTION A
works fine, though.