CONTAP-448062: After a node reboot, cluster time-service is unable to reach external ntp servers
Issue
After an ONTAP node was rebooted for example using takeover/giveback, when it is booted back up, external ntp is not reachable.
::> cluster time-service ntp status show -node *
Node: node-42
Server                  Reachable  Selection State                Offset (ms)
----------------------- ---------  ------------------------------ ------------
10.31.33.7              false  Server Not Responding or Too           0.00
                                   Distant
10.31.3.37              false  Server Not Responding or Too           0.00
                                   Distant 
