RouterOS requires NTP servers to be configured by IP address. Servers from a pool may appear and disappear, leaving broken NTP configuration.
This script allows to rotate IP addresses from a given pool.
Just install the script:
The configuration goes to
global-config-overlay, this is the parameter:
NtpPool: dns name of ntp server pool
Just run the script to update the NTP configuration with actual IP addresses from pool if required.
Alternatively a scheduler can be created:
/ system scheduler add interval=5d name=rotate-ntp on-event="/ system script run rotate-ntp;" start-time=startup;