The current default VyOS configuration uses an NTP configuration of something like this:
system { host-name vyos ntp { server "0.pool.ntp.org" server "1.pool.ntp.org" server "2.pool.ntp.org" } }
The NTP Pool encourages vendors to use their own vendor hostnames:
https://www.ntppool.org/en/vendors.html#vendor-zone
You must absolutely not use the default pool.ntp.org zone names as the default configuration in your application or appliance.
I propose that the default configuration is changed to:
system { host-name vyos ntp { server "0.vyos.pool.ntp.org" server "1.vyos.pool.ntp.org" server "2.vyos.pool.ntp.org" } }
I am happy to work on this and contribute a PR.