ntpd disables "mode 7" queries by default due to security issues, consequently ntpdc doesn't work. ntpq still works because it uses mode 6 queries. (source: [[ https://unix.stackexchange.com/questions/353673/timed-out-nothing-received-on-ntpdc-loopinfo | stackexchange ]]). We can either switch the op mode scripts to ntpq or enable mode 7 queries, I think the former is preferred.
```
vyos@vyos$ show ntp info
localhost: timed out, nothing received
***Request timed out
localhost: timed out, nothing received
***Request timed out
```