Timed DNS queries, block DNS based on time

[yubiuser]

@Coro

Note that this is trivial with group management.

Good advice. For those for whom this is not trivial, see here

Activate group with cron

Hello, I'm looking for a way to activate a group from 9 a.m. to 6 p.m. and have it deactivated from 6:01 p.m. to 8:59 a.m. with school at home I want to block social media during school hours. Thank you in advance for your help.