I have tried following this guide (correcting IPs, of course):
https://wiki.mikrotik.com/wiki/Force_us ... DNS_server
But it doesn't seem to work, and the reason, I suspect, is that MK acts as a router, without NAT.
ISP <= CableModem/Router (NAT + DHCP Server) <= Mikrotik (RB, forwarding DHCP requests) <= WIFI clients
(there are other devices on the network, connected directly to the CableModem, that should be able to open connections to WIFi clients, hence NAT on RB is not an option)
I need to force all WIFI clients to use Mikrotik's DNS server (LAN devices are good as is).
Thank you in advance.