@-Ed- Thanks, Yves. It's been some years since I've reviewed this subject. DNS over HTTPS, in particular, can make OpenDNS useless with clever teenagers. Can the TP-Link parental controls and...

@HelpFixDecoApp Thx. I'd be OK with adding another device to network but I'd rather it be TP-Link and works best with the existing mesh networking of the Deco devices. Perhaps another TP-Link router...

@HelpFixDecoApp No, that's not what I'm looking for. Plenty of routers allow you to set DNS servers but clients can override with their own DNS settings.

I am currently using three Deco X60 (v2) devices and I would like to enforce the use of OpenDNS servers for content blocking. I could do this with my old router and DD-WRT's "Force DNS redirection"...