[theandrewbailey]

Both connections would use the same "kid unfriendly" internet. You could set DNS servers, but each client can use another DNS server. You'd need a completely separate network (and connection) in order for it to be foolproof.

[kreco]

The DNS was mostly an example, I'm very ignorant regarding the network stack, but I would naively believe that the administrator of the internet router would have the ability to filter a lot of content without the client to be able to bypass it.

Like at work there are some website I cannot visit, and I'm not sure I can change DNS to change that (but maybe I can, I've never tried).