It's inevitable, and my WiFi monitoring is intended not to find out what sites he visits (I don't care that much about that) but set up to notify me if he's found a way to bypass my nightime blocking and is doing what he did before, and playing video games in the dead of night. And it's still not foolproof. He can theoretically hack a neighbor's wifi, although the weak signal isn't ideal for gaming.
I've educated him on the addictive nature of both games and apps, and he's more aware of the signs of addiction now, but that doesn't mean he won't "relapse" back to it.
I can't prove this without a scientific study to generate truly empirical data, but my theory as to why "boys are in crisis" and aren't graduating high school at same rates as girls involves video game addiction. A shockingly large percentage of my son's male friends get bad grades when they really shouldn't be. They live in stable, higher income homes, but have overly permissive/clueless parents. I'm a parent in a carpool, and I've been shocked at how many times a kid gets in my car and tells my son he was up all night playing games behind his parents back. In fact, this just happened 2 days ago. I picked up a kid, and he told my son he was up all night playing the newly released Overwatch 2 game. His grades suck. I can't help but think sleep deprivation is a huge part of this.
your technique is probably less insidious than mine (forcing packet loss)
but yeah, controlling your kid's gaming habit is hard. I went off the rails and it probably cost me about half a million dollars in opportunity cost. Those games should be illegal/controlled, they use literal gambling mechanisms to hook kids
