Parental control does not work
Setting up a parental control to block internet on some devices does not work. (no blacklist or whitelist)
For instance google, youtube, tp-link.com are accessible. Some random website do get blocked from time to time but it's a minority.
Workaround: I found out that disable ipv6 passthrough solved the issue, everything gets blocked.
Although it seems to now work for any site it does not necessarily display the tp link Parental Control warning page and sometimes will just pretend to load the page forever leaving a confusing blank screen...