@Motorolae7 It's also possible that your ISP doesn't provide a native IPv4 connection. For example in Germany cable providers often assign IPv6 in DS-Lite mode. So it's not possible to host any...

I also asked the support how to configure the IPv6 firewall and always the same answer. In my opinion there will never be IPv6 firewall config. I don't understand why TP-Link doesn't implement these...