I installed this router some time ago as a replacement for my old provider router in order to be able to use VLAN's, network segmeting, etc.
I am using both IPv4 and IPv6 on my network and I have noticed that in the Gateway ACL on the Omada controller I cannot setup rules for IPv6??

The reason why is that I noticed after an external portscan that many if my v6 network-clients, including an internal file server (also with IPv6) with all the functionality (for cloud access, etc)... ports are all OPEN and EXPOSED to the internet! For all the PC's as well (for example, my Windows pc's as well). Ok I can close them at client-level, but it cripples functionality and it's not supposed to be open to the world wide web like this... 

I tried to create some new manual IPV6 ACL groups, but these don't appear on the Gateway ACL (router) rules I try to create. I can only set them on the Switch ACL (but this is pointless...). Now I am wondering: how can I close my inbound IPV6 traffic into the gateway (ER706W router) and leave v6 ports granulary open when it can't even be configured (not visible?)

Is ACL for IPv6 data even supported on that specific model I bought?

This would be a real shame...