Feature Request - CAX80 Allow addresses or services to be permitted using the IPv6 Firewall

User Story:

I host local game and voice services on my network that allows me to communicate and play with friends. 

Today, the CAX80 only supports disabling the IPv6 firewall completely.  This exposes the entire network to the potential of attacks from the Internet.

Please add a simple allow list to allow incoming traffic to individual IPv6 addresses using the IPv6 firewall.