Block only Internet traffice

I would like to see separate options for blocking local and Internet traffic in the firewall. For instance, I may have shared folders which I use locally, but do not wish to be accessible from the Internet or otherwise outside my local network. Or I may have a game which I play over the local network, but I don’t want it connecting to the Internet to check for updates.

It makes it hard to differentiate these traffic types with IPV6 unfortunately but I wish we could add this feature sometime.