Issue has been resolved, a friend of mine looked over the settings and found that had missed 1 configuration in pfSense, after correcting the configuration the all systems are able to ping each other successfully.

.:Hi, Hoping someone can help me out. I have recently aquired a Rasberry Pi4, and I am enjoying it. recently I have found an odd issue with it. I am running a Windows domain at home, and have IPv6 enabled, and addresses being issued by DHCP. All my windows systems are able to ping each other using t...