Hyper-V: Add ICMP to Stateful ACL rules
Currently you cannot add stateful ACL rules (on a Hyper-V Virtual Switch) on the ICMP protocol.
This leaves you to either open ICMP to everyone or close ICMP to everyone including the VM itself.
Neither is secure or practical for such an important and basic functionality (ping).
So the request is simple: Create the functionality to create ICMP stateful rules.
Not a real firewall without this