Hole punching works fine for IPv4 as well outside of endpoint dependent NAT, which most ISPs don’t use because it visibly shows up to normies as a bad connectio

Hole punching works fine for IPv4 as well outside of endpoint dependent NAT, which most ISPs don’t use because it visibly shows up to normies as a bad connection in PlayStations/Xboxes. Once you have to hole punch, you’ve lost the thread of why people bother switching to IPv6.