The only reason we're even still on IPv4 is because of NAT. End-to-end connectivity, public IPs everywhere, is how it should work. In the early days, this is ho

The only reason we're even still on IPv4 is because of NAT. End-to-end connectivity, public IPs everywhere, is how it should work. In the early days, this is how IPv4 worked. I remember having full, publicly routable IPs both at home, school, and work, no NAT. This doesn't mean you shouldn't use firewalls, though many in the early days didn't!