This unlikely scenario is in fact true on my campus where I'm an admin. In fact, we are dissuaded from even NAT'ing because it complicates central auditing and

This unlikely scenario is in fact true on my campus where I'm an admin. In fact, we are dissuaded from even NAT'ing because it complicates central auditing and internal charge backs. Every single wired host (including printers) has Class B public IP address.