But why. Because that 3 extra MB on your hard disk occupied by an FTP client? Otherwise IPv6 will give us back NAT free world again. I am a big fan of backwar

But why. Because that 3 extra MB on your hard disk occupied by an FTP client? Otherwise IPv6 will give us back NAT free world again. I am a big fan of backward compatibility and we should always try to avoid reinventing the wheel. TCP/IP and email was also invented 40+ years ago.