i like this function too ;)

Disable hardware NAT ? why you need to do that, if not hardware NAT, but you want to disable the normal NAT, i think you will lose internet if you do that.

1. if there are many PPPOE connections , the ISP can see the MAC address of each connection, if all MAC addresses are router's WAN MAC, maybe the router has some problem. 2. when the router do PPPOE...

http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&p=162673#post162673

which model has this fucntion? is it an intelligent router, i prefer a router with android system

it doesn't support this function.