D7 has no one to one NAT feature. Before you buy it, you didn't confirm it?

No, I thought with all it's features it, it would have the most basic feature of one to one nat. Or being able to assign the public IP address to a local device. Even my stock Telstra BigPond modem has this capability. So at present I'm now forced to use it for the ADSL router and I'm only using the D7 for wireless...

There's no firmware updates that would resolve the issue or provide the added functionality?

D7 Features: •SPI and NAT firewall protects end-user devices from potential attacks from the Internet
Yet I don't see any NAT settings...

D7 Specifications: Port Forwarding
Virtual server, Port Triggering, DMZ, ALG, UPnP

Advanced Functions
Parental Control
Network Address Translation (NAT);
Port Mapping (Grouping), Static Routing, RIP v1/v2 (optional);
DNS Relay, DDNS, IGMP V1/V2/V3

Cheers,
Shane

You can submit a suggestion here. http://www.tp-link.com/en/Support/contact/

Thanks Mavis. :)