D-Link Router User Manual page 30

Section 3 - Configuration
If you previously selected Dynamic IP Address (IPoEoA/MER(MAC Encapsulated
Routed) with DHCP), fill in the below options:
Once finished, click Next to continue.
NAT: Disabling this option will disable the NAT firewall function of
the DWR-961, exposing all connected devices directly to the
Internet. This is an advanced feature and not recommended for
normal use.
DNS Enabled: Enables DNS lookup.
DNS Override Check this box override the DNS provided by the DHCP lease.
Allowed:
Normally, connections using Dynamic IP/DHCP should not need
this.
DNS Server Fill in if provided by your ISP. If not, keep the default value
1/2
(optional).
MAC Address: The default MAC address is set to the WAN port's physical
interface MAC address on the router. It is not recommended that
you change the default MAC address unless required by your ISP.
You can use the Clone button to replace the WAN port's MAC
address with the MAC address of your PC.
D-Link DWR-961 User Manual 25