D-Link DFL-1100 User Manual page 128

Static Route Configuration for a Server on the DMZ:
Navigate to the SYSTEM tab, then the ROUTING page of the Web-based configuration.
Select the Add New link to create the second static route.
Select the Interface that the Internal Server is connected to (LAN or DMZ).
Specify the Public IP to be forwarded in the Network field.
The Subnet Mask should be set to 255.255.255.255 (1-host).
Enable the Proxy ARP feature.
The above static route configuration explicitly defines the interface that the additional
Public IP address should be forwarded to.
NOTE: Be sure to enable Proxy ARP for both routes or the Firewall will not forward traffic
destined for the specified Public IP addresses to Internal servers.
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