D-Link DWR-966 User Manual page 44

Advanced Firewall Known Computers
Known computers are those in the local network that have an
alphanumeric name associated with its IP address. This association
allows the gateway to create a hostname mapping table, which is
useful in allowing you to identify computers by a unique name instead
of local IP address.
Hostname mapping for the known local network devices can be done
by clicking the "Add" button.
Computer Name: The name assigned to the host
IPv4 Address: Enter the host's IP address here if it uses an IPv4 address.
IPv6 Address: Enter the host's IP address here if it uses an IPv6 address.
Click Add to set the configuration.
Click Edit to edit the configuration.
Click Delete to delete the known computers.
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