D-Link DNS-327L User Manual page 218

Section 4 - Configuration
When configuring IPv6 with Static Mode, enter the IP address provided by your system administrator. The prefix length for an IPv6 subnet will
always be 64; no more, no less. Enter the Default Gateway, and DNS settings. Click Apply when complete. The IPv6 Settings table will now display
the settings in table format.
In order for the changes to take effect, you are prompted to re-login. Click OK and log in.
DNS-327L 213
D-Link ShareCenter User Manual