51D-Link COVR-1900 User Manual
Section 3 - Configuration
IPv6 - 6rd
In this section the user can configure the IPv6 6r
d connection settings. Click Save at any time to save the changes you have 
made on this page.
Assign IPv6 Prefix Currently unsupported.
Primary DNS Server Enter the primary DNS server address.
Secondary DNS Server Enter the secondary DNS server address.
6rd Manual Configuration
Enable Hub and Spoke 
Mode
Enable this option if you want to minimize the number of 
routes to the destination by using a hub and spoke method 
of networking.
6rd Configuration Choose the 6r
d DHCPv4 Option to automatically discover 
and populate the data values, or Manual Configuration to 
enter the settings yourself.
Manual Configuration as the 6rd Configuration:
6rd IPv6 Prefix Enter the 6rd IPv6 prefix and mask length supplied by your ISP.
WAN IPv4 Address Displays the router’s IPv4 address.
6rd Border Relay IPv4 
Address
Enter the 6rd border relay IPv4 address settings supplied by 
your ISP.