Draytek Vigor2136 Series User Manual page 58

DNS Configuration
DHCPv6 Server
Configuration
DNS Configuration
More Settings -
Force DNS Redirection
Options under the Advanced Mode
Router IPv6 Address
Table
Unique Local Address
Configuration
It is available when Stateless is selected as the IPv6 Assignment.
DNS Assign Methods
RA(RDNSS) – The DNS server used for hosts (e.g., PC) will be

configured via the Router Advertisement Configuration.
Bit(DHCPv6) – The DNS server used for hosts will be configured

via DHCPv6 server.
Manual – Vigor router system will not send DNS sever

configuration to the hosts.
Primary DNS Address - Enter the IPv6 address for Primary DNS
server.
Secondary DNS Address - Enter another IPv6 address for DNS server
if required.
It is available when DHCPv6 (Stateful) is selected as the IPv6
Assignment.
On - Enables the built-in DHCPv6 server on the router.
Generate Prefix From – Select the primary WAN interface which

is capable to generate the prefix for IPv6 address. Use the drop
down list to specify a WAN interface for IPv6.
Auto IPv6 Address Range

Random IPv6 Address Allocation

Off - Disables the built-in DHCPv6 server on the router.
Relay - When selected, all DHCP requests are forwarded to a DHCP
server outside of the LAN subnet, and whose address is specified in
the DHCP Server IP Address field.
DHCPv6 Server Interface – Use the drop down list to specify a

WAN interface for IPv6.
DHCPv6 Server Address - Enter the IPv6 address of the DHCPv6

server.
It is available when DHCPv6 (Stateful) is selected as the IPv6
Assignment.
Primary DNS Address - Enter the IPv6 address for Primary DNS
server.
Secondary DNS Address - Enter another IPv6 address for DNS server
if required.
Enabled – Switch the toggle to enable or disable the function. This
function allows all outgoing DNS queries to be intercepted and
redirected to the router built-in DNS server, improving the domain
lookup performance by caching DNS queries and results.
Enter IPv6 Address and Prefix length to be added, or click an existing
IPv6 address to be deleted in the Current IPv6 Address Table below
and the values will be automatically copied over.
+Add – Click it to add a new entry. Max is 5.
Static IP Address – Enter the static IPv6 address for LAN.
Unique Local Addresses (ULAs) are private IPv6 addresses assigned to
LAN clients.
ULA Prefix – LAN clients will be assigned ULAs generated based on
the prefix manually entered.
Off – ULA is disabled.

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