Specify Your Internet Settings 
31
AC1200 Smart WiFi Router with External Antennas
5. 
In the 
Internet Connection Type
list, select 
Fixed
.
6. 
Configure the fixed IPv6 addresses for the WAN connection:
•
IPv6 Address/Prefix Length
. The IPv6 address and prefix length of the router WAN 
interface.
•
Default IPv6 Gateway
. The IPv6 address of the default IPv6 gateway for the router’s 
WAN interface.
•
Primary DNS Server
. The primary DNS server that resolves IPv6 domain name 
records for the router.
•
Secondary DNS Server
. The secondary DNS server that resolves IPv6 domain 
name records for the router.
Note:
If you do not specify the DNS servers, the router uses the DNS servers 
that are configured for the IPv4 Internet connection on the Internet 
Setup screen. (See 
Manually Set Up the Internet Connection 
on 
page
21.)
7. 
Select an IP Address Assignment radio button:
•
Use DHCP Server
. This method passes more information to LAN devices but some 
IPv6 systems might not support the DHCv6 client function.
•
Auto Config
. This is the default setting.
This setting specifies how the router assigns IPv6 addresses to the devices on your home 
network (the LAN). 
8. 
In the 
IPv6 Address/Prefix Length
fields, specify the static IPv6 address and prefix length 
of the router’s LAN interface.
If you do not specify an ID here, the router generates one automatically from its MAC 
address.
9. 
Click the 
Apply
button.
Your settings are saved.