If your ISP did not give you a specific domain name, you can either leave this field blank or enter the
domain name of your IPv6 ISP. (Do not enter the domain name for the IPv4 ISP here.) For example, if
your ISP’s mail server is mail.xxx.yyy.zzz, enter xxx.yyy.zzz as the domain name.
8. Select an IP Address Assignment radio button:
Use DHCP Server. The modem router assigns IPv6 addresses to the devices on your home network
(the LAN) through a DHCP server. This method passes more information to LAN devices, but some
IPv6 systems might not support the DHCPv6 client function.
Auto Config. This is the default setting.
9. To specify the interface ID for the IPv6 address of the modem router’s LAN interface, select the Use
This Interface ID check box, and enter the interface ID.
If you do not specify an ID here, the modem router generates one automatically from its MAC address.
10. Select the IPv6 filtering mode:
Secured. In secured mode, which is the default mode, the modem router inspects both TCP and
UDP packets.
Open. In open mode, the modem router inspects UDP packets only.
11. Click the Apply button.
Your settings are saved.
Set Up an IPv6 6rd Tunnel Internet Connection
The 6rd protocol makes it possible to deploy IPv6 to sites using a service provider’s IPv4 network. 6rd uses
the service provider’s own IPv6 address prefix. This limits the operational domain of 6rd to the service
provider’s network and is under direct control of the service provider. The IPv6 service provided is equivalent
to native IPv6. The 6rd mechanism relies on an algorithmic mapping between the IPv6 and IPv4 addresses
that are assigned for use within the service provider’s network. This mapping allows for automatic
determination of IPv4 tunnel endpoints from IPv6 prefixes, allowing stateless operation of 6rd.
With a 6rd tunnel configuration, the modem router follows the RFC5969 standard, supporting two ways to
establish a 6rd tunnel IPv6 WAN connection:
Auto Detect mode. In IPv6 Auto Detect mode, when the modem router receives option 212 from the
DHCPv4 option, autodetect selects the IPv6 as 6rd tunnel setting.The modem router uses the 6rd option
information to establish the 6rd connection.
Manual mode. Select 6rd Tunnel. If the modem router receives option 212, the fields are automatically
completed. Otherwise, you must enter the 6rd settings.
To set up an IPv6 6rd tunnel Internet connection:
1. Launch a web browser from a WiFi-enabled computer or mobile device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and password are
Manage the Internet Settings Manually
Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000v2
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