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Manage the Internet Settings Manually
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AC1600 WiFi VDSL/ADSL Modem Router Model D6400
Which connection type you must use depends on your IPv6 ISP. Follow the directions that
your IPv6 ISP gave you.
• If your ISP did not provide details, use the 6to4 tunnel connection type (see Set Up an
IPv6 6to4 Tunnel Connection on page 78).
• If you are not sure what type of IPv6 connection the modem router uses, use the Auto
Detect connection type, which lets the modem router detect the IPv6 type that is in use
(see Set Up an IPv6 Connection Through Auto Detect on page 76).
• If your Internet connection does not use PPPoE, DHCP, a fixed IP address, or
pass-through but is IPv6, use the
Auto Config connection type, which lets the modem
router autoconfigure its IPv6 connection (see Set Up an IPv6 Connection Through Auto
Config on page 86).
When you enable IPv6 and select any connection type other than IPv6 pass-through, the
modem router starts the stateful packet inspection (SPI) firewall function on the WAN
interface.
The modem router creates connection records and checks every inbound IPv6
packet. If the inbound packet is not destined to the modem router itself and the modem router
does not expect to receive such a packet, or the packet is not in the connection record, the
modem router blocks this packet. This function works in two modes: In secured mode, the
modem router inspects both TCP and UDP packets. In open mode, the modem router
inspects UDP packets only.
IPv6 addresses are denoted by eight groups of hexadecimal quartets that are separated by
colons.
Y
ou can reduce any four-digit group of zeros within an IPv6 address to a single zero
or omit it. The following errors invalidate an IPv6 address:
• More than eight groups of hexadecimal quartets
• More than four hexadecimal characters in a quartet
• More than two colons in a row
Set Up an IPv6 Connection Through Auto Detect
If you are not sure what type of IPv6 connection the modem router uses, use the Auto Detect
connection type, which lets the modem router detect the IPv6 type that is in use.
To set up an IPv6 Internet connection through auto detection:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. T
ype 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 case-sensitive.
4. Click the OK button.
The BASIC Home page displays.