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Manage the Internet Settings Manually
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AC1600 WiFi VDSL/ADSL Modem Router Model D6400
If the NETGEAR website does not display within one minute, see Troubleshoot the
Internet Connection on page 280.
Specify an IPv6 Internet Connection
If you want to use an IPv6 Internet connection, you must specify the settings manually.
NETGEAR genie does not detect an IPv6 Internet connection automatically.
IPv6 Internet Connections and IPv6 Addresses
The modem router can support an IPv6 Internet connection through the following connection
types:
• Auto Detect. For more information, see Set Up an IPv6 Connection Through Auto Detect
on page 74.
• 6to4 tunnel. For more information, see Set Up an IPv6 6to4 Tunnel Connection on
page 76.
• Pass-through. For more information, see Set Up an IPv6 Pass-Through Connection on
page 77.
• Fixed. For more information, see Set Up an IPv6 Fixed Connection on page 78.
• DHCP. For more information, see Set Up an IPv6 DHCP Connection on page 80.
• PPP over Ethernet. For more information, see Set Up an IPv6 PPPoE Connection on
page 82.
• Auto Config. For more information, see Set Up an IPv6 Connection Through Auto Config
on page 84.
• 6rd tunnel. For more information, see Set Up an IPv6 6rd Tunnel Connection on
page 86.
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 76).
• 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 74).
• 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 84).
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