• Auto Detect. For more information, see Set Up an IPv6 Connection Through Auto Detect on page
85.
• 6to4 tunnel. For more information, see Set Up an IPv6 6to4 Tunnel Connection on page 87.
• Pass-through. For more information, see Set Up an IPv6 Pass-Through Connection on page 89.
• Fixed. For more information, see Set Up an IPv6 Fixed Connection on page 90.
• DHCP. For more information, see Set Up an IPv6 DHCP Connection on page 92.
• PPP over Ethernet. For more information, see Set Up an IPv6 PPPoE Connection on page 94.
• Auto Config. For more information, see Set Up an IPv6 Connection Through Auto Config on page
96.
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 87).
• 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 85).
• 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 96).
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.You
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.
Manage the Internet Settings Manually
85
Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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