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Table 21 Network > WAN > Internet Connection: IPoE Encapsulation (continued)
LABEL
DESCRIPTION
IPv6 DNS Server
This is available only when you select IPv4 Only in the IPv4/IPv6 field and set IPv6 Tunneling to 6RD,
6in4 or 6to4.
First DNS Server
Specify the DNS server IPv6 address assigned by the ISP.
Second DNS Server
Third DNS Server
IPv6 Address
This section is NOT available when you select IPv4 Only in the IPv4/IPv6 field.
Obtain an IP
Select this option if you want to obtain an IPv6 address from a DHCPv6 server.
Address
•
Automatically(DHCP
)
•
Static IP Address
Select this option if you have a fixed IPv6 address assigned by your ISP.
IPv6 Address
Enter the IPv6 address assigned by your ISP.
Prefix length
Enter the address prefix length to specify how many most significant bits in an IPv6
address compose the network address.
IPv6 Default
Enter the IPv6 address of the next-hop gateway. The gateway helps forward packets to
Gateway
their destinations.
Link Local Only
Select this option to use the link-local address which uniquely identifies a device on the
local network (the LAN).
IPv6 DNS Server
This is available only when you select Dual Stack or IPv6 Only in the IPv4/IPv6 field.
First DNS Server
Select Obtained From ISP to have the NBG6816 get the IPv6 DNS server addresses
from the ISP automatically.
Second DNS Server
Select User-Defined and enter the IPv6 DNS server address assigned by the ISP to
Third DNS Server
have the NBG6816 use the IPv6 DNS server addresses you configure manually.
Select None if you do not want to configure DNS servers. If you do not configure a DNS
server, you must know the IPv6 address of a computer in order to access it.
Multicast Setup
Multicast Setup
Select IGMPv1/v2 to enable multicasting. This applies to traffic routed from the WAN
to the LAN.
Select None to disable this feature. This may cause incoming traffic to be dropped or
sent to all connected network devices.
Auto-Subnet Configuration
Enable Auto-IP-
Select this option to have the NBG6816 change its LAN IP address to 10.0.0.1 or
Change Mode
192.168.1.1 accordingly when the NBG6816 gets a dynamic WAN IP address in the
same subnet as the LAN IP address 192.168.1.1 or 10.0.0.1.
The NAT, DHCP server and firewall functions on the NBG6816 are still available in this
mode.
Apply
Click Apply to save your changes back to the NBG6816.
Cancel
Click Cancel to begin configuring this screen afresh.
Chapter 10 WAN
Select DUID-LL (Default) to have the NBG6816 use DUID-LL (DUID Based on
Link-layer Address) for identification when exchanging DHCPv6 messages.
Select DUID-LLT to have the NBG6816 use DUID-LLT (DUID Based on Link-layer
Address Plus Time) for identification when exchanging DHCPv6 messages.
NBG6816 User's Guide
70
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