Chapter 16 IP Tunnel
PMG5318-B20B User’s Guide
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16.2 IPv4inIPv6 (Dual Stack Lite)
Use DS-Lite (Dual Stack Lite) when local network computers use IPv4 and the ISP has an IPv6
network. When the GPON Device has an IPv6 WAN address and is set to IPv6 only, you can enable
Dual Stack Lite to use IPv4 computers and services.
The GPON Device tunnels IPv4 packets inside IPv6 encapsulation packets to the ISP’s Address
Family Transition Router (AFTR in the graphic) to connect to the IPv4 Internet. The local network
can also use IPv6 services. The GPON Device uses it’s configured IPv6 WAN IP to route IPv6 traffic
to the IPv6 Internet.
Table 56 IPv6inIPv4: Add
LABEL DESCRIPTION
Tunnel Name Enter a descriptive name for the IPv6 through IPv4 tunnel.
Mechanism The current mechanism is set to 6RD to tunnel IPv6 traffic from the local network through
the ISP’s IPv4 network.
Associated
WAN
Interface
Select a WAN interface to associate with the IPv6 to IPv4 tunnel.
Associated
LAN Interface
Select a LAN interface to associate with the IPv6 to IPv4 tunnel.
Manual/
Automatic
Select the 6RD type. Select Manual to set the 6RD type to static. Select Automatic to have
the GPON Device detect it automatically through DHCP.
IPv4 Mask
Length
Enter the subnet mask number (1~32) for the IPv4 network.
6rd Prefix
with Prefix
Length
Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP’s border relay router and connecting
to the native IPv6 Internet.
Border Relay
IPv4 Address
Specify the relay server’s IPv4 address in this field.
Primary IPv6
DNS server
Enter the first IPv6 DNS server address assigned by the ISP.
Secondary
IPv6 DNS
server
Enter the second IPv6 DNS server address assigned by the ISP.
Apply/Save Click this button to save your changes.
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