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Chapter 6 Broadband
Figure 73 IPv6 Rapid Deployment
DSL
Dual Stack Lite
Use Dual Stack Lite when local network computers use IPv4 and the ISP has an IPv6 network. When the
Zyxel Device has an IPv6 WAN address and you set IPv6/IPv4 Mode to IPv6 Only, you can enable Dual
Stack Lite to use IPv4 computers and services.
The Zyxel 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 Zyxel Device uses it's configured IPv6 WAN IP to route IPv6 traffic to the IPv6 Internet.
Figure 74 Dual Stack Lite
DSL
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