ZyXEL VMG3925-B10B User Guide - Page 60
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Chapter 6 Broadband Figure 17 IPv6 Rapid Deployment LAN - IPv6 - IPv4 WAN - IPv4 - IPv6 in IPv4 IPv6 + IPv4 ISP (IPv4) IPv6 in IPv4 IPv4 IPv4 Internet BR IPv6 Internet Dual Stack Lite Use Dual Stack Lite when local network computers use IPv4 and the ISP has an IPv6 network. When the VMG 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 VMG 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 VMG uses it's configured IPv6 WAN IP to route IPv6 traffic to the IPv6 Internet. Figure 18 Dual Stack Lite LAN - IPv6 - IPv4 WAN - IPv6 - IPv4 in IPv6 IPv6 + IPv4 ISP (IPv6) IPv6 IPv4 in IPv6 AFTR IPv4 Internet IPv6 Internet 6.1.3 Before You Begin You need to know your Internet access settings such as encapsulation and WAN IP address. Get this information from your ISP. VMG3925-B10B User's Guide 60