Tenda AC1200 - SIM PIN (3 G;4 G wireless router mode)

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Wait a moment. The 6to4 tunnel configuration succeeds when the result is shown as below.
6rd tunnel
As shown below, the two routers support dual stack protocol. To achieve the communication
between the two hosts, you can configure the 6rd tunnel.
Assume that the two routers are connected to IPv4 network and obtain public IPv4 addresses.
Configuring procedure:
Before configuring the 6rd tunnel, navigate to View system information to find the WAN IPv4 address
of the router.
Step 1 Configure Router 1.
1. Start a web browser on a device connected to the router 1 and visit tendawifi.com to log
in to the web UI of the router.
2. Choose IPv6.
IPv4
6rd
WAN IPv4: 1.1.1.1
WAN IPv6:
2001:db8:1010:1010::101:101/32
WAN IPv4 address: 1.1.2.1
WAN IPv6:
2001:db8:1010:2010::101:201/32
IPv6 computer 1:
2001:db8:ac10:c810:560:febc:add:9379
IPv6 computer 2
2001:db8:c84c:1:1036:66d1:a340:aac6
Router 1
Router 2