Which of the following statements are true about the IPv6 over IPv4 tunnel? (Multiple Choice)

Which of the following statements are true about the IPv6 over IPv4 tunnel? (Multiple Choice)
A . Generally, a tunnel interface is created when configuring a manual tunnel on the VRP platform. A Virtual-Template interface is created when configuring an automatic tunnel.
B . Automatic tunnels have many more advantages than manual tunnels. The manual tunnels will be phased out.
C . A 6-to-4 automatic tunnel requires a specific IPv6 address segment. The prefix of the allocated address segment is 3ffe::/16.
D . The data encapsulation mode of all automatic tunnels is the same.
E . An ISATAP tunnel determines the destination IPv4 address based on the destination IPv6 address.

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Answer: DE