Refer to the exhibit. Which interoperability technique implemented on the dual - stack routers would allow connectivity between IPv6 sites across automatic created tunnels using the 2002::/16 prefix? ()<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018073017580799505.jpg?sign=d51feaaec37286ca367e0eb91ba2d42f&t=62d0c8ff" />
A、Dual Stack
B、NAT - PT
C、6to4 tunnel
D、GRE tunnel
E、ISATAP tunnel