Which statement about 6to4 tunneling is true?
A. One tunnel endpoint must be configured with IPv4 only
B. It establishes a point-to-point tunnel
C. Both tunnel endpoints must be configured with IPv4 only
D. Both tunnel endpoints must support IPv4 and IPv6
Correct answer D.
Explanation :
The IPv6 data is encapsulated in an IPv6 header, and the entire IPv6 data and IPv6 header combined are encapsulated in an IPv4 header. To create a tunnel, you require dual-stack configured routers and IPv4 and IPv6 addresses configured at each end.