What are two point-to-multipoint overlay tunneling strategies that are used in transitioning to IPv6 (choose two)?

What are two point-to-multipoint overlay tunneling strategies that are used in transitioning to IPv6 (choose two)?
A . ISATAP
B . 6to4
C . Nat64
D . Dual-stack

View Answer

Answer: A, B

Explanation:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/xe-3s/ir-xe-3s-book/ip6-6to4-tunlsxe.html

"The key difference between automatic 6to4 tunnels and manually configured tunnels is that the tunnel is not point-to-point; it is point-to-multipoint."

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/xe-3s/ir-xe-3s-book/ip6-isatap-xe.html

"ISATAP Point-to-multipoint tunnels that can be used to connect systems within a site."