What are two benefits of using 6to4 as an IPv6 transition method? (Choose two.)
A. 6to4 tunnels allow isolated IPv6 domains to be remotely connected over IPv4 networks.
B. Manual configuration (scalability) is easier.
C. Point-to-multipoint automatic tunneling (automatic 6to4) is available.
D. An infinite number of address spaces are allocated to an IPv6 subnet.
E. Globally unique IPv4 addresses are not required.
