IPv6-in-IPv4 tunneling involves which of the following?

IPv6-in-IPv4 tunneling involves which of the following?

• A. IPv6 packets are transported inside an IPv4 packet.
• B. IPv4 packets are transported inside an IPv6 packet.
• C. IPv6 and IPv4 cannot be used together.
• D. IPv6 addresses are translated to IPv4 addresses directly.

Answer: (A)

IPv6-in-IPv4 tunneling works by encapsulating the entire IPv6 datagram inside the payload of an IPv4 packet. The outer IPv4 header carries the packet across the IPv4 network to the tunnel endpoint, where the IPv4 header is removed and the original IPv6 packet is delivered to its destination. This lets IPv6 traffic traverse IPv4 infrastructure without requiring changes to the intermediate routers. In other words, IPv6 packets travel inside IPv4 packets, not the other way around. The idea is encapsulation for transport over an incompatible network, not direct translation of addresses.

IPv6-in-IPv4 tunneling works by encapsulating the entire IPv6 datagram inside the payload of an IPv4 packet. The outer IPv4 header carries the packet across the IPv4 network to the tunnel endpoint, where the IPv4 header is removed and the original IPv6 packet is delivered to its destination. This lets IPv6 traffic traverse IPv4 infrastructure without requiring changes to the intermediate routers.

In other words, IPv6 packets travel inside IPv4 packets, not the other way around. The idea is encapsulation for transport over an incompatible network, not direct translation of addresses.