Which transport does 6to4 utilize to carry IPv6 packets?

Study for the GCIA Fundamentals of Traffic Analysis Test. Prepare with flashcards and multiple-choice questions, each offering hints and in-depth explanations. Ace your exam with confidence!

Multiple Choice

Which transport does 6to4 utilize to carry IPv6 packets?

Explanation:
6to4 carries IPv6 packets by wrapping them inside IPv4 datagrams. The IPv4 header becomes the transporting envelope that routes the packet across the IPv4 Internet, while the IPv6 payload is delivered to the IPv6 network after decapsulation. This is why IPv4 is the transport used for 6to4 tunnels. TCP and UDP are transport-layer protocols for specific types of data, and they’re not used to carry the tunnel itself. The IPv6 packet is the payload, not the transport, so IPv6 isn’t the transport in this mechanism.

6to4 carries IPv6 packets by wrapping them inside IPv4 datagrams. The IPv4 header becomes the transporting envelope that routes the packet across the IPv4 Internet, while the IPv6 payload is delivered to the IPv6 network after decapsulation. This is why IPv4 is the transport used for 6to4 tunnels. TCP and UDP are transport-layer protocols for specific types of data, and they’re not used to carry the tunnel itself. The IPv6 packet is the payload, not the transport, so IPv6 isn’t the transport in this mechanism.

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