Internet Protocol version 6 (IPv6) is an Internet Layer protocol for packet- switched internetworks. Two islands of IPv6 networks are running IS-IS (IPv6 IGP). The routing protocol needs to operate over the tunnel over an IPv4 network. Which tunneling method can achieve this objective?
A) ISATAP tunnels
B) automatic IDC tunnels
C) 6to4 tunnels
D) GRE tunnels

Question

Quizplus · Accepted Answer

GRE tunnels can encapsulate a wide variety of network layer protocols, including IPv6, over an IPv4 network, making them suitable for this scenario.

Internet Protocol Version 6 (IPv6) Is an Internet Layer Protocol