Refer to the exhibit. A network engineer has configured GRE between two IOS routers. The state of the tunnel interface is continuously oscillating between up and down.
What is the solution to this problem?
A. Create a more specific static route to define how to reach the remote router.
B. Create a more specific ARP entry to define how to reach the remote router.
C. Save the configuration and reload the router.
D. Check whether the internet service provider link is stable
Correct Answer: A