There is a GRE tunnel configured over the Internet between Router-1 and Router-2. An OSPF adjacency is
configured over this GRE tunnel. However, the OSPF adjacency briefly reaches the Full state before it is torn
down. This cycle repeats indefinitely.
Which two actions would you perform to solve this problem? (Choose two.)
A.
Configure OSPF to not export the tunnel endpoint interface routes.
B.
Configure the GRE interfaces on both routers as passive interfaces in OSPF.
C.
Configure the physical WAN interfaces on both routers as passive OSPF interfaces.
D.
Configure static routes to the tunnel endpoints.