Problem $4(10$pts$)$: Consider the figure below. The IP and MAC addresses are shown for nodes A$,$ B$,$ C and D$,$ as well as for the router's interfaces.

Consider an IP datagram being sent from node C to node A$.$ Give the source and destination Ethernet $($MAC$)$ addresses, as well as the source and destination IP addresses of datagram encapsulated within the Ethermet frame at points $(6),(4),(2)$ and $(1)$ in the figure above.