4 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.
13-FF-B6-08-75-FD
128.119.112.87
2B-FC-08-66-9C-99
128.119.112.27
37-25-83-E0-5C-47
128.119.71.81
78-00-F5-35-15-53
128.119.162.154
(1)
A
(2)
(3)
(4)
(5)
(6)
C
D
30-95-20-42-8C-24
128.119.71.130
29-08-15-3F-5A-78
128.119.162.29
31-E8-49-71-70-7E
128.119.71.160
Consider an IP datagram being sent from node A to node C. Give the source and destination Ethernet (MAC) addresses, as well as the source and destination IP addresses of datagram encapsulated within the Ethernet frame at points (1), (2), (4), and (6) in the figure above.