Question: 1 . Which fields in the IP datagram always change from one datagram to the next within this series of ICMP messages sent by your

1. Which fields in the IP datagram always change from one datagram to the next
within this series of ICMP messages sent by your computer?
2. Which fields stay constant? Which of the fields must stay constant? Which fields
must change? Why?
3. Describe the pattern you see in the values in the Identification field of the IP datagram
4. What is the value in the Identification field and the TTL field?
5. Do these values remain unchanged for all of the ICMP TTL-exceeded replies sent
to your computer by the nearest (first hop) router? Why?

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