What happens if the destination IP address in a datagram changes?
Understand the Problem
The question is asking about the implications of a change in the destination IP address within a datagram and how it affects network routing and packet delivery.
Answer
A change in the destination IP address causes the datagram to potentially fail reaching its intended recipient unless exceptions like NAT apply.
If the destination IP address in a datagram changes, the datagram may not reach its intended recipient. The source device will continue sending data to the old address unless informed otherwise. In scenarios like Network Address Translation (NAT), the destination IP may change in a controlled manner to redirect traffic.
Answer for screen readers
If the destination IP address in a datagram changes, the datagram may not reach its intended recipient. The source device will continue sending data to the old address unless informed otherwise. In scenarios like Network Address Translation (NAT), the destination IP may change in a controlled manner to redirect traffic.
More Information
Datagrams rely on destination IPs to find the correct path in a network. Systems with mechanisms like NAT alter IP addresses on purpose for routing, but unintended changes disrupt communication.
Tips
A common mistake is assuming all IP changes are errors. Some changes, like those in NAT, are deliberate for routing purposes.
Sources
- What happen if destination IP address change - Cisco Community - community.cisco.com
- Network Address Translation - cs.umass.edu - gaia.cs.umass.edu
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