A company is replacing reserved public IP addresses with dynamic IP addresses. The network architect creates a list of assets with some dependencies to these reserved IPs: Which of the following…

The correct answer is D. IP reuse. When reserved (static) public IP addresses are released and replaced with dynamic IPs, the previously reserved addresses are returned to the public IP pool and can be reassigned by the cloud provider or ISP to entirely different organizations or services. Any external systems…

Cloud Network Operations and Troubleshooting

Question

A company is replacing reserved public IP addresses with dynamic IP addresses. The network architect creates a list of assets with some dependencies to these reserved IPs:

Which of the following issues may begin to affect cloud assets after the replacement is made?

Exhibit

Options

AIP asymmetric routing
BIP spoofing
CIP exhaustion
DIP reuse

How the community answered

(53 responses)

A
17% (9)
B
6% (3)
C
4% (2)
D
74% (39)

Explanation

When reserved (static) public IP addresses are released and replaced with dynamic IPs, the previously reserved addresses are returned to the public IP pool and can be reassigned by the cloud provider or ISP to entirely different organizations or services. Any external systems - such as firewall allowlists, partner integrations, DNS entries, TLS certificate pinning, or customer-configured access controls - that were configured to trust those specific IPs may now inadvertently trust an unknown third party who was assigned the reused IP. This is the IP reuse problem. IP asymmetric routing is a network path issue, IP spoofing is a deliberate attack, and dynamic IPs typically alleviate rather than cause IP exhaustion.

Topics

#IP address management#Dynamic IP addressing#IP reuse#Cloud asset dependencies

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