Possible cause

Whenever an IP address is classified as an Duplicate IP address, it is removed from the AgentAddressList ,hence the device will not be discovered using the same IP address. IP Tagging feature does not allow the IP address to be listed in the AgentAddressList, but allows the end-user to identify the IP addresses that are shared across networks or devices.

When a management IP address is classified as a Duplicate IP, it will be removed from the AgentAdressList and the device rediscovery will select any available IP address from the AgentAddressList. The DuplicateIP address cannot be used as management IP, the Management IP has to send or receive packets and wont be able to determine the source of the packet even after using the tag. An overlapping IP address is unreachable as no routes exist between the host running on the IP Manager and the overlapping IP address.