What is the meaning of the error message "ceph - ERROR: [Errno 99] Cannot assign requested address"?

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The error message "ceph - ERROR: [Errno 99] Cannot assign requested address" typically indicates that the system is unable to assign the requested IP address to a network interface. This may occur if the specified IP address is already in use by another device on the network, or if there is a problem with the network configuration. It can also occur if there is a problem with the network interface itself, such as a hardware failure or driver issue.