// +optional
  optional string message = 3;

  // A brief CamelCase message indicating details about why the carp is in this state.
  // e.g. 'DiskPressure'
  // +optional
  optional string reason = 4;

  // IP address of the host to which the carp is assigned. Empty if not yet scheduled.
  // +optional
  optional string hostIP = 5;

          * 'node.kubernetes.io/network-unavailable=:NoSchedule' if NetworkUnavailable is true
          * 'node.kubernetes.io/disk-pressure=:NoSchedule' if DiskPressure is true
          * 'node.kubernetes.io/memory-pressure=:NoSchedule' if MemoryPressure is true
          * 'node.kubernetes.io/out-of-disk=:NoSchedule' if OutOfDisk is true