// +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;