// 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;

  // IP address allocated to the carp. Routable at least within the cluster.
  // Empty if not yet allocated.
  // +optional
  optional string carpIP = 6;