if oldPodSpec != nil {
		// if old spec has status.hostIPs downwardAPI set, we must allow it
		opts.AllowHostIPsField = opts.AllowHostIPsField || hasUsedDownwardAPIFieldPathWithPodSpec(oldPodSpec, "status.hostIPs")

		// if old spec used non-integer multiple of huge page unit size, we must allow it
		opts.AllowIndivisibleHugePagesValues = usesIndivisibleHugePagesValues(oldPodSpec)