if (rule != null) {
          wildcardMatch = rule
          break
        }
      }
    }

    // Exception rules only apply to wildcard rules, so only try it if we matched a wildcard.
    var exception: String? = null
    if (wildcardMatch != null) {
      for (labelIndex in 0 until domainLabelsUtf8Bytes.size - 1) {
        val rule =