code: def kube_node_status_network_unavailable(self, metric, scraper_config):
          
          service_check_name = scraper_config['namespace'] + '.node.network_unavailable'
          for sample in metric.samples:
              node_tag = self._label_to_tag("node", sample[self.SAMPLE_LABELS], scraper_config)
              self._condition_to_service_check(
                  sample,
                  service_check_name,
                  self.condition_to_status_negative,
                  tags=[node_tag] + scraper_config['custom_tags'],
              )
docs: Whether the node is in a network unavailable state (legacy)