if instance.Endpoint.Address != "" {
			s.ip2instance[instance.Endpoint.Address] = append(s.ip2instance[instance.Endpoint.Address], instance)
		}
	}
}

func (s *serviceInstancesStore) updateInstances(key configKeyWithParent, instances []*model.ServiceInstance) {
	// first delete
	s.deleteInstanceKeys(key, instances)

	// second add
	s.addInstances(key, instances)
}

		}
		if event == model.EventDelete {
			s.serviceInstances.deleteServiceEntryInstances(namespacedName, key)
			s.serviceInstances.deleteInstanceKeys(parentKey, instancesUpdated)
		} else {
			s.serviceInstances.updateInstances(parentKey, instancesUpdated)
			s.serviceInstances.updateServiceEntryInstancesPerConfig(namespacedName, key, instance)
		}
		addConfigs(se, services)
	}

	for _, namespacedName := range unSelected {