NS_NAME_MAX_LEN
err = append_tid(net_config->ns0_name, NS_NAME_MAX_LEN);
err = append_tid(net_config->veth_cfg[i].namespace, NS_NAME_MAX_LEN);
char namespace[NS_NAME_MAX_LEN]; /* Namespace for the remote veth */
char ns0_name[NS_NAME_MAX_LEN];