- feature_index = im->ip4_unicast_tx_feature_source_and_port_range_check;
-
- vec_validate (tx_cm->config_index_by_sw_if_index, sw_if_index);
-
- ci = tx_cm->config_index_by_sw_if_index[sw_if_index];
- ci = (is_add
- ? vnet_config_add_feature
- : vnet_config_del_feature)
- (vm, &tx_cm->config_main, ci, feature_index, &config,
- sizeof (config));
- tx_cm->config_index_by_sw_if_index[sw_if_index] = ci;
-
- vnet_config_update_tx_feature_count (lm, tx_cm, sw_if_index, is_add);
+ vnet_feature_enable_disable ("ip4-output",
+ "ip4-source-and-port-range-check-tx",
+ sw_if_index, is_add, &config,
+ sizeof (config));