The NIC_ITEM_CONFIG_SIZE macro in DxeNetLib is defined as: sizeof (NIC_IP4_CONFIG_INFO) + sizeof (EFI_IP4_ROUTE_TABLE) * MAX_IP4_CONFIG_IN_VARIABLE. This macro should be surrounded with parenthesis to avoid being incorrectly used. Cc: Fu Siyuan <siyuan.fu@intel.com> Cc: Ye Ting <ting.ye@intel.com> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Wang Fan <fan.wang@intel.com> Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>