0  IFT_X00PLE                        = 0x00  IFT_XETHER                        = 0x0a  IGNBRK                            = 0x0  IGNCR                             = 0x00  IGNPAR                            = 0x0  IMAXBEL                           = 0x0000  INLCR                             = 0x00  INPCK                             = 0x00  IN_CLASSA_HOST                    = 0xffffff  IN_CLASSA_MAX                     = 0x00  IN_CLASSA_NET                     = 0xff000000  IN_CLASSA_NSHIFT                  = 0x00  IN_CLASSB_HOST                    = 0xffff  IN_CLASSB_MAX                     = 0x00000  IN_CLASSB_NET                     = 0xffff0000  IN_CLASSB_NSHIFT                  = 0x00  IN_CLASSC_HOST                    = 0xff  IN_CLASSC_NET                     = 0xffffff00  IN_CLASSC_NSHIFT                  = 0x0  IN_CLASSD_HOST                    = 0xfffffff  IN_CLASSD_NET                     = 0xf0000000  IN_CLASSD_NSHIFT                  = 0x0c  IN_L