0  IFF_DEBUG                         = 0x0  IFF_LINK0                         = 0x0000  IFF_LINK0                         = 0x0000  IFF_LINK0                         = 0x0000  IFF_LOOPBACK                      = 0x0  IFF_MULTICAST                     = 0x0000  IFF_NOARP                         = 0x00  IFF_NOTRAILERS                    = 0x00  IFF_OACTIVE                       = 0x000  IFF_POINTOPOINT                   = 0x00  IFF_PROMISC                       = 0x000  IFF_RUNNING                       = 0x00  IFF_SIMPLEX                       = 0x000  IFF_UP                            = 0x0  IFNAMSIZ                          = 0x00  IFT_0000                          = 0x0  IFT_A