                      = 0x00  AF_CCITT                          = 0xa  AF_CHAOS                          = 0x0  AF_CNT                            = 0x00  AF_COIP                           = 0x00  AF_DATAKIT                        = 0x0  AF_DECnet                         = 0xc  AF_DLI                            = 0xd  AF_E000                           = 0x0