1AF_UNSPEC	0
2AF_UNIX		1
3AF_INET		2
4AF_AX25		3
5AF_IPX		4
6AF_APPLETALK	5
7AF_NETROM	6
8AF_BRIDGE	7
9AF_ATMPVC	8
10AF_X25		9
11AF_INET6	10
12AF_ROSE		11
13AF_DECnet	12
14AF_NETBEUI	13
15AF_SECURITY	14
16AF_KEY		15
17AF_NETLINK	16
18AF_PACKET	17
19AF_ASH		18
20AF_ECONET	19
21AF_ATMSVC	20
22AF_RDS		21
23AF_SNA		22
24AF_IRDA		23
25AF_PPPOX	24
26AF_WANPIPE	25
27AF_LLC		26
28AF_IB		27
29AF_MPLS		28
30AF_CAN		29
31AF_TIPC		30
32AF_BLUETOOTH	31
33AF_IUCV		32
34AF_RXRPC	33
35AF_ISDN		34
36AF_PHONET	35
37AF_IEEE802154	36
38AF_CAIF		37
39AF_ALG		38
40AF_NFC		39
41AF_VSOCK	40
42AF_KCM		41
43AF_QIPCRTR	42
44AF_SMC		43
45