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