NETLINK_ROUTE		0
NETLINK_UNUSED		1
NETLINK_USERSOCK	2
NETLINK_FIREWALL	3
NETLINK_SOCK_DIAG	4
NETLINK_NFLOG		5
NETLINK_XFRM		6
NETLINK_SELINUX		7
NETLINK_ISCSI		8
NETLINK_AUDIT		9
NETLINK_FIB_LOOKUP	10
NETLINK_CONNECTOR	11
NETLINK_NETFILTER	12
NETLINK_IP6_FW		13
NETLINK_DNRTMSG		14
NETLINK_KOBJECT_UEVENT	15
NETLINK_GENERIC		16
NETLINK_SCSITRANSPORT	18
NETLINK_ECRYPTFS	19
NETLINK_RDMA		20
NETLINK_CRYPTO		21