PF

pub const PF = struct {
    pub const UNSPEC = 0;
    pub const LOCAL = 1;
    pub const UNIX = LOCAL;
    pub const FILE = LOCAL;
    pub const INET = 2;
    pub const AX25 = 3;
    pub const IPX = 4;
    pub const APPLETALK = 5;
    pub const NETROM = 6;
    pub const BRIDGE = 7;
    pub const ATMPVC = 8;
    pub const X25 = 9;
    pub const INET6 = 10;
    pub const ROSE = 11;
    pub const DECnet = 12;
    pub const NETBEUI = 13;
    pub const SECURITY = 14;
    pub const KEY = 15;
    pub const NETLINK = 16;
    pub const ROUTE = PF.NETLINK;
    pub const PACKET = 17;
    pub const ASH = 18;
    pub const ECONET = 19;
    pub const ATMSVC = 20;
    pub const RDS = 21;
    pub const SNA = 22;
    pub const IRDA = 23;
    pub const PPPOX = 24;
    pub const WANPIPE = 25;
    pub const LLC = 26;
    pub const IB = 27;
    pub const MPLS = 28;
    pub const CAN = 29;
    pub const TIPC = 30;
    pub const BLUETOOTH = 31;
    pub const IUCV = 32;
    pub const RXRPC = 33;
    pub const ISDN = 34;
    pub const PHONET = 35;
    pub const IEEE802154 = 36;
    pub const CAIF = 37;
    pub const ALG = 38;
    pub const NFC = 39;
    pub const VSOCK = 40;
    pub const KCM = 41;
    pub const QIPCRTR = 42;
    pub const SMC = 43;
    pub const XDP = 44;
    pub const MAX = 45;
}