pub mod hrd {
pub const ETHER: u8 = 1;
pub const EETHER: u8 = 2;
pub const AX25: u8 = 3;
pub const PRONET: u8 = 4;
pub const CHAOS: u8 = 5;
pub const IEEE802: u8 = 6;
pub const ARCNET: u8 = 7;
pub const APPLETLK: u8 = 8;
pub const DLCI: u8 = 15;
pub const ATM: u8 = 19;
pub const MERICOM: u8 = 23;
pub const IEEE1394: u8 = 24;
pub const EUI64: u8 = 27;
pub const INFINIBAND: u8 = 32;
}