Netlink socket address
family: sa_family_t = AF.NETLINK__pad1: c_ushort = 0pid: u32port ID
groups: u32multicast groups mask
pub const nl = extern struct {
family: sa_family_t = AF.NETLINK,
__pad1: c_ushort = 0,
/// port ID
pid: u32,
/// multicast groups mask
groups: u32,
}