init(ifa_next: UnsafeMutablePointer<ifaddrs>!, ifa_name: UnsafeMutablePointer<CChar>!, ifa_flags: UInt32, ifa_addr: UnsafeMutablePointer<sockaddr>!, ifa_netmask: UnsafeMutablePointer<sockaddr>!, ifa_ifu: ifaddrs.__Unnamed_union_ifa_ifu, ifa_data: UnsafeMutableRawPointer!)