var iv ivalue
	err := ioctlPtr(fd, BIOCGETIF, unsafe.Pointer(&iv))
	if err != nil {
		return "", err
	}
	return name, nil
}

// Deprecated: Use golang.org/x/net/bpf instead.
func SetBpfInterface(fd int, name string) error {
	var iv ivalue
	copy(iv.name[:], []byte(name))
	err := ioctlPtr(fd, BIOCSETIF, unsafe.Pointer(&iv))
	if err != nil {
		return err
	}
	return nil
}