if err != nil {
		return err
	}
	return nil
}

// Deprecated: Use golang.org/x/net/bpf instead.
func CheckBpfVersion(fd int) error {
	var v BpfVersion
	err := ioctlPtr(fd, BIOCVERSION, unsafe.Pointer(&v))
	if err != nil {
		return err
	}
	if v.Major != BPF_MAJOR_VERSION || v.Minor != BPF_MINOR_VERSION {
		return EINVAL
	}
	return nil
}