type Ifreq struct{ raw ifreq }

// NewIfreq creates an Ifreq with the input network interface name after
// validating the name does not exceed IFNAMSIZ-1 (trailing NULL required)
// bytes.
func NewIfreq(name string) (*Ifreq, error) {
	// Leave room for terminating NULL byte.
	if len(name) >= IFNAMSIZ {
		return nil, EINVAL
	}

	var ifr ifreq
	copy(ifr.Ifrn[:], name)

	return &Ifreq{raw: ifr}, nil
}

	p[0] = byte(proto >> 8)
	p[1] = byte(proto)
	lsall.Ifindex = ifindex
	e = Bind(s, &lsall)
	if e != nil {
		Close(s)
		return 0, e
	}
	return s, nil
}

type iflags struct {
	name  [IFNAMSIZ]byte
	flags uint16
}

// Deprecated: Use golang.org/x/net/bpf instead.
func SetLsfPromisc(name string, m bool) error {
	s, e := Socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC, 0)
	if e != nil {
		return e
	}

}

// Deprecated: Use golang.org/x/net/bpf instead.
func FlushBpf(fd int) error {
	err := ioctlPtr(fd, BIOCFLUSH, nil)
	if err != nil {
		return err
	}
	return nil
}

type ivalue struct {
	name  [IFNAMSIZ]byte
	value int16
}

// Deprecated: Use golang.org/x/net/bpf instead.
func BpfInterface(fd int, name string) (string, error) {
	var iv ivalue
	err := ioctlPtr(fd, BIOCGETIF, unsafe.Pointer(&iv))
	if err != nil {

		$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
		$2 == "ICMPV6_FILTER" ||
		$2 == "SOMAXCONN" ||
		$2 == "NAME_MAX" ||
		$2 == "IFNAMSIZ" ||
		$2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
		$2 ~ /^SYSCTL_VERS/ ||
		$2 ~ /^(MS|MNT)_/ ||
		$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
		$2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||
		$2 ~ /^LINUX_REBOOT_CMD_/ ||