var value IPMreqn
	vallen := _Socklen(SizeofIPMreqn)
	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
	return &value, errno
}

func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {

	var value IPMreqn
	vallen := _Socklen(SizeofIPMreqn)
	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
	return &value, errno
}

func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

// GetsockoptXucred is a getsockopt wrapper that returns an Xucred struct.

	var value IPMreqn
	vallen := _Socklen(SizeofIPMreqn)
	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
	return &value, errno
}

func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

// GetsockoptXucred is a getsockopt wrapper that returns an Xucred struct.

func GetsockoptUcred(fd, level, opt int) (*Ucred, error) {
	var value Ucred
	vallen := _Socklen(SizeofUcred)
	err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
	return &value, err
}

func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

	var value TpacketStatsV3
	vallen := _Socklen(SizeofTpacketStatsV3)
	err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
	return &value, err
}

func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

func SetsockoptPacketMreq(fd, level, opt int, mreq *PacketMreq) error {

		{"Setrlimit", Func, 0},
		{"Setsid", Func, 0},
		{"Setsockopt", Func, 0},
		{"SetsockoptByte", Func, 0},
		{"SetsockoptICMPv6Filter", Func, 2},
		{"SetsockoptIPMreq", Func, 0},
		{"SetsockoptIPMreqn", Func, 0},
		{"SetsockoptIPv6Mreq", Func, 0},
		{"SetsockoptInet4Addr", Func, 0},
		{"SetsockoptInt", Func, 0},
		{"SetsockoptLinger", Func, 0},
		{"SetsockoptString", Func, 0},