func interfaceMulticastAddrTable(ifi *Interface) ([]Addr, error) {
	ifmat4 := parseProcNetIGMP("/proc/net/igmp", ifi)
	ifmat6 := parseProcNetIGMP6("/proc/net/igmp6", ifi)
	return append(ifmat4, ifmat6...), nil
}

func parseProcNetIGMP(path string, ifi *Interface) []Addr {
	fd, err := open(path)
	if err != nil {
		return nil
	}
	defer fd.close()
	var (
		ifmat []Addr
		name  string
	)

	ifam.parse = ifam.parseInterfaceAddrMessage
	ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDarwin15, bodyOff: sizeofIfmaMsghdrDarwin15}
	ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
	ifmam2 := &wireFormat{extOff: sizeofIfmaMsghdr2Darwin15, bodyOff: sizeofIfmaMsghdr2Darwin15}
	ifmam2.parse = ifmam2.parseInterfaceMulticastAddrMessage
	// Darwin kernels require 32-bit aligned access to routing facilities.

	if err != nil {
		t.Fatal(err)
	}
	ifStats := interfaceStats(ift)
	ifat, err := InterfaceAddrs()
	if err != nil {
		t.Fatal(err)
	}
	uniStats, err := validateInterfaceUnicastAddrs(ifat)
	if err != nil {
		t.Fatal(err)
	}
	var multiStats routeStats
	for _, ifi := range ift {
		ifmat, err := ifi.MulticastAddrs()
		if err != nil {
			t.Fatal(ifi, err)
		}

				ip = IPv4(sa.IP[0], sa.IP[1], sa.IP[2], sa.IP[3])
			case *route.Inet6Addr:
				ip = make(IP, IPv6len)
				copy(ip, sa.IP[:])
			}
			if ip != nil {
				ifmat = append(ifmat, &IPAddr{IP: ip})
			}
		}
	}
	return ifmat, nil

	}

	statusCode()
}

// CondCheck represents the conditional request made to the remote cache
// for validation during GET/HEAD object requests.
type CondCheck struct {
	ObjectInfo
	IfMatch           string     `json:"ifMatch,omitempty" msg:",omitempty"`
	IfNoneMatch       string     `json:"ifNoneMatch,omitempty" msg:",omitempty"`
	IfModifiedSince   *time.Time `json:"ifModSince,omitempty" msg:",omitempty"`

		compatFreeBSD32 = true // 386 emulation on amd64
	}
	var rtm, ifm, ifam, ifmam, ifanm *wireFormat
	if compatFreeBSD32 {
		rtm = &wireFormat{extOff: sizeofRtMsghdrFreeBSD10Emu - sizeofRtMetricsFreeBSD10Emu, bodyOff: sizeofRtMsghdrFreeBSD10Emu}
		ifm = &wireFormat{extOff: 16}
		ifam = &wireFormat{extOff: sizeofIfaMsghdrFreeBSD10Emu, bodyOff: sizeofIfaMsghdrFreeBSD10Emu}

	ifam := &wireFormat{extOff: sizeofIfaMsghdrDragonFlyBSD4, bodyOff: sizeofIfaMsghdrDragonFlyBSD4}
	ifam.parse = ifam.parseInterfaceAddrMessage
	ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDragonFlyBSD4, bodyOff: sizeofIfmaMsghdrDragonFlyBSD4}
	ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
	ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrDragonFlyBSD4, bodyOff: sizeofIfAnnouncemsghdrDragonFlyBSD4}

		}
	}
	ift, err := Interfaces()
	if err != nil {
		return false, err
	}
	for _, ifi := range ift {
		ifmat, err := ifi.MulticastAddrs()
		if err != nil {
			return false, err
		}
		for _, ifma := range ifmat {
			if ifma.(*IPAddr).IP.Equal(ip) {
				return true, nil
			}
		}
	}
	return false, nil
}

// Issue 21856.

		case "ObjectInfo":
			err = z.ObjectInfo.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "ObjectInfo")
				return
			}
		case "IfMatch":
			z.IfMatch, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "IfMatch")
				return
			}
		case "IfNoneMatch":
			z.IfNoneMatch, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "IfNoneMatch")
				return
			}

	Addrs     int32
	Flags     int32
	Index     uint16
	Pad_cgo_0 [2]byte
	Data      ifData
}

type IfMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8
	Addrs     int32
	Flags     int32
	Index     uint16
	Pad_cgo_0 [2]byte
	Data      IfData
}

type ifData struct {
	Type        uint8
	Physical    uint8
	Addrlen     uint8
	Hdrlen      uint8