conf.servers = defaultNS
		}
	}()
	aas, err := adapterAddresses()
	if err != nil {
		return
	}

	for _, aa := range aas {
		// Only take interfaces whose OperStatus is IfOperStatusUp(0x01) into DNS configs.
		if aa.OperStatus != windows.IfOperStatusUp {
			continue
		}

		// Only take interfaces which have at least one gateway
		if aa.FirstGatewayAddress == nil {
			continue
		}

			index = aa.Ipv6IfIndex
		}
		if ifindex == 0 || ifindex == int(index) {
			ifi := Interface{
				Index: int(index),
				Name:  windows.UTF16PtrToString(aa.FriendlyName),
			}
			if aa.OperStatus == windows.IfOperStatusUp {
				ifi.Flags |= FlagUp
				ifi.Flags |= FlagRunning
			}
			// For now we need to infer link-layer service
			// capabilities from media types.

	PhysicalAddress        [syscall.MAX_ADAPTER_ADDRESS_LENGTH]byte
	PhysicalAddressLength  uint32
	Flags                  uint32
	Mtu                    uint32
	IfType                 uint32
	OperStatus             uint32
	Ipv6IfIndex            uint32
	ZoneIndices            [16]uint32
	FirstPrefix            *IpAdapterPrefix
	TransmitLinkSpeed      uint64
	ReceiveLinkSpeed       uint64

	Index           uint32
	Type            uint32
	Mtu             uint32
	Speed           uint32
	PhysAddrLen     uint32
	PhysAddr        [MAXLEN_PHYSADDR]byte
	AdminStatus     uint32
	OperStatus      uint32
	LastChange      uint32
	InOctets        uint32
	InUcastPkts     uint32
	InNUcastPkts    uint32
	InDiscards      uint32
	InErrors        uint32
	InUnknownProtos uint32
	OutOctets       uint32

	Index           uint32
	Type            uint32
	Mtu             uint32
	Speed           uint32
	PhysAddrLen     uint32
	PhysAddr        [MAXLEN_PHYSADDR]byte
	AdminStatus     uint32
	OperStatus      uint32
	LastChange      uint32
	InOctets        uint32
	InUcastPkts     uint32
	InNUcastPkts    uint32
	InDiscards      uint32
	InErrors        uint32
	InUnknownProtos uint32

		{"MibIfRow.InUnknownProtos", Field, 0},
		{"MibIfRow.Index", Field, 0},
		{"MibIfRow.LastChange", Field, 0},
		{"MibIfRow.Mtu", Field, 0},
		{"MibIfRow.Name", Field, 0},
		{"MibIfRow.OperStatus", Field, 0},
		{"MibIfRow.OutDiscards", Field, 0},
		{"MibIfRow.OutErrors", Field, 0},
		{"MibIfRow.OutNUcastPkts", Field, 0},
		{"MibIfRow.OutOctets", Field, 0},
		{"MibIfRow.OutQLen", Field, 0},

pkg syscall (windows-386), type MibIfRow struct, Mtu uint32
pkg syscall (windows-386), type MibIfRow struct, Name [256]uint16
pkg syscall (windows-386), type MibIfRow struct, OperStatus uint32
pkg syscall (windows-386), type MibIfRow struct, OutDiscards uint32
pkg syscall (windows-386), type MibIfRow struct, OutErrors uint32
pkg syscall (windows-386), type MibIfRow struct, OutNUcastPkts uint32