if p.empty() {
		return nil, errors.New("mail: no address")
	}

	// address = mailbox / group
	// mailbox = name-addr / addr-spec
	// group = display-name ":" [group-list] ";" [CFWS]

	// addr-spec has a more restricted grammar than name-addr,
	// so try parsing it first, and fallback to name-addr.
	// TODO(dsymonds): Is this really correct?
	spec, err := p.consumeAddrSpec()
	if err == nil {
		var displayName string

const (
	pathMax = 0x400
)

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]int8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */
	Scope_id uint32
}

type RawSockaddrUnix struct {
	Len    uint8
	Family uint8

	Level int32
	Type  int32
}

type Inet4Pktinfo struct {
	Ifindex  uint32
	Spec_dst [4]byte /* in_addr */
	Addr     [4]byte /* in_addr */
}

type Inet6Pktinfo struct {
	Addr    [16]byte /* in6_addr */
	Ifindex uint32
}

type IPv6MTUInfo struct {
	Addr RawSockaddrInet6
	Mtu  uint32
}

type ICMPv6Filter struct {
	Filt [8]uint32
}

const (

const (
	PathMax = 0x400
)

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]int8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */
	Scope_id uint32
}

type RawSockaddrUnix struct {
	Len    uint8
	Family uint8

	}
	m := &InterfaceMessage{
		Version: int(b[2]),
		Type:    int(b[3]),
		Addrs:   make([]Addr, syscall.RTAX_MAX),
		Flags:   int(nativeEndian.Uint32(b[8:12])),
		Index:   int(nativeEndian.Uint16(b[12:14])),
		extOff:  w.extOff,
		raw:     b[:l],
	}
	a, err := parseLinkAddr(b[w.bodyOff:])
	if err != nil {
		return nil, err
	}
	m.Addrs[syscall.RTAX_IFP] = a
	m.Name = a.(*LinkAddr).Name
	return m, nil
}

	var addrs []uint64
	for _, s := range plan9Syms {
		if !validSymType[s.Type] {
			continue
		}
		addrs = append(addrs, s.Value)
	}
	sort.Sort(uint64s(addrs))

	var syms []Sym

	for _, s := range plan9Syms {
		if !validSymType[s.Type] {
			continue
		}
		sym := Sym{Addr: s.Value, Name: s.Name, Code: s.Type}
		i := sort.Search(len(addrs), func(x int) bool { return addrs[x] > s.Value })

		router.PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
	}
	registerHome(router, mainLayout)

	addr := o.Address
	if addr == "*" {
		addr = ""
	}

	// Canonicalize the address and resolve a dynamic port if necessary
	listener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", addr, o.Port))
	if err != nil {
		log.Errorf("Unable to start ControlZ: %v", err)
		return nil, err
	}

		sa := &SockaddrInet6{}
		copy(sa.Addr[:], b[offsetofInet6:])
		return sa, nil
	case family == AF_INET6:
		sa := &SockaddrInet6{}
		if l-1 < offsetofInet6 {
			copy(sa.Addr[:], b[1:l])
		} else {
			copy(sa.Addr[:], b[l-offsetofInet6:l])
		}
		return sa, nil
	case b[0] == SizeofSockaddrInet4:
		sa := &SockaddrInet4{}
		copy(sa.Addr[:], b[offsetofInet4:])
		return sa, nil

// interface.
func interfaceMulticastAddrTable(ifi *Interface) ([]Addr, error) {
	rib, err := route.FetchRIB(syscall.AF_UNSPEC, syscall.NET_RT_IFLIST2, ifi.Index)
	if err != nil {
		return nil, err
	}
	msgs, err := route.ParseRIB(syscall.NET_RT_IFLIST2, rib)
	if err != nil {
		return nil, err
	}
	ifmat := make([]Addr, 0, len(msgs))
	for _, m := range msgs {
		switch m := m.(type) {

// network interfaces. Otherwise it returns addresses for a specific
// interface.
func interfaceAddrTable(ifi *Interface) ([]Addr, error) {
	var name string
	if ifi != nil {
		name = ifi.Name
	}
	as, err := lif.Addrs(syscall.AF_UNSPEC, name)
	if err != nil {
		return nil, err
	}
	var ifat []Addr
	for _, a := range as {
		var ip IP
		var mask IPMask
		switch a := a.(type) {
		case *lif.Inet4Addr: