)

type ifMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8
	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
}

		s = "0"
	}
	return s
}

// Addrs returns a list of unicast interface addresses for a specific
// interface.
func (ifi *Interface) Addrs() ([]Addr, error) {
	if ifi == nil {
		return nil, &OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errInvalidInterface}
	}
	ifat, err := interfaceAddrTable(ifi)
	if err != nil {
		err = &OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
	}
	return ifat, err

		}

		for _, ip := range svc.Status.LoadBalancer.Ingress {
			if ip.IP == "" {
				addrs = append(addrs, ip.Hostname)
			} else {
				addrs = append(addrs, ip.IP)
			}
		}

		addrs = append(addrs, svc.Spec.ExternalIPs...)
		return addrs
	}

	// get all pods acting as ingress gateways
	igSelector := getIngressGatewaySelector(ingressSelector, ingressService)

	return r.goLookupTXT(ctx, name)
}

func (r *Resolver) lookupAddr(ctx context.Context, addr string) ([]string, error) {
	order, conf := systemConf().addrLookupOrder(r, addr)
	if order == hostLookupCgo {
		return cgoLookupPTR(ctx, addr)
	}
	return r.goLookupPTR(ctx, addr, order, conf)

type IfaMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8
	Index     uint16
	Flags     int32
	Addrs     int32
	Addrflags int32
	Metric    int32
}

type IfmaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Index   uint16
	Flags   int32
	Addrs   int32
}

type IfAnnounceMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Index   uint16

	}
	for _, ip := range ipAddrs {
		addr, err := netip.ParseAddr(ip)
		if err != nil {
			// Should not happen
			continue
		}
		if addr.Is4() {
			v4 = true
		} else {
			v6 = true
		}
	}
	addrs := []string{}
	if v4 {
		if ip == "localhost" {
			addrs = append(addrs, "127.0.0.1")
		} else {
			addrs = append(addrs, "0.0.0.0")
		}
	}
	if v6 {

func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (int, error) {
	if !c.ok() {
		return 0, syscall.EINVAL
	}
	n, err := c.writeTo(b, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return n, err
}

// WriteTo implements the [PacketConn] WriteTo method.
func (c *IPConn) WriteTo(b []byte, addr Addr) (int, error) {
	if !c.ok() {

	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Metric  int32
}

type IfmaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       [2]byte
}

type IfmaMsghdr2 struct {
	Msglen   uint16
	Version  uint8
	Type     uint8
	Addrs    int32
	Flags    int32
	Index    uint16

	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Metric  int32
}

type IfmaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       [2]byte
}

type IfmaMsghdr2 struct {
	Msglen   uint16
	Version  uint8
	Type     uint8
	Addrs    int32
	Flags    int32
	Index    uint16

	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