"AddrPort.Addr",
		"AddrPort.Port",
		"AddrPort.IsValid",
		"Prefix.IsSingleIP",
		"Prefix.Masked",
		"Prefix.IsValid",
		"PrefixFrom",
		"Prefix.Addr",
		"Prefix.Bits",
		"AddrFrom4",
		"IPv6LinkLocalAllNodes",
		"IPv6Unspecified",
		"MustParseAddr",
		"MustParseAddrPort",
		"MustParsePrefix",
		"appendDecimal",
		"appendHex",
		"uint128.addOne",
		"uint128.and",
		"uint128.bitsClearedFrom",

	{IPv4(127, 0, 0, 1), true, false},
	{IPv4(240, 0, 0, 1), true, false},
	{IPv6unspecified, false, true},
	{IPv6loopback, false, true},
	{IPv6interfacelocalallnodes, false, true},
	{IPv6linklocalallnodes, false, true},
	{IPv6linklocalallrouters, false, true},
	{ParseIP("ff05::a:b:c:d"), false, true},
	{ParseIP("fe80::1:2:3:4"), false, true},
	{ParseIP("2001:db8::123:12:1"), false, true},
}

		std  net.IP
	}{
		{
			name: "IPv4 unspecified",
			ip:   IPv4Unspecified(),
			std:  net.IPv4zero,
		},
		{
			name: "IPv6 link-local all nodes",
			ip:   IPv6LinkLocalAllNodes(),
			std:  net.IPv6linklocalallnodes,
		},
		{
			name: "IPv6 link-local all routers",
			ip:   IPv6LinkLocalAllRouters(),
			std:  net.IPv6linklocalallrouters,
		},
		{
			name: "IPv6 loopback",

pkg net/netip, func AddrFrom4([4]uint8) Addr
pkg net/netip, func AddrFromSlice([]uint8) (Addr, bool)
pkg net/netip, func AddrPortFrom(Addr, uint16) AddrPort
pkg net/netip, func IPv4Unspecified() Addr
pkg net/netip, func IPv6LinkLocalAllNodes() Addr
pkg net/netip, func IPv6Unspecified() Addr
pkg net/netip, func MustParseAddr(string) Addr
pkg net/netip, func MustParseAddrPort(string) AddrPort
pkg net/netip, func MustParsePrefix(string) Prefix

	IPv6loopback               = IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
	IPv6interfacelocalallnodes = IP{0xff, 0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01}
	IPv6linklocalallnodes      = IP{0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01}
	IPv6linklocalallrouters    = IP{0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x02}
)

// See the Addr type's field docs.
var (
	z0    unique.Handle[addrDetail]
	z4    = unique.Make(addrDetail{})
	z6noz = unique.Make(addrDetail{IsV6: true})
)

// IPv6LinkLocalAllNodes returns the IPv6 link-local all nodes multicast
// address ff02::1.
func IPv6LinkLocalAllNodes() Addr { return AddrFrom16([16]byte{0: 0xff, 1: 0x02, 15: 0x01}) }

// IPv6LinkLocalAllRouters returns the IPv6 link-local all routers multicast
// address ff02::2.

		{"IPv4allsys", Var, 0},
		{"IPv4bcast", Var, 0},
		{"IPv4len", Const, 0},
		{"IPv4zero", Var, 0},
		{"IPv6interfacelocalallnodes", Var, 0},
		{"IPv6len", Const, 0},
		{"IPv6linklocalallnodes", Var, 0},
		{"IPv6linklocalallrouters", Var, 0},
		{"IPv6loopback", Var, 0},
		{"IPv6unspecified", Var, 0},
		{"IPv6zero", Var, 0},
		{"Interface", Type, 0},
		{"Interface.Flags", Field, 0},

pkg net, var ErrWriteToConnected error
pkg net, var IPv4allrouter IP
pkg net, var IPv4allsys IP
pkg net, var IPv4bcast IP
pkg net, var IPv4zero IP
pkg net, var IPv6interfacelocalallnodes IP
pkg net, var IPv6linklocalallnodes IP
pkg net, var IPv6linklocalallrouters IP
pkg net, var IPv6loopback IP
pkg net, var IPv6unspecified IP
pkg net, var IPv6zero IP
pkg net/http, const DefaultMaxHeaderBytes ideal-int