"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",

	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},