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3ae701f0eb
This defines a new magic IPv6 prefix, fd7a:115c:a1e0:b1a::/64, a
subset of our existing /48, where the final 32 bits are an IPv4
address, and the middle 32 bits are a user-chosen "site ID". (which
must currently be 0000:00xx; the top 3 bytes must be zero for now)
e.g., I can say my home LAN's "site ID" is "0000:00bb" and then
advertise its 10.2.0.0/16 IPv4 range via IPv6, like:
tailscale up --advertise-routes=fd7a:115c:a1e0:b1a::bb:10.2.0.0/112
(112 being /128 minuse the /96 v6 prefix length)
Then people in my tailnet can:
$ curl '[fd7a:115c:a1e0:b1a::bb:10.2.0.230]'
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ....
Updates #3616, etc
RELNOTE=initial support for TS IPv6 addresses to route v4 "via" specific nodes
Change-Id: I9b49b6ad10410a24b5866b9fbc69d3cae1f600ef
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
107 lines
2.7 KiB
Go
107 lines
2.7 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tsaddr
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import (
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"testing"
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"inet.af/netaddr"
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)
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func TestInCrostiniRange(t *testing.T) {
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tests := []struct {
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ip netaddr.IP
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want bool
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}{
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{netaddr.IPv4(192, 168, 0, 1), false},
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{netaddr.IPv4(100, 101, 102, 103), false},
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{netaddr.IPv4(100, 115, 92, 0), true},
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{netaddr.IPv4(100, 115, 92, 5), true},
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{netaddr.IPv4(100, 115, 92, 255), true},
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{netaddr.IPv4(100, 115, 93, 40), true},
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{netaddr.IPv4(100, 115, 94, 1), false},
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}
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for _, test := range tests {
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if got := ChromeOSVMRange().Contains(test.ip); got != test.want {
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t.Errorf("inCrostiniRange(%q) = %v, want %v", test.ip, got, test.want)
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}
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}
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}
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func TestTailscaleServiceIPv6(t *testing.T) {
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got := TailscaleServiceIPv6().String()
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want := "fd7a:115c:a1e0::53"
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if got != want {
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t.Errorf("got %q; want %q", got, want)
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}
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}
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func TestChromeOSVMRange(t *testing.T) {
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if got, want := ChromeOSVMRange().String(), "100.115.92.0/23"; got != want {
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t.Errorf("got %q; want %q", got, want)
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}
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}
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func TestCGNATRange(t *testing.T) {
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if got, want := CGNATRange().String(), "100.64.0.0/10"; got != want {
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t.Errorf("got %q; want %q", got, want)
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}
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}
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func TestNewContainsIPFunc(t *testing.T) {
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f := NewContainsIPFunc([]netaddr.IPPrefix{netaddr.MustParseIPPrefix("10.0.0.0/8")})
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if f(netaddr.MustParseIP("8.8.8.8")) {
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t.Fatal("bad")
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}
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if !f(netaddr.MustParseIP("10.1.2.3")) {
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t.Fatal("bad")
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}
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f = NewContainsIPFunc([]netaddr.IPPrefix{netaddr.MustParseIPPrefix("10.1.2.3/32")})
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if !f(netaddr.MustParseIP("10.1.2.3")) {
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t.Fatal("bad")
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}
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f = NewContainsIPFunc([]netaddr.IPPrefix{
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netaddr.MustParseIPPrefix("10.1.2.3/32"),
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netaddr.MustParseIPPrefix("::2/128"),
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})
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if !f(netaddr.MustParseIP("::2")) {
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t.Fatal("bad")
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}
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f = NewContainsIPFunc([]netaddr.IPPrefix{
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netaddr.MustParseIPPrefix("10.1.2.3/32"),
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netaddr.MustParseIPPrefix("10.1.2.4/32"),
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netaddr.MustParseIPPrefix("::2/128"),
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})
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if !f(netaddr.MustParseIP("10.1.2.4")) {
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t.Fatal("bad")
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}
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}
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var sinkIP netaddr.IP
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func BenchmarkTailscaleServiceAddr(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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sinkIP = TailscaleServiceIP()
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}
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}
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func TestUnmapVia(t *testing.T) {
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tests := []struct {
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ip string
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want string
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}{
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{"1.2.3.4", "1.2.3.4"}, // unchanged v4
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{"fd7a:115c:a1e0:b1a::bb:10.2.1.3", "10.2.1.3"},
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{"fd7a:115c:a1e0:b1b::bb:10.2.1.4", "fd7a:115c:a1e0:b1b:0:bb:a02:104"}, // "b1b",not "bia"
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}
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for _, tt := range tests {
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if got := UnmapVia(netaddr.MustParseIP(tt.ip)).String(); got != tt.want {
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t.Errorf("for %q: got %q, want %q", tt.ip, got, tt.want)
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}
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}
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}
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