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ipn/ipnlocal: fix app connector route advertisements on exit nodes

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If an app connector is also configured as an exit node, it should still
advertise discovered routes that are not covered by advertised routes,
excluding the exit node routes.

Updates tailscale/corp#16928

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker
2024-01-31 17:36:39 -08:00
committed by James Tucker
parent e1a4b89dbe
commit ba70cbb930
2 changed files with 19 additions and 6 deletions
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14
ipn/ipnlocal/local_test.go
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@@ -1218,7 +1218,7 @@ func TestObserveDNSResponse(t *testing.T) {
}
}
func TestCoveredRouteRange(t *testing.T) {
func TestCoveredRouteRangeNoDefault(t *testing.T) {
tests := []struct {
existingRoute netip.Prefix
newRoute netip.Prefix
@@ -1244,10 +1244,20 @@ func TestCoveredRouteRange(t *testing.T) {
newRoute: netip.MustParsePrefix("192.0.0.0/24"),
want: true,
},
{
existingRoute: netip.MustParsePrefix("0.0.0.0/0"),
newRoute: netip.MustParsePrefix("192.0.0.0/24"),
want: false,
},
{
existingRoute: netip.MustParsePrefix("::/0"),
newRoute: netip.MustParsePrefix("2001:db8::/32"),
want: false,
},
}
for _, tt := range tests {
got := coveredRouteRange([]netip.Prefix{tt.existingRoute}, tt.newRoute)
got := coveredRouteRangeNoDefault([]netip.Prefix{tt.existingRoute}, tt.newRoute)
if got != tt.want {
t.Errorf("coveredRouteRange(%v, %v) = %v, want %v", tt.existingRoute, tt.newRoute, got, tt.want)
}