WIP: debug DNS test

.github/workflows/test.yml

@@ -39,7 +39,7 @@ concurrency:
 
 jobs:
   race-root-integration:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false # don't abort the entire matrix if one element fails
       matrix:
@@ -54,7 +54,7 @@ jobs:
     - name: build test wrapper
       run: ./tool/go build -o /tmp/testwrapper ./cmd/testwrapper
     - name: integration tests as root
-      run: PATH=$PWD/tool:$PATH /tmp/testwrapper -exec "sudo -E" -race ./tstest/integration/
+      run: PATH=$PWD/tool:$PATH /tmp/testwrapper -exec "sudo -E" -race ./tstest/integration/ -verbose-tailscaled -verbose-tailscale
       env:
         TS_TEST_SHARD: ${{ matrix.shard }}
 

tstest/integration/integration_test.go

@@ -1153,6 +1153,11 @@ func TestDNSOverTCPIntervalResolver(t *testing.T) {
 		t.Fatalf("error converting self dns name to fqdn: %v", err)
 	}
 
+	out, err := n1.Tailscale("status").Output()
+	t.Logf("XXX: %s\n%s", err, string(out))
+	out, err = n1.Tailscale("dns", "status").Output()
+	t.Logf("XXX: %s\n%s", err, string(out))
+
 	cases := []struct {
 		network     string
 		serviceAddr netip.Addr
@@ -1170,6 +1175,7 @@ func TestDNSOverTCPIntervalResolver(t *testing.T) {
 		err = tstest.WaitFor(time.Second*5, func() error {
 			m := new(dns.Msg)
 			m.SetQuestion(selfDNSName.WithTrailingDot(), dns.TypeA)
+			t.Logf("XXX: dig %s @%s", selfDNSName.WithTrailingDot(), c.serviceAddr.String())
 			conn, err := net.DialTimeout(c.network, net.JoinHostPort(c.serviceAddr.String(), "53"), time.Second*1)
 			if err != nil {
 				return err