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CI: K8s Network E2E tests (dual) / Networking Granular Checks: Services should function for endpoint-Service: sctp [Feature:SCTPConnectivity] #40575

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CI: K8s Network E2E tests (dual) / Networking Granular Checks: Services should function for endpoint-Service: sctp [Feature:SCTPConnectivity]#40575
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area/CIContinuous Integration testing issue or flakeci/flakeThis is a known failure that occurs in the tree. Please investigate me!staleThe stale bot thinks this issue is old. Add "pinned" label to prevent this from becoming stale.
@marseel

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@marseel
marseel
opened on Jul 18, 2025

CI failure

[It] [sig-network] Networking Granular Checks: Services should function for endpoint-Service: sctp [Feature:SCTPConnectivity]

[TIMEDOUT] A suite timeout occurred
In [It] at: k8s.io/kubernetes/test/e2e/network/networking.go:263 @ 07/17/25 18:58:58.057

This is the Progress Report generated when the suite timeout occurred:
  [sig-network] Networking Granular Checks: Services should function for endpoint-Service: sctp [Feature:SCTPConnectivity] (Spec Runtime: 59m53.329s)
    k8s.io/kubernetes/test/e2e/network/networking.go:263
    In [It] (Node Runtime: 59m53.161s)
      k8s.io/kubernetes/test/e2e/network/networking.go:263
      At [By Step] dialing(sctp) netserver-0 (endpoint) --> 10.96.79.104:95 (config.clusterIP) (Step Runtime: 59m11.355s)
        k8s.io/kubernetes/test/e2e/network/networking.go:265

      Spec Goroutine
      goroutine 6281 [select, 3 minutes]
        k8s.io/client-go/tools/remotecommand.(*wsStreamExecutor).StreamWithContext(0xc000d42500, {0x58da688, 0x7ada000}, {{0x0, 0x0}, {0x5897e60, 0xc00276f770}, {0x5897e60, 0xc00276f7a0}, 0x0, ...})
          k8s.io/client-go/tools/remotecommand/websocket.go:169
        k8s.io/client-go/tools/remotecommand.(*FallbackExecutor).StreamWithContext(0xc002b94000, {0x58da688, 0x7ada000}, {{0x0, 0x0}, {0x5897e60, 0xc00276f770}, {0x5897e60, 0xc00276f7a0}, 0x0, ...})
          k8s.io/client-go/tools/remotecommand/fallback.go:54
        k8s.io/kubernetes/test/e2e/framework/pod.execute({0x58da688, 0x7ada000}, 0xc000953710, 0xc00061e488, {0x0, 0x0}, {0x5897e60, 0xc00276f770}, {0x5897e60, 0xc00276f7a0}, ...)
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:208
        k8s.io/kubernetes/test/e2e/framework/pod.ExecWithOptionsContext({0x58da688, 0x7ada000}, 0xc004844000, {{0xc00276e210, 0x3, 0x3}, {0xc0037c0990, 0xc}, {0xc004527d58, 0x12}, ...})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:85
        k8s.io/kubernetes/test/e2e/framework/pod.ExecWithOptions(...)
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:58
        k8s.io/kubernetes/test/e2e/framework/pod.ExecCommandInContainerWithFullOutput(0xc004fb4ac0?, {0xc004527d58?, 0x7ada000?}, {0xc000726ba0?, 0x0?}, {0xc00276e210?, 0x30?, 0x7ff118601e18?})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:97
        k8s.io/kubernetes/test/e2e/framework/pod.execCommandInPodWithFullOutput({0x7ff118601e18, 0xc000ca0180}, 0xc004844000, {0xc004527d58, 0x12}, {0xc00276e210, 0x3, 0x3})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:135
        k8s.io/kubernetes/test/e2e/framework/pod.ExecShellInPodWithFullOutput({0x7ff118601e18, 0xc000ca0180}, 0xc004844000, {0xc004527d58, 0x12}, {0xc0046c02a0, 0x6d})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:145
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).GetResponseFromContainer(0xc0004bc2a0, {0x7ff118601e18, 0xc000ca0180}, {0x507ad10, 0x4}, {0x5083c8f, 0x8}, {0xc00093ad30, 0xb}, {0xc000f5a5d4, ...}, ...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:426
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).DialFromContainer(0xc0004bc2a0, {0x7ff118601e18, 0xc000ca0180}, {0x507ad10, 0x4}, {0x5083c8f, 0x8}, {0xc00093ad30, 0xb}, {0xc000f5a5d4, ...}, ...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:335
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).DialFromEndpointContainer(...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:220
      > k8s.io/kubernetes/test/e2e/network.init.func21.6.9({0x7ff118601e18, 0xc000ca0180})
          k8s.io/kubernetes/test/e2e/network/networking.go:266
        github.com/onsi/ginkgo/v2/internal.extractBodyFunction.func2({0x58e43c8?, 0xc000ca0180?})
          github.com/onsi/ginkgo/v2@v2.21.0/internal/node.go:465
        github.com/onsi/ginkgo/v2/internal.(*Suite).runNode.func3()
          github.com/onsi/ginkgo/v2@v2.21.0/internal/suite.go:894
        github.com/onsi/ginkgo/v2/internal.(*Suite).runNode in goroutine 3788
          github.com/onsi/ginkgo/v2@v2.21.0/internal/suite.go:881

Probably related failure as well:

[It] [sig-network] [Feature:IPv6DualStack] Granular Checks: Services Secondary IP Family [LinuxOnly] should function for pod-Service: sctp [Feature:SCTPConnectivity]

With error:

[TIMEDOUT] A suite timeout occurred
In [It] at: k8s.io/kubernetes/test/e2e/network/dual_stack.go:454 @ 07/17/25 16:07:03.794

This is the Progress Report generated when the suite timeout occurred:
  [sig-network] [Feature:IPv6DualStack] Granular Checks: Services Secondary IP Family [LinuxOnly] should function for pod-Service: sctp [Feature:SCTPConnectivity] (Spec Runtime: 57m5.744s)
    k8s.io/kubernetes/test/e2e/network/dual_stack.go:454
    In [It] (Node Runtime: 57m5.663s)
      k8s.io/kubernetes/test/e2e/network/dual_stack.go:454
      At [By Step] dialing(sctp) test-container-pod --> fd00:10:96::1db9:95 (config.clusterIP) (Step Runtime: 56m17.476s)
        k8s.io/kubernetes/test/e2e/network/dual_stack.go:456

      Spec Goroutine
      goroutine 7368 [select, 5 minutes]
        k8s.io/client-go/tools/remotecommand.(*wsStreamExecutor).StreamWithContext(0xc000f66100, {0x58da688, 0x7ada000}, {{0x0, 0x0}, {0x5897e60, 0xc004213410}, {0x5897e60, 0xc004213530}, 0x0, ...})
          k8s.io/client-go/tools/remotecommand/websocket.go:169
        k8s.io/client-go/tools/remotecommand.(*FallbackExecutor).StreamWithContext(0xc00445aa80, {0x58da688, 0x7ada000}, {{0x0, 0x0}, {0x5897e60, 0xc004213410}, {0x5897e60, 0xc004213530}, 0x0, ...})
          k8s.io/client-go/tools/remotecommand/fallback.go:54
        k8s.io/kubernetes/test/e2e/framework/pod.execute({0x58da688, 0x7ada000}, 0xc0031dc480, 0xc000646008, {0x0, 0x0}, {0x5897e60, 0xc004213410}, {0x5897e60, 0xc004213530}, ...)
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:208
        k8s.io/kubernetes/test/e2e/framework/pod.ExecWithOptionsContext({0x58da688, 0x7ada000}, 0xc0038ba000, {{0xc002e14000, 0x3, 0x3}, {0xc001c5df70, 0xe}, {0xc000aa66f0, 0x12}, ...})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:85
        k8s.io/kubernetes/test/e2e/framework/pod.ExecWithOptions(...)
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:58
        k8s.io/kubernetes/test/e2e/framework/pod.ExecCommandInContainerWithFullOutput(0xc001398100?, {0xc000aa66f0?, 0x7ada000?}, {0xc00201e150?, 0x0?}, {0xc002e14000?, 0x30?, 0x7fde8492bb18?})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:97
        k8s.io/kubernetes/test/e2e/framework/pod.execCommandInPodWithFullOutput({0x7fde8492bb18, 0xc002756d20}, 0xc0038ba000, {0xc000aa66f0, 0x12}, {0xc002e14000, 0x3, 0x3})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:135
        k8s.io/kubernetes/test/e2e/framework/pod.ExecShellInPodWithFullOutput({0x7fde8492bb18, 0xc002756d20}, 0xc0038ba000, {0xc000aa66f0, 0x12}, {0xc000351180, 0x71})
          k8s.io/kubernetes/test/e2e/framework/pod/exec_util.go:145
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).GetResponseFromContainer(0xc00062cc40, {0x7fde8492bb18, 0xc002756d20}, {0x507ad10, 0x4}, {0x5083c8f, 0x8}, {0xc0049d8e50, 0xb}, {0xc0049d93d0, ...}, ...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:426
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).DialFromContainer(0xc00062cc40, {0x7fde8492bb18, 0xc002756d20}, {0x507ad10, 0x4}, {0x5083c8f, 0x8}, {0xc0049d8e50, 0xb}, {0xc0049d93d0, ...}, ...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:335
        k8s.io/kubernetes/test/e2e/framework/network.(*NetworkingTestConfig).DialFromTestContainer(...)
          k8s.io/kubernetes/test/e2e/framework/network/utils.go:225
      > k8s.io/kubernetes/test/e2e/network.init.func7.11.3({0x7fde8492bb18, 0xc002756d20})
          k8s.io/kubernetes/test/e2e/network/dual_stack.go:457
        github.com/onsi/ginkgo/v2/internal.extractBodyFunction.func2({0x58e43c8?, 0xc002756d20?})
          github.com/onsi/ginkgo/v2@v2.21.0/internal/node.go:465
        github.com/onsi/ginkgo/v2/internal.(*Suite).runNode.func3()
          github.com/onsi/ginkgo/v2@v2.21.0/internal/suite.go:894
        github.com/onsi/ginkgo/v2/internal.(*Suite).runNode in goroutine 6855
          github.com/onsi/ginkgo/v2@v2.21.0/internal/suite.go:881

Some more instances of failure:
https://github.com/cilium/cilium/actions/runs/16352021707
https://github.com/cilium/cilium/actions/runs/16348510027
https://github.com/cilium/cilium/actions/runs/16324085777
https://github.com/cilium/cilium/actions/runs/16316108067

Sysdump from https://github.com/cilium/cilium/actions/runs/16352076580
cilium-sysdumps-dual.zip

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