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CI: ConformanceAKS: write: connection reset by peer (expected 28, found -2) #29845

@pchaigno

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@pchaigno

Happened in https://github.com/cilium/cilium/actions/runs/7191406463/job/19586067261:

[=] Test [dns-only] [57/58]
.........
  ℹ️  📜 Applying CiliumNetworkPolicy 'client-egress-only-dns' to namespace 'cilium-test'..
  [-] Scenario [dns-only/pod-to-pod]
  [.] Action [dns-only/pod-to-pod/curl-ipv4-0: cilium-test/client2-5bcdb85f5f-kqpbc (10.0.1.211) -> cilium-test/echo-other-node-86644844cc-xtspl (10.0.0.226:8080)]
  [.] Action [dns-only/pod-to-pod/curl-ipv4-1: cilium-test/client2-5bcdb85f5f-kqpbc (10.0.1.211) -> cilium-test/echo-same-node-65cdf86fb7-wqj4n (10.0.1.128:8080)]
  [.] Action [dns-only/pod-to-pod/curl-ipv4-2: cilium-test/client-5597ff4fdf-nqrr7 (10.0.1.7) -> cilium-test/echo-other-node-86644844cc-xtspl (10.0.0.226:8080)]
  [.] Action [dns-only/pod-to-pod/curl-ipv4-3: cilium-test/client-5597ff4fdf-nqrr7 (10.0.1.7) -> cilium-test/echo-same-node-65cdf86fb7-wqj4n (10.0.1.128:8080)]
  [-] Scenario [dns-only/pod-to-world]
  [.] Action [dns-only/pod-to-world/http-to-bing.com-0: cilium-test/client-5597ff4fdf-nqrr7 (10.0.1.7) -> bing.com-http (bing.com:80)]
  [.] Action [dns-only/pod-to-world/https-to-bing.com-0: cilium-test/client-5597ff4fdf-nqrr7 (10.0.1.7) -> bing.com-https (bing.com:443)]
  [.] Action [dns-only/pod-to-world/https-to-bing.com-index-0: cilium-test/client-5597ff4fdf-nqrr7 (10.0.1.7) -> bing.com-https-index (bing.com:443)]
  [.] Action [dns-only/pod-to-world/http-to-bing.com-1: cilium-test/client2-5bcdb85f5f-kqpbc (10.0.1.211) -> bing.com-http (bing.com:80)]
  [.] Action [dns-only/pod-to-world/https-to-bing.com-1: cilium-test/client2-5bcdb85f5f-kqpbc (10.0.1.211) -> bing.com-https (bing.com:443)]
  ℹ️  unable to extract exit code from error: error with exec request (pod=cilium-test/client2-5bcdb85f5f-kqpbc, container=client2): error sending request: Post "[https://cilium-cil-cilium-cilium-71-986ec5-08sang3r.hcp.westeurope.azmk8s.io:443/api/v1/namespaces/cilium-test/pods/client2-5bcdb85f5f-kqpbc/exec?command=curl&command=-w&command=%25%7Blocal_ip%7D%3A%25%7Blocal_port%7D+-%3E+%25%7Bremote_ip%7D%3A%25%7Bremote_port%7D+%3D+%25%7Bresponse_code%7D&command=--silent&command=--fail&command=--show-error&command=--output&command=%2Fdev%2Fnull&command=--connect-timeout&command=2&command=--max-time&command=10&command=https%3A%2F%2Fbing.com%3A443&container=client2&stderr=true&stdout=true](https://cilium-cil-cilium-cilium-71-986ec5-08sang3r.hcp.westeurope.azmk8s.io/api/v1/namespaces/cilium-test/pods/client2-5bcdb85f5f-kqpbc/exec?command=curl&command=-w&command=%25%7Blocal_ip%7D%3A%25%7Blocal_port%7D+-%3E+%25%7Bremote_ip%7D%3A%25%7Bremote_port%7D+%3D+%25%7Bresponse_code%7D&command=--silent&command=--fail&command=--show-error&command=--output&command=%2Fdev%2Fnull&command=--connect-timeout&command=2&command=--max-time&command=10&command=https%3A%2F%2Fbing.com%3A443&container=client2&stderr=true&stdout=true)": write tcp 10.1.0.173:39130->51.124.76.20:443: write: connection reset by peer
  ❌ command "curl -w %{local_ip}:%{local_port} -> %{remote_ip}:%{remote_port} = %{response_code} --silent --fail --show-error --output /dev/null --connect-timeout 2 --max-time 10 [https://bing.com:443](https://bing.com/)" failed with unexpected exit code: error with exec request (pod=cilium-test/client2-5bcdb85f5f-kqpbc, container=client2): error sending request: Post "[https://cilium-cil-cilium-cilium-71-986ec5-08sang3r.hcp.westeurope.azmk8s.io:443/api/v1/namespaces/cilium-test/pods/client2-5bcdb85f5f-kqpbc/exec?command=curl&command=-w&command=%25%7Blocal_ip%7D%3A%25%7Blocal_port%7D+-%3E+%25%7Bremote_ip%7D%3A%25%7Bremote_port%7D+%3D+%25%7Bresponse_code%7D&command=--silent&command=--fail&command=--show-error&command=--output&command=%2Fdev%2Fnull&command=--connect-timeout&command=2&command=--max-time&command=10&command=https%3A%2F%2Fbing.com%3A443&container=client2&stderr=true&stdout=true](https://cilium-cil-cilium-cilium-71-986ec5-08sang3r.hcp.westeurope.azmk8s.io/api/v1/namespaces/cilium-test/pods/client2-5bcdb85f5f-kqpbc/exec?command=curl&command=-w&command=%25%7Blocal_ip%7D%3A%25%7Blocal_port%7D+-%3E+%25%7Bremote_ip%7D%3A%25%7Bremote_port%7D+%3D+%25%7Bresponse_code%7D&command=--silent&command=--fail&command=--show-error&command=--output&command=%2Fdev%2Fnull&command=--connect-timeout&command=2&command=--max-time&command=10&command=https%3A%2F%2Fbing.com%3A443&container=client2&stderr=true&stdout=true)": write tcp 10.1.0.173:39130->51.124.76.20:443: write: connection reset by peer (expected 28, found -2)

Sysdumps: cilium-sysdumps(3).zip

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area/CIContinuous Integration testing issue or flakeci/flakeThis is a known failure that occurs in the tree. Please investigate me!

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