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regeneration recovery failed due to Failed to replace Qdisc for lxc8a3af5d3166d #11076

@tgraf

Description

@tgraf

In a CI run, the managed etcd test failed:

/home/jenkins/workspace/Cilium-PR-K8s-GKE/src/github.com/cilium/cilium/test/ginkgo-ext/scopes.go:357
Found a "JoinEP: " in Cilium Logs

This by itself is not very exceptional, but the following is concerning:

	   endpoint-4058-regeneration-recovery         never          3s ago       2       regeneration recovery failed   

This indicates that the endpoint was never built successfully.

The underlying error is:

cilium-test.log:2020-04-21T00:22:08.745442775Z level=warning msg="JoinEP: Failed to load program" containerID=50d8dc2cf0 datapathPolicyRevision=1 desiredPolicyRevision=1 endpointID=4058 error="Failed to replace Qdisc for lxc8a3af5d3166d: Link not found" file-path=/var/run/cilium/state/4058/bpf_lxc.o identity=104 ipv4=10.52.224.159 ipv6= k8sPodName=kube-system/coredns-cc45bff6b-nn9x9 subsys=datapath-loader veth=lxc8a3af5d3166d

test_results_Cilium-PR-K8s-GKE_465_BDD-Test-PR.zip

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kind/bugThis is a bug in the Cilium logic.

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