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  1. OpenShift Bugs
  2. OCPBUGS-15084

EgressNetworkPolicy DNS resolution does not fall back to TCP for truncated responses

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    Description

      This is a clone of issue OCPBUGS-13785. The following is the description of the original issue:

      This is a clone of issue OCPBUGS-13150. The following is the description of the original issue:

      This is a clone of issue OCPBUGS-12435. The following is the description of the original issue:

      Description of problem:

      If the user specifies a DNS name in an egressnetworkpolicy for which the upstream server returns a truncated DNS response, openshift-sdn does not fall back to TCP as expected but just take this as a failure.
      

      Version-Release number of selected component (if applicable):

      4.11 (originally reproduced on 4.9)
      

      How reproducible:

      Always
      

      Steps to Reproduce:

      1. Setup an EgressNetworkPolicy that points to a domain where a truncated response is returned while querying via UDP.
      2.
      3.
      

      Actual results:

      Error, DNS resolution not completed.
      

      Expected results:

      Request retried via TCP and succeeded.
      

      Additional info:

      In comments.
      

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              rhn-support-palonsor Pablo Alonso Rodriguez
              openshift-crt-jira-prow OpenShift Prow Bot
              Huiran Wang Huiran Wang
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              Dates

                Created:
                Updated:
                Resolved: