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  1. OpenShift Bugs
  2. OCPBUGS-13150

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

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Details

    • Bug
    • Resolution: Done
    • Major
    • None
    • 4.11
    • Networking / openshift-sdn
    • None
    • +
    • Important
    • No
    • Rejected
    • False
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    Description

      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.

      Attachments

        Issue Links

          blocks

          Bug - A problem that impairs or prevents the functions of the product. OCPBUGS-13785 EgressNetworkPolicy DNS resolution does not fall back to TCP for truncated responses

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          clones

          Bug - A problem that impairs or prevents the functions of the product. OCPBUGS-12435 EgressNetworkPolicy DNS resolution does not fall back to TCP for truncated responses

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is blocked by

          Bug - A problem that impairs or prevents the functions of the product. OCPBUGS-12435 EgressNetworkPolicy DNS resolution does not fall back to TCP for truncated responses

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is cloned by

          Bug - A problem that impairs or prevents the functions of the product. OCPBUGS-13785 EgressNetworkPolicy DNS resolution does not fall back to TCP for truncated responses

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          links to

          GitHub openshift/sdn#540: [release-4.13] OCPBUGS-13150: EgressNetworkPolicy DNS resolution does not fall back to TCP

          Activity

            People

              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: