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  1. OpenShift Bugs
  2. OCPBUGS-26059

metallb frr logs error processing configuration change: duplicated prefix list value

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Normal Normal
    • 4.16
    • 4.12.z
    • Networking / Metal LB
    • None
    • Moderate
    • Yes
    • CNF Network Sprint 247, CNF Network Sprint 248
    • 2
    • False
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      Description of problem:

      Customer is using metallb and use the following annotation "metallb.universe.tf/allow-shared-ip".

      Customer see the following logs in the frr.log of the speaker pod 

      
0030-failing-metallb-must-gather.tar.gz/must-gather.local.7531557732664967822/quay-io-openshift-release-dev-ocp-v4-0-art-dev-sha256-62a865e00c09e1aa67ecdaa918307bca6aedf119a71179f5ab17d4ff627781b9/namespaces/metallb-system/pods/speaker-5ls4l/frr/frr/logs/frr.log 
...
2023/12/22 00:43:54.443 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.16-pl-ipv4']/entry[sequence='3']/ipv4-prefix]
2023/12/22 00:43:54.443 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.443 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration
2023/12/22 00:43:54.443 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.16-pl-ipv4']/entry[sequence='4']/ipv4-prefix]
2023/12/22 00:43:54.443 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.443 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration
2023/12/22 00:43:54.444 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.16-pl-ipv4']/entry[sequence='6']/ipv4-prefix]
2023/12/22 00:43:54.444 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.444 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration
2023/12/22 00:43:54.444 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.17-pl-ipv4']/entry[sequence='3']/ipv4-prefix]
2023/12/22 00:43:54.444 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.444 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration
2023/12/22 00:43:54.445 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.17-pl-ipv4']/entry[sequence='4']/ipv4-prefix]
2023/12/22 00:43:54.445 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.445 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration
2023/12/22 00:43:54.446 ZEBRA: [EC 100663331] error processing configuration change: error [validation] event [validate] operation [modify] xpath [/frr-filter:lib/prefix-list[type='ipv4'][name='10.214.16.17-pl-ipv4']/entry[sequence='6']/ipv4-prefix]
2023/12/22 00:43:54.446 ZEBRA: [EC 100663331] error processing configuration change: duplicated prefix list value: 10.76.112.105/32
2023/12/22 00:43:54.446 ZEBRA: [EC 100663337] nb_candidate_commit_prepare: failed to validate candidate configuration

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

      OCP 4.12
registry.redhat.io/openshift4/frr-rhel8@sha256:b2e62f73025d757292d4f65d7d97ff3e036df8f6ebdfc2f797cf34ec1b191a9b
=> package frr version: frr-7.5-11.el8_6.5.x86_64

      How reproducible:

      Moving from version : 
 - frr-7.5-11.el8_6.3.x86_64
to
- frr-7.5-11.el8_6.5.x86_64

Change log for frr-7.5-11.el8_6.5.x86_64

2023-10-24 Michal Ruprich <mruprich@redhat.com> - 7.5-11.5
- Resolves: RHEL-13871 - crash in plist update

2023-10-17 Michal Ruprich <mruprich@redhat.com> - 7.5-11.4
- Resolves: RHEL-5116 - Duplicated prefix lists when no seq is specified <---------------------

2023-10-09 Stepan Broz <sbroz@redhat.com> - 7.5-11.el8_6.3
- Resolves: RHEL-11669 - eBGP multihop peer flapping due to delta miscalculation
of new configuration

      Steps to Reproduce:

          1. Install the new version 
    2.
    3.

      Actual results:

      
Seeing error in the logs showing : 

- error processing configuration change
- nb_candidate_commit_prepare: failed to validate candidate configuration

      Expected results:

      
WARNING message that an IP is filtered if it is a warning 
INFO message if it is not important
But no error message in the logs because potentially we are hitting a real bug here.

      Additional info:

      We believe the following JIRA are linked : 
https://issues.redhat.com/browse/OCPBUGS-18700
https://issues.redhat.com/browse/OCPBUGS-19053

            fpaoline@redhat.com Federico Paolinelli
            rhn-support-jpeyrard Johann Peyrard
            Gregory Kopels Gregory Kopels
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              Created:
              Updated: