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  1. OpenShift Bugs
  2. OCPBUGS-62846

Installing dual stack SNO with primary IPv6 is blocked

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    • Quality / Stability / Reliability
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    • Approved
    • Installer Sprint 277
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    • Bug Fix
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      *Cause*: The installer did not permit IPv6 Primary DualStack installations on platforms designated as "None" or "External".
      *Consequence*: Users were unable to proceed with IPv6 Primary DualStack installations on these specific platform types, encountering an error or a configuration block.
      *Fix*: The installation process was modified to explicitly allow for IPv6 Primary DualStack configurations on "None" and "External" platforms.
      *Result*: The bug no longer presents, and users can now successfully install OpenShift with an IPv6 Primary DualStack network configuration on "None" and "External" platforms.
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      *Cause*: The installer did not permit IPv6 Primary DualStack installations on platforms designated as "None" or "External". *Consequence*: Users were unable to proceed with IPv6 Primary DualStack installations on these specific platform types, encountering an error or a configuration block. *Fix*: The installation process was modified to explicitly allow for IPv6 Primary DualStack configurations on "None" and "External" platforms. *Result*: The bug no longer presents, and users can now successfully install OpenShift with an IPv6 Primary DualStack network configuration on "None" and "External" platforms.
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      This is a clone of issue OCPBUGS-62430. The following is the description of the original issue:
      —
      Description of problem:

      As part of the effort (https://issues.redhat.com/browse/MGMT-21864) to enable SNO dual-stack with primary IPv6 via IBI, we found that openshift/installer blocks 'none' platform installs when IPv6 is the primary stack (see https://github.com/openshift/installer/blob/main/pkg/types/validation/installconfig.go#L365 where allowV6Primary is not set to true). This currently prevents installing primary-IPv6 dual-stack SNOs, and we have a customer waiting for it.

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

      4.19

      How reproducible:

      100%

      Steps to Reproduce:

      11 Use OpenShift Installer to install dual-stack with primary IPv6 SNO.

      Actual results (example):

      msg=failed to fetch Master Machines: failed to load asset "Install Config": failed to create install config: invalid "install-config.yaml" file: [networking.machineNetwork: Invalid value: "1001:db9::/120, 192.168.127.0/24": IPv4 addresses must be listed before IPv6 addresses, networking.serviceNetwork: Invalid value: "fd02::/112, 172.30.0 <TRUNCATED>: exit status 3

      Expected results:

      Successful installation

              sdasu@redhat.com Sandhya Dasu
              alkaplan@redhat.com Alona Paz
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              Gaoyun Pei Gaoyun Pei
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                Created:
                Updated: