The docs for setting up multi-architecture clusters on IBM Z [1-5] currently contain a procedure to disable the UDP aggregation. This problem has been fixed and can be removed from the docs [6].

[1] https://docs.openshift.com/container-platform/4.17/post_installation_configuration/configuring-multi-arch-compute-machines/creating-multi-arch-compute-nodes-ibm-z.html
[2] https://github.com/openshift/openshift-docs/blob/ce17decb6aa1e7140a12ee6ec104f14c6d5ea228/modules/machine-user-infra-machines-ibm-z.adoc?plain=1#L16-L41

[3] https://docs.openshift.com/container-platform/4.17/post_installation_configuration/configuring-multi-arch-compute-machines/creating-multi-arch-compute-nodes-ibm-z-lpar.html

[4] https://docs.openshift.com/container-platform/4.17/post_installation_configuration/configuring-multi-arch-compute-machines/creating-multi-arch-compute-nodes-ibm-z-kvm.html
[5] https://github.com/openshift/openshift-docs/blob/ce17decb6aa1e7140a12ee6ec104f14c6d5ea228/modules/machine-user-infra-machines-ibm-z-kvm.adoc?plain=1#L18-L43

[6] https://github.com/openshift/cluster-network-operator/pull/2331
[7] https://issues.redhat.com/browse/OCPBUGS-2532
[8] https://issues.redhat.com/browse/MULTIARCH-4632

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