Comment 5 for bug 1983817

This issue is ongoing today with examples from all the lines.

Master [1] Wallaby/9 [2] and Train/8 [3] (only one example in [3])

As before the jobs are in status RETRY with typical runtime of ~8 mins before the error hits

Example from [4]

2022-08-09 01:54:37.052925 | primary | Errors during downloading metadata for repository 'baseos':
2022-08-09 01:54:37.052967 | primary | - Curl error (6): Couldn't resolve host name for http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/centos-stream/9-stream/BaseOS/x86_64/os/repodata/repomd.xml [Could not resolve host: mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org]
2022-08-09 01:54:37.053008 | primary | Error: Failed to download metadata for repo 'baseos': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

[1] https://review.rdoproject.org/zuul/buildset/c9e4fb9c8c8043e9bcd5e7690908ecd3
[2] https://review.rdoproject.org/zuul/buildset/a1734cf8868f414ca292564e74c570ba
[3] https://review.rdoproject.org/zuul/buildset/946a0f57002b42849e09c27efe101e99
[4] https://logserver.rdoproject.org/openstack-periodic-integration-main/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-9-ovb-3ctlr_1comp_1supp-featureset064-master/001daa6/job-output.txt