Reapply "OCPBUGS-55506: Prevent startup failures due to name resolution"

[rfredette]

This reverts commit ac22e22.

[openshift-ci-robot]

@rfredette: This pull request references Jira Issue OCPBUGS-55506, which is valid. The bug has been moved to the POST state.

3 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.21.0) matches configured target version for branch (4.21.0)
• bug is in the state ASSIGNED, which is one of the valid states (NEW, ASSIGNED, POST)

No GitHub users were found matching the public email listed for the QA contact in Jira (iamin@redhat.com), skipping review request.

The bug has been updated to refer to the pull request using the external bug tracker.

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In response to this:

This reverts commit ac22e22.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[candita]

Just adding a hold so it doesn't get merged accidentally.
/hold

[rhamini3]

Verified using same reproducing method on clusterversion: 4.20.0-0-2025-09-26-152646-test-ci-ln-s4t5v7b-latest

Router logs show no error and router pods are successfully recreated after being deleted

I0926 17:15:59.232866       1 router.go:665] "msg"="router reloaded" "logger"="template" "output"=" - Checking http://localhost:80 using PROXY protocol ...\n - Health check ok : 0 retry attempt(s).\n"

/verified by rhamini3

[openshift-ci-robot]

@rhamini3: This PR has been marked as verified by rhamini3.

Details

In response to this:

Verified using same reproducing method on clusterversion: 4.20.0-0-2025-09-26-152646-test-ci-ln-s4t5v7b-latest

Router logs show no error and router pods are successfully recreated after being deleted

I0926 17:15:59.232866       1 router.go:665] "msg"="router reloaded" "logger"="template" "output"=" - Checking http://localhost:80 using PROXY protocol ...\n - Health check ok : 0 retry attempt(s).\n"

/verified by rhamini3

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[rohara]

/retest

[openshift-ci]

@rfredette: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-serial	6c4ca66	link	true	/test e2e-aws-serial
ci/prow/e2e-metal-ipi-ovn-router	6c4ca66	link	false	/test e2e-metal-ipi-ovn-router
ci/prow/okd-scos-e2e-aws-ovn	6c4ca66	link	false	/test okd-scos-e2e-aws-ovn

Full PR test history. Your PR dashboard.

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[openshift-bot]

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

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