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d2387bed16
Automatic merge from submit-queue (batch tested with PRs 66138, 65951). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Don't validate HealthzBindAddress in KubeProxyConfiguration if it's empty **What this PR does / why we need it**: https://github.com/kubernetes/kubernetes/pull/49087 added validation for the HealthzBindAddress field in the KubeProxyConfiguration, but if you pass in --healthz-port=0 to the kube-proxy CLI, it sets this field to the empty string. However, an empty string is not a valid value for this field. This change allows validation to pass if HealthzBindAddress is empty. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Ref #65118 **Special notes for your reviewer**: **Release note**: ```release-note Fix validation for HealthzBindAddress in kube-proxy when --healthz-port is set to 0 ```