Description of problem:
[sig-auth] [Feature:NodeAuthenticator] The kubelet can delegate ServiceAccount tokens to the API server
[sig-auth] [Feature:NodeAuthenticator] The kubelet's main port 10250 should reject requests with no credentials

tests are failing in IPv6.

Version-Release number of selected component (if applicable):
4.8+

How reproducible:
Run e2e-metal-ipi-ovn-ipv6 by enabling these 2 tests.

Actual results:
Tests are getting error;

Err: {
            s: "error running /usr/local/bin/kubectl --server=https://api.ostest.test.metalkube.org:6443 --kubeconfig=ocp/ostest/auth/kubeconfig --namespace=e2e-node-authn-205 exec agnhost-pod -- /bin/sh -x -c curl -sIk -o /dev/null -w '%{http_code}' --header \"Authorization: Bearer `cat /var/run/secrets/kubernetes.io/serviceaccount/token`\" https://fd2e:6f44:5dd8:c956::14:10250/metrics:\nCommand stdout:\n000\nstderr:\n+ cat /var/run/secrets/kubernetes.io/serviceaccount/token\n+ curl -sIk -o /dev/null -w '%{http_code}' --header 'Authorization: Bearer XXXXXXXX https://fd2e:6f44:5dd8:c956::14:10250/metrics\ncommand terminated with exit code 3\n\nerror:\nexit status 3",
        },
        Code: 3,
    }


Expected results:
Tests are passing in IPv6 configuration.

Additional info:

This is a bug in upstream.