Another related bug:
https://bugs.launchpad.net/ironic/+bug/1712228
Can you try the configuration that Tao Li mentions in the bug description? It could be the same issue.
Another related bug:
https:/ /bugs.launchpad .net/ironic/ +bug/1712228
Can you try the configuration that Tao Li mentions in the bug description? It could be the same issue.