Comment 1 for bug 1785089

What is the generated undercloud-parameter-defaults.yaml (you can find it in the stack user home dir, or in the generated tarball by the end of undercloud deployment)? It should look like http://logs.openstack.org/18/589218/1/check/tripleo-ci-centos-7-undercloud-containers/21b7cda/logs/undercloud/home/zuul/undercloud-parameter-defaults.yaml.txt.gz

Does undercloud have its provisioning interface (it is likely eth1) included into br-ctlplane ovs bridge?

There had been a few containerized Ironic related fixes in tripleo heat templates master branch (Rocky), so you may want to retry with the latest t-h-t packages (once we have a promotion build with the recent t-h-t patches...).