Comment 3 for bug 1774898

Aye, could it be that since we are deploying ipv6 overcloud, the containerized undercloud is missing some ipv4 rules? From https://logs.rdoproject.org/16/566916/11/openstack-check/gate-tripleo-ci-centos-7-ovb-3ctlr_1comp-featureset035-master/Zb3297f9fb4a44a10b34f7afa1b9e860d/undercloud/var/log/host_info.txt.gz I see no single 53 dns packet rule allowing packets to go through.