diff --git a/playbooks/kayobe-seed-upgrade-base/overrides.yml.j2 b/playbooks/kayobe-seed-upgrade-base/overrides.yml.j2
index f501782c5..c88b54808 100644
--- a/playbooks/kayobe-seed-upgrade-base/overrides.yml.j2
+++ b/playbooks/kayobe-seed-upgrade-base/overrides.yml.j2
@@ -14,6 +14,7 @@ kolla_ansible_source_url: "{{ ansible_env.PWD ~ '/' ~ zuul.projects['opendev.org
 kolla_ansible_source_version: "{{ zuul.projects['opendev.org/openstack/kolla-ansible'].checkout }}"
 pip_upper_constraints_file: "/tmp/upper-constraints.txt"
 {% endif %}
+kolla_openstack_logging_debug: True
 
 # NOTE(mgoddard): We're using a cirros image, which doesn't require the
 # resolv.conf work around used for CentOS.
@@ -22,3 +23,10 @@ overcloud_host_image_workaround_resolv_enabled: false
 # Use the CI infra's PyPI mirror.
 pip_local_mirror: true
 pip_index_url: "http://{{ zuul_site_mirror_fqdn }}/pypi/simple"
+
+# NOTE(mgoddard): CentOS 8 removes interfaces from their bridge during ifdown,
+# and removes the bridge if there are no interfaces left. When Kayobe bounces
+# veth links plugged into the bridge, it causes the bridge which has the IP we
+# are using for SSH to be removed. Use a dummy interface.
+aio_bridge_ports:
+  - dummy1
diff --git a/playbooks/kayobe-seed-upgrade-base/pre.yml b/playbooks/kayobe-seed-upgrade-base/pre.yml
index c38f7beb3..3d7c5af81 100644
--- a/playbooks/kayobe-seed-upgrade-base/pre.yml
+++ b/playbooks/kayobe-seed-upgrade-base/pre.yml
@@ -29,3 +29,11 @@
         - "ip l add breth1 type bridge"
         - "ip l set breth1 up"
         - "ip a add 192.168.33.5/24 dev breth1"
+        # NOTE(mgoddard): CentOS 8 removes interfaces from their bridge during
+        # ifdown, and removes the bridge if there are no interfaces left. When
+        # Kayobe bounces veth links plugged into the bridge, it causes the
+        # bridge which has the IP we are using for SSH to be removed. Use a
+        # dummy interface.
+        - "ip l add dummy1 type dummy"
+        - "ip l set dummy1 up"
+        - "ip l set dummy1 master breth1"
diff --git a/playbooks/kayobe-seed-vm-base/overrides.yml.j2 b/playbooks/kayobe-seed-vm-base/overrides.yml.j2
index 22061d14e..cb7594011 100644
--- a/playbooks/kayobe-seed-vm-base/overrides.yml.j2
+++ b/playbooks/kayobe-seed-vm-base/overrides.yml.j2
@@ -42,3 +42,10 @@ seed_vm_configdrive_device: disk
 # /etc/network/interfaces.
 configdrive_os_family: Debian
 configdrive_debian_network_interfaces_supports_glob: false
+
+# NOTE(mgoddard): CentOS 8 removes interfaces from their bridge during ifdown,
+# and removes the bridge if there are no interfaces left. When Kayobe bounces
+# veth links plugged into the bridge, it causes the bridge which has the IP we
+# are using for SSH to be removed. Use a dummy interface.
+aio_bridge_ports:
+  - dummy1