Comment 17 for bug 1958116

The ctlplane_gateway_ip ansible var is set correctly, and the portmap has it:

https://logserver.rdoproject.org/46/35646/73/check/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp-featureset035-victoria/84aa1f2/logs/undercloud/home/zuul/config-download/config-download-latest/group_vars/Controller.gz

ctlplane_gateway_ip: 192.168.24.1

deployed_server_port_map:
  overcloud-controller-0-ctlplane:
    fixed_ips:
    - ip_address: 192.168.24.24
    network:
      mtu: 1350
      tags:
      - 192.168.24.0/24
    subnets:
    - cidr: 192.168.24.0/24
      dns_nameservers:
      - 208.67.222.222
      - 208.67.220.220
      gateway_ip: 192.168.24.1
      host_routes: []

The network config used is:
tripleo_network_config_template: templates/ci/multiple_nics_ipv6.j2

The Victoria template does not set a route on the ctlplane interface:

https://opendev.org/openstack/tripleo-ansible/src/branch/stable/victoria/tripleo_ansible/roles/tripleo_network_config/templates/ci/multiple_nics_ipv6.j2

Wallaby does:
https://opendev.org/openstack/tripleo-ansible/src/branch/stable/wallaby/tripleo_ansible/roles/tripleo_network_config/templates/ci/multiple_nics_ipv6.j2

We need to backport this change:
https://opendev.org/openstack/tripleo-ansible/commit/c05bf0b042b2e2c008bff555c5b37265c4e2b69f