diff --git a/tests/roles/bootstrap-host/templates/user_variables.aio.yml.j2 b/tests/roles/bootstrap-host/templates/user_variables.aio.yml.j2
index 4008fbdb05..6a45593fd5 100644
--- a/tests/roles/bootstrap-host/templates/user_variables.aio.yml.j2
+++ b/tests/roles/bootstrap-host/templates/user_variables.aio.yml.j2
@@ -274,7 +274,7 @@ openstack_hosts_package_state: latest
 octavia_v2: True
 # Disable Octavia V1 API
 octavia_v1: False
-octavia_management_net_subnet_cidr: "{{ (bootstrap_host_container_tech == 'nspawn') | ternary('172.29.240.0/22', '172.29.252.0/22') }}"
+octavia_management_net_subnet_cidr: "{{ (bootstrap_host_container_tech == 'nspawn') | ternary('172.29.240.0/22', '172.29.232.0/22') }}"
 tempest_run_concurrency: 0
 {% endif %}