diff --git a/classes/cluster/virtual-mcp11-ovs/openstack/compute.yml b/classes/cluster/virtual-mcp11-ovs/openstack/compute.yml
index e1aec78..53f3daa 100644
--- a/classes/cluster/virtual-mcp11-ovs/openstack/compute.yml
+++ b/classes/cluster/virtual-mcp11-ovs/openstack/compute.yml
@@ -12,7 +12,7 @@
     primary_interface: ens4
     tenant_interface: ens5
     external_interface: ens6
-    interface_mtu: 9000
+    interface_mtu: 1500
     linux_system_codename: xenial
   nova:
     compute: