diff --git a/classes/cluster/virtual-mcp-ocata-ovs-ceph/openstack/compute.yml b/classes/cluster/virtual-mcp-ocata-ovs-ceph/openstack/compute.yml
index f16b77e..766c55f 100644
--- a/classes/cluster/virtual-mcp-ocata-ovs-ceph/openstack/compute.yml
+++ b/classes/cluster/virtual-mcp-ocata-ovs-ceph/openstack/compute.yml
@@ -15,7 +15,7 @@
     primary_interface: ens4
     tenant_interface: ens5
     external_interface: ens6
-    interface_mtu: 9000
+    interface_mtu: 1500
     linux_system_codename: xenial
   nova:
     compute: