diff --git a/tempest/tempest_ext.conf b/tempest/tempest_ext.conf
index d4777f2..cc28635 100644
--- a/tempest/tempest_ext.conf
+++ b/tempest/tempest_ext.conf
@@ -26,8 +26,8 @@
 endpoint_type = internal
 instance_type = m1.tiny
 minimal_instance_type = m1.tiny
-network_for_ssh = net_name
-floating_network_name = net_name
+network_for_ssh = ${PUBLIC_NET}
+floating_network_name = ${PUBLIC_NET}
 fixed_subnet_name = ${FIXED_SUBNET_NAME}
 disable_ssl_certificate_validation = True
 image_ref = ${IMAGE_REF2}