diff --git a/tcp_tests/templates/heat-cicd-pike-contrail-stb-sl/underlay-userdata.yaml b/tcp_tests/templates/heat-cicd-pike-contrail-stb-sl/underlay-userdata.yaml
index a0ddfdd..4d8b30f 100755
--- a/tcp_tests/templates/heat-cicd-pike-contrail-stb-sl/underlay-userdata.yaml
+++ b/tcp_tests/templates/heat-cicd-pike-contrail-stb-sl/underlay-userdata.yaml
@@ -1,5 +1,6 @@
 #cloud-config, see http://cloudinit.readthedocs.io/en/latest/topics/examples.html
 
+fqdn: $node_hostname.$node_domain
 ssh_pwauth: True
 users:
    - name: root