diff --git a/tcp_tests/templates/underlay/virtual-mcp10-ovs--user-data1604.yaml b/tcp_tests/templates/underlay/virtual-mcp10-ovs--user-data1604.yaml
index dc7fe5d..1013571 100644
--- a/tcp_tests/templates/underlay/virtual-mcp10-ovs--user-data1604.yaml
+++ b/tcp_tests/templates/underlay/virtual-mcp10-ovs--user-data1604.yaml
@@ -93,4 +93,6 @@
      content: |
           auto ens3
           iface ens3 inet dhcp
+          auto ens4
+          iface ens4 inet dhcp