Fix bug 1167

Change-Id: Id0ea5f19d57d2214219eec8f59f13a378d61c870
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/n2vc/kubectl.py b/n2vc/kubectl.py
index 9d4ce57..61b2dc3 100644
--- a/n2vc/kubectl.py
+++ b/n2vc/kubectl.py
@@ -46,7 +46,9 @@
                             "target_port": p.target_port,
                         }
                         for p in i.spec.ports
-                    ],
+                    ]
+                    if i.spec.ports
+                    else [],
                     "external_ip": [i.ip for i in i.status.load_balancer.ingress]
                     if i.status.load_balancer.ingress
                     else None,