fix config

Change-Id: I08eff50fee4333e7ab190de8c5c9b4011b7b432d
diff --git a/p4-pod-configs/mwc-pod/mwc-demo.json b/p4-pod-configs/mwc-pod/mwc-demo.json
index c8e0386..e53acd4 100644
--- a/p4-pod-configs/mwc-pod/mwc-demo.json
+++ b/p4-pod-configs/mwc-pod/mwc-demo.json
@@ -102,7 +102,7 @@
         {
           "name": "leaf2-3/2-------mgmt-27---ARM",
           "ips": [
-            "150.0.0.254/254"
+            "150.0.0.254/24"
           ],
           "vlan-untagged": 150
         }