diff --git a/tools/test/topos/bmv2-demo-cfg.json b/tools/test/topos/bmv2-demo-cfg.json
index 4ff2e0d..afdbf5b 100644
--- a/tools/test/topos/bmv2-demo-cfg.json
+++ b/tools/test/topos/bmv2-demo-cfg.json
@@ -7,42 +7,42 @@
     }
   },
   "devices": {
-    "bmv2:192.168.57.100:9090#11": {
+    "bmv2:192.168.123.4:9090#11": {
       "basic": {
         "name": "bmv2:11",
         "latitude": 40,
         "longitude": -107
       }
     },
-    "bmv2:192.168.57.100:9091#12": {
+    "bmv2:192.168.123.4:9091#12": {
       "basic": {
         "name": "bmv2:12",
         "latitude": 40,
         "longitude": -99
       }
     },
-    "bmv2:192.168.57.100:9092#13": {
+    "bmv2:192.168.123.4:9092#13": {
       "basic": {
         "name": "bmv2:13",
         "latitude": 40,
         "longitude": -91
       }
     },
-    "bmv2:192.168.57.100:9093#21": {
+    "bmv2:192.168.123.4:9093#21": {
       "basic": {
         "name": "bmv2:21",
         "latitude": 46,
         "longitude": -107
       }
     },
-    "bmv2:192.168.57.100:9094#22": {
+    "bmv2:192.168.123.4:9094#22": {
       "basic": {
         "name": "bmv2:22",
         "latitude": 46,
         "longitude": -99
       }
     },
-    "bmv2:192.168.57.100:9095#23": {
+    "bmv2:192.168.123.4:9095#23": {
       "basic": {
         "name": "bmv2:23",
         "latitude": 46,
@@ -51,83 +51,83 @@
     }
   },
   "links": {
-    "bmv2:192.168.57.100:9090#11/1-bmv2:192.168.57.100:9093#21/1": {
+    "bmv2:192.168.123.4:9090#11/1-bmv2:192.168.123.4:9093#21/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9093#21/1-bmv2:192.168.57.100:9090#11/1": {
+    "bmv2:192.168.123.4:9093#21/1-bmv2:192.168.123.4:9090#11/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9090#11/2-bmv2:192.168.57.100:9093#21/2": {
+    "bmv2:192.168.123.4:9090#11/2-bmv2:192.168.123.4:9093#21/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9093#21/2-bmv2:192.168.57.100:9090#11/2": {
+    "bmv2:192.168.123.4:9093#21/2-bmv2:192.168.123.4:9090#11/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9090#11/3-bmv2:192.168.57.100:9094#22/1": {
+    "bmv2:192.168.123.4:9090#11/3-bmv2:192.168.123.4:9094#22/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9094#22/1-bmv2:192.168.57.100:9090#11/3": {
+    "bmv2:192.168.123.4:9094#22/1-bmv2:192.168.123.4:9090#11/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9090#11/4-bmv2:192.168.57.100:9095#23/1": {
+    "bmv2:192.168.123.4:9090#11/4-bmv2:192.168.123.4:9095#23/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9095#23/1-bmv2:192.168.57.100:9090#11/4": {
+    "bmv2:192.168.123.4:9095#23/1-bmv2:192.168.123.4:9090#11/4": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9091#12/1-bmv2:192.168.57.100:9093#21/3": {
+    "bmv2:192.168.123.4:9091#12/1-bmv2:192.168.123.4:9093#21/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9093#21/3-bmv2:192.168.57.100:9091#12/1": {
+    "bmv2:192.168.123.4:9093#21/3-bmv2:192.168.123.4:9091#12/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9091#12/2-bmv2:192.168.57.100:9094#22/2": {
+    "bmv2:192.168.123.4:9091#12/2-bmv2:192.168.123.4:9094#22/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9094#22/2-bmv2:192.168.57.100:9091#12/2": {
+    "bmv2:192.168.123.4:9094#22/2-bmv2:192.168.123.4:9091#12/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9091#12/3-bmv2:192.168.57.100:9094#22/3": {
+    "bmv2:192.168.123.4:9091#12/3-bmv2:192.168.123.4:9094#22/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9094#22/3-bmv2:192.168.57.100:9091#12/3": {
+    "bmv2:192.168.123.4:9094#22/3-bmv2:192.168.123.4:9091#12/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9091#12/4-bmv2:192.168.57.100:9095#23/2": {
+    "bmv2:192.168.123.4:9091#12/4-bmv2:192.168.123.4:9095#23/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9095#23/2-bmv2:192.168.57.100:9091#12/4": {
+    "bmv2:192.168.123.4:9095#23/2-bmv2:192.168.123.4:9091#12/4": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9092#13/1-bmv2:192.168.57.100:9093#21/4": {
+    "bmv2:192.168.123.4:9092#13/1-bmv2:192.168.123.4:9093#21/4": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9093#21/4-bmv2:192.168.57.100:9092#13/1": {
+    "bmv2:192.168.123.4:9093#21/4-bmv2:192.168.123.4:9092#13/1": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9092#13/2-bmv2:192.168.57.100:9094#22/4": {
+    "bmv2:192.168.123.4:9092#13/2-bmv2:192.168.123.4:9094#22/4": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9094#22/4-bmv2:192.168.57.100:9092#13/2": {
+    "bmv2:192.168.123.4:9094#22/4-bmv2:192.168.123.4:9092#13/2": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9092#13/3-bmv2:192.168.57.100:9095#23/3": {
+    "bmv2:192.168.123.4:9092#13/3-bmv2:192.168.123.4:9095#23/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9095#23/3-bmv2:192.168.57.100:9092#13/3": {
+    "bmv2:192.168.123.4:9095#23/3-bmv2:192.168.123.4:9092#13/3": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9092#13/4-bmv2:192.168.57.100:9095#23/4": {
+    "bmv2:192.168.123.4:9092#13/4-bmv2:192.168.123.4:9095#23/4": {
       "basic": {}
     },
-    "bmv2:192.168.57.100:9095#23/4-bmv2:192.168.57.100:9092#13/4": {
+    "bmv2:192.168.123.4:9095#23/4-bmv2:192.168.123.4:9092#13/4": {
       "basic": {}
     }
   },
   "hosts": {
     "00:00:00:00:00:01/-1": {
       "basic": {
-        "location": "bmv2:192.168.57.100:9090#11/5",
+        "location": "bmv2:192.168.123.4:9090#11/5",
         "ips": [
           "10.0.0.1"
         ],
@@ -138,7 +138,7 @@
     },
     "00:00:00:00:00:02/-1": {
       "basic": {
-        "location": "bmv2:192.168.57.100:9091#12/5",
+        "location": "bmv2:192.168.123.4:9091#12/5",
         "ips": [
           "10.0.0.2"
         ],
@@ -149,7 +149,7 @@
     },
     "00:00:00:00:00:03/-1": {
       "basic": {
-        "location": "bmv2:192.168.57.100:9092#13/5",
+        "location": "bmv2:192.168.123.4:9092#13/5",
         "ips": [
           "10.0.0.3"
         ],