diff --git a/tools/test/cells/simon-single b/tools/test/cells/simon-single
index 8486fa8..98913dc 100644
--- a/tools/test/cells/simon-single
+++ b/tools/test/cells/simon-single
@@ -1,7 +1,7 @@
 # Local VirtualBox-based single ONOS instance & ONOS mininet box
 
 export ONOS_NIC=192.168.56.*
-export OC1="192.168.56.101"
-export OCN="192.168.56.103"
+export OC1="192.168.56.1"
+export OCN="192.168.56.99"
 
 export ONOS_APPS="drivers,openflow,drivermatrix"