diff --git a/p4app/controller.py b/p4app/controller.py
index 4c027b5..c073fa5 100644
--- a/p4app/controller.py
+++ b/p4app/controller.py
@@ -91,6 +91,7 @@ class L2Controller(object):
 
         # https://en.wikipedia.org/wiki/Solicited-node_multicast_address
         ndp_prefix = "ff02::1:ff00:0/104"
+        ndp_prefix = "ffff:ffff:ffff:ffff:ffff:ffff:ff00:0/104"
 
         all_ports = range(1,5)
         # create multicast nodes