diff --git a/vmware_nsxlib/v3/nsx_constants.py b/vmware_nsxlib/v3/nsx_constants.py
index be7c300a..96b301ff 100644
--- a/vmware_nsxlib/v3/nsx_constants.py
+++ b/vmware_nsxlib/v3/nsx_constants.py
@@ -114,6 +114,8 @@ LOGGING = 'logging'
 
 # Allowed address pairs
 NUM_ALLOWED_IP_ADDRESSES = 128
+NUM_ALLOWED_IP_ADDRESSES_v4 = NUM_ALLOWED_IP_ADDRESSES
+NUM_ALLOWED_IP_ADDRESSES_v6 = 16
 MAX_STATIC_ROUTES = 26
 
 # QoS directions egress/ingress