I have a similar setup and I connected the NetDuma R2 to the BT SmartHub and then in the SmartHub web interface, enabled the DMZ setting and selected the NetDuma as the DMZ device. I then reconfigured all network devices (laptop, PC etc.) to point to the NetDuma exclusively, basically using the SmartHub as a modem so to speak. If you do go down this avenue, you'll need to re-ip the SmartHub as the NetDuma and SmartHub can't be on the same network subnet due to routing, so I have my SmartHub on a 192.168.2.254/24 and my NetDuma on a 192.168.1.254/24. My BT internet is totally ass due to my location, 13 meg down, 1.5 meg up and I don't have any hit registration issues in this setup. Hope this helps.