Hi scub work most weekends so not on. First of all you have to start from beginning.
In the router delete any ip that you have assigned box.
Reflash the box with latest image. Latest and original zip file can be got from openvix download page make sure it's for duo.
I'm sure you know how to flash but here goes anyway.
Format usb sick fat 32
Unzip the duo zip file.
The vuplus file now appears.
Open up the usb on computer screen.
Drag the vuplus file onto it.
Remove the usb from computer.
Make sure vu duo is powered off at switch.
Insert front usb port and make sure no other usb connected to rear ports.
Switch on vu duo and follow the instructions at front of the box. Should say something like start, programming, reading, finished, then remove usb.
Use the vix wizard.
Leave dhcp on.
If you want help for settings we can change these later no problem.
Don't try to reload old settings onto box.
You can download channel lists from site if you don't want to do a scan.
If box doesn't show internet connection reboot box and router.
You can use dcc or vucc or putty for instance to connect to box from here.
As I said before delete dcc you are using and reinstall it if that's what you want to use. hth
If you follow this the box should connect.