I have experienced difficulty getting the data from the radar scanner to reach the plugin. To get this the data into the plugin I did the following.
I have 3 interfaces
1) Radar scanner
2) Copper internet
Go to Control panel
-> Network and Internet
-> View network and sharing center.
On the left side chose change network settings.
You will see your network cards.
Right click om the network to the radar scanner and chose Properties.
Highlight Internet Protocol 4 and chose Properties.
Click on Advanced at the bottom right.
Unclick Automatic metric and give it a value of 2.
Then do the same with the next interface but give it a value of 3 and so on for the remaining interfaces.
The radar interface should be given the lowest number.
Then, in the "change network settings window" press ALT key.
This will reveal an extra menu with one button named Advanced.
click on that and chose Advanced settings.
Now highlight the interface to the radar scanner and move it to the top.
That will be all. Now the Radar interface should have the highest priority and the multacasting should work.