@TheoZeFrench The answer is simple, you don't get more on the ER7206v1, the router doesn't have Hardware Offload, I had some ER7206v1 for 2-3 years ago but replaced them with the ER605V2 which had a...

@ITV I didn't fully understand the drawing, but I assume that there is no VLAN on the WAN. try turning off all the routers except one, the one that is on you have to restart. does it work then if...

@ITV ok, yes i'm out of ideas. but when you get onsite try connecting an er605 wan to the lan port on the er707. we can also rule out dns problems with er605, had there been a problem like yours...

@ITV I'm pretty sure you've run into the same problem I had. if I had to guess, you have an ER605 as the main router and a switch to which all the other ER605 are connected, I have not tested what...

@ITV this is becoming more and more of a mystery, can you describe how you wired up your workbench? If I have understood you correctly, there is still no problem with the ER707, only the ER605?

@ITV have you physically disconnected all routers from the network except 1, have you restarted the router? if there were problems with dns as you describe, the forum would be filled with messages...