Second M9 causes network failures when connected over Ethernet
I have just setup a network with a pair of M9 devices in my home.
The initial setup of the first M9 went without trouble, I moved it to AP mode and it is working as expected.
When I power on the second M9 node I can configure and connect it without problems over Wifi.
When I try to use a wired backhaul then I run into problems. The second M9 ends up causing the LAN to freeze up for all devices, the LED goes green for a moment and then it blinks red, restarts and cycles through that.
Is there a difference between the two NIC ports on the device?