i finally successfully build a rig with 9 rx 560 and 2 rx 570 on simpleminingos.
I tried everything home, and everything was up and running.

Now i moved to the place where i wanted to mine.

First, when i connected everything, my mobo didnt start up. I removed all gpus and started. It started but all my bios settings where gone (like gen2 and above 4g decoding).
I changed everything and restarted with all my gpu's.

It booted perfectly.
But know i am getting this:
trying connect simplemining.net...
https://ibb.co/fXsGKv

Then the miner starts. And yeah its clear that it cant connect...
https://ibb.co/mDvE6a

When i look at my mobo, i can see that my ethernet port is blinking red. I think that means smt is wrong...
https://ibb.co/bSGMma

I disconnected my board and connected the cable to a computer. It had a connection. I changed the cable and checked again. Its working.
So i connected it to the board and the same error...

The connection is coming from a router. And its the 2nd device that's connected.
Is there a way to check the connection on the OS. Or what to do in that case.... need some help