Odroid HC1 ethernet hangs

Hello all!

I used the following armbian image to write to an SD (I'm using an old odroid HC1 btw):

https://armbian.site-meganet.com/dl/odroidxu4/archive/

I used the bullseye_current image that was there. On the main download page it says that the file for Odroid XU4 is compatible with HC1, HC2 and MC1.

https://www.armbian.com/odroid-xu4/

My odroid HC1 boots ok but any attempt to use the built-in ethernet port results in an instant lock-up. Only way I can "get into" the device is with a USB ethernet adapter although even just issuing a command, eg ifconfig enx001e06366b84 192.168.1.99 locks everything up - even the USB ethernet adapter stopped working. I did check with ifconfig to find the relevent ethernet adapters'; names and two are listed.  

(The enx001e06366b84 name there is what the built-in ethernet adapters' name is btw).

Does anyone know why trying to use the inbuilt ethernet should lock the entire device up?

ljones