Usb to ethernet adapter

I was using a usb to ethernet adapter to have my ROON ROCK directly connected to a dCS Network Bridge, avoiding a switch in the line (from ROCK to DAC in my case D440 Expert monos)
Worked flawlessly but when trying the same configuration but with ethernet out from the ROCK to the Devialet the D440 isn’t seen.
Is this a change due to the latest update or?
The former case was ethernet into the adapter, adapter into the ROCK, ethernet out to the Bridge then AES out to the Devialet. System saw output and worked but with ethernet out from the ROCK directly into the Devialet, the system doesn’t see the output
Any thoughts are welcome