> Well given it supposedly works with a manually assigned IP, I suspect
> firmware isn't required for it to operate.
>
> I suspect a misconfigured DHCP server as the problem.
>
If i disabled "Address Reservation" on my router, then my network controller receive IP address from DHCP server scope. I have problem, when this option is active.
Thank you for your guidance, recently I try to install a test image, frequently by adding firmware.