Media Server not visible on wired LAN

Hi All

I have a problem in that my Media Server (MiniDLNA on Ubuntu) is only visible on the Wireless LAN. When I disable the wireless interface on MiniDLNA and only have the wired network enabled, I cannot access the Media server through Volumio (Version 3 with Virtuoso subscription), though I had the same issue on Version 2).

I have tested my MiniDLNA wired connection with my Yamaha device and it is configured correctly.

Any idea?

Thank you.