Does This Actually Work For Anyone?

[bonzo72]

I've been 'round and 'round with this issue for days. I have a new, out of box, QNAP UC5G1T and it does show link/activity lights when connected but the host shows Disconnected everywhere in the software.

I have carefully followed this:
https://xcp-ng.org/docs/hardware.html#unlisted-hardware

Spent a hell of a lot of time with this:
https://ericeikrem.com/xenserver-lab-setup-usb-nic/#forgetnics

And finally ended up here, where, still naively holding out hope that there was an actual working procedure for this, I was once again disappointed. In fact, absolutely NOTHING changed in regards to the outcome, regardless what method I chose.

I first do a clean installation of 8.2.1 and install the latest pool patches on the host via XO. I have done this with the UC5G1T attached and with attaching it after.
Then I install the aqc111u driver, using the various methods that are available. Yum, the rpm from this repository, etc. And rebooting when instructed, extra times, for good measure and there has been no difference between the methods and the outcome.
I ALWAYS end up with this nonsense after a reboot:

uuid ( RO) : 3fa72220.....UUID
device ( RO): eth0
currently-attached ( RO): true
VLAN ( RO): -1
network-uuid ( RO): 7b15b....UUID

uuid ( RO) : 5bb1b112-.....UUID
device ( RO): side-2735-eth1
currently-attached ( RO): false
VLAN ( RO): -1
network-uuid ( RO): f1af4d0f......UUID

Changing the parameter in grub didn't help, adding the new udev did nothing and manually introducing the pif got me:

Could not find a network interface with the specified device name and MAC address.
device: eth1
mac: 24:5e.....MAC

So, I'm just curious if anyone actually got one of (any of!!!) these procedures to work? Or maybe I could be directed to one that works and told to stay away from xyz.
Thanks!