Unable to Passthrough Yubikey from macOS

[howyay]

I was trying to use the host example on macOS Sonoma to passthrough my Yubikey to my Linux machine - I was able to get the device attached, and it shows up in lsusb on the remote Linux usbip client.

However, when I try to use it for SSH (FIDO) or log into websites (WebAuthn), they don't seem to think that my Yubikey is present. On the server end, I can see the following log entry endlessly repeating:

[2024-07-05T03:11:57Z DEBUG usbip::host] To host device: ep=UsbEndpoint { address: 129, attributes: 3, max_packet_size: 8, interval: 10 } setup=SetupPacket { request_type: 0, request: 0, value: 0, index: 0, length: 0 } req=[]

(with minor variations in the parameters)

I'm not sure how to debug it further, please advise, and thank you for your time!

[jiegec]

Weird, why does it send an empty setup packet?