tmm@mcci.com said:
> It's in the Common Class specification,  http://www.usb.org/developers/
> devclass_docs/usbccs10.pdf, section  3.10 (pp numbered 6 & 7) 

Thanks, that also encourages me to commit my separation of
device and interface attachment. It seems that is the right way.

> Did you post descriptors for the good device and the bad device (I 
> might have missed them)?

I didn't - I don't have any of them.
Steven just posted a dump for the "bad" one. (assuming that
the bluetooth one came later and is guilty of reusing the vid/did)
There was no report about the Belkin Ethernet adapter so far.

Actually, there is the vague chance that the "bcdDevice"
revision number differs which would allow a separation
conforming to the CCS, but since there is a 1.0 in the
bluetooth dev, I'm in doubt.

best regards
Matthias