Well, a little poking around reveals that the HG20f9 USB-to-ethernet
gizmo, although it uses a Linksys VID (0x066b), isn't a Linksys product
at all.
Rather, it's a Chinese-origin device that uses the ASX88772B chip from
Asix. The 0x20f9 PID doesn't appear to conflict with any existing
Linksys device, so it appears that I'll be okay by simply adding the
PID/VID pair to the existing AXE driver for OpenBSD.
There's an interesting approach to the costly problem of purchasing a
VID license from USB-IF--just steal someone else's! Who's gonna know?
Now why didn't I think of that?
--CHuck