If it is supported on kernel 22.214.171.124 then most likely it is supported in ZS 1.0beta12 as well.
Have you verified with dmesg, lsmod, “ifconfig -a” and lsusb if there are no modules and they are not loaded?
I have a similar problem. Posted a question in forum with tag “rndis” “load_balancing”.
Usb connection works and a can assign an address. The new interface exist ( I can ping it) but is not present in interface list on web virtualshell interface