oh, and `modprobe g_ether` fails:

```
# modprobe g_ether
g_ether musb-hdrc.0: failed to start g_ether: -2
g_ether musb-hdrc.0: failed to start g_ether: -2
modprobe: can't load module g_ether (kernel/drivers/usb/gadget/legacy/g_ether.ko): unknown symbol in module, or unknown parameter
```