![]() macOS Catalina's CDC NCM driver seems to work fine if the NCM function is part of a composite gadget. CDC NCM is an alternative Ethernet protocol. Specifically, the ECM driver no longer works if the ECM function is part of a USB composite device, but does work if the ECM function is the the only function in the USB device. Either way, the ECM driver in macOS Catalina no longer works with the configuration implemented by L4T/Jetson. Presumably Apple made significant code changes during this transition. ![]() ![]() macOS Catalina has replaced the driver for this protocol it used to be a kernel-based driver but is now a user-space driver. The Ethernet protocol that works with macOS (pre-Catalina) is known as USB CDC ECM (Communications Data Class Ethernet Control Model). L4T's USB device mode implements a variety of different functions in parallel, so is what's known as a USB composite device.
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