Layer 2 is not supported in the TOSIBOX® Key client when installed on macOS Big Sur (version 11 and newer) running on ARM processor and possibly in the future versions for other processor architectures, where enabling Layer 2 support requires accepting a kernel extension signed by Jonathan Bullard.


This has no effect on Layer 3 support in the TOSIBOX® Key client when installed on macOS Big Sur (version 11 and newer) running on ARM processor.