We have a target connecting to Windows over RNDIS. After starting io-usb usbdnet is started using
mount -Tio-pkt1 -o mac=001422E010203,usbdnet_mac=00142210204,protocol=rndis devnp-usbdnet.so

This in turn creates rndis0 interface that can be provisioned with IP/netmask. 

What is a simple way to detect cable connection/disconnection to rndis port? Does QNX provide some sought of 
notification?