I am trying to test out all aspects of the network security configuration capability of the N Developer Preview. I have most of it working, but I am stumped by the self-sign
This appears to be working on N Developer Preview 2, using the example.crt generated by the openssl scripts shown in the question. For the moment, I am going to assume that there was a change in N Developer Preview 2 compared to N Developer Preview 1 that accounts for the change.