I'm working on the development of Thread with version v1.0.0.
I have two Kw22s and both are REED.
When the network had been created, I sent THCI command "NWKU_CoapSendRequest" from leader to end device.
Once leader received the ack with payload, it crashed. I have to reboot to recover.
The attributes of NWKU_CoapSendRequest I used are shown as below
TCHI command: NWKU_CoapSendRequest
Please refer to attach for more details,
Thank a lot