Hello,
I have been working on your case there are some thing that i would like you to try:
Did you st up the definition of the THR_SERIAL_TUN_ROUTER to 1 in the config.h file ?
middleware\wireless\nwk_ip_<ver>\examples\host_controlled_device\config\config.h
#define THR_SERIAL_TUN_ROUTER 1
When you run the Thread_KW_Tun with a factory reset? (using 1 instead of 0)
sudo ./bin/Thread_KW_Tun /dev/ttyACM0 fslthr0 1 25
Are both of the devices (thc and router) on the same channel? (I see that the router could not get connected)
Could you please check your raspberry configuration, we have had some issues like yours but it was caused by their linux lack of permissions or some linux configuration.
I'll leave some screenshots of the result I got using Ubuntu 16.4.03
From the host controlled device:


From the router:


From the ubuntu terminal:

Best Regards,
Estephania