I can't disconnect the router from the board

[embo san]

I'm trying out 6lowpan examples in the IoT SDK, and while everything works, if I want to disconnect by running:

echo "disconnect 00:50:49:71:3b:44 1" > /sys/kernel/debug/bluetooth/6lowpan_control

I get :

$ bash: echo: write error: No such file or directory

[Petter Myhre]

What about:

echo "disconnect 00:50:49:71:3b:44" > /sys/kernel/debug/bluetooth/6lowpan_control

[embo san]

if I do that, I get no error, the LED1 turns ON, and LED2 starts blinking, which in documentation means: "BLE link established, IPv6 interface down.", if I enter "hcitool con" I still see two connections, but at least something happened