concurrent connection over bluetooth 6lowpan

[Maciej]

Is it possible to connect more than one device over bluetooth to single router (Raspberry Pi 3 under archlinux)? I connect using commands:

echo "connect 00:4D:25:16:1A:52 1" > /sys/kernel/debug/bluetooth/6lowpan_control
echo "connect 00:C7:60:F6:3B:67 1" > /sys/kernel/debug/bluetooth/6lowpan_control

Connections are established. Last connected device has stable connection and I'm able to send packets from last device to router over UDP on Bluetooth (I'm using IoT SDK). But I'm not able to send any packet over first connection, the connection crashes during calling udp_sendto_ip6(). The function returns -4, what means Could not find route to destination address.

[Maciej]

I found solution for my problem. Between each connecting have to be some period of time for end of connecting process.

Here is solution:

echo "connect 00:4D:25:16:1A:52 1" > /sys/kernel/debug/bluetooth/6lowpan_control
sleep 2
echo "connect 00:C7:60:F6:3B:67 1" > /sys/kernel/debug/bluetooth/6lowpan_control

[Petter Myhre]

Thanks for sharing Maciej.