IPv6 BLE router for Raspberry Pi

This script configures a Raspberry PI to act as IPv6 over BLE border router

Network Set up

            	  BLE                                        ETH                  		wifi
nrf5x   	--------------- RPI Border router        --------------- WIFI router --------------- PC
2001:db8::1        		2001:db8::2  2001:db9::1     					 2001:db9::2

BLE device set up

• Set up similar to the IPSP sample provided by Zephyr OS

Rpi Set up

• Install RADVD if not installed (to be done only once) sudo apt-get install radvd
• Configure RADVD -> open /etc/radvd.conf and paste#

interface bt0
{
    AdvSendAdvert on;
    prefix 2001:db8::/64
    {
        AdvOnLink off;
        AdvAutonomous on;
        AdvRouterAddr on;
    };
};

PC Set up

Assign static IPv6 address to the PC (use the wifi interface - not necessarily wlp4s0 on every device)

sudo ifconfig wlp4s0 add 2001:db9::2/64
# or
# sudo ip address add 2001:db9::2/64 dev wlp4s0

ping RPI from PC AFTER connecting the BLE device and the router

ping6 -I wlp4s0 2001:db9::1

Add route to the BLE device

sudo /sbin/ip -6 route add 2001:db8::/64 via 2001:db9::1

Disable the firewall of the PC. On Ubuntu this can be done with Gufw Firewall GUI.

Connect the BLE device and the router

Execute the blerouter script as sudo.

sudo ./blerouter.sh -d dev-name

Here dev-name is the name of the device to which we want to connect.

Testing

Ping the BLE device

ping6 -I wlp4s0 2001:db8::1

Send a udp packet to port 4242

echo "some data" > /dev/udp/2001:db8::1/4242