RE: Ping problem

arfhamza — Fri, 08 Mar 2019 16:26:00 GMT

Hello Sir, thank you for your reply.

The mac adress is "00:21:12:A7:AF:6A"
i tried pinging using "fe80::21:12ff:fea7:af6a and fe80::221:12ff:fea7:af6a"
But the result remains the same.

i guess the problem is that i was using the commands

" ifconfig bt0 add 2001:db8::1/64"
" /etc/init.d/radvd restart"

before connecting the device and not after.
I will try it as soon as i get to my office.

Thank you so much for your help sir !

RE: Ping problem

Stian Røed Hafskjold — Fri, 08 Mar 2019 16:16:02 GMT

Make sure you have radvd installed and configured:

sudo apt install radvd

Save this config file to the /etc/ folder:

devzone.nordicsemi.com/.../radvd.conf

Then execute these commands as root (write sudo -i to get root privileges)

      modprobe bluetooth-6lowpan
      echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
      echo 1 > /sys/kernel/debug/bluetooth/6lowpan_enable
      echo "connect XX:XX:XX:XX:XX:XX 1" > /sys/kernel/debug/bluetooth/6lowpan_control
      ifconfig bt0 add 2001:db8::1/64
      /etc/init.d/radvd restart

You should now see that the bt0 interface has a 2001:db8::1/64 ip using ifconfig.

Translate the MAC address to ipv6 address this way

AA:BB:CC:DD:EE:FF = 2BB:CCff:feDD:EEFF

then to ping with global prefix:

ping6 2001:db8::2BB:CCff:feDD:EEFF

or to ping link local:

ping6 fe80::2BB:CCff:feDD:EEFF

Looking at the way you translated the MAC address into ipv6, fe80::21:12ff:fea7:af6a, I think maybe you should write 201 instead of 21? What is the MAC address?