Ping the boards from PC via RasPi Router using IoT 6lowpan via BLE CoAP example

[embo san]

I have followed the CoAP example from IoT SDK, I have a Raspberry PI set up as the router, and two nRF52 boards, one is the client, the other is the server.

Following instructions I manage to change LEDs (on/off) of the server, by pressing the buttons on the client.

But now I'm trying to use the client from my PC (Windows) using Mozilla's CoAP client implementation, and although I navigate to correct path, I don't see the lights led3 and led4 there, as they're shown in the example image.

Also if I try to ping from my PC, the client or the server board I cannot do it, what seems to be the problem?

##update 1

Here is the info:

radvd.conf

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

ifconfig

bt0       Link encap:UNSPEC  HWaddr 00-1A-7D-FF-FE-DA-71-08-00-00-00-00-00-00-00-00
          inet6 addr: 2001:db8::1/64 Scope:Global
          inet6 addr: 2001:db8::21a:7dff:feda:7108/64 Scope:Global
          inet6 addr: fe80::21a:7dff:feda:7108/64 Scope:Link
          UP POINTOPOINT RUNNING MULTICAST  MTU:1280  Metric:1
          RX packets:21 errors:0 dropped:0 overruns:0 frame:0
          TX packets:65 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:1661 (1.6 KiB)  TX bytes:4523 (4.4 KiB)

eth0      Link encap:Ethernet  HWaddr b8:27:eb:f4:dd:1e
          inet addr:192.168.11.221  Bcast:192.168.11.255  Mask:255.255.255.0
          inet6 addr: fe80::1d1d:8327:1679:29ec/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1128702 errors:0 dropped:4238 overruns:0 frame:0
          TX packets:41571 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:175303947 (167.1 MiB)  TX bytes:7370884 (7.0 MiB)

route -A inet6

Kernel IPv6 routing table
Destination                    Next Hop                   Flag Met Ref Use If
::1/128                        ::                         U    256 0     0 lo
2001::/64                      ::                         U    1   0     0 eth0
2001:db8::/64                  ::                         U    256 1    18 bt0
fe80::/64                      ::                         U    256 1   109 eth0
fe80::/64                      ::                         U    256 1     8 bt0
::/0                           ::                         !n   -1  1   500 lo
::1/128                        ::                         Un   0   2    12 lo
2001:db8::/128                 ::                         Un   0   1     0 lo
2001:db8::1/128                ::                         Un   0   2    15 lo
2001:db8::21a:7dff:feda:7108/128 ::                         Un   0   1     0 lo
fe80::/128                     ::                         Un   0   1     0 lo
fe80::/128                     ::                         Un   0   1     0 lo
fe80::21a:7dff:feda:7108/128   ::                         Un   0   1     0 lo
fe80::1d1d:8327:1679:29ec/128  ::                         Un   0   2   164 lo
ff00::/8                       ::                         U    256 1117832 eth0
ff00::/8                       ::                         U    256 1    15 bt0
::/0                           ::                         !n   -1  1   500 lo

Server board:

fe80::250:46ff:fe72:2b55  - nrf52 SERVER
echo "connect 00:50:46:72:2b:55 1" > /sys/kernel/debug/bluetooth/6lowpan_control
00:50:46:72:2b:55 - BT address
2001:db8::250:46ff:fe72:2b55 - GLOBAL

Client board:

00:a9:c1:b9:f1:9f - nrf52 (other board) BT Address CLIENT
echo "connect 00:a9:c1:b9:f1:9f 1" > /sys/kernel/debug/bluetooth/6lowpan_control
ping6 -I bt0 fe80::2a9:c1ff:feb9:f19f
2001:db8::2a9:c1ff:feb9:f19f

If I do ping6 2001:db8::250:46ff:fe72:2b55 or ping6 -I bt0 fe80::250:46ff:fe72:2b55 from the RasPi, I can ping the server, also same goes for the client

If enter from my Windows PC: ping -6 fe80::1d1d:8327:1679:29ec (eth0 RasPi address) it works, but if I try to ping the server from PC like this: ping -6 2001:db8::250:46ff:fe72:2b55 it fails

[Jørgen Holmefjord]

Hi,

Do you have IPv6 connection between your Windows computer and the RaspberryPi?

Best regards,

Jørgen

[embo san]

Hi Jørgen,

fe80::1d1d:8327:1679:29ec is the address eth0 (RasPi)

if I enter from my Windows PC: ping -6 fe80::1d1d:8327:1679:29ec

I get the response, and I can't seem to ping ipv6.google.com neither from my pc or pi, what do you recommend me to do?

I have also edited the question, with more info

[Jørgen Holmefjord]

It does not look like your eth0 interface has a global address. You need to setup RADVD to give a prefix to this interface as well. Take a look at this answer, which explains how to do this.

[embo san]

Thanks, will check it out