nRFConnect IPSP example global address unreachable

[Ros]

Hi,

I am trying to run IPSP example from nRF Connect SDK 1.4.2 IPSP sample (v1.4.2\zephyr\samples\bluetooth\ipsp). The "ping6 -I bt0 ff02::1" command is working fine but when ping with global address (ping6 2001:db8::1) the address is not reachable. A tshark running listening to the interface is shows the following ouput.

    1 0.000000000  2001:db8::2 → ff02::1:ff00:1 ICMPv6 88 Neighbor Solicitation for 2001:db8::1 from b8:27:eb:0e:08:ee
    2 0.131473749 fe80::b827:ebff:fe0e:8ee → ff02::1      ICMPv6 112 Router Advertisement from b8:27:eb:0e:08:ee
    3 1.040010103  2001:db8::2 → ff02::1:ff00:1 ICMPv6 88 Neighbor Solicitation for 2001:db8::1 from b8:27:eb:0e:08:ee
    4 2.080778199  2001:db8::2 → ff02::1:ff00:1 ICMPv6 88 Neighbor Solicitation for 2001:db8::1 from b8:27:eb:0e:08:ee
    5 3.120007311  2001:db8::2 → ff02::1:ff00:1 ICMPv6 88 Neighbor Solicitation for 2001:db8::1 from b8:27:eb:0e:08:ee
    6 4.160005417  2001:db8::2 → ff02::1:ff00:1 ICMPv6 88 Neighbor Solicitation for 2001:db8::1 from b8:27:eb:0e:08:ee

How can I debug the issue? No modifications from the example and using nRF52 DK, Linux kernel version is higher than 4.2 (Linux raspberrypi 5.4.79+) so the workaround CONFIG_NET_L2_BT_ZEP1656 has no effect.

The serial port output is given below:

*** Booting Zephyr OS build v2.4.0-ncs2  ***
[00:00:00.013,488] <inf> sdc_hci_driver: SoftDevice Controller build revision:
cf 5c 0f 11 88 9c d7 02  15 27 c7 c3 ca 60 19 85 |.\...... .'...`..
b7 c4 50 e3                                      |..P.
[00:00:00.016,113] <inf> bt_hci_core: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.016,143] <inf> bt_hci_core: HW Variant: nRF52x (0x0002)
[00:00:00.016,143] <inf> bt_hci_core: Firmware: Standard Bluetooth controller (0x00) Version 207.3932 Build 3617359889
[00:00:00.017,181] <inf> bt_hci_core: Identity: dd:63:f7:14:08:e3 (random)
[00:00:00.017,181] <inf> bt_hci_core: HCI: version 5.2 (0x0b) revision 0x1123, manufacturer 0x0059
[00:00:00.017,181] <inf> bt_hci_core: LMP: version 5.2 (0x0b) subver 0x1123
[00:00:15.437,683] <wrn> bt_hci_core: opcode 0x200a status 0x09
[00:00:15.723,663] <inf> ipsp: Run IPSP sample
[00:00:15.723,907] <inf> ipsp: Starting to wait

[JONATHAN LL]

Hi Ras,

I will have to test and see fi i can reproduce the issue, dont have any recommendations as of now.

PS: If you have had any progress of found a solution pleas share\update so that anyone that finds this post might find it helpful :) 
Regards,
Jonathan

[Ros]

Do you find the problem?