ICMP example detects RANDOM address as PUBLIC

RE: ICMP example detects RANDOM address as PUBLIC

gsalazar — Thu, 07 Jun 2018 13:56:36 GMT

I'll try to do that

RE: ICMP example detects RANDOM address as PUBLIC

Jørgen Holmefjord — Thu, 07 Jun 2018 13:50:29 GMT

If you could provide a sniffer trace, it would simplify debugging what is happening and why.

RE: ICMP example detects RANDOM address as PUBLIC

gsalazar — Thu, 07 Jun 2018 13:47:36 GMT

Not yet, but I used another setup and it detects it being a random address

RE: ICMP example detects RANDOM address as PUBLIC

Jørgen Holmefjord — Thu, 07 Jun 2018 13:39:17 GMT

Have you checked the on-air packets if the TxAdd bit is set, for instance using a sniffer? I would suspect this parameter to be decided by the softdevice based on this bit.

RE: ICMP example detects RANDOM address as PUBLIC

gsalazar — Thu, 07 Jun 2018 13:00:44 GMT

In the ble_6lowpan.c file, in line 1690 in the IPV6_EUI64_CREATE_FROM_EUI48 macro, the p_evt->p_evt_param->p_peer->addr_type has value 0 which corresponds to PUBLIC address when it should be 1 as RANDOM

RE: ICMP example detects RANDOM address as PUBLIC

Jørgen Holmefjord — Thu, 07 Jun 2018 12:33:24 GMT

Where are you checking the address on the DK? The bit TxAdd in the advertising PDU header should indicate if the address is public or private. I don't know how this is set on the Linux host side.

RE: ICMP example detects RANDOM address as PUBLIC

gsalazar — Thu, 07 Jun 2018 11:43:01 GMT

Hi Jørgen,

I don't think I made myself clear, I understand that the example appears with a PUBLIC address on the linux host, that is ok.

However the linux host has a RANDOM address and it is detected on the dev kit as a PUBLIC one, should it also use a PUBLIC address, do I need to set that bit also?

RE: ICMP example detects RANDOM address as PUBLIC

Jørgen Holmefjord — Thu, 07 Jun 2018 11:09:21 GMT

Hi,

Please have a look at this answer.

Best regards,
Jørgen