RE: Can nRF Sniffer do Bluetooth Mesh packet decryption?

James168 — Thu, 27 Aug 2026 06:27:23 GMT

Hi,

1) I have added the Device key value from nRF Mesh app JSON file, and SRC address filled with 0x0001

2) I use NCS v3.4.0, and the mesh sample light_ctrl (light fixture) with default prj.conf values.

The prj.conf shows

CONFIG_BT_MESH_PB_GATT=y

and I also use nRF Mesh app as provisioner.

3) I noticed the difference in wireshark, my Protocol is still show ATT or "LE LL"

but from the old success thread it showed protocol BT Mesh

I can't know why my protocol is not BT Mesh?

tesc — Wed, 26 Aug 2026 15:46:25 GMT

Hi,

Have you also added the Device Keys?

Further, is your Bluetooth Mesh communication using ADV bearer or GATT bearer?

Regards,
Terje