why advertising mac addess is nul 00: 00: 00: 00: 00: 00

[makouda]

somthing stange happens when with the mac address, I got a set of 00: 00: 00: 00: 00: 00 what's the cause of that

[makouda]

in fact I initialized it explicitly to 00:00:00:00:00 before starting advertising, I deleted the initialization and it works now