2 different devices with same Zerotier MAC address

Hello,
i have already 10 nodes in my zt network.
I’m adding a new one, but it refuses to connect (it stays stuck in REQUESTING_CONFIGURATION).

After analysis, i discovered that the zt mac address on this device is the same as another existing device in my zt network. So that may explain why that don’t work.

So how to force the zt client to create a new mac adress ?
Ty !

Ok found how to change the mac by following the doc on https://zerotier.atlassian.net/wiki/spaces/SD/pages/327693/How+to+Clear+Reset+your+ZeroTier+Address