@3F-Nicolas : If a device is still in a network after being factory reset, it will redownload its previous configuration when it comes back online. This includes any previously assigned static ip addresses. If the configuration needs to be completely reset, make sure to remove the device from its network before resetting to factory defaults. https://documentation.meraki.com/General_Administration/Support/Resetting_Cisco_Meraki_Devices_to_Factory_Defaults
... View more