@LongTimeAgo I believe "not found in arp table" means simply that the device did not recently communicate with the Deco, might be unresponsive, and the "disconnect_counter" is used to decide that the...

@newmoro Apparently, you are not using a switch, you are connecting all Deco to your ISP box. You can only do that is the operation mode of the Deco is Access Point. Your ISP box acts as a Router,...

@newmoro What is the operation mode of your Deco mesh: Router or Access Point? How is your main Deco connected to Internet? Is your ISP box connected to the switch?

@Andrei_2025 My suggestion was to rename your main network, to avoid reconfiguring the large amount of devices using the name of the wifi network.

@Andrei_2025 Does your Deco support the IOT feature? If yes, that would be the third wifi network you are looking for. Could you not rename your main wifi with the name currently used by the guest...

@dudeparebro I suggest trying, for the IPv6 Assigned Type: SLAAC+RDNSS.