@MR.S Thank you for the link. Unfortunately, I still can't find the ARP option.

@MR.S

@MR.S I can't find this option. I'm too stupid.

@MR.S Thank you for your suggestions. All devices have been restarted. Since the system has been producing unstable connections (Wi-Fi) from the start, I always keep the firmware up to date, hoping...

@GRL Hello, where can I enable ARP? I can't find anything about it.

This phenomenon occurs frequently. Eventually, an IP address will be assigned. This is probably the cause of the unstable network.