Why does the ink weather always show that the skin package does not match the local mac address?

The first point: If you want to surf the Internet, you must let others know the MAC address, at least let the gateway know.

The second point: MAC address is used for LAN. Outside the LAN, MAC doesn't work, but IP does.

MAC (Media Access Control or Media Access Control) address, translated as media access control, or physical address and hardware address, is used to define the location of network devices. In the OSI model, the third network layer is responsible for IP address and the second data link layer is responsible for MAC address. Therefore, the host will have a MAC address and each network location will have a unique IP address.