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non-local area network, is there a way to get the mac address of a host? Know ip


within layer 2 Ethernet (local area network), the MAC address is used to communicate, and the MAC address is only valid within the local area network.

across the layer 2 network, you need to obtain the MAC address, which can only be transmitted by carrying the MAC address of the host in the application layer message.

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MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ba2924-2f60a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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