(Are you a network administrator? Have you ever had such an experience: in the morning of one day, you suddenly found that the network performance dropped sharply, the network service could not be provided normally, the server access speed was extremely slow or even inaccessible, the network switch port indicator was flashing crazily, the router at the network exit was in full load, the router CPU had reached 100% load... The phenomenon reappeared within a few minutes after the restart.)
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