Each day at 05 in the morning my netwok connection gets dropped and reconnect. After some days the connection never comes back and the server need reboot
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Linux 3.10.0-693.5.2.el7.x86_64 x86_64
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Oct 27 05:00:38 server2 kernel: e1000e: em1 NIC Link is Down
Oct 27 05:00:41 server2 NetworkManager[707]: <info> [1509069641.3479] device (em1): link connected
Oct 27 05:00:41 server2 kernel: e1000e: em1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx