NIC flapping Down/Up and speed dropped from 1G to 100M

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NIC flapping Down/Up and speed dropped from 1G to 100M

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Red Hat Enterprise Linux 6.5
kernel-2.6.32-431.el6.x86_64
igb 5.0.5-k

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NIC flapping Down/Up and speed dropped from 1G to 100M

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