After the upgrade, I was encountering a network unreachable error. This happens on kernel versions -> 2.6.32-573.1 .1-el6.x86_64 and 2.6.32-573.3.1-el6.x86_64. If I revert back to 2.6.32.504.30.3.el6.x86_64, the problem goes away. Ive been search..

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