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On a Linux machine acting as a router I have a large number of TX 'overruns'.

The machine routes through a tunnel interface (which is where the overruns are occuring). What would cause these overruns, and how could one troubleshoot such an issue?

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Overruns occur when the NIC is queuing frames faster than the kernel can process them.

Redhat: Common Queue Issues

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Now to find out why it is only happening on my nodes with bonding... xkcd.com/979 – kporter Oct 28 '14 at 0:09

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