I have seen this trace couple times before, and also the fact that 4.9 had been running fine since the release makes me suspect that igb is not to blame. What can I do to provide additional details here? -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html