Comment 6 for bug 1723127

> one bug at a time, please.

Absolutely! I just mentioned the "GRO implementation" because I wondered if it might have been related. I should have googled up better on it beforehand, that would have enlightened me that it wasn't.

I've tested the v4.4-wily kernel in the first link (4.4.0-040400-generic), and it failed miserably directly after the machine came online. I'm attaching a redacted syslog with relevant messages in it. One thing you'll note is that the i40e driver (1.3.x) complains that the firmware is too new, this might be a problem(?), but there's also a message, just before the "TX driver issue detected":

i40e 0000:02:00.1: FD filter programming failed due to incorrect filter parameters

See the attached file for more details.

We're currently running the second kernel v4.10, (4.10.0-041000-generic), and it's running fine so far, but the machine has only been up for 30 minutes, i'll let it run 24 hours, and report back tomorrow, or as soon as status changes, if at all.