I use kernel 4.9.130 (my own build from current "stretch" sources, package linux-source-4.9 version 4.9.130-2), and on my new machines with i40e devices, I observe similar, occasional issues:
Jan 9 07:30:06 viale kernel: [428469.260531] i40e 0000:19:00.1: cleared PE_CRITERR Jan 9 07:30:06 viale kernel: [428469.260639] i40e 0000:19:00.1: TX driver issue detected, PF reset issued Jan 9 08:47:06 siv kernel: [422993.009196] i40e 0000:19:00.1: cleared PE_CRITERR Jan 9 08:47:06 siv kernel: [422993.013535] i40e 0000:19:00.1 eth1: NIC Link is Down Jan 9 08:47:16 siv kernel: [423002.131389] i40e 0000:19:00.1 eth1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: None Curiously each of those machines only ever show the one type of error (never show an error like the other machine), and both only complain about eth1, never about eth0 (though eth0 is also connected with similar traffic volumes). Following the hints in this bug report, I will try the Intel i40e driver, from (either) https://downloadcenter.intel.com/download/24411/ https://sourceforge.net/projects/e1000/files/i40e%20stable/ Cheers, Paul -- Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia
