Ok, we have some numbers with the new host.

Failure rate: 45/112 (40.2%),   4.4.0-119-generic #143-Ubuntu SMP Mon Apr 2 
16:08:24 UTC 2018
Failure rate: 87/222 (39.2%),   4.4.0-120-generic #144-Ubuntu SMP Thu Apr 5 
14:11:49 UTC 2018
Failure rate: 117/726 (16.1%),  4.4.0-040400-generic #201803261439 SMP Mon Mar 
26 14:43:35 UTC 2018
Failure rate: 4/277 (1.4%),     4.12.0-041200rc3-generic #201804132111 SMP Fri 
Apr 13 21:13:47 UTC 2018
Failure rate: 0/407 (0.0%),     4.13.0-38-generic #43~16.04.1-Ubuntu SMP Wed 
Mar 14 17:48:43 UTC 2018


The xenial stock kernel and -120 from -proposed (just to see if LP: #1723127 is 
related or not) have around 40% failure rate.

However, xenial kernel with artful config (4.4.0-040400-generic
#201803261439) cuts down the failure rate on some level while we didn't
expect any difference from failure rate point of view.

4.12.0-041200rc3 cuts down more, then HWE eliminates the occurrence.

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https://bugs.launchpad.net/bugs/1753662

Title:
  [i40e] LACP bonding start up race conditions

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