The wildcat pass computes running in the integration lab are rebooting daily on a i40 tx_timeout.   

 2017-10-06T05:46:01.327 compute-03 kernel: info [527194.991580] i40e 0000:05:00.0 ens785f0: tx_timeout: VSI_seid: 399, Q 19, NTC: 0x117, HWB: 0x18c, NTU: 0x18c, TAIL: 0x18c, INT: 0x1

2017-10-06T05:46:01.327 compute-03 kernel: info [527194.991584] i40e 0000:05:00.0 ens785f0: tx_timeout recovery level 1, hung_queue 19

2017-10-06T05:46:01.381 compute-03 kernel: info [527195.045702] i40e 0000:05:00.0: Query for DCB configuration failed, err I40E_ERR_ADMIN_QUEUE_ERROR aq_err I40E_AQ_RC_EPERM

2017-10-06T05:46:01.381 compute-03 kernel: info [527195.045705] i40e 0000:05:00.0: DCB init failed -53, disabled

2017-10-06T05:46:02.322 compute-03 kernel: warning [527195.987073] i40e 0000:05:00.0: Error I40E_AQ_RC_EINVAL adding RX filters on PF, promiscuous mode forced on

2017-10-06T05:48:33.353 compute-03 kernel: info [    0.000000] microcode: microcode updated early to revision 0xb00001d, date = 2016-06-06