[ 166.451172] e1000e 0000:00:1f.6 ext1: Detected Hardware Unit Hang:
[ 168.371222] e1000e 0000:00:1f.6 ext1: Detected Hardware Unit Hang:
[ 169.437645] e1000e 0000:00:1f.6 ext1: Reset adapter unexpectedly
or
[310897.389008] e1000e 0000:00:1f.6 ext1: Detected Hardware Unit Hang:
TDH <9>
TDT <45>
next_to_use <45>
next_to_clean <5>
buffer_info[next_to_clean]:
time_stamp <112834837>
next_to_watch <9>
jiffies <112835080>
next_to_watch.status <0>
MAC Status <40080083>
PHY Status <796d>
PHY 1000BASE-T Status <3800>
PHY Extended Status <3000>
PCI Status <10>
Solution: ethtool -K eth0 gso off gro off tso off
https://serverfault.com/a/616623