Fix Intel Ethernet NIC Hang

Source: https://forum.proxmox.com/threads/intel-nic-e1000e-hardware-unit-hang.106001/

 

/etc/network/interfaces

Under main bridge section:

ethtool -K eno1 gso off gro off tso off tx off rx off

Make sure ethtool is installed

 

 

If ethernet hangs and you get this journal log:

Mar 29 05:14:04 pve-01 kernel: e1000e 0000:00:1f.6 enp0s31f6: Detected Hardware Unit Hang:
                                 TDH                  <3>
                                 TDT                  <75>
                                 next_to_use          <75>
                                 next_to_clean        <2>
                               buffer_info[next_to_clean]:
                                 time_stamp           <1525c7e78>
                                 next_to_watch        <3>
                                 jiffies              <15287e140>
                                 next_to_watch.status <0>
                               MAC Status             <40080083>
                               PHY Status             <796d>
                               PHY 1000BASE-T Status  <3800>
                               PHY Extended Status    <3000>
                               PCI Status             <10>