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e1000e 0000:00:1f.6 eno1: Detected Hardware Unit Hang

 make a file: /usr/local/etc/ethtool.sh (eno1 is your mgmt i/f, vmbr0 is your bridge i/f.) 

#!/bin/bash
ethtool -K eno1 gso off gro on tso off tx on rx on rxvlan on txvlan on sg on && ethtool -K vmbr0 gso off gro on tso off tx on rx on rxvlan on txvlan on sg on
ethtool -G eno1 rx 4096


if you want to activate on reboot.

/etc/systemd/system/ethtool.service

[Unit]
Description=ethtool script

[Service]
WorkingDirectory=/usr/local/etc/
ExecStart=/usr/local/etc/ethtool.sh

[Install]
WantedBy=multi-user.target

then systemctl enable ethtool.service && systemctl start ethtool.service

refs: https://forum.proxmox.com/threads/e1000-driver-hang.58284/page-8#post-390709


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