Disable e1000e offloading for Proxmox VE and unRAID

disable-nic-offload-e1000e.service

# This prevents the freeze with the message 'e1000e eno1: Detected Hardware Unit Hang'

# >> Skip this file for unRAID, since it does not use systemd <<

# Put this file in /etc/systemd/system/disable-nic-offload-e1000e.service
# Then manually run it, 'systemctl start disable-nic-offload-e1000e'
# Check the output with 'systemctl status disable-nic-offload-e1000e'
# Then enable it with 'systemctl enable disable-nic-offload-e1000e'


[Unit]
Description=Disable NIC offloading for all Intel e1000e interfaces
After=network.target

[Service]
Type=oneshot
ExecStart=/opt/nic-offload-fix/disable-offloads.sh

[Install]
WantedBy=multi-user.target

disable-offloads.sh

#!/usr/bin/env bash

# This prevents the freeze with the message 'e1000e eno1: Detected Hardware Unit Hang'

# For Proxmox VE:
#    1. Run 'mkdir -p /opt/nic-offload-fix'
#    2. Put this file in /opt/nic-offload-fix/disable-offloads.sh
#    3. Then run 'chmod +x /opt/nic-offload-fix/disable-offloads.sh'

# For unRAID:
#    1. Install the 'User Scripts' plugin
#    2. Create a new script and paste the contents of this file in it
#    3. Set it to run at first array startup only
#    4. Apply
#    5. Reboot, or use the 'RUN SCRIPT' button

echo "Finding all e1000e interfaces..."

for device in /sys/class/net/*; do
        interface="$(basename "$device")"
        if [[ "$interface" == "lo" || "$interface" =~ ^(tun|tap|fwbr|veth|vmbr|bonding_masters|br|bond|docker|tailscale) ]]; then
                echo "Skipping interface $interface: virtual interface detected"
                continue
        fi

        driver="$(basename "$(readlink -f "/sys/class/net/$interface/device/driver" 2>/dev/null)" 2>/dev/null)"
        mac="$(cat "/sys/class/net/$interface/address" 2>/dev/null)"

        if [[ "$driver" == "e1000e" ]]; then
                echo "Disabling offloads for Intel e1000e NIC: $interface ($mac)"
                ethtool -K "$interface" gso off gro off tso off tx off rx off rxvlan off txvlan off sg off
        else
                echo "Skipping interface $interface ($mac): driver $driver detected"
        fi
done