proxmox: NIC issues with e1000e network adapters
Summary Some Intel onboard NICs using the e1000e driver can intermittently lose network connectivity on Proxmox VE and repeatedly log errors like: e1000e … Detected Hardware Unit Hang This can cascade into Linux bridge ports being disabled (VM connectivity loss) and may trigger reboot/recovery automation if present. A commonly used mitigation is to disable specific NIC offloads (especially TSO) and disable EEE (Energy Efficient Ethernet), then re-apply those settings on every boot using a systemd unit. ...