e1000e eno1: Detected Hardware Unit Hang:

Same errors here.
I see that proxmox has had problems with Intel NIC for many years.
What card should I buy for this to work properly?
Or maybe that's just the way proxmox is?
 
Also wanted to give a big thank you for
ethtool -K eth0 tx off rx off

Disabling TCP checksum offloading worked for me
This seems to have solved the hardware hangups and DRASTICALLY improved the network latency for the webapps I am running.
 
I am also having this problem, disable offloading is one way to solve it. Another solution is to modify your VM's network card model to Intel E1000E instead of VirtIO.
I was also able to reliably reproduce the problem with iperf3 client running inside the VM. (The following command might hang your host)
iperf3 -c <IPERF_SERVER> -M 100 -t 50
 
I am also having this problem, disable offloading is one way to solve it. Another solution is to modify your VM's network card model to Intel E1000E instead of VirtIO.
I was also able to reliably reproduce the problem with iperf3 client running inside the VM. (The following command might hang your host)
iperf3 -c <IPERF_SERVER> -M 100 -t 50

Thanks a lot for your report, @leiwang15 . Much appreciated.

Incidentally, I found this thread on these forums regarding E1000E vs VirtIO on Proxmox.
 
I am also having this problem, disable offloading is one way to solve it. Another solution is to modify your VM's network card model to Intel E1000E instead of VirtIO.
I was also able to reliably reproduce the problem with iperf3 client running inside the VM. (The following command might hang your host)
iperf3 -c <IPERF_SERVER> -M 100 -t 50

I've changed the VM's NICs to e1000e on 6.8.12-9-pve I219-LM. I'll post the results later.
Also keeping track of this bug report https://bugzilla.proxmox.com/show_bug.cgi?id=6273

Edit:
Bash:
iperf3 -c <IPERF_SERVER> -M 100 -t 50
from within the VM also from the host - without an issue so far, offloads with default settings [on]

Edit 2:
hang again - using e1000e in the VMs is not fixing the problem!
 
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