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Isn't E1000 a 1Gbps interface? I thought that was the hard coded limit in the module hence why I'm shying away. I switched to vmxnet3 and it's working again. I suppose I just need this to spin up a basic config then will be able to switch to SR-IOV. One thing is sure: I have tried ever possible knob for virtio and it does not work. Here was the ping output:

C:\Users\bruh>ping 192.168.1.1 -l 1472 -f

Pinging 192.168.1.1 with 1472 bytes of data:
Reply from 192.168.1.1: bytes=1472 time=1ms TTL=64

Ping statistics for 192.168.1.1:
    Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 1ms, Average = 1ms
Control-C
^C
C:\Users\bruh>ping 192.168.1.1 -l 1473 -f

Pinging 192.168.1.1 with 1473 bytes of data:
Packet needs to be fragmented but DF set.

Ping statistics for 192.168.1.1:
    Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),
Control-C
^C
C:\Users\bruh>ping 192.168.1.1 -l 4000

Pinging 192.168.1.1 with 4000 bytes of data:
Reply from 192.168.1.1: bytes=4000 time=1ms TTL=64
Reply from 192.168.1.1: bytes=4000 time=1ms TTL=64

Ping statistics for 192.168.1.1:
    Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 1ms, Average = 1ms

Strangely, only the web UI seems impacted at this point. I can ssh fine. I tried large packet ping tests with DF bit set or off. Everything passes. So strange is almost like a TCP fragmentation issue but not

Hmm. I looked through the doc, tried some tunables, but am not seeing network configuration I believe I should try. It looks like I have tried everything in that doc now, except for NATing between Proxmox and OPNSense which I don't believe I need or want.

Hello,

I'm running a few i40e NICs on a Supermicro chassis for basic routing and SNAT. I haven't even gotten that far unfortunately though. Basically, with `qm set 100 --net0 virtio,bridge=vmbr0` I see slowness, partial loading, and inevitable unresponsiveness to the MGMT portal and therefore can't proceed. If I change `net0 e1000` everything works great without changing anything in `/etc/network/interfaces` or anywhere else. I have hardware offloading disabled (all 3). I tried disabling hardware offloading within Proxmox as well via `ethtool -k gro off`... and the rest of that command. Not sure what to do as without stable LAN over a bridge, this project is dead in the water with nothing I know that can easily replace it. i40e NICs are 10G so can't deal with e1000. I appreciate your help