Very bad throughput on 22.1 using OPNsense as a VM on Proxmox

[jorglodita]

Hi, have been struggling for days with this problem, now I have found a workaround I write here tying to solve it in a better way.
First of all, sorry for not pasting here error codes or similar, I am a "GUI guy" and don´t have anything logged. If you need me to do any test please explain (as I were a 4 years boy please, I rarely use CLI) and will do no problem.

Problem: network with very degraded state after a few minutes with 22.1

I use OPNsense in a Proxmox server. Have been using it for years, it is not my first rodeo. Nothing special in my setup: a good hardware server with a Cisco g250 switch and a modern PC for testing. Using Intel cards everywhere, on my server a 10gtek i350-t4 card https://www.amazon.es/I340-T4-E1G44HT-Controladora-1Gigabit-Ethernet/dp/B01H6NE4X2.

Cat5e cable everywhere and 1gb fiber connection (not ppoe).

In case there is something weird about my configuration I just did a full format each few tries (got good hardware so I can reinstall everything in a few minutes).
For the test I just plugged the PC to the OPNsense machine, not switch involved.

OPNsense installs no problem and network always works. But after a few minutes the network speed is absolutely horrible. Haven´t performed an iperf (sorry), can confirm internet speed changes from 1GB/1GB to aroun 10mb/10mb, always with a log of latency. Network continues working but server ends freezing while doing pings, creating VMs or just changing configuration options.

Have tried with lot of configurations: doing passthrough, creating bridges and passing them, creating bonds...all with or without "advanced parameters" (changing MTU, changing multiqueue, using others than virtio drivers...), is always the same: after a few moments network becomes almost unusable.

This error happens with and without VLANs at all. With the default LAN happens too.
Have tried with and without updates to both Proxmox and OPNsense.
Have tried downloading again from different servers (in the rare case my ISO was bad).

Have tried not using internet at all, can even freeze all network just using pings between virtual machines.

The error dissapear entirely going to a 21.7 OPNsense.

I think this is something related with my server network card. Have been using it for years, errors just happens on 22.1 (I know on 22.1 Realtek cards need special configuration to work, maybe some Intel manufacturers too?)

Thanks a lot in advance!

[mifritscher]

Had similiar problems (completly broken perfomance after upgrading on a virtio nic on proxmox, in my case mostly natting)

I got the tipp on irc to disable the HW offloading, which needs assigned and enabled interfaces to the parent interfaces (which I didn't have because I had only subinterfaces due to VLANs), which fixed the problem. Seems to be a problem with freebsd 13.

[jorglodita]

Hi, a bit late but I can mark this problem as solved.

On 22.1 they introduced a big configuration change: at least in the kind of setup I am using I need to assign and enable all parent interfaces.