Proxmox pfSense - very slow download on OVH Bare Metal Servers

[nevq]

Hey guys.

I have a very strange problem. I have 2 bare metal servers from OVH with an identical configuration (at least that's what they looked like during configuration), but when checked carefully, they differ in the network card.

1. Intel Corporation Ethernet Controller E810-XXC
2. Broadcom Inc. and subsidiaries BCM57502 NetXtreme-E 10Gb/25Gb/40Gb/50Gb Ethernet

I have proxmox 8.2.7 and 1 VM pfSense 2.7.2 on each of them.

The problem only concerns the server with card no. 2, the VM with pfSense has a very slow download, about 1% of the upload.
The situation is strange because if these servers were previously in a cluster, pfSense behaved the same way when migrating from one physical server to another.
I tried contacting OVH support but they say that everything is ok on their side and the problem is in the software. But I have 2 identical configurations and on one server there is a problem, on the other there is not.
I have tried everything, I have turned off all accelerations in pfSense.

What is also worth mentioning is that if I put Linux on these servers connected to the same interface, it works correctly on both machines.

I also tried pfsense 2.5, OPNSense and openwrt and they worked incorrectly. It looks like the problem concerns only routers and only on card no. 2.

I would be grateful for any ideas.

 

[nevq]

I did another test.
I connected the network card on the problematic machine directly to the pfSense VM using PCI mapping. And the internet worked properly, reaching full speed.

 

[Flowww89]

Hello,
I've got the same problem.
OVH give me the same reason it's a software problem, but i tried on a Linux VM and i's the same.
Thanks for your workarround.
Regards.

 

[sbraz]

If anyone wants to read the topic created by Flowww89 on the OVHcloud forums (in French), it's https://community.ovh.com/t/Proxmox-vrack-pfsense/65581/. I'll reply there once I've performed further tests.

 

[nevq]

Hi
this solved my problem:
https://forum.proxmox.com/threads/p2100g-bad-network-performance-in-docker-container.151267/

the ethtool command must be executed on the host, not the VM.

OVH should know about such problems and help customers since their servers support proxmox (installation from a template). Unfortunately, they completely ignored me.

 

[Flowww89]

Yes !!
It works many thanks !

 

[DanySupernova]

It works, I was going crazy!!! Thank you very much!!!

 

[sbraz]

Hello, FYI OVHcloud created a KB article last week for this specific issue: https://help.ovhcloud.com/csm/en-de...?id=kb_article_view&sysparm_article=KB0066095

 

[dmhannah]

OMG!! Thanks, I have been crying for 3 weeks about this, about to go back to VMWare.

Reported to OVH, they just said its the software your using, no help. I even asked if there was a setting that needed to be changed.