[SOLVED] Speed issues on the HOST after getting an dynamic IP from our NEW ISP.

[Codixer]

So I don't know what caused this. Yet, but when I have all the VM's disabled on my proxmox (just to test), the internet speed of Proxmox VE itself is about... 0.07MB/s.
I have followed several guides on what it could possibly be, from checking the interfaces to configuring the grub. But at this point, I am at a loss.

If I do ANYTHING in my VM's, they can run at a full 1gig if they wanted to, but the proxmox host takes a complete dump in it's internet speed.
Proxmox machine:


A random VM:


I'm an almost complete noob with networking, feel free to ask what you need!

 

[_gabriel]

what about an iperf3 speedtest ?

 

[Codixer]

what about an iperf3 speedtest ?

One moment, let me download iperf3 at 4b/s

 

[Codixer]

what about an iperf3 speedtest ?

Dedi:

Dedi never finished, had to forcefully stop it after a minute.



Random VM:

 

[Codixer]

Local Dedi -> VM:

 

[_gabriel]

external router/qos/firewall ?
some specific configuration on host ?
iptables rules ?
additional packages ?

 

[Codixer]

external router/qos/firewall ?
some specific configuration on host ?
iptables rules ?
additional packages ?

external: Plugged into modem directly from ISP, second server with similair setup (farm) has proper speed (700mb+)

specific conf's: Ask and you shall get, currently installed on the host is dns (pi-hole), reverse proxy (nginx) and proxmox itself.

iptables: Everything is allowed, not using IPTables.

additional packages: What classifies as an additional package?

 

[_gabriel]

NIC model ? Kernel version ? PVE version ?
I should try with another kernel, then a new PVE on spare disk.

 

[Codixer]

NIC: Intel Corporation I350 Gigabit Network Connection
Kernal & PVE: pve-manager/8.3.0/c1689ccb1065a83b (running kernel: 6.8.12-4-pve)
New PVE: I just reinstalled proxmox, machine is still utterly slow (apt update is taking minutes, instead of seconds)

 

[Codixer]

Ok jesus, it gets interesting. If the IP is 10.0.0.200, it is utterly slow. I just changed the IP of proxmox (after the reinstall) to 10.0.0.202 and now it has the full 1 gig. Bloody hell

 

[_gabriel]

looks like a QoS on router

 

[Codixer]

looks like a QoS on router

Possibly, can't say. It's a nokia router and I woudn't even know where to look. In any case, RESTORING BACKUPS GO BRRRRR


(This is gonna take a while)

 

[Codixer]

So I can tell you wile upgrading my infra... I [REEEEEE] hate ipv6, not because of what it can do. But the absolute lack of adoptation.

 

[Codixer]

Anyways, thanks for your help @_gabriel. I'll check the QoS. BUt probably will stick with the new IP instead. Mostly to keep my sanity intact.