network

Having an issue with VMs and LXCs not being able to get onto the network (outside cluster) or get DHCP over a bridge, either directly on the bridge or through SDN VNet. Initially, the firewall was disabled. I enabled it (proxmox-firewall) and added rules for DHCP, but this has not changed the...

Howdy! So, sliiightly weird one. I'm currently seeing thousands of DNS requests hitting my Unbound server, which is making it a bit sad with me. I'm seeing a lot of repeated DNS requests for the same (local) domain from the same client, which is a little odd since I'd expect the client to cache...

So I've been having an "ongoing" issue with PBS. I'm not virtualizing PBS within PVE, it is a separate machine. Backups (especially of large VMs') usually fail with the error ERROR: backup write data failed: command error: protocol canceled Smaller vm's I can retry and it will eventually work...

Hallo zusammen, ich hoffe ich nerve hier im Forum nicht mit absoluten Anfängerfragen, hoffe aber, dass man mir vielleicht die richtigen Google-Links geben kann. Ich habe schon einiges gesucht, aber die Frage ist immer, ob die Infos noch aktuell sind und ob sie auch im produktiven Umfeld gut...

I configured the network rate limit in the Network settings of a virtual machine, but around midnight, the traffic spikes again as if the settings are being reset. I even placed a script at /etc/network/if-up.d/reapply-rate, but the issue still occurs.

I'm testing jumbo frames between two Proxmox nodes. Weirdly, using ping -M do -s 8972, it still works when I don't have jumbo enabled on the interface, or the switch's VLAN. I'm using a VLAN interface with no MTU set, running on a 10 Gb/s interface that has the MTU set to 9000 The servers are...

Hi, Proxmox VE 8.x boot stuck in emergency mode ("Failed to start" errors, garbled text, cursor freezes – see screenshots). No network, can't access web UI. Suspect Radeon GPU (512 MB VRAM) graphics issue. Help needed! System Specs: Hardware: [CPU e.g. Intel i5, RAM 16GB, Motherboard...

hello! where should qdiscs be attached? Inside the LXCs/VMs or on the virtual interfaces on the proxmox hosts? Why do veth interfaces use the noqueue by default and tap interface use the configured default qdisc? On my multi queue tap interface the qdisc behavior is even more strange. It doesn't...

Hi all, is it correct that by default Proxmox 9 in a 3 node cluster configuration with CEPH for VM migration use VMBR0 network? Current node network config does use a separate network for CEPH Cluster (10.10.10.x/24), CEPH Public (10.10.20.x/24), COROSYNC (172.16.1.x/24) and VMBR0...

Recently when my pve host machine rebooted, sometimes all LXC containers lost their Internet connection. When I tried to manually ifup ethxxx in the LXC container, it stuck at DHCPDISCOVER and got no answer. Changing the MAC address of container may work for a little while (about 5 min) and it...

Hello, I am observing recurring network interruptions on one of my VMs. Monitoring shows packet loss spikes up to 70–80% as well as high round-trip time outliers. An interesting observation is that the problem only appears after 3–4 days of VM uptime. Other VMs on the same host are not...

Hello, I'm new to Proxmox VE and have a problem configuring my first server's network. I'm using an onboard Intel network card (I219-V, driver e1000e) and an external USB 3.0 network card from Realtek (RTL8153, driver r8152). The Intel I219-V is configured for a peer-to-peer connection to my...

We are running PDM beta as a VM on a Proxmox host and I cannot get basic network functionality. I can't even ping 1.1.1.1, but DNS does resolve despite pings failing to get out to even yahoo.com. This PDM is a freshly installed VM (only running a few days) and is running right next to 26 other...

Hello all, I've recently started trying to move some services into LXCs, but I am having issues with that appear to be DNS related. I have the Proxmox GUI sitting on a Linux Bridge that is tagged with VLAN 40. I also have several VMs that get tagged for VLAN 40, as they have managment consoles...

Good evening (or morning), After days of testing and configuring my Proxmox instance, I'm still experiencing issues. I've rented a Hetzner dedicated server which comes with an IPv4 address (which I want to use for my host) and an IPv6 /64 subnet (which I want to use for my host and containers)...

Hi, SOLVED - LXC is privileged as per Jellyfin's documentation which disables nesting by default. Adding nesting resolves the issue. I'm trying out Proxmox for the first time and everything was going well but all of a sudden IP settings have stopped working for new LXCs (I haven't tried VMs)...

Hey all. I'm just getting started with proxmox v9 and been fighting for a while with port redirection. iptable manual says I should use -d or --destination but I get this or this makes no sense to me. it tells me I *must* use --to-destination but when I do use it it says it's an...

Hello, I am trying to configure a virtualized PVE host (VMware) with two virtual network cards connected to a firewall (Palo Alto). I do not have access to the VMware level or the Palo Alto configuration (private cloud provider). The goal is to deploy certain CTs on the PVE and a Proxmox...

I am playing with Proxmox in Azure. I set up a vanilla Debian 12 OS with two NICs. I was able to install Proxmox using This Guide and without much fuss. I can create and run both containers and VMs. The issue I am having is with networking, guest VMs and containers are unable to access even...

Hello I've added an additional network card into my proxmox computer. This causes a "device-rotation" (related to the network device names / numbers in proxmox) and a connection lost to the proxmox mgmt-ip. Old naming of the network devices (before inserting the new network card) was...