network

I want to give my two vm’s a network so that both vm’s get an own ip address. The problem ist that when I give one of them the vmbr0 with random generated MAC address the other one is getting a ip but I can’t reach it and in the vm there is no internet access (English isn’t my best) (I run...

I have a Proxmox node with 3x RJ-45 connectors and 2x SFP+ connectors. It is losing L2 connectivity. I then have to physically reboot the node several times before it connects again. Below is the output from the ip command: [root@pvez ~]# ip -br link lo UNKNOWN...

I have Proxmox VE 9.1.1 running on an HP ProDesk 600 G1 SFF with a Minecraft server VM inside. For some reason, the NIC randomly sleeps after 30min-2hrs of usage. I can't access the web interface, can't access my files also being hosted, can't access the Minecraft server, all until i unplug the...

I have a Dell Optiplex 3020 proxmox server with VMs and LXC containers. Some LXC containers have network connectivity without issue but when I create new containers they cannot reach my network or the internet. That happends wether IP is static or DHCP. Working internet and network...

I started migrating from pure Bridge Network Setup towards Bond based Network Setup on several of my Hosts now, after I accidentally created a Network Loop by plugging in multiple NICs (physical Interface connected to vmbr0 in Proxmox Network Configuration) into a Physical Switch, all while...

Hi, I want to create a VLAN in my Proxmox, I have a router provided by my ISP and all of it's ports are used, one of them is connected to my Proxmox server. By checking my ISP router, it's seems like id doesn't support managing VLAN's. The goal is to have my VMs and LXC containers on their own...

I'm a relatively new to Proxmox still, even if I've had it deployed for 2 years. But I'm setting up a new machine at my sister's to act as a NAS, CCTV NVR, Photo backup, etc, I currently have my NAS standalone at home, so that's why I'm in the dark with this one. Would it be worth while setting...

Hi all, we're trying to improve the robustness of our IT deployment by moving one node to an offsite location. The nodes will stay in the same subnet using a site-2-site VPN handled by the external firewall. A test setup of this works already, but one potential issue has surfaced: When a VM is...

Having issues with VLAN connectivity on my Proxmox setup. My Ubuntu VM is getting an IP address, but it cannot reach the internet. I’m trying to figure out if my VLAN config is wrong or if I'm missing a route/gateway somewhere. Also vlan are set in OPNsense. Here’s my...

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...