network

  1. W

    Problem With Backup Notifications

    I run local backups every night on a proxmox node, and have notifications configured to be sent using a webhook to Pushover. Manual tests of the notification transport always succeed, and the proxmox node also forwards emails from a nightly rsync cron task (that copies my backups offsite). I...
  2. P

    Hetzner Proxmox Cluster and vswitch configuration

    Hi all , Initial setup: I have deployed a proxmox on a single node then turned it into a cluster by adding two nodes on dedicated servers on hetzner cloud . In order to ensure communication between the nodes i configured a vswitch and added the 3 nodes. I have configure the ha manager and rules...
  3. U

    High Switch CPU due to Jumbo Frames / Video Streaming - Migrating Physical pfSense/DGuard to Proxmox?

    Hello everyone, I am working with a client who has an interesting setup. Initially, their entire project was based on VMware ESXi 8.0u2. They run a security monitoring company that handles businesses, homes, security cameras, and related services. They previously had inadequate hardware and...
  4. P

    OPNSense cannot get WAN IP via DHCP from ISP on host boot

    I've read many posts and tried different solutions and I only find workarounds (e.g. cron scripts etc.) My setup: 4 nic mini PC for OPNSense VM (and a few other VMs like pi-hole) Only 2 nics are used, IPv4 only, no vLAN Current workaround is either replug the WAN cable or run `ip link set nic3...
  5. R

    [SOLVED] VLANS für VMs und Host

    Moin zusammen! Ich habe eine Frage zum Networking. Wir arbeiten mit vielen VLANS. Ein Teil der VLANS muss nur an meine VMs weitergegeben werden. Einige VLANS müssen an meinen PVE-Host. Ich habe ein dediziertes VLAN für die WEBGUI unsere PVE-Hosts . (VLAN 10) Und verschiedene Netze für...
  6. Z

    migrating machines in case extern network fails

    Hello, let's assume a 3 node cluster with ceph, node1/node2/node3 being let's say 10.0.0.1/2/3 respectively on external interfaces, and 10.10.10.1/2/3 on internal ones (ceph+migration on 10.10.10.0/24, 'production' on 10.0.0.0/24). let's assume node1 external network (10.0.0.1) goes dark...
  7. A

    [SOLVED] PBS - Correct and simple VLAN settings

    Dear community, i´m struggeling quite alot with the correct configuration of vlan, after the installation. After the installation I have to edit "/etc/network/interfaces" to get that bare metal server to be on VLAN9. But it seems it does not work like a normal PVE host. I already set it up...
  8. M

    Running Proxmox on a Viper Laptop Z11, Looking for Networking Advice

    I'm planning to install Proxmox VE on a Viper Laptop Z11 for a small home lab. The goal is to run a few Linux VMs and containers for testing, learning, and some lightweight self hosted services. Since the laptop only has built in networking, I'm looking for recommendations on the best way to...
  9. A

    SDN DHCP with dnsmasq generates static leases only and ignores configured DHCP ranges

    Hi, I'm testing SDN DHCP on Proxmox VE 9.2.3 following the official documentation: https://pve.proxmox.com/wiki/Setup_Simple_Zone_With_SNAT_and_DHCP Environment Proxmox VE 9.2.3 libpve-network-perl 1.6.6 dnsmasq 2.91 Single-node setup SDN Configuration Zone: simple: local ipam pve dhcp...
  10. G

    Firewall VM with network bridge with multiple different VLA configs

    Hi all, I need to migrate a virtual Firewall to PROXMOX from Hyper-V. My proxmox server has 3 NICs physical NICs (LAN1, DMZ, Internet). The Firewall VM has - one NIC to Internet - one to DMZ and - 7 NICs connected to LAN1: 3 NICs are without VLAN config 3 NICs are with VLAN Access config 1 NIC...
  11. hloudes

    How to configure DSCP ?

    Hello everyone, Following the latest release of Corosync, the totem.ip_dscp option was introduced. I would like to explore this feature and have implemented it on a 4-node cluster as follows: I modified the /etc/corosync/corosync.conf file by adding ip_dscp: 48 to the totem section. After...
  12. P

    [SOLVED] Use secondary network for PVE commands

    Is there a way to use the secondary network in a cluster for command (ssh) communication? I have two interfaces on all hosts in a cluster: a local 192.168.x.x, and a public with public ips, set as ring0 and ring1, respectively in corosync. Due to a switch failure, some of the interfaces in ring0...
  13. A

    proxmox-kernel-7.0.2-6-pve failing network service

    After updating to the latest kernel I have found that during the service booting it keeps hanging on the network service throwing 'waiting for process: systemd-udevd' and 'waiting for process: udev-worker'. I can run my last kernel, 6.14.11-9-pve but I would like a permanent solution.
  14. A

    [SOLVED] ifupdown2-pre.service and systemd-udev-settle.service failing when resetting the network

    I ran a config script ```bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/pve/post-pve-install.sh)"```, pve post install, on my Proxmox 9 machine to improve my experience. After the system rebooted I noticed I was unable to reach the webpage. I...
  15. N

    OPNsense capping speeds in Proxmox VM

    Hello, for some reason OPNsense is capping my speed to around 400 mbps in both wired and wireless, but when I wire my PC directly to my Xfinity gateway I get 1.5GBps. I'm not entirely sure why. The VM isn't being bottle necked by CPU or RAM. I have nic0 setup as WAN and in proxmox I've bridged...
  16. H

    [TUTORIAL] Terraform module for Proxmox SDN: zones, VNets, DHCP, and SNAT

    Built a Terraform module for managing Proxmox SDN declaratively: zone, VNets, subnets, host gateway IPs on the `vnet*` bridges, SNAT/masquerade rules, and dnsmasq DHCP from a single `vnets` map. The two modes that ended up being most useful in practice: Host-routed: Proxmox owns L3, NAT, and...
  17. F

    Proxmox + Tailscale: convenient remote access, but what about blast radius?

    Proxmox + Tailscale: convenient remote access, but what about blast radius? Tailscale is a very convenient way to reach a Proxmox host or VM from outside without opening inbound ports. That part is great. But I think there is an easy design mistake here: making remote access easy does not...
  18. C

    ECONNRESET over VPN After WAN Failover

    Hey all...So I am testing a failover WAN with VPN connectivity to my remote site. Everything works "except" some connectivity to PBS for sync jobs and monitoring API calls. Oddly I see the same on PVE but there is more information on teh PBS side. When the WAN failed over, the VPN's came up...
  19. H

    3 nodes without cluster sharing a subnet?

    Hello everyone, first off, i am new to proxmox if i dont know some stuff i am sorry. I wanted to build a HomeLab to Learn and have some usable services, heard good stuff about Proxmox. My Hardware consists of 3 old Laptops (HP 2x i7 11. Gen 2x. i7 10 Gen. all 16gb Ram, 1 LAN each) ans a TP...
  20. D

    Corosync link flapping with 3 nodes

    Hello, I am experiencing an issue with my cluster and would appreciate your advice. Problem description: I am constantly seeing Corosync-related messages (flapping/instability), even though there are no visible link issues. Linux does not report any port or link failures. Switch monitoring...