bridge

  1. A

    Proxmox sending vlan tagged VM traffic as untagged on

    On a proxmox node (8.4.1) I have the following under cat /etc/network/interfaces my switch is set to trunk and tagged on the physical port and is member of all VLANs.When I create a VM with no VLAN tag or VLAN tag 1300 it works perfectly, but if I try to tag a VM to VLAN 2471 for example: qm...
  2. J

    DC firewall blocks vm traffic

    On our proxmox we're doing a bit of async routing, problem is that with the datacenter firewall enabled, the traffic is blocked at the bridge, if disabled it works as it should. Problem is that this seems to be the invalid rule in the forward chain. Problem is, that is a default rule so we...
  3. R

    [SOLVED] PVE 8.3.0 - vmbr0 Works at OS Level but "Unknown Type" in Web UI & No /run/network/ifstate Created

    Hello Proxmox Community, I'm encountering a persistent issue with my Proxmox VE 8.3.0 installation where my Linux bridge vmbr0 is not correctly recognized by the Proxmox VE web UI, despite being functional at the OS/kernel level. This problem has existed since the initial installation of the...
  4. D

    Linux bridge/bond/nic(s) intermittent behavior (?)

    I'm having an issue with a network 'linux bridge' or 'bond' in PVE/Debian. I have recently migrated from ESXi 7.0u3 to Proxmox 8.4. I am NEW to Proxmox bonds/bridges but I 'think' I have set it up correctly. (?) I setup PVE 8.4 on a temporary old desktop with (1x 1G NICs and 2x 2.5G NICs) in...
  5. G

    [SOLVED] vmbr0 misconfiguration - guests do not start

    Dear Experts, I messed up the bridge config (created one, then deleted it from gui) Today I updated the proxmox packages, then reboot and all interfaces were down. I managed to modify /etc/network/interfaces and I can access now the GUI/ssh but containers/vms do not start because they are...
  6. S

    Proxmox host lost vmbr0 network access after IP change

    I recently needed to change the IP structure of my proxmox cluster. I broke the cluster and changed IPs. I have one system that has lost the vmbr0 interface which has completely caused the system to loose network access. I currently only have IPMI access. Here is info on the system: Proxmox...
  7. H

    bridgeless network for QEMU? (ie. only TAP, and manual/hookscript connections to host/other VMs)

    I'm looking for a solution to drop the need for intermediate bridges for a corner/edge case where I need the VMs to have "direct" P2P links ONLY, and typically to the host too. Reason: I want to use OpenFabric as a IGP, and it requires P2P links only , ie, only 2 parties to a link. As I add...
  8. L

    Proxmox Linux Bridge on Debian Failing to Get IP Address

    Good afternoon, I would like to know what else I can check to help my VM connect to the network. I installed Proxmox under Debian following the wiki (https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_12_Bookworm) and created the Linux Bridge vmbr0. However, when I create a VM using...
  9. J

    How to disable the restriction of SDN DHCP server

    I want to use SDN's DHCP to assign IP addresses to the virtual machine's tap device, but I find the dnsmasq config file which managed by PVE itself has this optiondhcp-ignore=tag:!know. So if the MAC address is not in the list of addresses assigned by PVE, the DHCP server can only receive the...
  10. G

    [SOLVED] fwbr/fwpr/fwln interfaces although firewall is disabled

    Hello, I have tap/fwbr/fwpr/fwln interfaces for each VM interface although I have Proxmox firewall disabled on cluster, node and all vms. I have enabled the firewall once, but disabled it again. Example: # ip a|grep 104 22: tap104i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc...
  11. S

    Connecting legacy vlan with vxlan

    Hello, I'm trying to migrate from vlan to vxlan, and I'm trying to figure out how to best bridge between a vxlan and a vlan. My initial thought was to use a linux vm and just bridge between two interfaces. While this will work, I'm wondering if there is a better way to do this? I know that it's...
  12. 0

    network connection to proxmox server cuts out when enabling bridge in vm?

    hello, i'm working on setting up a network bridge in a proxmox VM running rocky 9.5. a test bridge br0 created with iproute2 works fine. when i try to create a similar persistent bridge using nmcli per...
  13. C

    No Connection after unplugging GPU

    My GPU is really loud and as this is supposed to be a server I do not need it. But after I unplugged it, I couldn‘t connect to the WebGUI, so I plugged it back in and everything worked again. And yes, I know about network names changing when adding or removing PCIe devices, but that doesn‘t...
  14. J

    [SOLVED] Yet another networking issue from former ESXi user

    All - I know there have been many posts regarding similar issues - and I apologize for positing if this has already been addressed - but I've been trying to shift from ESXi for five days and am at the end of my rope. For background I've been running ESXi homelabs + Unifi infrastructure for...
  15. C

    [SOLVED] New Server, New Container but no internet access

    Hi, We just bought a new server, i've installed SSH onto it just so that I can use Terminal instead of the console that the Proxmox gives us, created a new container but is having issues with having a internet connection i.e: I cannot ping from this container, however ping from the server with...
  16. A

    How to setup GRE Tunnel or Wireguard for my bridge?

    hello everyone, I want some ip for my proxmox, since my provider charge heft free for ip, I want to setup GRE Tunnel or Wireguard, I wanted to know how to set them in proxmox, I dont know how to do GRE tunnel or Wireguard, so any help is appreicated!
  17. G

    [SOLVED] Proxmox bridged networking on Hetzner root server difficulties

    I have been trying to setup proxmox on a Hetzner dedicated root server in a bridged configuration for the past day. Right now I only have the 1 IP. I intend to ultimately run an opnsense VM and NAT that IP for a couple VMs and eventually purchase a couple more IPs for some other VMs, but don't...
  18. R

    HELP ME!! Bridge on top of bond wifi and ethernet, VM can't get internet connection

    I know I am crazy here to configure this kind of networking but I want to try if possible. Also a noob about networking. My PVE host have two physical interface, ethernet enp5s0 & wifi wlp6s0. Both connected to different network. enp5s0 is connected to 192.168.1.0/24 network while wlp6s0 is...
  19. B

    Proxmox LXC Container Connectivity Problem

    Hello! I have 2 proxmox LXC containers connected to a standard Linux bridge. The containers are running Ubuntu 24.04, the first container works great and has the same configuration as the second one except it is assigned a different static ip obviously. For whatever reason, on the second LXC...
  20. A

    openvswitch permissions missing?

    I'm trying to use pools and roles to allow limited user self-service, but I'm stuck on allowing them to create their own VMs. The sticking point appears, I think(???) to be that I'm using OpenvSwitch. Openvswitch works great for my needs, but I don't see any permissions for it in the PVE...