virtio network

  1. M

    OpenWrt Guest won't recognize VirtIO (paravirtualized) NIC model

    Dear all, I have been running PVE with OpenWrt guest (NIC model Intel E1000) as main router for a year. It works fine. Another guest VM is Truenas (NIC model VirtIO paravirtualized). For the past year, my Truenas samba share transfer speed had never passed 50MB/s, I thought it was because of...
  2. R

    High network volume VMs with ping loss

    Hi, we operate three FlatCar based VMs on top of three Proxmox VE hosts that operate a memory based database. Hardware is still as described here running currently Proxmox VE 8.3.5. Disks in use are two NVMe as ZFS mirror handing out ZFS Volumes to the VMs with ZFS pools on top of those volumes...
  3. E

    Can Virtio network cards be used on nested-virtualized L2 guests?

    I don't know what kind of hardware card the original host (L0) has. My host Proxmox (L1) has a Virtio network card. If I assign Virtio network cards to my guests (L2), the cards are visible in guest OSs (Windows and Debian), but does not work. Cannot even ping the Vmbr0 interface on the host...
  4. D

    Proxmox Virtio Windows behavior

    Hi, I'm trying to understand if this behavior is normal: I have a windows server 2022 with the Virtio and Qemu agent installed. After I try to shutdown a node in HA, the VM is migrated in another node and the driver create a new "Ethernet2" interface and delete the primary, obviously removing...
  5. 3

    Network bandwidth is unstable between Host and VM Guest

    Host uses Linux bridge, VM Guest uses Virtio NIC model. I enabled the iperf3 server on the Host and then tested on the VM Guest,Then I get the following result: [ 5] 0.00-1.00 sec 2.08 GBytes 17.9 Gbits/sec 0 2.53 MBytes [ 5] 1.00-2.00 sec 2.91 GBytes 25.0 Gbits/sec...
  6. K

    Problems with connectivity with VMs using virtio interfaces

    Hi, I've got proxmox host running on a PC with single network interface. Inside, there are three linux VMs. Each one has network interface of virtio type. It worked just fine with Netgear Orbi Pro router. All hosts are located in one subnet, there are no VLANs. I switched to pfSense router...
  7. F

    IPv6 problem on VM Windows with VirtIO (paravirtualized) network adapter

    Hello, I have a problem on several VMs running with Windows (Windows Server 2022 or Windows 10) regarding IPv6 connectivity in my Proxmox VE 7.3.4. Indeed, on each VM I have a network device in model VirtIO (paravirtualized). The guest agent (virtio-win-0.1.173-2) is installed on Windows...
  8. A

    QEMU not more than 6 virtual network cards?

    I have a strange behaviour. I just added network card #7 to a VM and it doesn't pop up in the VM as usual Card 0...5 work. #6 does not. they are all configured the same way but with different VLAN tags in the proxmox config file I can see net0: virtio=E2:2F:32:E8:3F:4A,bridge=vmbr0,tag=801...
  9. P

    windows 2019, virtio configuration

    Hi. I have few vm's with Windows 2019 std. Everytime i add some hardware like cdrom (on proxmox hardware), shutdown vm and start it again - Red hat virtio network driver is down (screenshot). I need to uninstall it (on windows side), add it again and do all network manual configuration for this...
  10. S

    [SOLVED] Assymetric network performances

    Hi, I'm running some network bandwidth tests on an Alma Linux VM (RHEL8) and I get assymetric performances. Test is run with netcat: server: nc -l 1122 -v >/dev/null client: dd if=/dev/zero bs=4M count=1024 |nc robin 1122 The server robin is not virtualized (physical host with CentOS7). Same...