[SOLVED] Can't create VM on new proxmox setup

[joelgsus]

I've installed the latest version of Proxmox on an HP 360 with lots of disk space and RAM.

when i try to start pfsense for first time i get this error. I also got same type of error when trying to to run Ubuntu Server VM.
Thanks in advance

Error: Unknown device type.
can't create interface fwln100i0 - command '/sbin/ip link add name fwln100i0 mtu 1500 type veth peer name fwpr100p0 mtu 1500' failed: exit code 2

kvm: -netdev type=tap,id=net0,ifname=tap100i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on: network script /var/lib/qemu-server/pve-bridge failed with status 512
TASK ERROR: start failed: QEMU exited with code 1

 

[Moayad]

Please provide us with the VM config qm config <VMID> and the output of pveversion -v

 

[joelgsus]

Hi @Moayad ,

See below results

root@proxmox360:~# pveversion -v
proxmox-ve: 7.0-2 (running kernel: 5.11.22-4-pve)
pve-manager: 7.0-13 (running version: 7.0-13/7aa7e488)
pve-kernel-helper: 7.1-2
pve-kernel-5.11: 7.0-7
pve-kernel-5.11.22-4-pve: 5.11.22-9
ceph-fuse: 15.2.14-pve1
corosync: 3.1.5-pve1
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown2: 3.1.0-1+pmx3
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-1
libknet1: 1.22-pve1
libproxmox-acme-perl: 1.4.0
libproxmox-backup-qemu0: 1.2.0-1
libpve-access-control: 7.0-5
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.0-10
libpve-guest-common-perl: 4.0-2
libpve-http-server-perl: 4.0-3
libpve-storage-perl: 7.0-12
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 4.0.9-4
lxcfs: 4.0.8-pve2
novnc-pve: 1.2.0-3
proxmox-backup-client: 2.0.11-1
proxmox-backup-file-restore: 2.0.11-1
proxmox-mini-journalreader: 1.2-1
proxmox-widget-toolkit: 3.3-6
pve-cluster: 7.0-3
pve-container: 4.1-1
pve-docs: 7.0-5
pve-edk2-firmware: 3.20210831-1
pve-firewall: 4.2-4
pve-firmware: 3.3-2
pve-ha-manager: 3.3-1
pve-i18n: 2.5-1
pve-qemu-kvm: 6.0.0-4
pve-xtermjs: 4.12.0-1
qemu-server: 7.0-13
smartmontools: 7.2-1
spiceterm: 3.2-2
vncterm: 1.7-1
zfsutils-linux: 2.0.5-pve1

root@proxmox360:~# qm config 100 boot: order=scsi0;ide2 cores: 1 ide2: local:iso/pfSense-CE-2.5.2-RELEASE-amd64.iso,media=cdrom memory: 2464 name: pfsense net0: virtio=D6:9F:B3:D4:21:00,bridge=vmbr0,firewall=1 numa: 0 ostype: l26 scsi0: local-lvm:vm-100-disk-0,size=32G scsihw: virtio-scsi-pci smbios1: uuid=47764207-2e00-433a-9217-358c34d21a2e sockets: 1 vmgenid: 0b4274ae-f9eb-4afd-8ca0-47f43e887063 root@proxmox360:~#

 

[Moayad]

Hi,

Thank you for the output please consider upgrading to the current version, if the pve-kernel has upgraded too you have to reboot the server.

Otherwise, could you try to disable the firewall from the pfSense VM by going to Datacenter->proxmox360->100 (pfSense)->Hardware->Network Device, clicking edit and disabling the Firewall then try to start the VM, if the VM started please re-enable the Firewall again and start the journalctl -f command then start the VM and send the output of the journalctl command

 

[joelgsus]

Thanks @Moayad. All good now after updating all to latest version and reboot.

 

[Moayad]

Glad to hear that!

I will go ahead and set your thread as SOLVED to help other people who have the same issue