Debian cloud-init image trunk vlan config with and `qm create --net[n] trunks=x;y`

[discourseur]

Hi! First post here. I did a lot of research before asking.

I have a single node Proxmox host using a vlan aware bridge. The switches are properly configured.

I can install Debian using the ISO and configure a single virtual interface linked to vmbr0 on the host and manage multiple vlan on the single vif of the VM. That works well.

But, I am unable to do the same using the Debian cloud-image.

I use the `qm` CLI tool.

First, I create the network interface with `qm create --net0 virtio,bridge=vmbr0,trunks=10;20`.

Then, how am I supposed to configure the different VLANs on the net0 interface? I tried `qm set --ipconfig0 ip=dhcp`, but that doesn't work.

Is there a way to do the equivalent of `qm set --ipconfig0.10...` and `qm set --ipconfig0.20`?

Is it best practice to create one virtual interface per vlan?

Thanks !

 

[gurubert]

cloud-init may not be the right tool for this situation.

cloud-init is for initialization of "simple" VMs with one or two NICs and no complicated network setup.

Maybe you can work something out with ccustom JSON data in cloud-init and a custom script in the VM template.