Hi,
I setup Proxmox for using vlans :
- vlan10 for administration.
- vlan20 for a Debian 11 VM.
VM is running like a charm in DHCP mode.
-> But when I configure VM in static mode, gateway and dns are unreachable.
VM Proxmox configuration :

VM Debian configuration -> /etc/network/interfaces
I am not sure about this setup, perhaps I need to use tagged mode.
In this case, could you please show me an example ?
Thanks !

Lab shematic

I setup Proxmox for using vlans :
- vlan10 for administration.
- vlan20 for a Debian 11 VM.
VM is running like a charm in DHCP mode.
-> But when I configure VM in static mode, gateway and dns are unreachable.
VM Proxmox configuration :

VM Debian configuration -> /etc/network/interfaces
I am not sure about this setup, perhaps I need to use tagged mode.
In this case, could you please show me an example ?
Thanks !

Lab shematic
