[SOLVED] [SDN/QinQ Issue] Bridge Mismatch Between Proxmox SDN Zone and /etc/network/interfaces.d/sdn

[j.sanda]

Hello everyone,
I’m experiencing an issue with SDN and QinQ configuration in my Proxmox environment. Here’s a breakdown of my setup and the problem:

Environment Details​

• Proxmox Version: 8.4.0
• SDN Zone Configuration:
  
  • Name: For example, QinQ_ACCESS
  • Bridge: vmbr0
  • VLAN Protocol: 802.1ad
  • Service VLAN ID: 10 (as shown in the attached screenshots)

Configuration Details​

• In the Proxmox SDN zone settings, I have explicitly set the bridge to be vmbr0.
• However, when examining the automatically generated configuration in the /etc/network/interfaces.d/sdn file, I noticed that the configuration references a physical interface (e.g., eno1) as the vlan-raw-device

This mismatch is causing issues with QinQ, as the expectation was for the configuration to reference the bridge (vmbr0) rather than the physical interface.

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[shanreich]

Can you set the bridge to vlan-aware and try again?

 

[j.sanda]

Can you set the bridge to vlan-aware and try again?

that have solved it, thank you for help.

 

[spirit]

if vmbr0 is not vlan-aware, the service vlan is set on the physical interface enslaved in the defined bridge.

if vmbr0 is vlan-aware, the service vlan is set on vmbr0 interface vlan interface.

both should work normally.