[SOLVED] VLAN aware bridge in Proxmox 6


New Member
Sep 25, 2019
Not sure if it's because I'm doing something wrong, but since upgrading to version 6 my server won't connect to my network. I've got a single physical interface that carries 2 tagged vlans to my switch. Following the example in the wiki for VLAN aware Linux bridge (without OVS) my /etc/network/interfaces looks something like this:

iface eno1 inet manual

auto vmbr0.10
iface vmbr0.10 inet static

auto vmbr0.11
iface vmbr0.11 inet manual

auto vmbr0
iface vmbr0 inet manual
bridge_ports eno1
bridge_stp off
bridge_fd 0
bridge_vlan_aware yes

This was working for me prior to upgrading from 5 to 6, but does not work anymore. Instead, after trying countless permutations for syntax, I ended up with this:

iface eno1 inet manual

auto vmbr10
iface vmbr10 inet static
netmask 24
bridge-ports eno1.10
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094

auto vmbr11
iface vmbr11 inet manual
bridge-ports eno1.11
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094

This DOES work in v6. The main difference is that a generic vmbr0 is unnecessary, but on the vlan specific bridges, the vlan specific interface must be specified under bridge-ports.

Seems like this is working for now, but I wanted to see if there is a more recommended way to do this?

Either way, I think the documentation needs to be updated.

Thanks for reading.
Is this really SOLVED? Reverting to this methodology appears to be a retrograde step

I had a similar issue, wherein I also had
iface vmbr87 inet static
bridge_ports bond0.87
and regular a vmbr0 interface.

To fix this..
I found the `vmbr0` interface setup had to preceed the others, after the `iface bond0 inet manual` stanza in the /etc/network/interfaces file
Last edited:


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