LXD is a fantastic container virtualization tool that comes by default with Ubuntu. In one of my applications I needed to have many containers each within it’s own VLAN network.

So I used OpenVSwitch in combination with LXD to achieve this.

There is no inherent facility in LXD to provide VLAN tag numbers to the interface. So it is necessary to use a “Fake bridge”. I managed to do it after reading this article by Scott – VLANs with Open vSwitch Fake Bridges

Let’s say the OpenVSwitch bridge is named vm-bridge and we want to add 10 fake bridges ranging from VLAN 20 to 30. Here’s how I did it:

for i in $(seq 20 30); do ovs-vsctl add-br vlan$i vm-bridge $i done 1 2 3 for i in $ ( seq 20 30 ) ; do ovs - vsctl add - br vlan $ i vm - bridge $ i done

In LXD you can specify the bridge to which it will connect containers to, so I created 10 containers using a similar loop 😀

Further to bind each container to the fake bridge this step is needed: