vlan10@enp7s0) on NixOS with NetworkManager for Use with LibvirtIf the previous setup did not work, here's a more detailed step-by-step approach to ensure proper configuration of the VLAN interface, bridge, and libvirt integration on NixOS with NetworkManager.
export LD_LIBRARY_PATH=
First, let's ensure that the VLAN interface and the bridge are correctly configured with the necessary dependencies.
Step 1: Create the Bridge (br-vlan10)
Create the bridge that will connect to the VLAN interface. Run the following command:
# Create a bridge named br-vlan10
nmcli connection add type bridge con-name br-vlan10 ifname br-vlan10
Step 2: Create the VLAN Interface and Attach it to the Bridge
Create the VLAN interface on enp7s0 and attach it to the previously created bridge (br-vlan10):
# Create the VLAN interface and attach it to the bridge
nmcli connection add type vlan con-name vlan10-enp7s0 dev enp7s0 id 10 master br-vlan10
Step 3: Set the Bridge to Use DHCP (or Set Static IP)
Set the bridge to use DHCP or configure it with a static IP address according to your network setup:
# Set the bridge to use DHCP to receive IP configuration
nmcli connection modify br-vlan10 ipv4.method auto
# Bring up the bridge connection
nmcli connection up br-vlan10
After setting up the bridge and VLAN, verify their status to ensure they are correctly set up and active:
nmcli connection show
You should see br-vlan10 as a bridge interface and vlan10-enp7s0 listed under connections.
Modify or create a new libvirt network configuration file to reference the bridge (br-vlan10).
Example XML configuration:
<network>
<name>vlan10-net</name>
<uuid>d81c3638-d45c-426d-92c9-5ebdb2548560</uuid>
<forward mode="bridge"/>
<bridge name="br-vlan10"/>
</network>
Apply the configuration to libvirt with the following commands:
sudo virsh net-define /path/to/your/network.xml
sudo virsh net-start vlan10-net
sudo virsh net-autostart vlan10-net
Ensure br-vlan10 Exists and is Up: Use ip link show br-vlan10 to verify that the bridge is up and properly connected to the VLAN interface.
Check Permissions: Ensure libvirt has the necessary permissions to access the bridge interface.
Restart Network Services: Restart NetworkManager and libvirt services to ensure all configurations are correctly loaded:
sudo systemctl restart NetworkManager
sudo systemctl restart libvirtd
Inspect Logs: Check the logs for any errors related to network setup using:
journalctl -xeu NetworkManager
journalctl -xeu libvirtd
br-vlan10 or vlan10@enp7s0.If you encounter further errors or specific issues during this setup, please provide details of the error messages or behaviors, and I can help adjust the configuration further!