Add a network interface

A VM network interface connects to a libvirt virtual network or a Linux bridge on the host. ZRS saves interface changes in the VM configuration.

Choose the connection #

• Virtual network connects to a named libvirt network. Its configuration determines whether traffic uses NAT, a host bridge, or an isolated network.
• Host bridge connects directly to an existing Linux bridge on the host.

See NAT and host bridges for the difference.

Add the interface #

1. Open the VM and select Add NIC in its network section.
2. Choose the connection type under Attach to.
3. Select the Network or Bridge.
4. Choose a Model supported by the guest operating system.
5. Under Advanced, leave MAC address empty for ZRS to generate one, or enter a specific address.
6. Select Add NIC.

The selected virtual network must be running when the VM starts. A host bridge must already exist on the host.

Apply the change #

For a running VM, the new NIC is marked After restart. Stop and start the VM to apply the saved configuration. Rebooting inside the guest does not reload it.

Configure the new interface inside the guest. Address assignment depends on the connected network’s DHCP service or the guest’s static address settings.

Remove an interface #

Open the NIC’s actions, select Remove NIC, and confirm. Removal changes the saved configuration. On a running VM, the interface remains connected until the VM stops.