There are currently two ways to generate the interface name completion helper list (we use openvpn in this example)

• <script> ${vyos_completion_dir}/list_interfaces.py --type openvpn</script>
• <path>interfaces openvpn</path>

The first one using <script> tends to be rather slow as there is a Python interpreter startup involved (expensive). The latter simply calls a C program which is executed rather fast and gives the same result.

We can simply replace the first call with the second one to make the CLI feel faster.

NOTE this currently does not work for interfaces that have VLAN subinterfaces (bridge, bond, ethernet)