Openvswitch failed to start when installing Pnetlab

[willydwi77]

I have a problem when installing PNETLab in Ubuntu 18.04 container. I see openvswitch is failed to start. Even if I reinstall, the result is the same. Is there any adjusment on the network configuration side in the guest or host? Sorry I new with proxmox so I don't have any idea of this error, thanks

Here the information of openvswitch-switch package




And this my network config side in the guest


And here side on the host