Ignored by server. Can be used in host sections. Can be used in host sections. Can be used in host sections. This parameters are used in host sections to setup network interfaces.
Default parameters apply to any host section but can be overwritten there.
This should be the same in client and server. This option is ignored by client. You can choose tap XX for ether tunnel or tun XX for tun tunnel. UDP is recommended for ether and tun tunnels only. This option is ignored by the client.