[Feature Request] OpenVPN N2N: add "push ifconfig" to server config

Hi Ipfire developers

Thank you for the great project, I operate 2 Ipfire FW and 1 OPNsense FW, all connected to each other by n2n OpenVPN tunnels. In order to setup a n2n VPN tunnel between Ipfire (server) and OPNsense (client), I had to manually add <push “ifconfig 192.168.99.2 192.168.99.1”> to the server.conf file. Is it possible to add this option in the GUI to push the p2p network to the client? OPNsense does not add the to the client.conf either in their VPN instances. So such an interoperability does not work out-of-the box, which would be very nice.

Thank you for considering the request.

David