The field 'IPv4 Remote Network' must contain a single valid ipv4 CIDR range.
These are the IPv4 networks that will be routed through the tunnel, so that a site-to-site VPN can be established without manually changing the routing tables. Expressed as a comma-separated list of one or more CIDR ranges. If this is a site-to-site VPN, enter the remote LAN/s here. You may leave this blank to only communicate with other clients.