openvpn: provide all local routes to export

PR: https://github.com/opnsense/core/issues/1275
(cherry picked from commit 621d703a)

src/www/vpn_openvpn_export.php

@@ -621,7 +621,7 @@ function openvpn_client_export_sharedkey_config($srvid, $useaddr, $proxy, $zipco
 
     // add basic settings
     $conf  = "dev tun\n";
-    if (! empty($settings['tunnel_networkv6'])) {
+    if (!empty($settings['tunnel_networkv6'])) {
         $conf .= "tun-ipv6\n";
     }
     $conf .= "persist-tun\n";
@@ -632,10 +632,11 @@ function openvpn_client_export_sharedkey_config($srvid, $useaddr, $proxy, $zipco
     $conf .= "pull\n";
     $conf .= "resolv-retry infinite\n";
     $conf .= "remote {$server_host} {$server_port}\n";
-    if ($settings['local_network']) {
-        list($ip, $mask) = explode('/', $settings['local_network']);
-        $mask = gen_subnet_mask($mask);
-        $conf .= "route $ip $mask\n";
+    if (!empty($settings['local_network'])) {
+        $conf .= openvpn_gen_routes($settings['local_network'], 'ipv4');
+    }
+    if (!empty($settings['local_networkv6'])) {
+        $conf .= openvpn_gen_routes($settings['local_networkv6'], 'ipv6');
     }
     if (!empty($settings['tunnel_network'])) {
         list($ip, $mask) = explode('/', $settings['tunnel_network']);