vpn: set allowedUpstreams to upstreams with less legal liability

config/net/vpn.nix

@@ -34,7 +34,7 @@
       };
     };
     ospf = {
-      allowedUpstreams = [ "upstream4" ];
+      allowedUpstreams = [ "flpk-gw" "anon1" "freifunk" ];
     };
   };
 }