set default network config

Author: Plopmenz

os/flake.nix

@@ -220,7 +220,10 @@
                 if (builtins.pathExists ./network-config) then
                   builtins.fromJSON (builtins.readFile ./network-config)
                 else
-                  { };
+                  {
+                    address = [ ];
+                    route = [ ];
+                  };
               network-config = builtins.map (address: {
                 name = address.address;
                 value = {