Require network-online - required for key acquiry

flake.nix

@@ -82,6 +82,7 @@
               TS_AUTHKEY=$(cat $RUNTIME_DIRECTORY/authkey) ${lib.getExe self.packages.${pkgs.system}.default} ${hostname} ${lib.concatMapStringsSep " " ({proto, port, dest}: "${proto}:${toString port}:${dest}") forwards}
             '';
             wantedBy = ["multi-user.target"];
+            wants = ["network-online.target"];
             serviceConfig = {
               DynamicUser = true;
               RuntimeDirectory = name;