Merge master into staging-next

nixos/doc/manual/shell.nix

@@ -4,5 +4,5 @@ in
 pkgs.mkShell {
   name = "nixos-manual";
 
-  buildInputs = with pkgs; [ xmlformat jing xmloscopy ruby ];
+  packages = with pkgs; [ xmlformat jing xmloscopy ruby ];
 }

nixos/modules/virtualisation/docker.nix

@@ -151,8 +151,8 @@ in
   config = mkIf cfg.enable (mkMerge [{
       boot.kernelModules = [ "bridge" "veth" ];
       boot.kernel.sysctl = {
-        "net.ipv4.conf.all.forwarding" = mkOverride 99 true;
-        "net.ipv4.conf.default.forwarding" = mkOverride 99 true;
+        "net.ipv4.conf.all.forwarding" = mkOverride 98 true;
+        "net.ipv4.conf.default.forwarding" = mkOverride 98 true;
       };
       environment.systemPackages = [ cfg.package ]
         ++ optional cfg.enableNvidia pkgs.nvidia-docker;