nftables: Warn about correct firewall setting

services.networking.firewall might have existed during import of this
module in 2016, but it is unknown as of today.

Point to the proper boolean knob to avoid confusion.

1 files changed, 1 insertions, 1 deletions

diff --git a/nixos/modules/services/networking/nftables.nix b/nixos/modules/services/networking/nftables.nix
index ec9d9753cfe..cb75142965e 100644
--- a/nixos/modules/services/networking/nftables.nix
+++ b/nixos/modules/services/networking/nftables.nix
@@ -99,7 +99,7 @@ in
   config = mkIf cfg.enable {
     assertions = [{
       assertion = config.networking.firewall.enable == false;
-      message = "You can not use nftables with services.networking.firewall.";
+      message = "You can not use nftables and iptables at the same time. networking.firewall.enable must be set to false.";
     }];
     boot.blacklistedKernelModules = [ "ip_tables" ];
     environment.systemPackages = [ pkgs.nftables ];