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networking/nftables: enable flushing ruleset for older versions

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Co-authored-by: Naïm Favier <n@monade.li>
This commit is contained in:
Maciej Krüger 2022-12-26 00:35:15 +01:00
parent 311d2fa994
commit cd3af25932
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1 changed files with 4 additions and 0 deletions
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4
nixos/modules/services/networking/nftables.nix
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@ -83,6 +83,8 @@ in
'';
};
networking.nftables.flushRuleset = mkEnableOption (lib.mdDoc "Flush the entire ruleset on each reload.");
networking.nftables.ruleset = mkOption {
type = types.lines;
default = "";
@ -209,6 +211,7 @@ in
boot.blacklistedKernelModules = [ "ip_tables" ];
environment.systemPackages = [ pkgs.nftables ];
networking.networkmanager.firewallBackend = mkDefault "nftables";
networking.nftables.flushRuleset = mkDefault (versionOlder config.system.stateVersion "23.11");
systemd.services.nftables = {
description = "nftables firewall";
before = [ "network-pre.target" ];
@ -222,6 +225,7 @@ in
executable = true;
text = ''
#! ${pkgs.nftables}/bin/nft -f
${optionalString cfg.flushRuleset "flush ruleset"}
${concatStringsSep "\n" (mapAttrsToList (_: table: ''
table ${table.family} ${table.name}
delete table ${table.family} ${table.name}