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-rw-r--r--nixos/modules/services/networking/bind.nix10
1 files changed, 9 insertions, 1 deletions
diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index e44f8d4cf30..2045612ec05 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -59,7 +59,7 @@ let
         listen-on-v6 { ${concatMapStrings (entry: " ${entry}; ") cfg.listenOnIpv6} };
         allow-query { cachenetworks; };
         blackhole { badnetworks; };
-        forward first;
+        forward ${cfg.forward};
         forwarders { ${concatMapStrings (entry: " ${entry}; ") cfg.forwarders} };
         directory "${cfg.directory}";
         pid-file "/run/named/named.pid";
@@ -151,6 +151,14 @@ in
         ";
       };
 
+      forward = mkOption {
+        default = "first";
+        type = types.enum ["first" "only"];
+        description = "
+          Whether to forward 'first' (try forwarding but lookup directly if forwarding fails) or 'only'.
+        ";
+      };
+
       listenOn = mkOption {
         default = [ "any" ];
         type = types.listOf types.str;