diff --git a/nixos/modules/services/networking/i2pd.nix b/nixos/modules/services/networking/i2pd.nix
index 5c4932075fe..ca2e2a065dc 100644
--- a/nixos/modules/services/networking/i2pd.nix
+++ b/nixos/modules/services/networking/i2pd.nix
@@ -256,6 +256,14 @@ in
         '';
       };
 
+      nat = mkOption {
+        type = types.bool;
+        default = true;
+        description = ''
+          Assume router is NATed. Enabled by default.
+        '';
+      };
+
       upnp = {
         enable = mkOption {
           type = types.bool;