diff --git a/inventories/default.nix b/inventories/default.nix
index 3012016..2af3b99 100644
--- a/inventories/default.nix
+++ b/inventories/default.nix
@@ -101,12 +101,6 @@
             input = "self";
           };
           roles.default.tags."phonebox" = { };
-          roles.default.machines.rigel.settings = {
-            ata-ethernet-iface = "enp2s0";
-          };
-          roles.default.machines.neptune.settings = {
-            ata-ethernet-iface = "enp2s0";
-          };
         };
 
         pocket-id = {
diff --git a/modules/clan/phonebox/default.nix b/modules/clan/phonebox/default.nix
index f3b707c..8d30da3 100644
--- a/modules/clan/phonebox/default.nix
+++ b/modules/clan/phonebox/default.nix
@@ -12,6 +12,7 @@
         options.ata-ethernet-iface = lib.mkOption {
           type = lib.types.str;
           description = "An Ethernet interface that connect to ATA box.";
+          default = "enp2s0";
         };
       };
     perInstance =