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 =