diff --git a/nixos/modules/virtualisation/containers.nix b/nixos/modules/virtualisation/containers.nix
index eaa4d828afb..f570813805c 100644
--- a/nixos/modules/virtualisation/containers.nix
+++ b/nixos/modules/virtualisation/containers.nix
@@ -159,7 +159,7 @@ let
             fi
           ''
         else
-          ''${ipcmd} add ${cfg.attribute} dev $ifaceHost'';
+          ''${ipcmd} add ${cfg.${attribute}} dev $ifaceHost'';
       renderExtraVeth = name: cfg:
         if cfg.hostBridge != null then
           ''