diff --git a/lib/images/commons/scripts-n-files.nix b/lib/images/commons/scripts-n-files.nix
index 1d104b8..f0615c7 100644
--- a/lib/images/commons/scripts-n-files.nix
+++ b/lib/images/commons/scripts-n-files.nix
@@ -19,6 +19,7 @@
     DHCP=yes
 
     [DHCP]
+    ClientIdentifier=mac
     RouteMetric=${toString routeMetric}
 
     ${if useDNS then ''