diff --git a/packer/preseed/UbuntuServer20.04/user-data b/packer/preseed/UbuntuServer20.04/user-data
index a9db06d..0f5af58 100644
--- a/packer/preseed/UbuntuServer20.04/user-data
+++ b/packer/preseed/UbuntuServer20.04/user-data
@@ -11,6 +11,7 @@ autoinstall:
       ethernets:
         ens192:
           dhcp4: true
+          dhcp-identifier: mac
   storage:
     layout:
       name: direct