diff --git a/inventory/group_vars/sign-vault b/inventory/group_vars/sign-vault
index 61a827bf1d..8b63ff97a2 100644
--- a/inventory/group_vars/sign-vault
+++ b/inventory/group_vars/sign-vault
@@ -2,3 +2,4 @@
 freezes: true
 postfix_group: sign
 host_group: sign
+ansible_ifcfg_blacklist: true