diff --git a/cmdeploy/src/cmdeploy/unbound/unbound.conf.j2 b/cmdeploy/src/cmdeploy/unbound/unbound.conf.j2
index 8fff4c71..98766e3b 100644
--- a/cmdeploy/src/cmdeploy/unbound/unbound.conf.j2
+++ b/cmdeploy/src/cmdeploy/unbound/unbound.conf.j2
@@ -1,4 +1,5 @@
-# Managed by cmdeploy: disable IPv6 in unbound.
+# Managed by cmdeploy
 server:
   interface: 127.0.0.1
   do-ip6: no
+  cache-max-negative-ttl: 0