diff --git a/bundles/unbound/files/unbound.conf b/bundles/unbound/files/unbound.conf
index 31188c9..d3269dc 100644
--- a/bundles/unbound/files/unbound.conf
+++ b/bundles/unbound/files/unbound.conf
@@ -23,6 +23,10 @@ server:
     access-control: ::1 allow
 % endif
 
+% if node.has_bundle('pppd'):
+    prefer-ip4: yes
+% endif
+
     msg-cache-size: ${cache_size}
     msg-cache-slabs: ${cache_slabs}
     rrset-cache-size: ${cache_size}