diff --git a/nodepool/scripts/multinode_setup.sh b/nodepool/scripts/multinode_setup.sh
index 77f746c9f8..61a12f8ef4 100755
--- a/nodepool/scripts/multinode_setup.sh
+++ b/nodepool/scripts/multinode_setup.sh
@@ -18,7 +18,7 @@
 
 export PATH=$PATH:/usr/local/sbin:/usr/sbin
 
-for ip in `cat /etc/nodepool/primary_node /etc/nodepool/sub_nodes`; do
+for ip in `cat /etc/nodepool/primary_node /etc/nodepool/sub_nodes /etc/nodepool/primary_node_private /etc/nodepool/sub_nodes_private | sort -u`; do
     sudo iptables -I openstack-INPUT 1 -s $ip -j ACCEPT
 done