diff --git a/stack.sh b/stack.sh
index 155a3dd..0750d26 100755
--- a/stack.sh
+++ b/stack.sh
@@ -210,7 +210,7 @@ function read_password {
 PUBLIC_INTERFACE=${PUBLIC_INTERFACE:-eth0}
 FIXED_RANGE=${FIXED_RANGE:-10.0.0.0/24}
 FIXED_NETWORK_SIZE=${FIXED_NETWORK_SIZE:-256}
-FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.1/28}
+FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.224/28}
 NET_MAN=${NET_MAN:-FlatDHCPManager}
 EC2_DMZ_HOST=${EC2_DMZ_HOST:-$HOST_IP}
 FLAT_NETWORK_BRIDGE=${FLAT_NETWORK_BRIDGE:-br100}