diff --git a/lib/neutron_plugins/services/l3 b/lib/neutron_plugins/services/l3
index 54dae2b..d998c06 100644
--- a/lib/neutron_plugins/services/l3
+++ b/lib/neutron_plugins/services/l3
@@ -85,7 +85,7 @@
 # Subnetpool defaults
 SUBNETPOOL_NAME=${SUBNETPOOL_NAME:-"shared-default-subnetpool"}
 
-SUBNETPOOL_PREFIX_V4=${SUBNETPOOL_PREFIX_V4:-10.0.0.0/8}
+SUBNETPOOL_PREFIX_V4=${SUBNETPOOL_PREFIX_V4:-10.0.0.0/16}
 SUBNETPOOL_PREFIX_V6=${SUBNETPOOL_PREFIX_V6:-2001:db8:8000::/48}
 
 SUBNETPOOL_SIZE_V4=${SUBNETPOOL_SIZE_V4:-24}