diff --git a/lib/neutron b/lib/neutron
index b05b16d72e..00bcd3c1e1 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -69,7 +69,7 @@ set +o xtrace
 
 # Gateway and subnet defaults, in case they are not customized in localrc
 NETWORK_GATEWAY=${NETWORK_GATEWAY:-10.0.0.1}
-PUBLIC_NETWORK_GATEWAY=${PUBLIC_NETWORK_GATEWAY:-172.24.4.225}
+PUBLIC_NETWORK_GATEWAY=${PUBLIC_NETWORK_GATEWAY:-172.24.4.1}
 PRIVATE_SUBNET_NAME=${PRIVATE_SUBNET_NAME:-"private-subnet"}
 PUBLIC_SUBNET_NAME=${PUBLIC_SUBNET_NAME:-"public-subnet"}
 
diff --git a/lib/neutron_thirdparty/nicira b/lib/neutron_thirdparty/nicira
index 3efb5a93b3..a24392cd4d 100644
--- a/lib/neutron_thirdparty/nicira
+++ b/lib/neutron_thirdparty/nicira
@@ -20,7 +20,7 @@ set +o xtrace
 NVP_GATEWAY_NETWORK_INTERFACE=${NVP_GATEWAY_NETWORK_INTERFACE:-eth2}
 # Re-declare floating range as it's needed also in stop_nicira, which
 # is invoked by unstack.sh
-FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.224/28}
+FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.0/24}
 
 function configure_nicira() {
     :
diff --git a/stack.sh b/stack.sh
index 22d184efd9..ce5fbd47e5 100755
--- a/stack.sh
+++ b/stack.sh
@@ -260,7 +260,7 @@ safe_chown -R $STACK_USER $DATA_DIR
 # from either range when attempting to guess the IP to use for the host.
 # Note that setting FIXED_RANGE may be necessary when running DevStack
 # in an OpenStack cloud that uses either of these address ranges internally.
-FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.224/28}
+FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.0/24}
 FIXED_RANGE=${FIXED_RANGE:-10.0.0.0/24}
 FIXED_NETWORK_SIZE=${FIXED_NETWORK_SIZE:-256}