diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index d86a1c5a684..e6a085c177e 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -695,7 +695,7 @@ function create-network() {
     echo "Creating new network: ${NETWORK}"
     # The network needs to be created synchronously or we have a race. The
     # firewalls can be added concurrent with instance creation.
-    gcloud compute networks create --project "${PROJECT}" "${NETWORK}" --range "10.240.0.0/16"
+    gcloud compute networks create --project "${PROJECT}" "${NETWORK}" --mode=auto
   fi
 
   if ! gcloud compute firewall-rules --project "${PROJECT}" describe "${CLUSTER_NAME}-default-internal-master" &>/dev/null; then
diff --git a/cluster/gke/config-common.sh b/cluster/gke/config-common.sh
index f64b2f5801f..18015ec92d3 100644
--- a/cluster/gke/config-common.sh
+++ b/cluster/gke/config-common.sh
@@ -23,7 +23,6 @@ NUM_NODES="${NUM_NODES:-3}"
 ADDITIONAL_ZONES="${ADDITIONAL_ZONES:-}"
 CLUSTER_API_VERSION="${CLUSTER_API_VERSION:-}"
 NETWORK="${NETWORK:-default}"
-NETWORK_RANGE="${NETWORK_RANGE:-10.240.0.0/16}"
 FIREWALL_SSH="${FIREWALL_SSH:-${NETWORK}-allow-ssh}"
 GCLOUD="${GCLOUD:-gcloud}"
 CMD_GROUP="${CMD_GROUP:-}"
diff --git a/cluster/gke/util.sh b/cluster/gke/util.sh
index 95f91efb4cc..41a50503c34 100755
--- a/cluster/gke/util.sh
+++ b/cluster/gke/util.sh
@@ -142,7 +142,7 @@ function kube-up() {
   # Make the specified network if we need to.
   if ! "${GCLOUD}" compute networks --project "${PROJECT}" describe "${NETWORK}" &>/dev/null; then
     echo "Creating new network: ${NETWORK}" >&2
-    with-retry 3 "${GCLOUD}" compute networks create "${NETWORK}" --project="${PROJECT}" --range "${NETWORK_RANGE}"
+    with-retry 3 "${GCLOUD}" compute networks create "${NETWORK}" --project="${PROJECT}" --mode=auto
   else
     echo "... Using network: ${NETWORK}" >&2
   fi