diff --git a/manila/network/neutron/api.py b/manila/network/neutron/api.py
index d7931270a5..b19d66df4d 100644
--- a/manila/network/neutron/api.py
+++ b/manila/network/neutron/api.py
@@ -241,13 +241,15 @@ class API(object):
             raise exception.NetworkException(code=e.status_code,
                                              message=e.message)
 
-    def subnet_create(self, tenant_id, net_id, name, cidr):
+    def subnet_create(self, tenant_id, net_id, name, cidr, no_gateway=False):
         subnet_req_body = {'subnet': {}}
         subnet_req_body['subnet']['tenant_id'] = tenant_id
         subnet_req_body['subnet']['name'] = name
         subnet_req_body['subnet']['network_id'] = net_id
         subnet_req_body['subnet']['cidr'] = cidr
         subnet_req_body['subnet']['ip_version'] = 4
+        if no_gateway:
+            subnet_req_body['subnet']['gateway_ip'] = None
         try:
             return self.client.create_subnet(
                 subnet_req_body).get('subnet', {})
diff --git a/manila/share/drivers/service_instance.py b/manila/share/drivers/service_instance.py
index 9fc2e4821e..a3e02c83d3 100644
--- a/manila/share/drivers/service_instance.py
+++ b/manila/share/drivers/service_instance.py
@@ -893,7 +893,8 @@ class NeutronNetworkHelper(BaseNetworkhelper):
                 network_data['service_subnet'] = (
                     self.neutron_api.subnet_create(
                         self.admin_project_id, self.service_network_id,
-                        subnet_name, self._get_cidr_for_subnet()))
+                        subnet_name, self._get_cidr_for_subnet(),
+                        self.connect_share_server_to_tenant_network))
 
         network_data['ports'] = []
 
diff --git a/releasenotes/notes/do-not-create-default-route-66ff4199b60e35c7.yaml b/releasenotes/notes/do-not-create-default-route-66ff4199b60e35c7.yaml
new file mode 100644
index 0000000000..c7d399d3d2
--- /dev/null
+++ b/releasenotes/notes/do-not-create-default-route-66ff4199b60e35c7.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - default route for service subnet wouldn't be created if
+    connect_share_server_to_tenant_network is on