Add create subnet operation
diff --git a/openstack/networking/v2/subnets/urls.go b/openstack/networking/v2/subnets/urls.go
index 2cf128b..485f97a 100644
--- a/openstack/networking/v2/subnets/urls.go
+++ b/openstack/networking/v2/subnets/urls.go
@@ -19,3 +19,7 @@
 func GetURL(c *gophercloud.ServiceClient, id string) string {
 	return ResourceURL(c, id)
 }
+
+func CreateURL(c *gophercloud.ServiceClient) string {
+	return RootURL(c)
+}