没有外部IP地址可以运行Google Cloud Dataflow吗？

Something we noticed while working on scaling up our usage of Google Cloud Dataflow was that we would start to run up against our quota on In-use IP addresses. We are aware that requesting a quota increase is an option (and have already done so and been approved as such for CPU's) but wanted to know if it is (or is going to be) possible to run Dataflow instances without external IP addresses (both for quota reasons and because of the cost of IP addresses).Something we noticed while working on scaling u