Over the last couple days, I've seen networking issues in our kubernetes cluster(GKE), most notably that a node immediately closed connections to a Service's port(NodePort). According to the the user guide, the node port should be available on all nodes

each Node will proxy that port (the same port number on every Node) into your Service.

The node appears up, and if you run kubectl get node it is marked as ready, however it will be actively refusing connections on Service ports. Is there a way, other than to delete the node and have it get rebuilt to get a node to start accepting traffic on those ports?