> IPv6 is not yet that useful for external facing sites Google's NAT pricing only affects connections initiated by the VM (external load balancer traffic doesn

> IPv6 is not yet that useful for external facing sites Google's NAT pricing only affects connections initiated by the VM (external load balancer traffic doesn't use the NAT). So most of this traffic is going to be your servers talking to 3rd party APIs, update servers, etc. A lot of these services support IPv6 now, meaning your NAT costs would be lower if GCE supported IPv6.