...
Done binding instance vms > ha_proxy_z1/0 (00:00:01)
Done binding instance vms > login_z1/0 (00:00:01)
Done binding instance vms > nats_z1/0 (00:00:01)
Done binding instance vms > postgres_z1/0 (00:00:01)
Done binding instance vms > api_z1/0 (00:00:01)
Done binding instance vms > etcd_leader_z1/0 (00:00:01)
Done binding instance vms > loggregator_z1/0 (00:00:01)
Done binding instance vms > loggregator_trafficcontroller_z1/0 (00:00:01)
Done binding instance vms > uaa_z1/0 (00:00:01)
Done binding instance vms > runner_z1/0 (00:00:01)
Done binding instance vms > hm9000_z1/0 (00:00:01)
Done binding instance vms > router_z1/0 (00:00:01)
Done binding instance vms (00:00:01)
Started preparing configuration > Binding configuration. Failed: Error filling in template `ctl.erb' for `etcd_leader_z1/0' (line 26: undefined method `collect' for "(( .properties.nats.machines ))":String) (00:00:01)
Error 100: Error filling in template `ctl.erb' for `etcd_leader_z1/0' (line 26: undefined method `collect' for "(( .properties.nats.machines ))":String)
Reverting to 164 makes everything okay.