Neat. Can we please add it to the documentation?
I asked this once before, it went unanswered: New Feature: Application Private IPs - #6 by ignoramous
A related Q: Is connecting straight to the public IPv6 endpoint of the Machine guarantee to wake it up?
nb these still work differently to fly deploy -a <machine-app>…which I’ve attempted to fix in a PR request I sent: Improvements to deploy and run commands for machines by ignoramous · Pull Request #1327 · superfly/flyctl · GitHub