Private Networking for MicroVM Fleets with WireGuard and IPv6

After getting machines to boot reliably, networking was the next thing that forced me to slow down and think properly. Private networking sounds simple when you say it quickly. "Just let the machines talk to each other." Then you try to do it across hosts, across regions, across reboots, without handing every guest a pile of custom firewall rules and mystery routing. That is where the clean model…