The services behind it. Migrated my entire docker compose stack to IPv6-only on a HostHatch VPS three months ago. Reverse proxy handles the odd legacy client via Cloudflare tunnel for now. Here's what broke and what didn't:
- My home ISP (cable, US midwest): no IPv6 at all, had to use HE tunnelbroker
- Old android phone on lineageos: fine actually
- Some "enterprise" monitoring tools: hardcoded IPv4 literals everywhere
- My mother's ability to visit the site: zero
Waiting for the day I can drop the tunnel entirely. Not there yet but closer than I expected.