Experiment report: IPv6-only VPS as secondary DNS for my personal zones.
Setup: OVHcloud 2 EUR/month instance, no legacy IP. Primary on another box with dual-stack. Monitored for 30 days.
Findings:
- Google, Cloudflare, Quad9 resolvers all handle it fine.
- My registrar's panel rejects AAAA-only glue records with "invalid nameserver." The ticket said... "IPv6 is not supported for DNS configuration at this time." Dated 2025, somehow.
Workaround: used a different registrar's DNS hosting as intermediary. Not ideal. Documented steps below if anyone wants to replicate.
reported. resolved. repeat.