docs: clarify Knot DNS and PowerDNS are not implemented backends 📝

Add explicit note that only nsd, bind, and coredns_mysql are available —
Knot and PowerDNS are listed as architectural context only.
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2026-02-20 06:59:12 +13:00
parent 6e96e78376
commit 4a4b4f2b98

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@@ -303,6 +303,8 @@ The container image ships with **both NSD and BIND9** installed. The entrypoint
- **Need zero-interruption zone swaps:** Knot DNS (RCU — serves old zone to in-flight queries while atomically swapping in the new one).
- **Need an HTTP API for zone management:** PowerDNS Authoritative with its native HTTP API.
> **Note:** Knot DNS and PowerDNS backends are **not implemented** in directdnsonly — they are listed here as architectural context only. Implemented backends: `nsd`, `bind`, `coredns_mysql`. Pull requests for additional backends are welcome.
---
## CoreDNS MySQL Backend — Required Fork