---
name: dns-management
description: Hard constraints for modifying Bind9 DNS zone files.
globs: ["db.", ".zone"]
---

# Bos55 DNS Management Constraints

When modifying or generating Bind9 zone files, you MUST strictly adhere to the following rules:

1. **Serial Increment (CRITICAL)**
   - Every single time you modify a Bind9 zone file (e.g., `db.depeuter.dev`), you MUST increment the Serial number in the SOA record. Failure to do so will cause DNS propagation to fail.
2. **Domain Name Specificity**
   - Prefer a single, well-defined explicit domain (e.g., `nix-cache.depeuter.dev`) instead of creating multiple aliases or using magic values. Keep records clean and explicit.