Bits, Bytes, & Radio Waves

A quiet journey through discovery and understanding.

  • Building a Dual-Stack BIND 9 DNS Infrastructure on Rocky Linux

    Built from scratch on Rocky Linux 10.1 Minimal, this post walks through deploying BIND 9 in a primary/secondary configuration with dual-stack IPv4/IPv6. It covers directory layout, SELinux permissions, firewall rules, recursive forwarding, zone transfer behavior, and the quirks of IPv6 reverse DNS (nibble format), with validation commands to confirm everything works.

  • My Linux Customizations

    An living post where I can keep Linux customizations documented for easy reference.

  • Converging to VCF 9.0.1 from VCF 5.1

    Can an existing VMware Cloud Foundation environment—already drifted from its original Bill of Materials—be converged into a new VCF deployment? This post explores that question through a deliberate, lab-based VCF 5.1 to VCF 9.0.1 convergence, documenting what works, what breaks, and what actually matters.

Notes from practice

I use this site to document systems, configurations, and lessons learned as I work through real problems—both professionally and through personal experimentation. The goal is clarity: understand how something works, explain why it behaves the way it does, and make it reliable and repeatable.

These notes are written primarily for myself, but shared openly in case they help someone else avoid a dead end or reduce frustration. If you’d like to learn more, visit the About page.

If you have questions or comments, you’re always welcome to contact me.

Aaron Rombaut

Technologist & Writer