Larvitz Blog
Mastodon

Welcome to Larvitz Blog! I’m Christian, a Cloud Consultant by day and FreeBSD enthusiast by night, with over 20 years in enterprise IT. Here I write about FreeBSD jails, PF firewalling, self-hosting, Linux system administration, and anything that’s cleanly engineered. Most articles are hands-on guides born from running my own infrastructure, from dual-stack networking and Ansible automation to hosting a Mastodon instance on FreeBSD.

Have a question or want to discuss something? Find me on the Fediverse at @Larvitz@burningboard.net. I’m always happy to chat!

#icmp Articles

IPv6 Foundations: The Internet Protocol You Should Already Be Using

A laid-back tour through the basics of IPv6: how the addresses are built, how to shorten them without losing your mind, how they map onto the IPv4 you already know, and how hosts configure themselves with SLAAC. Plus a short sidebar on NDP and why blocking ICMP on an IPv6 network is a self-inflicted wound. The premise throughout: IPv6 is the current internet protocol, IPv4 is a relic we are still dragging around, and dual-stack is a burden, not a destination.