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!

#policy-routing Articles

Mon 23 March 2026
FreeBSD

Dual-FIB Policy Routing on FreeBSD: Two Upstreams, One Server, Zero Confusion

How to run a FreeBSD server with two completely independent internet uplinks - a physical provider and a BGP tunnel - using dual-FIB routing tables, PF’s rtable and reply-to directives, and a single bridge that carries NAT’d, routed, and pure public jail traffic simultaneously.