Networking

How nf_conntrack Overflow Causes Intermittent UDP Tracker Downtime with Docker

A subtle Linux kernel resource exhaustion silently drops UDP packets when running a BitTorrent tracker behind Docker bridge networking. No application error, no socket counter — just intermittent timeouts and a self-recovery cycle. Here is how to diagnose it, fix it, and make sure the fix survives a reboot.

How to Run a UDP Tracker Behind a Floating IP on Ubuntu

A practical guide to running a UDP BitTorrent tracker behind floating IPs (also known as static, reserved, or elastic IPs) on Ubuntu, including policy routing, Docker IPv6 networking, and SNAT for correct reply paths.