Problems Solved

Random real tech issues that we decided to post about!

OPNsense Networking

OPNsense Failover Kills States When No Viable Failover Target Exists

Months of stable OPNsense operation, then intermittent DNS hangs across every device. The cause: dpinger declaring the WAN gateway down based on ISP latency, triggering state killing with no failover target. The bug report was closed as a "configuration issue."

February 16, 2026 6 min read
Safari QUIC

Safari Hanging on Page Reloads? OPNsense, QUIC.

Spent a week debugging Safari hanging on page reloads. Turns out it was my OPNsense firewall's UDP timeout killing idle QUIC connections. Here's how to fix it.

December 2, 2025 6 min read