Building an eBPF-based SIP Monitor in Go

I recently built a SIP monitoring service that uses eBPF to capture SIP traffic directly in the Linux kernel and export metrics to Prometheus. The entire pipeline from packet to Prometheus metric takes ~3μs in userspace. Here's how it works and what I learned along the way. The Problem Monitoring SIP/VoIP infrastructure at scale requires tracking call success rates, active dialogs, and response codes — without adding latency to the signaling path. I wanted something that: Process