Network diagnostic tool that goes beyond traceroute: MTU discovery, NAT
detection, route flap alerts, IX identification, and more.

Features:
- Fast continuous path monitoring with detailed hop statistics
- Multiple simultaneous targets - trace to several destinations at once
- Paris/Dublin traceroute - multi-flow probing for ECMP path enumeration
- ECMP classification - distinguishes per-flow vs per-packet load balancing
- Path MTU discovery - binary search for maximum unfragmented size
- NAT detection - identify when NAT devices rewrite source ports
- Route flap detection - alert on path changes indicating routing instability
- Rich enrichment - ASN, GeoIP, reverse DNS, IX detection (PeeringDB)
- MPLS label detection from ICMP extensions
- ICMP, UDP, TCP probing with auto-detection
- Great TUI with themes, sparklines, and session export
- Update notifications - in-app banner when new versions are available
- Scriptable - JSON, CSV, text report, and line-delimited JSON streaming output
- Trace diffing - compare two saved sessions for path and latency changes
- Daemon mode + Prometheus exporter - headless continuous monitoring with
  /metrics and /healthz
- Docker-ready - official Dockerfile, graceful SIGTERM shutdown