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Jul 17, 2026How traceroute Really Works: TTL, ICMP Time-Exceeded, and Mapping a Path Hop by Hop
Build a real client → r1 → r2 → server path in containers, run traceroute, and capture the ICMP time-exceeded messages that turn a simple loop-prevention field into a hop-by-hop map.
Jul 17, 20268 min read0 reactions0 comments