The RIPE Atlas is an open measurement platform that collects measurement data (ping, traceroute, …) about Internet performance throughout the world. Yevheniya Nosyk describes in a blog post what happens on a typical day on this platform.

The Calypso project leverages traceroute data to provide detailed maps of the submarine cables.

Julia Evans has contributed new examples to the tcpdump manpage.

Flavio Luciani shares traffic graphs from an Indonesian IXP showing how Internet traffic changes during Ramadan.

In a series of posts on Mastodon, Kenneth Finnegan describes in detail what’s inside a 100 Gbps LR4 optic. Interesting read if you’d like to understand what’s inside these « connectors ».

Geoff Huston provides a nice explanation on how time is managed on the Internet.

A nice visualisation based on DNS MX records shows where email of 2,100 Swiss municipalities are hosted.

In a short article published in IEEE Spectrum, Malik Tatipamula and Vint Cerf describe the last 40 Years of Wireless Evolution in cellular networks and the evolution from 1G to the forthcoming 6G.

The IPv6 over nothing IETF draft proposes to use IPv6 without an underlying datalink layer.

TLS Encrypted Client Hello is now officially published as RFC9849. Samuel Henrique explains in a short blog post how to use ECH with curl on Debian.

In a short blog post, Mark Nottingham explains how he used Notebook LLM to analyze the progress of IETF working groups.

Another demonstration of the importance of network connectivity. In Nordic countries, a large fractions of the payments in shops are done online. To cope with the risks of massive network disruptions, a new law enables offline payments in case of major network disruptions.

A set of Claude skills to explore the 3GPP specifications, from 2G to 6G.

An interesting blog post showing how a cheap NTP server evolved over time to obtain 26 nanosecond clock accuracy.

Linus Torvalds has started to remove old networking code from the Linux kernel. This removal affects protocols such as AX.25 (amateur radio), ATM, and old Ethernet drivers.

Reflections on the implementation of the Carrier Pigeon Internet Protocol, RFC1149, 25 years later

This blog aims at encouraging students who read the open Computer Networking: Principles, Protocols and Practice ebook to explore new networking topics. You can follow this blog by subscribing to its RSS feed or by following @cnp3_ebook on mastodon. Feel free to share the posts that you find interesting on your preferred social network.