NetLdn #77 – 08/10/2026

Henry’s Den, Downstairs @ Finch’s
12a Finsbury Square, London EC2A 1AN

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.


Talk 1: Fibre To The Tent

A look at the network infrastructure for Electromagnetic Field, a 3500 capacity outdoor Hacker Camp in rural Herefordshire (2026 edition)

Presenter: Basil Fillan / Luke Granger-Brown (Electromagnetic Field)


Lightning Talk 2: ​DNSSEC KSK Roll on Sunday

The DNSSEC KSK Key is rolling on Sunday. What this means and what might break.

Presenter: David Groves (Nominet)

Talk 3: ​Transit Free, Tier ones, and the hopefuls

Inside the very “center” of the internet is a set of networks run by companies who have a special arrangement with each other that the rest of us do not have, These are sometimes called the “tier ones” or “transit free networks”

However, are all of these “transit free networks” actually free of transit, and what does that actually mean?

In this talk will go over some of the bgp.tools data that I have been analyzing that will show have some of the T1 peering issues, where gaps exist, and how certain networks are getting closer to becoming a them, and what are the problems they will probably face, and finally does a network even want to be in this situation

Presenter: Ben Cartwright-Cox (bgp.tools)


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

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Author: Richard Patterson

Network Architect

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