Image couldn't load - you don't seem to have IPv6 connectivity

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Hi, I'm Iljitsch van Beijnum. This is my personal blog. See for work and not-work related posts and for BGP (work) related information. Some of the blog posts here are in Dutch, others are in English.

After sunset

After sunset

Image link - posted 2019-12-04

Time to turn off IPv4 (just a little)

Another month, and we'll be living in the 2020s. And yet, 70% of the internet is still IPv4-only. (I'll be writing a story looking back on IPv6 progress the past decade in January.) So I thought: maybe I should draw a line in the sand and turn off IPv4 for my website. But then how will those 70% find me, and all the links to older content will be dead to much of the internet. Click below to continue reading.

Note: this is an example of the warning image, your IPv6 connectivity may be fine!

Full article / permalink - posted 2019-12-03 - 🇳🇱 Nederlandse versie

Tijd om IPv4 uit te zetten (een beetje)

Over een maand leven we in de jaren '20 van de 21e eeuw. En toch heeft 70% van het internet nog steeds alleen maar IPv4. (In januari schrijf ik een verhaal dat terugkijkt naar de voortgang van IPv6 in het afgelopen decennium.) Dus ik dacht: misschien moet ik een streep trekken en IPv4 uitschakelen voor mijn website. Maar dan kan 70% me niet meer vinden, en de links naar oudere artikelen zijn dan dood voor een groot deel van het internet. (Klik beneden om verder te lezen.)

Let op: dit is een voorbeeld van de waarschuwing, je IPv6-connectiviteit kan prima in orde zijn.

Volledig artikel / permalink - geplaatst 2019-12-03 - 🇺🇸 English version

→ America is not the land of the free but one of monopolies so predatory they imperil the nation

Excellent piece by Observer/Guardian columnist Will Hutton based on the work of economist Thomas Philippon:

The news is that over the last 20 years per capita EU incomes have grown by 25% while the US’s have grown 21%


The US economy is becoming increasingly harmed by ever less competition, with fewer and fewer companies dominating sector after sector – from airlines to mobile phones.


But why has this happened now? Philippon has a deadly answer. A US political campaign costs 50 times more than one in Europe in terms of money spent for every vote cast. [...] Corporations want a return on their money, and the payback is protection from any kind of regulation, investigation or anti-monopoly policy that might strike at their ever-growing market power.

A real eye-opener.

Permalink - posted 2019-12-02

Slides: AS paths: long, longer, longest

Presentation slides from my lightning talk "AS paths: long, longer, longest" at the RIPE-79 meeting in Rotterdam, 18 October 2019.

Permalink - posted 2019-11-29

Europe runs out of IPv4 addresses even further, what now?

Less than three months ago I wrote about how the uptake of the remaining IPv4 addresses at RIPE was accelerating, with the RIPE NCC likely to run out of the addresses set aside in the "last /8" before the end of the year. And so they did, two days ago. So as of this week, it's no longer possible to request address space in the RIPE service region (Europe, former Soviet Union, Middle East) and get them within a somewhat predictable period...

Full article / permalink - posted 2019-11-27

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