iljitsch.com

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Hi, I'm Iljitsch van Beijnum. This page has all posts about all subjects.

→ I Fooled Millions Into Thinking Chocolate Helps Weight Loss. Here's How.

I felt a queazy mixture of pride and disgust as our lure zinged out into the world.

It is way too easy to get bad research published and covered in the media, especially about nutrition.

Permalink - posted 2015-05-29

Review: the Braun Oral-B PRO 6000 electric toothbrush—with bluetooth!

I'll spare you the details, but I recently needed to up my game in the toothbrushing department. I've been brushing my teeth with an entry-level Oral-B electric toothbrush for almost a decade, but I thought I could do better with a more advanced one that provides a warning when you brush too hard. (This can damage your gums.) Turns out there's now a model that has bluetooth. After all, everything is better with bluetooth.

Full article / permalink - posted 2015-05-29

→ IPv4 Transfers in the RIPE NCC Service Region

Earlier this month, RIPE Labs had a lengthy blog post about transfers of IPv4 addresses within the RIPE region. A lot of addresses went from Romania to Saudi Arabia, but the rest of Europe and the Middle East has been busy, too. However:

In the subsequent months of January 2015 through to April 2015, levels of transfer were significantly lower. Because the RIPE NCC listing service continues to show strong demand, the lower amounts transferred may well be a sign that the market in the RIPE region is capped by availability; total demand cannot be met by available supplies. This may change after the recently accepted RIPE policy for inter-RIR transfers has been implemented.

It probably wasn't an accident that two of the sponsors of the RIPE-70 meeting were businesses that facilitate IPv4 address trading.

Permalink - posted 2015-05-28

Where's my fluoride?

Yesterday when I woke up, I wasn't worried at all about my fluoride levels. Then I started reading, and I became worried that I wasn't getting enough to keep my teeth healthy. After that, I read some more, and become somewhat worried I may be getting too much. All thanks to dr. Google.

Full article / permalink - posted 2015-05-27

Bring on the 2.5, 5 and 25 Gbps Ethernet!

I'm at the RIPE meeting in Amsterdam this week. Yesterday, one of the first presentations was one from Alcatel-Lucent's Greg Hankins: Evolution of Ethernet Speeds: What’s New and What’s Next.

Apparently, we're going to get some new Ethernet speeds in the (relatively) near future, such as 2.5, 5 and 25 Gbps. I can't wait!

Full article / permalink - posted 2015-05-12

RPKI is ready for real-world deployment

For some years now, the Regional Internet Registries have been rolling out RPKI. The Resource Public Key Infrastructure allows holders of IP addresses to authorize an autonomous system to inject those addresses in BGP. (See here for an overview of how RPKI works and more links.)

I've always thought it would be hard to deploy RPKI in the real world, because it's just way too easy for a certificate or ROA (route origination authorization) to expire. If that then leads to routes becoming invalid and the addresses in question being unreachable, that would be a good example of the cure being worse than the disease.

Fortunately, that's not the case: RPKI is ready for real-world deployment today.

Full article / permalink - posted 2015-04-30

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