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Philip Homburg

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About the author

Philip Homburg worked on the measurement code and other firmware behind RIPE Atlas probes and anchors until leaving the RIPE NCC in 2022.

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What’s the Deal with IPv6 Link-Local Addresses?

What’s the Deal with IPv6 Link-Local Addresses?

8 min read

...or, how RIPE Atlas measurement data just got a little bit more complex. Some people say IPv6 is "96 more bits, no magic". And while this is true for most network operators, if you're a RIPE Atlas system programmer, you can run into interesting situations. In this article, we described how link-l…

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Troubleshooting RIPE Atlas Probes: USB Sticks

Troubleshooting RIPE Atlas Probes: USB Sticks

6 min read

Some of the third version of RIPE Atlas probes have recently had an issue with their USB sticks. We're investigating what may be causing this issue and have a possible solution, outlined below. (At the same time, we're also looking into a new hardware solution for the future.) If you've had trouble…

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A Visual Impression of Probe Lifetimes

A Visual Impression of Probe Lifetimes

3 min read

For a while now, the number of active RIPE Atlas probes has hovered around the 9,400 mark. This means that new probes are being connected at a fast enough rate to replace failing probes, but not enough to grow the network. At the same time, the version 3 probes have problems with their USB sticks. …

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