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At our school we've been having some weird network issues and I'd need some help pointing me into the right direction to start diagnosing them.

The main symptom we're having is that browsing the web is very slow. But it's not clear where it's coming from. From the images below you can see that different requests can have a large delay in very different parts of the request life cycle. (These are a subset of requests generated when going to https://www.hln.be/)

It seems I cant include images in this post (need 10 rep points), you can see the images here:

The speedtest results seem normal.
https://i.stack.imgur.com/B2KvF.png

Any tips are appreciated.

Jeroen Pelgrims
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  • Capture with wireshark and see if you can find something interesting in there. – Swisstone Sep 24 '20 at 21:17
  • Do a test run with only IPv6 and one with only IPv4, differences between those can pinpoint some potential causes. – anx Sep 24 '20 at 22:18

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