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toke

Toke Høiland-Jørgensen

New blog post: "ECN, ECMP and anycast: a cocktail of broken connections"

Just over five years ago, I was seeing weird "connection reset" errors when trying to connect to Cloudflare sites.

This turned out be due to an unholy alliance between ECN, ECMP and anycast routing, and figuring this out was quite interesting.

I meant to write up the experience in a blog post at the time, but somehow never got around to it. I was just reminded of this, so better late than never!

https://blog.tohojo.dk/2025/03/ecn-ecmp-and-anycast-a-cocktail-of-broken-connections.html
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asynchronaut@fosstodon.org

Holger Hoffstätte

Reply to @toke

@toke Excellent detective story!

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