[NANOG] Re: ECN

[Toke Høiland-Jørgensen via NANOG <nanog () lists nanog org>]

Tim Durack <tdurack () gmail com> writes:

> Toke,
>
> Resurrecting an old thread, did you ever write this one up?

Hi Tim

Thank you for the reminder! No, I never did get around to writing
anything at the time. However, now that you reminded me, I collected my
old notes and posted this:

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

> I believe I have a customer reporting a similar problem with IPv6 TCP ECN
> probably ECMP resulting in RST coming back from anycast services
> (Cloudflare).
>
> Tricky one to debug, looking for similar reports...

Hoping the above is helpful :)

-Toke
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