25 Mar
2025
25 Mar
'25
4:24 p.m.
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-con...
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