contact with One & One ?

Paul Stewart paul at
Fri Oct 14 14:20:16 CEST 2016

Yes and my understanding with ECMP on the network side is that this is exactly what’s happening … and that’s what Cloudflare blog entry is referring to as well …

I need to dig into this further - their code on Github for the fix I don’t believe will work in our network architecture…  although we are thinking of a redesign on that area so now would be a great chance to fix this too :)

> On Oct 14, 2016, at 8:17 AM, Mikael Abrahamsson <swmike at> wrote:
> On Fri, 14 Oct 2016, JORDI PALET MARTINEZ wrote:
>> Up to now, every time I’ve seen this problem was just related to ICMPv6 being filtered, as many folks do in IPv4 …
> I know several cases where the problem was that the load balancer didn't forward the ICMPv6 PTB to the correct host and didn't handle it itself. No filtering, just bad vendor implementation or "oh, didn't think of that".
> That's why I don't like people using the word "filtering", because this not working isn't always intentional. "Filtering" implies intent.
> -- 
> Mikael Abrahamsson    email: swmike at

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