[AusNOG] 1.1.1.1 DNS resolvers

[Andrew Yager]

On 2 April 2018 at 10:32, Terry Manderson <terry at terrym.net> wrote:

> I saw the blog post and already had some awareness that this was coming,
> but there is one question I have for Australian operators.
>
> How many operators promote services like 1.1.1.1 and 8.8.8.8 to their
> customers instead of operating their own recursive DNS infrastructure?
>
> And if you do, what was the driver and then risk mitigation position taken?
>

It's a good question. Historically we've advocated against it primarily
because we can't fix DNS performance issues related to infrastructure we
don't control/own. If your any cast resolver sends you to a CDN point in
Hong Kong instead of one in Sydney with 100ms extra latency… the provider
is powerless to stop it.

We've seen this issue with 8.8.8.8 before; and often are "fixing'
performance issues for customers by changing their resolvers back to our
own internal ones.

This one seems really fast, and quite reasonable in terms of results. I
guess CloudFlare have been pretty good at that for quite some time. Will be
interesting to see what happens with this though.

Andrew
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