Curious Cloudflare DNS behavior

Saku Ytti saku at ytti.fi
Sat May 30 18:58:56 UTC 2020


[This post may portray opinions as facts, click to see the post]

On Sat, 30 May 2020 at 21:55, Constantine A. Murenin <mureninc at gmail.com> wrote:
>
> When you're not paying for service, you're not the customer, you're the product.
>
> I don't understand why anyone, especially anyone frequenting NANOG, would use Cloudflare for their DNS.
>
> Cloudflare runs a racket business, and their whole business model depends on them being a monopoly; plus people buying into the vapourware that they offer.  When have monopolies been good for any industry?  There's plenty of evidence of Cloudflare 1.1.1.1 not working correctly; I'm sure one of their employees (or the CTO!) will show up shortly to say otherwise!
>
> C.
>
> On Fri, 29 May 2020 at 12:31, John Sage <jsage at finchhaven.com> wrote:
>>
>> FULL DISCLOSURE: this is an end-user issue, but one that might have some
>> operational relevance, particularly if anyone from Cloudflare DNS is on
>> the list
>>
>> EXECUTIVE SUMMARY: twice in six weeks Cloudflare DNS on my new Netgear
>> Orbi cable modem/mesh WiFi hotspot has completely lost track of one (and
>> only one that I know of) prominent US domain: usbank dot com
>>
>> Internet provider: Comcast/Xfinity "Extreme Pro+"
>>
>> Dynamic IP address via Comcast that hasn't changed in six-seven years
>>
>> New Netgear Orbi cable modem, configured with DNS through Cloudflare
>> (1.1.1.1 and 1.0.0.1)
>>
>> Again, twice in 6 weeks Cloudflare DNS seems to loose complete track of
>> usbank dot com as a domain
>>
>> Symptoms: Firefox on Ubuntu Linux returns that little puzzled dinosaur
>> cartoon thing and "We can't seem to find this website right now"
>>
>> BUT ALSO:
>>
>> Each one of ping, traceroute, dig and host returns
>>
>> Host usbank . com not found: 2(SERVFAIL)
>>
>> or some variant thereof
>>
>> Everything else works "just fine" as the saying goes
>>
>> And the Cloudflare DNS drop lasted for days the first time around
>>
>> I can switch over to Google DNS (8.8.8.8 and 8.4.4.8) in the Orbi and
>> immediately fix the problem
>>
>> So. Seems odd that Cloudflare DNS would apparently loose complete track
>> of a major US domain name like usbank dot com
>>
>> Or am I missing something?
>>
>>
>> - John
>> --
>> John Sage
>> FinchHaven Digital Photography
>> Email: jsage at finchhaven.com
>> Web: https://finchhaven.smugmug.com/
>> Old web: http://www.finchhaven.com/
>>
>>
>


-- 
  ++ytti



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