Curious Cloudflare DNS behavior

John Sage jsage at
Sat May 30 22:19:05 UTC 2020

On 5/30/20 11:58 AM, Saku Ytti wrote:
> [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> 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.
[promised myself I wouldn't get pulled off into any smoldering flamewars]

[oh well. fools rush in &c &c &c]

Actually I used to run a caching-only nameserver using bind, as well as 
my own email server using sendmail, behind an ipchains/iptables firewall 
on a Linux box that was also running snort.

This would have been about (counts fingers; toes) maybe 1998-99.

So I have done this for myself, thank-you-very-much.

Times are a little more complicated now and I've come to want my own 
personal life to be a little simpler, again, thank-you-very-much.

Then (or finally) not to be pedantic, but I did open with:

 >> 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


No one should say they weren't warned.


- John
John Sage
FinchHaven Digital Photography
Box 2541, Vashon, WA 98070
Email: jsage at
Old web:
Cell: 206.595.3604

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