Cloudflare 1.1.1.1 incident on June 27, 2024
Cloudflare 1.1.1.1 incident on June 27, 2024
On June 27, 2024, a small number of users globally may have noticed that 1.1.1.1 was unreachable or degraded. The root cause was a mix of BGP (Border Gateway Protocol) hijacking and a route leak.
I gave up their dns quite long ago, I was getting slow internet regularly and some day I discovered accidentally that it was their fault.
It's interesting that the internet is packed with search hits of complains that Cloudflare's DNS is slowing everything but Cloudflare representatives are quick to post followups pointing the finger everywhere else.
That's like the most trivial of theories one can test for.
Save response time every minute
while true; do /usr/bin/time -f "%e `date`" dig '@1.1.1.1' +noall programming.dev &>>/tmp/dns_clf_perf.txt; sleep 60; doneThen after a while (maybe a couple of days), check the worst numbers:
sort -n /tmp/dns_clf_perf.txt |tailRun the same script with a different DNS server at the same time, and compare numbers.
Dates included in case there are any patterns regarding the time of day/week.