afnic.fr DNSSEC Outage: 2016-07-24

Updated: July 24, 2016

Overview

This page gives some details on the afnic.fr DNSSEC outage on July 24, 2016. This is not the first afnic.fr DNSSEC outage.

Timeline / DNSViz

DNSSEC Debugger

Unlike DNSViz, Verisign's DNSSEC Debugger doesn't archive results, so here's a screenshot of my web browser's output from July 24, 2016:

July 24, 2016 afnic.fr DNSSEC outage

OpenDNS & Google Public DNS

OpenDNS does not support DNSSEC, instead supporting DNSCurve. Google Public DNS currently supports only DNSSEC, and thus, Google's users saw SERVFAIL for queries under afnic.fr during this outage.

$ dig www.afnic.fr. @resolver1.opendns.com.

; <<>> DiG 9.4.2-P2 <<>> www.afnic.fr. @resolver1.opendns.com.
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4713
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.afnic.fr. IN A

;; ANSWER SECTION:
www.afnic.fr. 168360 IN CNAME www.nic.fr.
www.nic.fr. 168360 IN CNAME web01.nic.fr.
web01.nic.fr. 600 IN A 192.134.5.5

;; Query time: 169 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Sun Jul 24 04:48:05 2016
;; MSG SIZE rcvd: 88

With Google Public DNS, because of DNSSEC, queries fail:

$ dig +dnssec www.afnic.fr. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> +dnssec www.afnic.fr. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32380
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;www.afnic.fr. IN A

;; Query time: 316 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sun Jul 24 04:48:05 2016
;; MSG SIZE rcvd: 41

dnscheck

dnscheck.labs.nic.cz shows a bogus DNSSEC delegation (requires javascript).

dnscheck.iis.se shows a bogus DNSSEC delegation (requires javascript).

Zonemaster

zonemaster.net archived "Delegation from parent to child is not properly signed (no_dnskey)."

zonemaster.fr archived "Delegation from parent to child is not properly signed (no_dnskey)."

Logfile examples