dnscrypt.pl DNSSEC Outage: 2017-06-11/13

Updated: June 15, 2017

Overview

This page gives some details on the dnscrypt.pl DNSSEC outage from June 11 to June 13, 2017. This site has had multiple DNSSEC outages.

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 June 12, 2017:

June 12, 2017 dnscrypt.pl DNSSEC outage

OpenDNS & Google Public DNS

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

With OpenDNS, without DNSSEC, queries succeed:

$ dig dnscrypt.pl. @resolver1.opendns.com.

; <<>> DiG 9.4.2-P2 <<>> dnscrypt.pl. @resolver1.opendns.com.
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34238
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;dnscrypt.pl. IN A

;; ANSWER SECTION:
dnscrypt.pl. 86400 IN A 178.62.233.48

;; Query time: 174 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Sun Jun 11 21:33:38 2017
;; MSG SIZE rcvd: 45

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

$ dig +dnssec dnscrypt.pl. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> +dnssec dnscrypt.pl. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 22501
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;dnscrypt.pl. IN A

;; Query time: 336 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sun Jun 11 21:33:38 2017
;; MSG SIZE rcvd: 40

drill trace

Since DNSSEC contains so much garbage, I put the complete drill trace into its own file, with the relevant portion below (emphasis added):

;; Domain: dnscrypt.pl.
[B] dnscrypt.pl. 86400 IN DNSKEY 256 3 5 ;{id = 1651 (zsk), size = 1024b}
dnscrypt.pl. 86400 IN DNSKEY 257 3 5 ;{id = 65416 (ksk), size = 2048b}
dnscrypt.pl. 86400 IN DNSKEY 256 3 13 ;{id = 55894 (zsk), size = 256b}
dnscrypt.pl. 86400 IN DNSKEY 256 3 7 ;{id = 1802 (zsk), size = 1024b}
dnscrypt.pl. 86400 IN DNSKEY 257 3 13 ;{id = 55059 (ksk), size = 256b}
dnscrypt.pl. 86400 IN DNSKEY 257 3 7 ;{id = 5991 (ksk), size = 2048b}
[B] dnscrypt.pl. 86400 IN A 178.62.233.48
;; Error: No keys with the keytag and algorithm from the RRSIG found
;;[S] self sig OK; [B] bogus; [T] trusted

dns.google.com

dns.google.com is related to but seperate from Google Public DNS. During this DNSSEC outage, dns.google.com showed the following for dnscrypt.pl: June 12, 2017 dnscrypt.pl DNSSEC outage, dns.google.com

Logfile examples