af.mil DNSSEC Outage: 2015-04-28 to 2015-04-29

Updated: April 29, 2015

Overview

This page gives some details on the af.mil DNSSEC outages beginning April 28, 2015, and continuing to April 29, 2015. The outage began with subdomains and then expanded to all of af.mil. The outage lasted about a day.

Verisign's DNSSEC Debugger

Verisign doesn't archive test results, unlike DNSViz. So here's a screenshot I took on April 29, 2015:

af.mil dnssec outage

Timeline / DNSViz

af.mil failures:

Subdomain failures from earlier in the day on April 28, 2015:

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 af.mil during this outage.

With OpenDNS, queries succeed:

$ dig www.af.mil. @resolver1.opendns.com

; <<>> DiG 9.4.2-P2 <<>> www.af.mil. @resolver1.opendns.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29681
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.af.mil. IN A

;; ANSWER SECTION:
www.af.mil. 300 IN CNAME www.af.mil.edgesuite.net.
www.af.mil.edgesuite.net. 300 IN CNAME a499.dscb.akamai.net.
a499.dscb.akamai.net. 20 IN A 23.212.53.206
a499.dscb.akamai.net. 20 IN A 23.212.53.196

;; Query time: 175 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Wed Apr 29 15:41:59 2015
;; MSG SIZE rcvd: 129

With Google Public DNS, with DNSSEC, queries fail:

$ dig www.af.mil. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> www.af.mil. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 30636
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.af.mil. IN A

;; Query time: 96 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Apr 29 15:42:04 2015
;; MSG SIZE rcvd: 28

dnscheck

dnscheck.iis.se archived a DNSSEC outage at 2015-04-28 18:54:02 (requires javascript).

dnscheck.labs.nic.cz archived a DNSSEC outage at 2015-04-28 18:54:38 (requires javascript).

Zonemaster

Zonemaster archived this af.mil DNSSEC outage.

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