usfj.mil DNSSEC Outage: 2016-04-11

Updated: April 11, 2016

Overview

This page gives some details on the usfj.mil DNSSEC outage on April 11, 2016. It was the 15th DNSSEC outage of the year for usfj.mil.

Note: The usfj.mil DNSSEC administrators keep re-deploying an old, expired DNSKEY RRSIG. This causes fresh new outages. This particular outage follows a period of several hours of uptime which ended when the old DNSKEY RRSIG was put back into service, causing a denial of service to DNSSEC users. Non-DNSSEC users, including normal DNS and DNSCurve users, were unaffected and enjoyed full connectivity.

Timeline / DNSViz

OpenDNS and 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 usfj.mil during this outage.

With OpenDNS, queries succeed:

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

; <<>> DiG 9.4.2-P2 <<>> www.usfj.mil. @resolver1.opendns.com.
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16887
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

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

;; ANSWER SECTION:
www.usfj.mil. 5478 IN CNAME www.dodpw.defense.gov.edgesuite.net.
www.dodpw.defense.gov.edgesuite.net. 123 IN CNAME a1603.dscb.akamai.net.
a1603.dscb.akamai.net. 20 IN A 173.205.30.122
a1603.dscb.akamai.net. 20 IN A 173.205.30.130

;; Query time: 14 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Mon Apr 11 22:33:29 2016
;; MSG SIZE rcvd: 143

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

$ dig +dnssec www.usfj.mil. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> +dnssec www.usfj.mil. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 53379
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

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

;; Query time: 382 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Apr 11 22:33:29 2016
;; MSG SIZE rcvd: 41

dnscheck

dnscheck.labs.nic.cz archived a DNSSEC outage at 2016-04-11 22:42:43 (requires javascript).

dnscheck.iis.se archived a DNSSEC outage at 2016-04-11 22:42:06 (requires javascript).

Zonemaster

Zonemaster archived this usfj.mil DNSSEC outage.

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