af.mil DNSSEC Outage: 2016-08-06
Updated: August 8, 2016
Overview
This page gives some details on the af.mil DNSSEC outage on August 8, 2016.
Timeline / DNSViz
- 2016-08-06 18:54:56 UTC — expired RRSIGs
- 2016-08-06 18:55:58 UTC — expired RRSIGs
- 2016-08-06 19:01:10 UTC — last personally observed DNSSEC failure
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.
$ 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: 35486
;; 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 23.59.190.136
a499.dscb.akamai.net. 20 IN A 23.59.190.105
;; Query time: 136 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Sat Aug 6 18:54:03 2016
;; MSG SIZE rcvd: 129
With Google Public DNS, because of DNSSEC, queries fail:
$ dig +dnssec www.af.mil @8.8.8.8
; <<>> DiG 9.4.2-P2 <<>> +dnssec www.af.mil @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 5548
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;www.af.mil. IN A
;; Query time: 9 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sat Aug 6 18:54:03 2016
;; MSG SIZE rcvd: 39
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
- [1470510011] unbound[19809:0] info: validation failure <www.af.mil. A IN>: no keys have a DS with algorithm RSASHA256 from 132.3.13.10 for key af.mil. while building chain of trust
- [1470510044] unbound[29919:0] info: validation failure <www.af.mil. A IN>: signatures from unknown keys for CNAME from 65.182.224.172 and 2.22.230.64 and 132.3.13.10
- [1470510070] unbound[19809:0] info: validation failure <www.af.mil. A IN>: key for validation af.mil. is marked as invalid because of a previous validation failure <www.af.mil. A IN>: no keys have a DS with algorithm RSASHA256 from 132.3.13.10 for key af.mil. while building chain of trust