.hiv TLD DNSSEC Outage: 2018-12-06

Date: December 6, 2018

Overview

This page gives some details on the .hiv DNSSEC outage on December 6, 2018.

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 December 6, 2018:

December 6, 2018 .by DNSSEC outage

Google Public DNS: with and without DNSSEC

DNSSEC can be disabled in queries via the CD (checking disabled) bit. Let's compare DNS queries with and without DNSSEC. With DNSSEC, DNS queries result in SERVFAIL:

$ dig +dnssec ns hiv. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> +dnssec ns hiv. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 2905
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;hiv. IN NS

;; Query time: 39 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Dec 6 18:18:50 2018
;; MSG SIZE rcvd: 32

You have to disable DNSSEC to make DNS work:

$ dig +cd ns hiv. @8.8.8.8

; <<>> DiG 9.4.2-P2 <<>> +cd ns hiv. @8.8.8.8
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30751
;; flags: qr rd ra cd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;hiv. IN NS

;; ANSWER SECTION:
hiv. 21599 IN NS ns1.uniregistry.net.
hiv. 21599 IN NS ns2.uniregistry.info.
hiv. 21599 IN NS ns3.uniregistry.net.
hiv. 21599 IN NS ns4.uniregistry.info.

;; Query time: 170 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Dec 6 18:18:50 2018
;; MSG SIZE rcvd: 124

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: hiv.
;; Signature ok but no chain to a trusted key or ds record
[S] hiv. 86400 IN DNSKEY 256 3 7 ;{id = 29765 (zsk), size = 2048b}
hiv. 86400 IN DNSKEY 256 3 7 ;{id = 56208 (zsk), size = 2048b}
hiv. 86400 IN DNSKEY 257 3 7 ;{id = 43515 (ksk), size = 2048b}
hiv. 86400 IN DNSKEY 257 3 7 ;{id = 27525 (ksk), size = 2048b}
hiv. 86400 IN DNSKEY 257 3 7 ;{id = 51708 (ksk), size = 2048b}
[S] Existence denied: hiv. A
;;[S] self sig OK; [B] bogus; [T] trusted

Logfile examples