[dns-operations] Any Google DNS admins around?

Chris Adams cma at cmadams.net
Fri May 11 13:02:02 UTC 2018

The reverse DNS for Google Fiber's IPv6 allocation is broken, which
causes annoying lookup pauses.  Reverse DNS for 2605:a600::/31 is
delegated by ARIN to ns{1..4}.google.com, but those servers return
REFUSED for lookups (which means recursive servers try them all, then
return SERVFAIL).

The zones should at least be stubbed out with SOA and NS records, so
they return NXDOMAIN (it would be nicer to actually put some network
infrastructure in there so traceroutes and such gave useful info).

$ dig +norec -x 2605:a600:: @ns1.google.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6_9.5 <<>> +norec -x 2605:a600:: @ns1.google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 50058
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0


;; Query time: 15 msec
;; SERVER: 2001:4860:4802:32::a#53(2001:4860:4802:32::a)
;; WHEN: Fri May 11 08:00:35 2018
;; MSG SIZE  rcvd: 90

Chris Adams <cma at cmadams.net>

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