Comment 9 for bug 1527902

I am able to perform dns lookups on a P+T box with -74 (and the OR has separatly confirmed -74 as affected), so this appears to not be systemic:

mru@grovel-x-p64p5:~$ cat /proc/version_signature
Ubuntu 3.13.0-74.118~precise1-generic 3.13.11-ckt30

mru@grovel-x-p64p5:~$ dig aaaa www.google.com @2001:4860:4860::8888

; <<>> DiG 9.8.1-P1 <<>> aaaa www.google.com @2001:4860:4860::8888
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33031
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.google.com. IN AAAA

;; ANSWER SECTION:
www.google.com. 299 IN AAAA 2a00:1450:4009:811::2004

;; Query time: 39 msec
;; SERVER: 2001:4860:4860::8888#53(2001:4860:4860::8888)
;; WHEN: Wed Dec 23 19:17:07 2015
;; MSG SIZE rcvd: 60

mru@grovel-x-p64p5:~$ sudo tcpdump -n host 2001:4860:4860::8888
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
19:19:51.930966 IP6 2001:470:6973:2:18f8:278f:cd6d:654e.52306 > 2001:4860:4860::8888.53: 55720+ AAAA? www.google.com. (32)
19:19:51.971448 IP6 2001:4860:4860::8888.53 > 2001:470:6973:2:18f8:278f:cd6d:654e.52306: 55720 1/0/0 AAAA 2a00:1450:4009:811::2004 (60)