Of long names...

Mukund Sivaraman muks at isc.org
Sun Mar 15 23:49:36 UTC 2015


On Sun, Mar 15, 2015 at 08:26:35AM -0400, Timothe Litt wrote:
> Discussing a 'you don't handle long names' issue that I discovered with
> an application's developer, I thought I'd create a test case or two for him.
> 
> I did, but they don't resolve.  I might be missing something, so some
> other eyes would be appreciated.
> 
> The test domain is hosted on godaddy's DNS.  (Because, well, it's a test
> domain.)
> 
> dns fingerprint (w3dt.net) claims their server is 'VeriSign ATLAS'  Does
> anyone have experience with this server?
> 
> The recursive servers queried are mine (bind) - I've flushed their
> caches.  I've also tried several web services that run DNS lookups; the
> results are consistent.  NXDOMAIN

The authoritative nameservers for litts.us are returning NXDOMAIN for
AAAA queries on these names:

[muks at totoro ~]$ dig -t NS litts.us

; <<>> DiG 9.9.6-P1-RedHat-9.9.6-8.P1.fc21 <<>> -t NS litts.us
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25029
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 5

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;litts.us.		IN	NS

;; ANSWER SECTION:
litts.us.	3600	IN	NS	ns71.domaincontrol.com.
litts.us.		3600	IN	NS	ns72.domaincontrol.com.

;; ADDITIONAL SECTION:
NS72.domaincontrol.com.	132465	IN	A	208.109.255.46
NS72.domaincontrol.com.	172484	IN	AAAA	2607:f208:302::2e
ns71.domaincontrol.com.	132465	IN	A	216.69.185.46
ns71.domaincontrol.com.	172484	IN	AAAA	2607:f208:206::2e

;; Query time: 83 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Mar 16 05:13:23 IST 2015
;; MSG SIZE  rcvd: 185

[muks at totoro ~]$ dig +norecurse @ns71.domaincontrol.com -t aaaa oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us

; <<>> DiG 9.9.6-P1-RedHat-9.9.6-8.P1.fc21 <<>> +norecurse @ns71.domaincontrol.com -t aaaa oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 65035
;; flags: qr aa; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us. IN AAAA

;; AUTHORITY SECTION:
litts.us.	3600	IN	SOA	ns71.domaincontrol.com. dns.jomax.net. 2015031503 28800 7200 604800 3600

;; Query time: 86 msec
;; SERVER: 216.69.185.46#53(216.69.185.46)
;; WHEN: Mon Mar 16 05:14:53 IST 2015
;; MSG SIZE  rcvd: 216

[muks at totoro ~]$ dig +norecurse @ns72.domaincontrol.com -t aaaa oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us

; <<>> DiG 9.9.6-P1-RedHat-9.9.6-8.P1.fc21 <<>> +norecurse @ns72.domaincontrol.com -t aaaa oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 15081
;; flags: qr aa; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;oh-what-a-beautiful-morning.oh-what-a-beautiful-day.oh-what-a-wonderful-feeling.everythings-lost-in-the-hay.litts.us. IN AAAA

;; AUTHORITY SECTION:
litts.us.	3600	IN	SOA	ns71.domaincontrol.com. dns.jomax.net. 2015031503 28800 7200 604800 3600

;; Query time: 83 msec
;; SERVER: 208.109.255.46#53(208.109.255.46)
;; WHEN: Mon Mar 16 05:15:41 IST 2015
;; MSG SIZE  rcvd: 216


		Mukund
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