[dns-operations] adobe download domain missconfiguration?

[Mark Andrews]

It's a missing period at the end of "swupdl.adobe.com.edgesuite.net"
resulting in ".wip4.adobe.com." being appended.  The cookie option
causes the query to go through to the backing nameserver.

Depending upon the nameserver version use

	server <address> { request-sit no; };	// 9.10.x (ignored in 9.11)
	server <address> { send-cookie no; };   // 9.11.x

to disable sending a cookie option

Mark

In message <CABaAVdRQsZSZ8N5qK4bzN=ez-p-uis-GpgAnp6xvXtYNndVeaw at mail.gmail.com>
, Manabu Sonoda writes:
> Adobe name servers return wrong CNAME using dns cookie.
> 
> I think use GTM and missconfiguration bind zones.
> I can't download Creative Cloud Apps....orz
> 
> below dig results from my server.
> 
> root at cdns300.lc.mimuret.net:/var/service/dns/conf/named#
> /var/service/dns/bind/bin/dig @192.150.16.247 swupdl.wip4.adobe.com.
> +cookie
> 
> ; <<>> DiG 9.11.0a1 <<>> @192.150.16.247 swupdl.wip4.adobe.com. +cookie
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36705
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;swupdl.wip4.adobe.com.         IN      A
> 
> ;; ANSWER SECTION:
> swupdl.wip4.adobe.com.  300     IN      CNAME
> swupdl.adobe.com.edgesuite.net.wip4.adobe.com.
> 
> ;; AUTHORITY SECTION:
> wip4.adobe.com.         30      IN      SOA     sj1gtm001.adobe.com.
> hostmaster.sj1gtm001.adobe.com. 1371 10800 3600 604800 60
> 
> root at cdns300.lc.mimuret.net:/var/service/dns/conf/named#
> /var/service/dns/bind/bin/dig @192.150.16.247 swupdl.wip4.adobe.com.
> +nocookie
> 
> ; <<>> DiG 9.11.0a1 <<>> @192.150.16.247 swupdl.wip4.adobe.com. +nocookie
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12791
> ;; flags: qr aa rd ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;swupdl.wip4.adobe.com.         IN      A
> 
> ;; ANSWER SECTION:
> swupdl.wip4.adobe.com.  600     IN      CNAME   swupdl.adobe.com.edgesuite.ne
> t.
> 
> ;; Query time: 148 msec
> ;; SERVER: 192.150.16.247#53(192.150.16.247)
> ;; WHEN: Thu Apr 07 22:45:23 JST 2016
> ;; MSG SIZE  rcvd: 94
> 
> Manabu Sonoda
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org