[dns-operations] anybody from akadns here who can explain this referral?

[Mark Andrews]

> my three questions are, why is there a referral at all,

	Out of zone CNAME.   akamai.ec9.net != akamai.net

> why is it upward,

	I don't think the servers for akamai.ec9.net serve g.akamai.net
	or akamai.net or net so the next best thing is ".".

> and why is it incomplete?


> re:
> 
> ; <<>> DiG 9.4.0b4 <<>> @ns1-137.akam.net. www.akamai.ec9.net. in a
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34893
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 8, ADDITIONAL: 8
> ;; WARNING: recursion requested but not available
> 
> ;; QUESTION SECTION:
> ;www.akamai.ec9.net.            IN      A
> 
> ;; ANSWER SECTION:
> www.akamai.ec9.net.     21600   IN      CNAME   a152.g.akamai.net.
> 
> ;; AUTHORITY SECTION:
> .                       1000    IN      NS      J.ROOT-SERVERS.net.
> .                       1000    IN      NS      C.ROOT-SERVERS.net.
> .                       1000    IN      NS      F.ROOT-SERVERS.net.
> .                       1000    IN      NS      K.ROOT-SERVERS.net.
> .                       1000    IN      NS      G.ROOT-SERVERS.net.
> .                       1000    IN      NS      E.ROOT-SERVERS.net.
> .                       1000    IN      NS      A.ROOT-SERVERS.net.
> .                       1000    IN      NS      D.ROOT-SERVERS.net.
> 
> ;; ADDITIONAL SECTION:
> J.ROOT-SERVERS.net.     1000    IN      A       192.58.128.30
> C.ROOT-SERVERS.net.     1000    IN      A       192.33.4.12
> F.ROOT-SERVERS.net.     1000    IN      A       192.5.5.241
> K.ROOT-SERVERS.net.     1000    IN      A       193.0.14.129
> G.ROOT-SERVERS.net.     1000    IN      A       192.112.36.4
> E.ROOT-SERVERS.net.     1000    IN      A       192.203.230.10
> A.ROOT-SERVERS.net.     1000    IN      A       198.41.0.4
> D.ROOT-SERVERS.net.     1000    IN      A       128.8.10.90
> 
> ;; Query time: 22 msec
> ;; SERVER: 193.108.91.137#53(193.108.91.137)
> ;; WHEN: Sun Mar  2 16:39:46 2008
> ;; MSG SIZE  rcvd: 325
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org