[dns-operations] does anybody know why yahoo+akamai are doing this?

[Peter Dambier]

Paul Vixie wrote:
> as i continue to puzzle about the query storms seen at the root name servers,
> the fact that all five of yahoo.com's nameservers respond to their most popular
> query with a meaningless and unnecessary root-referral, strikes me as notable.
> 
> (and as someone who thinks he knows what assertions the dns protocol is capable
> of asserting, i do not know what could be intended or meant by this encoding.)
> 
> ; <<>> DiG 9.4.0a3 <<>> www.yahoo.com a @ns5.yahoo.com
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46514
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 13, ADDITIONAL: 0
> ;; WARNING: recusion requested but not available
> 
> ;; QUESTION SECTION:
> ;www.yahoo.com.                 IN      A
> 
> ;; ANSWER SECTION:
> www.yahoo.com.          300     IN      CNAME   www.yahoo.akadns.net.
> 
> ;; AUTHORITY SECTION:
> .                       3600000 IN      NS      A.ROOT-SERVERS.net.
> .                       3600000 IN      NS      B.ROOT-SERVERS.net.
> .                       3600000 IN      NS      C.ROOT-SERVERS.net.
> .                       3600000 IN      NS      D.ROOT-SERVERS.net.
> .                       3600000 IN      NS      E.ROOT-SERVERS.net.
> .                       3600000 IN      NS      F.ROOT-SERVERS.net.
> .                       3600000 IN      NS      G.ROOT-SERVERS.net.
> .                       3600000 IN      NS      H.ROOT-SERVERS.net.
> .                       3600000 IN      NS      I.ROOT-SERVERS.net.
> .                       3600000 IN      NS      J.ROOT-SERVERS.net.
> .                       3600000 IN      NS      K.ROOT-SERVERS.net.
> .                       3600000 IN      NS      L.ROOT-SERVERS.net.
> .                       3600000 IN      NS      M.ROOT-SERVERS.net.
> 
> ;; Query time: 84 msec
> ;; SERVER: 216.109.116.17#53(216.109.116.17)
> ;; WHEN: Sun Mar 19 07:53:28 2006
> ;; MSG SIZE  rcvd: 273
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> 

; <<>> DiG 9.1.3 <<>> -t any www.microsoft.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33270
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.microsoft.com.             IN      ANY

;; ANSWER SECTION:
www.microsoft.com.      3600    IN      CNAME   toggle.www.ms.akadns.net.
toggle.www.ms.akadns.net. 300   IN      CNAME   g.www.ms.akadns.net.

;; Query time: 1250 msec
;; SERVER: 192.168.208.228#53(192.168.208.228)
;; WHEN: Sun Mar 19 10:49:27 2006
;; MSG SIZE  rcvd: 89


It probably is a windows bug fix. Those peculiar root records will be
replaced by ". CNAME  local" to keep them from spamming Bill :)

At the moment they try to find out how many CNAMEs in a row are needed
to break their neck.


Cheers
Peter and Karin


-- 
Peter and Karin Dambier
The Public-Root Consortium
Graeffstrasse 14
D-64646 Heppenheim
+49(6252)671-788 (Telekom)
+49(179)108-3978 (O2 Genion)
+49(6252)750-308 (VoIP: sipgate.de)
mail: peter at peter-dambier.de
mail: peter at echnaton.serveftp.com
http://iason.site.voila.fr/
https://sourceforge.net/projects/iason/