[dns-operations] does anybody know why yahoo+akamai are doing this?
paul at vix.com
Sun Mar 19 07:57:05 UTC 2006
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: 18.104.22.168#53(22.214.171.124)
;; WHEN: Sun Mar 19 07:53:28 2006
;; MSG SIZE rcvd: 273
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