[Pdns-users] powerdns.com via Google DNS

[Christof Meerwald]

Hi,

just noticed something strange when trying to resolve powerdns.com via
Google DNS, e.g.

$ dig +dnssec -t ns powerdns.com @8.8.8.8

; <<>> DiG 9.8.1-P1 <<>> +dnssec -t ns powerdns.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13535
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;powerdns.com.			IN	NS

;; ANSWER SECTION:
powerdns.com.		0	IN	NS	dns-us1.powerdns.net.
powerdns.com.		0	IN	NS	dns-us2.powerdns.net.
powerdns.com.		0	IN	NS	dns-eu1.powerdns.net.
powerdns.com.		0	IN	NS	dns-eu2.powerdns.net.
powerdns.com.		0	IN	RRSIG	NS 8 2 86400 20130516000000 20130502000000 43290 powerdns.com. sWB/GBckAOgTL41oftGRn1Mf0dILNWWXZF9U51rGeodJjfBH/FJEKYfN ui3K+4QMD6aHmKraOtdLAW0pArbHMYOgC62BeL0UwKVl+drhgDRHKg96 z0LsI4i0XJhg5ieXiMPk9QnWD18zJrp0u+gjCvfkAzWucKqhV2mZadtp nyY=

;; Query time: 15 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue May  7 10:30:31 2013
;; MSG SIZE  rcvd: 313

Note that there is no "ad" flag and the TTL is set to 0 - but
powerdnssec.org on the other hand appears to be fine:

$ dig +dnssec -t ns powerdns.com @8.8.8.8

; <<>> DiG 9.8.1-P1 <<>> +dnssec -t ns powerdnssec.org @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56683
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;powerdnssec.org.		IN	NS

;; ANSWER SECTION:
powerdnssec.org.	3413	IN	NS	powerdnssec2.ds9a.nl.
powerdnssec.org.	3413	IN	RRSIG	NS 5 2 3600 20130516000000 20130502000000 5985 powerdnssec.org. ZVmtG2YKCncdjfXvxiEN4d5ZPeH47ueMPJT+Ldio9CMdanRIPuRivZ86 KtdPn/SGW2GKQAWvuQImEMH6yQ5nwMjxJdRLnJAFvWF7wab/HEbaPrOI eTpVJvu701EMguXkmh1l5JfRQEk1Lcw8X2sXjsP0Rk/6wrpBY9SN/ycV NQc=
powerdnssec.org.	3413	IN	NS	powerdnssec1.ds9a.nl.

;; Query time: 4 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue May  7 10:30:39 2013
;; MSG SIZE  rcvd: 280


Does anyone have any insights into this behaviour?


Christof

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