[Pdns-users] Issue with recursive lookups in pdns 3

[Grant Keller]

Hello all,

We just started upgrading our nameservers to pdns 3.0, and we have 
noticed a problem with the new version not following delegation 
properly. One instance we have seen:

The awnser on box running pdns 3.0:
# dig office1.ct.vpn.cleartunnel.net @c.ns.sr

; <<>> DiG 9.3.4 <<>> office1.ct.vpn.cleartunnel.net @c.ns.sr
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25178
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;office1.ct.vpn.cleartunnel.net.	IN	A

;; AUTHORITY SECTION:
vpn.cleartunnel.net.	3600	IN	NS	ns1.vpn.cleartunnel.net.

;; ADDITIONAL SECTION:
ns1.vpn.cleartunnel.net. 3600	IN	A	69.12.220.27

;; Query time: 7 msec
;; SERVER: 64.142.56.28#53(64.142.56.28)
;; WHEN: Mon Oct  3 16:54:18 2011
;; MSG SIZE  rcvd: 82

and the awnser on pdns 2.9.22:

# dig office1.ct.vpn.cleartunnel.net @b.ns.sr

; <<>> DiG 9.3.4 <<>> office1.ct.vpn.cleartunnel.net @b.ns.sr
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16189
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;office1.ct.vpn.cleartunnel.net.	IN	A

;; ANSWER SECTION:
office1.ct.vpn.cleartunnel.net.	1441 IN	A	69.12.220.2

;; Query time: 5 msec
;; SERVER: 69.12.221.213#53(69.12.221.213)
;; WHEN: Mon Oct  3 16:55:01 2011
;; MSG SIZE  rcvd: 64


Is this a bug?