[Pdns-users] Important bug fix, PowerDNS 3.1.1 released...

Gerhard Gau├čling ggrubbish at web.de
Fri May 26 10:56:33 UTC 2006


Am Mittwoch, 24. Mai 2006 00:29 schrieb bert hubert:
> With many thanks to Alessandro Bono for his excellent debugging.. The
> increased security of PowerDNS 3.1 came at a hidden cost, if an A and
> an AAAA query would be outstanding for the exact same domain, to the
> exact same server, these queries would be merged, with sometimes very
> bad results.
>
> This mostly happens for Konqueror users on hosts that have IPv6
> lookups enabled, but it might impact all users given enough time.
>
> This did not show up in our big testing due to the relative scarcity
> of AAAA lookups, and because most of the big test setups have quite
> some latency with their users, which lessens the chance of having two
> simultanous queries in flight.
>
> Download it here:
>   http://downloads.powerdns.com/releases/pdns-recursor-3.1.1.tar.bz2
>
> Debian:
>  
> http://downloads.powerdns.com/releases/deb/pdns-recursor_3.1.1-1_amd6
>4.deb

Hello,

I upgraded to the latest recursor, and can no more resolve smtp.web.de, 
therefor, I can not send emails, and I hope I'll find a way to get this 
one on the list ;-):

gerhard at ubuntu:~/download/pdns$ dig smtp.web.de @nsx1.web.de

; <<>> DiG 9.3.2 <<>> smtp.web.de @nsx1.web.de
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35676
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;smtp.web.de.                   IN      A

;; ANSWER SECTION:
smtp.web.de.            40000   IN      A       217.72.192.157

;; Query time: 44 msec
;; SERVER: 217.72.199.153#53(217.72.199.153)
;; WHEN: Fri May 26 12:39:10 2006
;; MSG SIZE  rcvd: 45

gerhard at ubuntu:~/download/pdns$ dig smtp.web.de @localhost

; <<>> DiG 9.3.2 <<>> smtp.web.de @localhost
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17411
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;smtp.web.de.                   IN      A

;; AUTHORITY SECTION:
web.de.                 3040    IN      SOA     nsx1.web.de. 
hostmaster.webde.de. 2005083236 28800 7200 604800 3600

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 26 12:39:40 2006
;; MSG SIZE  rcvd: 87

but:
gerhard at ubuntu:~/download/pdns$ dig +short www.web.de @localhost
217.72.195.42


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