Hi all!
I have trouble with reverse lookup of IP addresses. Reverse lookups work when I
directly request my Bind9, but not pdns-recursor forwarding the request to the
same Bind9. I do this because I want to use the lua-script facility to filter
incoming requests, allowing only the lookup of named zones and domains.
I run pdns-recursor (4.0.4, Debian) on the same machine as my Bind9. Bind9
listens to port 53, pdns-recurser to 5300 (should be interchanged in the
future). The Bind is able to resolve either local zones or looks up any
IP-address on the web.
Here is my config file for pdns-recursor:
root@host:/etc/powerdns# grep -v '#' recursor.conf |grep -v '^$'
config-dir=/etc/powerdns
forward-zones-recurse=.=127.0.0.1:53
hint-file=/usr/share/dns/root.hints
local-address=0.0.0.0
local-port=5300
quiet=yes
security-poll-suffix=
setgid=pdns
setuid=pdns
With this setup, I can forward lookup all IP addresses - my local zones as well
as Internet addresses, both by directly asking Bind9 as well as pdns-recursor.
However, the reverse lookup does only work when I directly talk to Bind, but
not when asking pdns-recursor.
This is the answer from Bind (port 53) (192.168.94.66 is the Bind/pdns-recursor
test server)
[root@hallo ~]# nslookup - 192.168.94.66
> set port=53
> 192.168.94.66
Server: 192.168.94.66
Address: 192.168.94.66#53
66.94.168.192.in-addr.arpa name = sixtysix.corp.mydomain.de.
And this from pdns-recursor (port 5300)
[root@hallo ~]# nslookup - 192.168.94.66
> set port=5300
> 192.168.94.66
Server: 192.168.94.66
Address: 192.168.94.66#5300
** server can't find 66.94.168.192.in-addr.arpa.: NXDOMAIN
I don’t understand what might be wrong with the lookup of IP addresses through
pdns-recursor, as I (think I) forward all requests to my Bind with the
forward-zones-recurse=.
Can somebody please help me and tell me what’s wrong?
Thank you very much!
Sig
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