Maintained by: NLnet Labs

[Unbound-users] unbound failed lookups?

pcl-associates
Sat Jul 26 02:14:07 CEST 2014


Hi,

Unbound seems to be handling failed lookups in a strange manner.  Certain lookups provide my external IP as the answer.  I'm interpreting that as a failed lookup.  If that's the case, then how can I get unbound to provide an actual "failed lookup" response rather than my own external IP address?  

I've looked all over the unbound.conf site and found nothing with respect to this particular problem.  The logs don't give me 

Machine w Unbound# nslookup 96.94.160.167.sbl-xbl.spamhaus.org
Server:		127.0.0.2
Address:	127.0.0.2#53

Non-authoritative answer:
Name:	96.94.160.167.sbl-xbl.spamhaus.org.aquawest.net
Address: 1xx.1xx.1xx.1xx  [my external IP address]



In addition, the following yields an answer that's just wrong.  I've tested this on an machine that doesn't use unbound.  You can see how the two answers differ.

Machine w Unbound# nslookup 198.31.211.67.list.dnswl.org
Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
Name:	198.31.211.67.list.dnswl.org
Address: 92.242.144.50


compare the result above with the result below:


Machine 2# nslookup 198.31.211.67.list.dnswl.org 192.168.7.1
Server:		192.168.1.1
Address:	192.168.1.1#53

** server can't find 198.31.211.67.list.dnswl.org: NXDOMAIN


Does anyone have any insight as to why this might be happening?

Thank you!

Patrick
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