I'm getting unusual errors from my dns server and firewall relating to
an invalid private ip.  The errors are as follows:

Bind 8 reports:
Nov 20 09:59:24 mercury named[338]: ns_resp: sendto([10.168.0.11].53):
Operation not permitted

Netfilter logging reports several instances of this:
Nov 20 09:59:24 mercury kernel: OUTPUT: IN= OUT=eth1 SRC=64.65.177.82
DST=10.168.0.11 LEN=79 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP
SPT=1024 DPT=53 LEN=59 
Nov 20 09:59:24 mercury kernel: OUTPUT: IN= OUT=eth1 SRC=64.65.177.82
DST=10.168.0.10 LEN=79 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP
SPT=1024 DPT=53 LEN=59 

My firewall rules don't allow external connections to the 10.x address
space.  What I suspect is occuring is that some dns server out there has
an NS record pointing to 10.168.0.11 and .10.  One of my clients tries to
connect to a domain, which goes through the chain to the above NS 
record.  Bind 8 tries to look it up, but my firewall rules don't allow
it.  

I'm soliciting ideas on how to trace this out.  I suppose increasing the
logging of bind is the way to go, but which category?  Other ideas?

Thanks,
Cory

--
Cory Petkovsek                                       Adapting Information
Adaptable IT Consulting                                Technology to your   
(541) 914-8417                                                   business
[EMAIL PROTECTED]                                  www.AdaptableIT.com
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