Loop detection

Lack Mr G M gml4410 at ggr.co.uk
Wed Jan 19 17:05:50 UTC 2000


   Is it possible to configure bind8 (8.2.2-P5) so that it is able to
detect a loop if it "sends" a query on to a server configured in a zone
{type forward;}; clause if that "target" server is configured to send
back to the original server as a forwarder and reckons that it doesn't
know the answer? 

Eg:

------------------------------------------------------------------
Main server (172.18.1.1) has:
  zone "82.168.192.in-addr.arpa" {
   type forward;
   forwarders { 192.168.82.55 ; };
};

------------------------------------------------------------------
Sub-server (192.168.82.55) has:

   No info on 82.168.192.in-addr.arpa (eg: accidental file deletion
                                           other cock-up)

   forwarders {
      172.18.1.1;
   };

------------------------------------------------------------------


   I seem to recall I have seen messages about loop detection in the
syslog file but that may just work for sub-zones(??).  If there is no
loop possible then the situation above leads to a rather fast "tennis
match". 



-- 
--------- Gordon Lack --------------- gml4410 at ggr.co.uk  ------------
This message *may* reflect my personal opinion.  It is *not* intended
to reflect those of my employer, or anyone else.



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