difficulty with forward only

Michael michael at insulin-pumpers.org
Tue Feb 22 00:07:40 UTC 2005


bind 9.3.0, 9.3.1 beta2
linux 2.4.7, built on target platform from isc.org download

I have a forward only zone set up to a local blacklist server

zone "pseudo.dnsbl" in {
        type forward;
        forward only;
        forwarders {
                127.0.0.1 port 9953;
        };
};


Accessing this works fine for a day or two then always dies. The system 
log contains this typical message which can be reproduced consistently 
once the failure occurs by simple doing the appropriate "dig" 

i.e. dig -t any 155.250.185.80.pseudo.dnsbl

Feb 21 11:11:47 ns2 named[27743]: unexpected end of input resolving
    '172.66.46.80.pseudo.dnsbl/A/IN': 127.0.0.1#9953
Feb 21 11:11:47 ns2 last message repeated 3 times
Feb 21 11:12:15 ns2 named[27743]: unexpected end of input resolving
    '155.250.185.80.pseudo.dnsbl/ANY/IN': 127.0.0.1#9953

accessing the nameserver running at port 9953 with dig or other tools 
continues to work just fine, only the forwarding operation appears to 
be defunct. Restarting the name daemon ends the problem --- for a 
while, then it recurrs.

Any idea what's going on here?? I'd certainly like to fix it.

Michael



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