suspicious messages in logfile

[Jim Reid]

>>>>> "Andreas" == Andreas S Kerber <ask at ag-trek.de> writes:

    Andreas> The following just appeared in our logs (BTW we are
    Andreas> running bind 8.2.2-p5): 
    Andreas> Apr 17 14:00:24 osiris named[5095]: Malformed response from [193.67.131.1].53 (out of data in final pass)

    Andreas> What causes these "out of data in final pass" messages?

Mangled packets. There are usually two explanations for this. Broken
name server implementations that can't format DNS replies correctly is
one possibility. The other is packet corruption: perhaps by a faulty
router or network interface.