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Evan Hunt authored
when built with "configure --enable-singletrace", named will produce detailed query logging at the highest debug level for any query with query ID zero. this enables monitoring of the progress of a single query by specifying the QID using "dig +qid=0". the "client" logging category should be set to a low severity level to suppress logging of other queries. (the chance of another query using QID=0 at the same time is only 1 in 2^16.) "--enable-singletrace" turns on "--enable-querytrace" as well, so if the logging severity is not lowered, all other queries will be logged verbosely as well. compiling with either of these options will impair query performance; they should only be turned on when testing or troubleshooting.
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