help dynreset

dynreset
dynreset (anything)
dynreset incremental

If no arguments are specified, all zones will be checked to see whether they are in need of reset, and whether it is safe to do so. If any text is supplied, the system will attempt to reset each zone needing it.

If the argument is "incremental", each zone will be marked with a random reset time between 10 and 15 minutes, and will not be considered for resetting until that time limit has expired. This is used by the reset daemon to limit the number of zones checked during any one sweep, and reduce the amount of time it takes to run the dynreset process.

Following a dynreset, the details of which zones were reset and why will be stored in info dynreset

see also:
reset, resetwild, info dynreset