The RATEEST target collects statistics, performs rate estimation calculation and saves the results for later evaluation using the rateest match.

--rateest-name name
    Count matched packets into the pool referred to by name, which is freely choosable.

--rateest-interval amount{s|ms|us}
    Rate measurement interval, in seconds, milliseconds or microseconds.

--rateest-ewmalog value
    Rate measurement averaging time constant.