icmpfilter

#! /usr/bin/perl

$size = $ARGV[0];

while(<STDIN>) {
        if(/round-trip min\/avg\/max = [0-9.]+\/([0-9.]+)\/[0-9.]+ ms/) {
                $rtt = $1;

                printf "%d %f\n", $size, ($size / 1024) / ($rtt / 1000);
        }
}