Ability to use * sign in filtering firewall logs

If you go to firewall logs and press “more” button, you’ll be taked to “advanced” mode filrewall logs, where you can use various filters to searchfor entries you need. But you currently can’t, for example something like Souce IP 10...* (filter any source IPs starting with 10). So currently it’s next to impossible to find something with tons of blocked connections from a local network appearing every few seconds.