pfSense

I think it would be great to add a feature to update automatically the ip address lists for a dns record involved in an alias. For example, if i create a rule for example.com, i go to dns lookup, and i create a rule for the IPs for that dns will lookup at that moment, but the rule won't update if the ip addresses change over time. It would be useful if like pfblockerng, the dns lookup would be triggered periodically, to keep the rule updated for a that domain, instead of having to keep looking up and updating the alias manually.
Thank you!