In mitigating the issue we bypassed our pfSense boxes and instead let our Cisco ASA handle DHCP. However, this limits the IP pool to 256 IPs, which means we were required to reduce our capacity.
We have now rebuilt the pfSense boxes and are bringing them back online. This will allow us to restore our service to the full capacity.
While we are taking precautions to mitigate any issues during the switch, we may experience some small service disruptions on MacOS builds.